Solid-state fermentation device for increasing content of crude protein in straw

Abstract

The invention discloses a solid-state fermentation device for increasing the crude protein content of straw, and relates to the technical field of rice straw ferment.The solid-state fermentation device comprises a fermentation box, three limiting frames are slidably connected to the interior of the fermentation box, and two stacking plates are rotatably connected between the two inner walls of each limiting frame; the two outer walls of the fermentation box are slidably connected with three regulation and control rods; in the invention, a hydraulic rod V is started to drive the telescopic grid to integrally contract, so that the plurality of limiting frames are synchronously lifted and kept at equal intervals, after the plurality of limiting frames are synchronously lifted, the three limiting frames and the regulation and control rods are kept at staggered positions, the regulation and control rods are distributed in the middle positions of the two adjacent limiting frames, and under the lifting of the limiting frames, the regulation and control rods can be adjusted to be in a staggered state. According to the device, the stacked straw can be divided into multiple layers, the layers are far away from one another, gaps are reserved, materials can be conveniently put into the straw, heat dissipation of lower-layer rice straw is facilitated, the rice straw can be fermented more sufficiently, the crude protein content of the rice straw can be increased conveniently, and the device is convenient to use.

Description

Technical Field

[0001] This invention relates to the field of straw fermentation technology, specifically a solid-state fermentation device for increasing the crude protein content of straw. Background Technology

[0002] Straw is a significant byproduct of agricultural production. It has a relatively low crude protein content, and to improve its nutritional value as feed, researchers are exploring methods such as microbial fermentation to increase its crude protein content. Otherwise, it is often discarded or burned, leading to resource waste and environmental pollution. Fermentation transforms straw into economically valuable products such as bio-fertilizer, feed, and bioenergy, achieving resource recycling. Crude protein is an essential nutrient for animal growth, development, reproduction, and maintaining life. Increasing the crude protein content of straw can make it a higher-quality feed, better meeting the protein needs of ruminants (such as cattle and sheep) and other livestock, promoting improved animal growth, weight gain, and milk production.

[0003] Currently, some straw is fermented in fermentation boxes. Straw has a higher bulk density than wheat straw, and fermentation boxes usually have good heat preservation and moisture retention properties. However, they also face the problem of high stacking. When the straw stack is high, internal air circulation is restricted, making it difficult for microorganisms at the bottom and inside of the fermentation box to obtain sufficient oxygen, thus affecting aerobic fermentation. At the same time, high stacking of straw generates a lot of heat during fermentation. If heat dissipation is not timely, the internal temperature of the stack will become too high, exceeding the suitable temperature range for microbial growth, inhibiting or killing microorganisms, and causing fermentation to stop. Furthermore, it is inconvenient to add non-protein nitrogen sources such as urea and ammonia into the stack when it is high stacked. Microorganisms can use these nitrogen sources to synthesize their own proteins, thereby increasing the crude protein content in straw feed. However, high stacking means that nitrogen sources can only be added from the top of the stack, which may lead to uneven distribution of nitrogen sources, which is not conducive to increasing the crude protein content of straw. Summary of the Invention

[0004] The purpose of this invention is to provide a solid-state fermentation device for increasing the crude protein content of straw, so as to solve the problems mentioned in the background art.

[0005] To solve the above-mentioned technical problems, the present invention provides a solid-state fermentation device for increasing the crude protein content of straw, comprising: The fermentation box has three limiting frames slidably connected inside, and two material stacking plates are rotatably connected between the two inner walls of the limiting frames. Three control rods are slidably connected on both outer walls of the fermentation box. A supply mechanism and a drive mechanism are provided on the outside of the fermentation box.

[0006] Furthermore, a support frame is provided below the fermentation box, the fermentation box is fixed to the top of the support frame, a protective shell is fixed to the top of the support frame, a hinged door is rotatably connected to the top of the protective shell, and a feeding rack is fixed to the top of the protective shell, the feeding rack penetrates the protective shell and extends to its bottom.

