A treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis

Abstract

The present invention relates to the technical field of silkworm excrement hydrolysis, and specifically discloses a treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis. A treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis includes a hydrolysis device, and the steps are as follows: feeding the silkworm excrement waste into the upper cavity of the hydrolysis device, and crushing and cutting the silkworm excrement through a crushing component and a wire cutting component; during the crushing process, a heating device is also used to dry it; feeding the crushed silkworm excrement particles into the lower cavity of the hydrolysis device, and setting hydrolysis reaction parameters; the silkworm excrement particles carry out acid-base ion co-catalyzed hydrolysis in the hydrolysis device. The treatment method for converting silkworm excrement waste into feed provided by the present invention breaks the molecular chains of various high-molecular polymers through the input of high-temperature and high-pressure saturated steam for acid-base ion co-catalyzed hydrolysis, and reduces them to small-molecular polymers.

Description

Technical Field

[0001] The present invention relates to the technical field of silkworm excrement hydrolysis, and particularly relates to a treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis. Background Art

[0002] Silkworm excrement is a waste generated during the processing of silkworm cocoons, mainly composed of the following components: protein, fiber, fat, minerals, sugars, moisture, and anti-nutritional factors. These components of silkworm excrement endow it with high nutritional potential. Through appropriate treatment, its digestibility and nutritional value can be improved, and it can be effectively used as animal feed or for other purposes.

[0003] Currently, silkworm excrement contains heavy metals, aflatoxins, or various drug additives. In the existing hydrolysis methods, there is still a risk of residual drugs, and the hydrolysis effect needs to be improved. Moreover, before the hydrolysis of silkworm excrement, it is usually necessary to be crushed. The traditional crushing tool uses a rotary blade for crushing. This crushing method will not only cause silkworm excrement to adhere to the blade, but sometimes when encountering hard objects such as broken metal, plastic, gravel, and insect inner shells, the crushing effect is poor. Over time, the blade will become curled, reducing its service life. Summary of the Invention

[0004] The purpose of the present invention is to provide a treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis to solve the above deficiencies in the prior art.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis, including a hydrolysis device, and the steps are as follows.

[0007] S1: Feed the silkworm excrement waste into the upper cavity of the hydrolysis device, and crush and cut the silkworm excrement through a crushing component and a wire cutting component;

[0008] S2: During the crushing process, a heating device is also used to dry it;

[0009] S3: Feed the crushed silkworm excrement particles into the lower cavity of the hydrolysis device and set the hydrolysis reaction parameters;

[0010] S4: The silkworm excrement particles carry out acid-base ion co-catalyzed hydrolysis in the hydrolysis device;

[0011] S5: After the reaction ends, quickly reduce the temperature and pressure, and cool the reaction product to room temperature;

[0012] S6: Separate the liquid and solid parts after the reaction through filtration, centrifugation, or other separation methods;

[0013] S7: Dry and granulate the solid tail product after hydrolysis treatment to obtain the required feed; the liquid can be directly used as a feed additive or nutrient solution.

[0014] Further, the specific steps of S1 are as follows:

[0015] S11: Place the silkworm excrement on the crushing component, and through the method of vibrating screening, cooperate with the crushing cone to preliminarily crush the silkworm excrement.

[0016] S12: Intermittently drive the wire cutting component to move up and down to cut the silkworm excrement and crush the silkworm excrement with too strong viscosity.

[0017] S12: The crushed silkworm excrement particles fall through the screening component.

[0018] Further, in step S12, after each reciprocating movement of the wire cutting component, it rotates a set angle to change the cutting area and cut the silkworm excrement in all directions.

[0019] Further, in step S12, when the wire cutting component encounters a hard object, it triggers the start of the fault detection component, immediately pauses the movement of the wire cutting component, and removes the hard object.

[0020] Further, in S3, the hydrolysis reaction parameters are: the hydrolysis pressure is 3 - 5 MPa, the temperature is 210 - 260 °C, and the hydrolysis time is 60 - 110 minutes.

[0021] Further, in step S6, an automatic discharging ball valve is provided at the bottom of the hydrolysis device.

[0022] Further, in step S6, the reaction product is filtered through a filter, and the solid part is sent to a granulating and drying machine through an enclosed scraper conveyor for processing, and finally packaged into feed and organic fertilizer.

[0023] In the above technical solution, the beneficial effects of the treatment method for converting silkworm excrement waste into feed by subcritical hydrolysis provided by the present invention are as follows:

[0024] By inputting high-temperature and high-pressure saturated steam for acid-base ion co-catalyzed hydrolysis, the molecular chains of various high-molecular polymers are broken, and reduced to small-molecular polymers; by continuously vibrating the silkworm excrement and cooperating with the crushing cone, part of the silkworm excrement can be shaken loose and become fine particles that fall through the screening mesh, achieving the effect of crushing and screening the silkworm excrement. For some silkworm excrement that is difficult to disperse and crush, by driving the hard wire to reciprocate up and down to cut the silkworm excrement repeatedly. Since some silkworm excrement is not easy to disperse, it requires tough hard wire to help cut. The hard wire has a small force application area and a large pressure, so the cutting effect is better and it is not easy to be damaged.