[0007] Furthermore, the supply mechanism includes a mixing box slidably connected to the top of the support frame. The top of the mixing box is fixedly connected to a supply pipeline. Multiple nozzles are fixedly connected at equal intervals on the outer wall of the supply pipeline. The top of the support frame is fixedly connected to two hydraulic rods, and the output end of the hydraulic rods is fixedly connected to the mixing box.

[0008] Furthermore, each of the two outer side walls of the fermentation box is provided with two fixing plates, and three connecting rods are fixedly connected at equal intervals on one side of each fixing plate. The connecting rods are fixedly connected to adjacent control rods. Each of the two outer side walls of the fermentation box is fixedly connected with four limiting rods. The limiting rods pass through the adjacent fixing plates and are slidably connected to them. Each of the two outer side walls of the fermentation box is fixedly connected with four hydraulic rods. The output end of each hydraulic rod is fixedly connected to the adjacent fixing plate.

[0009] Furthermore, both inner walls of the limiting frame are slidably connected to a sliding plate, and one side of the sliding plate is rotatably connected to two steel wire ropes. One end of each steel wire rope is rotatably connected to an adjacent stacking plate.

[0010] Furthermore, the bottom of the fermentation tank is slidably connected to two baffles, and two hydraulic rods are fixedly connected to both outer side walls of the fermentation tank. The output end of the hydraulic rods is fixedly connected to the adjacent baffles.

[0011] Furthermore, the driving mechanism includes two positioning frames, which are fixedly connected to the adjacent outer walls of the fermentation tank. A telescopic grid is fixedly connected to the inner bottom surface of the positioning frame. Three docking plates are slidably connected inside the telescopic grid. The docking plates are rotatably connected to adjacent nodes of the telescopic grid. The three docking plates gradually increase in length from top to bottom. Two connecting blocks are rotatably connected to one side of each of the three docking plates. A steel wire rope is fixedly connected to the outer wall of the connecting block. Two connecting blocks are rotatably connected to the two inner walls of the limiting frame. One end of the steel wire rope is fixedly connected to the adjacent connecting block. A hydraulic rod is fixedly connected to the outer wall of the positioning frame. The output end of the hydraulic rod is fixedly connected to the uppermost docking plate.

[0012] Furthermore, the top of the fermentation tank is fixedly connected to multiple fixed pulley groups, and the steel wire rope is movably engaged inside adjacent fixed pulley groups.

[0013] Furthermore, a connecting frame is provided on the top of the fermentation box, and two control frames are symmetrically fixed to the bottom of the connecting frame. Three control slots are equidistantly opened on the inner wall of the control frame. Protrusions are fixed to both inner walls of the limiting frame, and the protrusions are movably engaged in the interior of adjacent control slots. Two hydraulic rods are fixed to both outer walls of the fermentation box, and the output end of the hydraulic rods is fixed to the bottom of the connecting frame.

[0014] Furthermore, two positioning grooves are provided on both outer side walls of the limiting frame, and rectangular rods are slidably connected inside the positioning grooves. Two locking plates are slidably connected to one side of the sliding plate, and springs are fixed between the locking plates and the sliding plate. The locking plates can be movably engaged with the positioning grooves. Three C-shaped rods are equidistantly slidably connected on both outer side walls of the fermentation box. Both ends of the C-shaped rods can penetrate the fermentation box and extend into its interior. Six hydraulic rods are fixedly connected on both outer side walls of the fermentation box, and the output end of the hydraulic rod is fixedly connected to the adjacent C-shaped rod.

[0015] Compared with the prior art, the beneficial effects of the present invention are: 1. Activate the hydraulic rod five-drive telescopic grid to retract as a whole, so that multiple limit frames are raised synchronously and maintain equal distance from each other. After the multiple limit frames are raised synchronously, the three limit frames and the control rod are staggered, and the control rod is distributed in the middle of two adjacent limit frames. Under the support of the limit frames, the straw pile can be divided into multiple layers, and each layer is separated from each other to make it easier to put materials into the straw. It also makes it easier for the lower layer of straw to dissipate heat, so that the straw fermentation is more complete, which can improve its crude protein content and make it easier to use. 2. Activating the bottom hydraulic rod one drives the C-shaped rod to engage inside the positioning slot and moves the rectangular rod. The rectangular rod then moves the locking plate away from the positioning slot, releasing the limiting position. The sliding plate moves downward under gravity, and the two stacking plates rotate to a vertical position, dumping the lifted material downward. The limiting positions of the multi-layer stacking plates are released sequentially from bottom to top, allowing the multiple layers of straw to fall down and continue stacking. This prevents excessive pressure on the stacking plates from simultaneous falling down and also achieves a certain mixing effect, facilitating the full mixing of nitrogen source and straw. The straw uses the nitrogen source to synthesize its own protein, thereby increasing the crude protein content of the straw. Furthermore, this process is highly automated, saves manpower, and is convenient to use. 3. The protective shell protects and insulates the internal components. An observation window on the front allows management to easily monitor the interior. Opening the flap door allows straw to be added to the fermentation chamber. Activating the hydraulic lever four drives the mixing box, bringing multiple nozzles close to the trough and spraying cellulase from inside the mixing box into the fermentation chamber. This multi-layered and even addition of pre-prepared cellulase improves the feeding effect, further promoting the decomposition of cellulose and hemicellulose in the straw, providing more carbon and energy sources for microorganisms, which is beneficial for their growth and reproduction, protein synthesis, and ultimately increasing the crude protein content of the straw. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the support frame structure in this invention; Figure 3 This is a schematic diagram of the drive mechanism structure in this invention; Figure 4 This is a schematic diagram of the side section structure of the fermentation tank in this invention; Figure 5 This is a side sectional view of the limiting frame structure in this invention; Figure 6 This is a schematic diagram of the side profile of the skateboard in this invention; Figure 7 This is a schematic diagram of the cross-sectional structure of the card plate in this invention; Figure 8 This is a schematic diagram of the C-shaped rod structure in this invention; Figure 9 This is a schematic diagram of the fixed plate structure in this invention.

[0017] In the diagram: 10. Fermentation box; 11. Support frame; 111. Protective shell; 112. Trap door; 113. Feeding rack; 12. Limiting frame; 121. Stacking plate; 122. Slide plate; 1221. Wire rope one; 123. Protrusion; 124. Clamping plate; 1241. Spring; 125. Positioning groove; 1251. Rectangular rod; 126. C-shaped rod; 127. Hydraulic rod one; 128. Connecting block one; 129. Baffle; 1291. Hydraulic rod two; 13. Adjusting rod; 131. Fixing plate ; 132. Connecting rod; 133. Limiting rod; 134. Hydraulic rod three; 14. Supply mechanism; 141. Mixing box; 142. Supply pipeline; 143. Nozzle; 144. Hydraulic rod four; 15. Drive mechanism; 151. Telescopic grid; 152. Positioning frame; 153. Docking plate; 154. Connecting block two; 155. Hydraulic rod five; 156. Steel wire rope two; 157. Fixed pulley block; 158. Control frame; 1581. Control groove; 159. Connecting frame; 1591. Hydraulic rod six. Detailed Implementation

[0018] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0019] Please see Figure 1-9 The present invention provides a technical solution: a solid fermentation device for improving the crude protein content of straw, comprising a fermentation box 10, three limiting frames 12 are slidably connected inside the fermentation box 10, two stacking plates 121 are rotatably connected between the two inner walls of the limiting frames 12, three regulating rods 13 are slidably connected on the two outer walls of the fermentation box 10, and a supply mechanism 14 and a driving mechanism 15 are provided outside the fermentation box 10.

[0020] In practice, opening the flap door 112 allows the addition of straw to the fermentation chamber 10. When it is necessary to cool and oxygenate the straw inside the fermentation chamber 10 or add cellulase, activating hydraulic rod six 1591 drives the connecting frame 159 and the two control frames 158 to move upward. The control frame 158 drives the protrusion 123 and the sliding plate 122 through the bottom end of the control groove 1581 until the locking plate 124 is aligned with the positioning groove 125. Then, the spring 1241 resets and drives the locking plate 124 to engage inside the positioning groove 125, thereby limiting the height of the sliding plate 122. During the process, the sliding plate 122 drives the stacking plate 121 to rotate through the wire rope one 1221. Multiple stacking plates 121 rotate synchronously and lift the straw. The three sets of stacking plates 121 will... The straw is divided into four parts. The hydraulic rod 155 is activated to drive the uppermost docking plate 153 to move down, causing the telescopic grid 151 to retract as a whole. The moving speed of the multiple docking plates 153 from top to bottom gradually decreases and the distance gradually shortens. The three limiting frames 12 are lifted by the steel wire rope 156. The moving distance of the three limiting frames 12 from top to bottom gradually decreases, so that the multiple limiting frames 12 are lifted synchronously and maintain equal spacing between each other. After the multiple limiting frames 12 are lifted synchronously, the three limiting frames 12 and the control rod 13 maintain an interlaced position, and the control rod 13 is distributed in the middle position of two adjacent limiting frames 12. Under the support of the limiting frames 12, the straw pile can be divided into multiple layers, and each layer is separated from each other, creating gaps. Activating hydraulic rod three 134 can drive multiple control rods 13 to separate from fermentation tank 10, thereby freeing up multiple slots for ventilation and cooling and the addition of cellulase. Activating hydraulic rod four 144 can drive mixing tank 141 to bring multiple nozzles 143 close to the slots and spray the cellulase inside mixing tank 141 into fermentation tank 10, so as to add cellulase evenly in multiple layers. When the stacking plate 121 needs to be reset, the lowest hydraulic rod 127 is activated, which drives the C-shaped rod 126 to engage in the positioning groove 125 and moves the rectangular rod 1251. The rectangular rod 1251 moves the locking plate 124 out of the positioning groove 125 to release the limit. The sliding plate 122 moves down under the action of gravity, and the two stacking plates 121 rotate to a vertical position and pour the lifted material down. The limit of the multi-layer stacking plates 121 is released from bottom to top, so that the multi-layer straw and stalks fall down one after another to continue stacking.

[0021] See Figure 2-4 A support frame 11 is provided below the fermentation box 10. The fermentation box 10 is fixed to the top of the support frame 11. A protective shell 111 is fixed to the top of the support frame 11. A hinged door 112 is rotatably connected to the top of the protective shell 111. A feeding rack 113 is fixed to the top of the protective shell 111. The feeding rack 113 passes through the protective shell 111 and extends to its bottom.

[0022] The bottom of the fermentation tank 10 is slidably connected to two baffles 129, and two hydraulic rods 1291 are fixedly connected to both outer walls of the fermentation tank 10. The output end of the hydraulic rods 1291 is fixedly connected to the adjacent baffles 129.

[0023] In practice, the internal components are protected by the protective shell 111. The flap door 112 can be opened to add straw into the fermentation box 10. The support frame 11 is used to fix the fermentation box 10 and raise it to a certain height. The hydraulic rod 1291 can drive the baffle 129 to move, so that the fermented straw can be discharged and guided out by the discharge rack 113. The fermentation box 10, baffle 129 and control rod 13 are all made of heat-insulating board.

[0024] See Figure 2-9 The supply mechanism 14 includes a mixing box 141 slidably connected to the top of the support frame 11. The top of the mixing box 141 is fixedly connected to a supply pipe 142. Multiple nozzles 143 are fixedly connected at equal intervals on the outer wall of the supply pipe 142. Two hydraulic rods 144 are fixedly connected to the top of the support frame 11. The output end of the hydraulic rods 144 is fixedly connected to the mixing box 141. Two fixing plates 131 are provided on both outer side walls of the fermentation box 10. Three connecting rods 132 are fixedly connected at equal intervals on one side of the fixing plate 131. The connecting rods 132 are fixedly connected to the adjacent control rods 13. Four limiting rods 133 are fixedly connected to both outer side walls of the fermentation box 10. The limiting rods 133 pass through the adjacent fixing plates 131 and are slidably connected to them. Four hydraulic rods 134 are fixedly connected to both outer side walls of the fermentation box 10. The output end of the hydraulic rods 134 is fixedly connected to the adjacent fixing plate 131.

[0025] In practice, the fixed plate 131 and multiple control rods 13 are tilted and limited by the limiting rod 133. The hydraulic rod 134 is activated to drive the multiple control rods 13 to separate from the fermentation box 10, thereby freeing up multiple slots for ventilation, cooling and feeding. The hydraulic rod 144 is activated to drive the mixing box 141 to bring multiple nozzles 143 close to the slots and spray the cellulase inside the mixing box 141 into the fermentation box 10, so as to evenly add the cellulase in multiple layers.

[0026] See Figure 2-4 The drive mechanism 15 includes two positioning frames 152, which are fixedly connected to the adjacent outer walls of the fermentation tank 10. A telescopic grid 151 is fixedly connected to the inner bottom surface of the positioning frame 152. Three docking plates 153 are slidably connected inside the telescopic grid 151. The docking plates 153 are rotatably connected to the adjacent nodes of the telescopic grid 151. The three docking plates 153 gradually become longer from top to bottom. Two connecting blocks 154 are rotatably connected to one side of each of the three docking plates 153. A steel wire rope 156 is fixedly connected to the outer wall of the connecting block 154. Two connecting blocks 128 are rotatably connected to the two inner walls of the limiting frame 12. One end of the steel wire rope 156 is fixedly connected to the adjacent connecting block 128. A hydraulic rod 155 is fixedly connected to the outer wall of the positioning frame 152. The output end of the hydraulic rod 155 is fixedly connected to the uppermost docking plate 153. The top of the fermentation tank 10 is fixedly connected to multiple fixed pulley groups 157, and the steel wire rope 156 is movably connected to the inside of the adjacent fixed pulley groups 157.

[0027] In practice, hydraulic rod 155 is activated to drive the uppermost docking plate 153 downward, causing the telescopic grid 151 to retract as a whole. The moving speed and distance of the multiple docking plates 153 from top to bottom gradually decrease. The three limiting frames 12 are lifted by steel wire rope 156, and the moving distance of the three limiting frames 12 from top to bottom gradually decreases, so that the multiple limiting frames 12 are lifted synchronously and maintain equal spacing between each other. After the multiple limiting frames 12 are lifted synchronously, the three limiting frames 12 and the control rod 13 maintain an interlaced position, and the control rod 13 is distributed in the middle position of two adjacent limiting frames 12. Under the support of the limiting frames 12, the stacked straw can be divided into multiple layers, and each layer is separated from each other to make room for material input through the locking point between the control rod 13 and the fermentation box 10.

[0028] See Figure 2-8 The two inner walls of the limiting frame 12 are slidably connected to the slide plate 122. Two steel wire ropes 1221 are rotatably connected to one side of the slide plate 122. One end of the steel wire rope 1221 is rotatably connected to the adjacent stacking plate 121. The fermentation box 10 is provided with a connecting frame 159 at the top. Two control frames 158 are symmetrically fixed to the bottom of the connecting frame 159. Three control slots 1581 are equidistantly opened on the inner wall of the control frame 158. Protrusions 123 are fixed to the two inner walls of the limiting frame 12. The protrusions 123 are movably engaged in the interior of the adjacent control slots 1581. Two hydraulic rods 1591 are fixed to the two outer walls of the fermentation box 10. The output end of the hydraulic rods 1591 is fixed to the bottom of the connecting frame 159. Two positioning slots 125 are provided on both outer side walls of the limiting frame 12. A rectangular rod 1251 is slidably connected inside the positioning slot 125. Two locking plates 124 are slidably connected to one side of the slide plate 122. A spring 1241 is fixed between the locking plate 124 and the slide plate 122. The locking plate 124 can be movably engaged with the positioning slot 125. Three C-shaped rods 126 are equidistantly slidably connected on both outer side walls of the fermentation box 10. Both ends of the C-shaped rods 126 can penetrate the fermentation box 10 and extend into its interior. Six hydraulic rods 127 are fixedly connected on both outer side walls of the fermentation box 10. The output end of the hydraulic rod 127 is fixedly connected to the adjacent C-shaped rod 126.

[0029] In practice, opening the flap door 112 allows the addition of straw to the fermentation chamber 10. When it is necessary to cool and oxygenate the straw inside the fermentation chamber 10 or add cellulase, activating hydraulic rod six 1591 drives the connecting frame 159 and the two control frames 158 to move upward. The control frame 158 drives the protrusion 123 and the sliding plate 122 through the bottom end of the control groove 1581 until the locking plate 124 is aligned with the positioning groove 125. Then, the spring 1241 resets and drives the locking plate 124 to engage inside the positioning groove 125, thereby limiting the height of the sliding plate 122. During the process, the sliding plate 122 drives the stacking plate 121 to rotate through the wire rope one 1221. Multiple stacking plates 121 rotate synchronously and lift the straw. The three sets of stacking plates 121 will... The straw is divided into four parts. The hydraulic rod 155 is activated to drive the uppermost docking plate 153 to move down, causing the telescopic grid 151 to retract as a whole. The moving speed of the multiple docking plates 153 from top to bottom gradually decreases and the distance gradually shortens. The three limiting frames 12 are lifted by the steel wire rope 156. The moving distance of the three limiting frames 12 from top to bottom gradually decreases, so that the multiple limiting frames 12 are lifted synchronously and maintain equal spacing between each other. After the multiple limiting frames 12 are lifted synchronously, the three limiting frames 12 and the control rod 13 maintain an interlaced position, and the control rod 13 is distributed in the middle position of two adjacent limiting frames 12. Under the support of the limiting frames 12, the straw pile can be divided into multiple layers, and each layer is separated from each other, creating gaps. Activating hydraulic rod three 134 can drive multiple control rods 13 to separate from fermentation tank 10, thereby freeing up multiple slots for ventilation and cooling and the addition of cellulase. Activating hydraulic rod four 144 can drive mixing tank 141 to bring multiple nozzles 143 close to the slots and spray the cellulase inside mixing tank 141 into fermentation tank 10, so as to add cellulase evenly in multiple layers. When the stacking plate 121 needs to be reset, the lowest hydraulic rod 127 is activated, which drives the C-shaped rod 126 to engage in the positioning groove 125 and moves the rectangular rod 1251. The rectangular rod 1251 moves the locking plate 124 out of the positioning groove 125 to release the limit. The sliding plate 122 moves down under the action of gravity, and the two stacking plates 121 rotate to a vertical position and pour the lifted material down. The limit of the multi-layer stacking plates 121 is released from bottom to top, so that the multi-layer straw and stalks fall down one after another to continue stacking.

[0030] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural or procedural transformations made based on the content of the present invention's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A solid state fermentation device for increasing the crude protein content of straw, characterized by, The utility model relates to a fermentation box, which comprises three limiting frames (12) slidably connected to the inside of the fermentation box (10), two stockpiling plates (121) rotatably connected between the two inner walls of the limiting frames (12), three regulating rods (13) slidably connected to the two outer walls of the fermentation box (10), a feeding mechanism (14) and a driving mechanism (15) arranged outside the fermentation box (10). A support frame (11) is arranged below the fermentation box (10), the fermentation box (10) is fixedly connected to the top of the support frame (11), a protective shell (111) is fixedly connected to the top of the support frame (11), a hinged flap door (112) is rotatably connected to the top of the protective shell (111), and a discharging frame (113) is fixedly connected to the top of the protective shell (111) and extends through the protective shell (111) to the bottom thereof.

2. The solid state fermentation device for increasing the crude protein content of straw according to claim 1, characterized in that: The feeding mechanism (14) comprises a dispensing box (141) slidably connected to the top of the support frame (11), a feeding pipeline (142) fixedly connected to the top of the dispensing box (141), a plurality of spray heads (143) equidistantly fixedly connected to the outer wall of the feeding pipeline (142), two hydraulic rods four (144) fixedly connected to the top of the support frame (11), and the output ends of the hydraulic rods four (144) are fixedly connected to the dispensing box (141).

3. The solid state fermentation device for increasing the crude protein content of straw according to claim 2, characterized in that: Each of the two outer side walls of the fermentation box (10) is provided with two fixed plates (131), each of the fixed plates (131) is equidistantly fixedly connected with three connecting rods (132), the connecting rods (132) are fixedly connected with adjacent regulating rods (13), each of the two outer side walls of the fermentation box (10) is fixedly connected with four limiting rods (133), the limiting rods (133) extend through and are slidably connected with adjacent fixed plates (131), and each of the two outer side walls of the fermentation box (10) is fixedly connected with four hydraulic rods three (134), the output ends of the hydraulic rods three (134) are fixedly connected with adjacent fixed plates (131).

4. The solid state fermentation device for increasing the crude protein content of straw according to claim 1, characterized in that: Each of the two inner walls of the limiting frame (12) is slidably connected with a sliding plate (122), each of the sliding plates (122) is rotatably connected with two steel wires one (1221), and one end of each of the steel wires one (1221) is rotatably connected with an adjacent stockpiling plate (121).

5. The solid state fermentation device for increasing the crude protein content of straw according to claim 1, characterized in that: The bottom of the fermentation box (10) is slidably connected with two baffles (129), and each of the two outer side walls of the fermentation box (10) is fixedly connected with two hydraulic rods two (1291), and the output ends of the hydraulic rods two (1291) are fixedly connected with adjacent baffles (129).

6. The solid state fermentation device for increasing the crude protein content of straw according to claim 1, characterized in that: ​ 7. The solid state fermentation device for increasing the crude protein content of straw according to claim 1, characterized in that: The driving mechanism (15) includes two positioning frames (152) which are fixedly connected with adjacent outer walls of the fermentation box (10), the inner bottom surface of the positioning frame (152) is fixedly connected with a telescopic grid (151), the inside of the telescopic grid (151) is slidingly connected with three butt plates (153), the butt plates (153) are rotatably connected with adjacent nodes of the telescopic grid (151), the three butt plates (153) gradually increase in length from top to bottom, one side of the three butt plates (153) is rotatably connected with two connecting blocks two (154), the outer wall of the connecting block two (154) is fixedly connected with a steel wire rope two (156), both inner walls of the limiting frame (12) are rotatably connected with two connecting blocks one (128), one end of the steel wire rope two (156) is fixedly connected with an adjacent connecting block one (128), the outer wall of the positioning frame (152) is fixedly connected with a hydraulic rod five (155), and the output end of the hydraulic rod five (155) is fixedly connected with the uppermost butt plate (153).

8. The solid state fermentation device for increasing the crude protein content of straw according to claim 7, characterized in that: A plurality of pulley blocks (157) are fixedly connected to the top of the fermentation box (10), and the steel wire rope two (156) is movably connected in the adjacent pulley block (157).

9. The solid state fermentation device for increasing the crude protein content of straw according to claim 8, characterized in that: The top of the fermentation box (10) is provided with a connecting frame (159), the bottom of the connecting frame (159) is fixedly connected with two control frames (158) in a symmetrical manner, three control grooves (1581) are equidistantly formed in the inner wall of the control frame (158), the two inner walls of the limiting frame (12) are fixedly connected with protrusions (123), the protrusions (123) are movably connected in the adjacent control grooves (1581), and two hydraulic rods six (1591) are fixedly connected to the two outer side walls of the fermentation box (10), and the output end of the hydraulic rod six (1591) is fixedly connected with the bottom of the connecting frame (159).

10. The solid state fermentation device for increasing the crude protein content of straw according to claim 9, characterized in that: Two positioning grooves (125) are formed in the two outer side walls of the limiting frame (12), a rectangular rod (1251) is slidingly connected in the positioning groove (125), two clamping plates (124) are slidingly connected on one side of the sliding plate (122), springs (1241) are fixedly connected between the clamping plate (124) and the sliding plate (122), the clamping plate (124) can be movably connected with the positioning groove (125), three L-shaped rods (126) are equidistantly and slidingly connected to the two outer side walls of the fermentation box (10), both ends of the L-shaped rod (126) can penetrate through the fermentation box (10) and extend into the inside of the fermentation box (10), and six hydraulic rods one (127) are fixedly connected to the two outer side walls of the fermentation box (10), and the output end of the hydraulic rod one (127) is fixedly connected with an adjacent L-shaped rod (126).

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