[0025] It should be understood that the foregoing general description and the following detailed description are merely exemplary and explanatory and are not intended to limit the present disclosure.

[0026] This application document provides an overview of various implementations or examples of the technology described in the present disclosure and is not a complete disclosure of the entire scope or all features of the disclosed technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required to be used in the embodiments. Obviously, the drawings in the following description are only some embodiments described in the present invention, and those of ordinary skill in the art can also obtain other drawings based on these drawings.

[0028] Figure 1 Flowchart of the method provided for an embodiment of the present invention;

[0029] Figure 2 External structure schematic diagram of the hydrolysis device provided for an embodiment of the present invention;

[0030] Figure 3 Top view structure schematic diagram of the wire cutting component provided for Embodiment 1 of the present invention;

[0031] Figure 4 Structure schematic diagram of the screening component provided for Embodiment 1 of the present invention;

[0032] Figure 5 Internal structure schematic diagram of the fixed cylinder provided for Embodiment 1 of the present invention;

[0033] Figure 6 Bottom view structure schematic diagram of the driving component provided for Embodiment 1 of the present invention;

[0034] Figure 7 Cross-sectional view structure schematic diagram of the fixing ring provided for Embodiment 1 of the present invention;

[0035] Figure 8 Bottom view structure schematic diagram of the driving disk provided for Embodiment 1 of the present invention;

[0036] Figure 9 Side view structure schematic diagram of the cleaning plate provided for Embodiment 1 of the present invention;

[0037] Figure 10 Internal structure schematic diagram of the annular sleeve provided for Embodiment 2 of the present invention;

[0038] Figure 11 Provided for Embodiment 2 of the present invention Figure 10 Enlarged structure schematic diagram of part A;

[0039] Figure 12Schematic cross-sectional structure diagram of the fault detection component provided in the second embodiment of the present invention.

[0040] Explanation of reference numerals:

[0041] 1. Hydrolysis tank; 2. Screening component; 21. Fixed cylinder; 22. Screening mesh; 3. Crushing component; 31. Fixed ring; 32. Groove; 33. Vibrator; 34. Crushing cone; 4. Wire cutting component; 41. Rotary cylinder; 42. Pulling plate; 43. Hard wire; 44. Wire threading groove; 5. Lifting component; 51. Reduction motor; 52. Reciprocating lead screw; 53. Threaded sleeve; 54. Support plate; 55. Protective cover; 6. Driving component; 61. Towing piece; 62. Connecting rod; 63. Slip ring; 64. Ring sleeve; 65. Support block; 66. Guide rod; 67. Sleeve rod ring; 68. Elastic member; 7. Switching component; 71. Driven gear ring; 72. Driving disc; 73. First pulley; 74. Driven rod; 75. Second pulley; 76. Transmission belt; 77. Driving wheel; 78. Electromagnet; 79. Transmission hole; 8. Cleaning plate; 9. Fault detection component; 91. Magnetic block; 92. Arc-shaped rod; 93. Telescopic rod; 94. Arc-shaped block; 95. Conical ring; 96. Unlocking block; 97. Force-bearing rod. Detailed implementation manners

[0042] To make the objectives, technical solutions, and advantages of the embodiments of the present disclosure clearer, the technical solutions of the embodiments of the present disclosure will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present disclosure. Obviously, the described embodiments are part of the embodiments of the present disclosure, rather than all of the embodiments. Based on the described embodiments of the present disclosure, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present disclosure.

[0043] Please refer to Figure 1 , a treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis, including a hydrolysis device, and the steps are as follows:

[0044] Send the silkworm excrement waste into the upper cavity of the hydrolysis device, and crush and cut the silkworm excrement through the crushing component 3 and the wire cutting component 4;

[0045] During the crushing process, a heating device is also used to dry it;

[0046] Send the crushed silkworm excrement particles into the lower cavity of the hydrolysis device, and set the hydrolysis reaction parameters;

[0047] The silkworm excrement particles carry out acid-base ion co-catalyzed hydrolysis in the hydrolysis device;

[0048] After the reaction ends, quickly reduce the temperature and pressure, and cool the reaction product to room temperature;

[0049] The liquid and solid parts after the reaction are separated by filtration, centrifugation or other separation methods;

[0050] Specifically, the reaction product is filtered through a filter, and the solid part is sent into a granulating dryer through an enclosed scraper conveyor for processing, and finally packaged into feed and organic fertilizer.

[0051] The solid tail product after hydrolysis treatment is dried and granulated to obtain the required feed; the liquid can be directly used as a feed additive or nutrient solution.

[0052] The hydrolysis reaction parameters are: the hydrolysis pressure is 3-5 MPa, the temperature is 210-260 °C, and the hydrolysis time is 60-110 minutes; when the silkworm excrement waste contains heavy metals and aflatoxin or various drug additives, acid-base ion co-catalyzed hydrolysis is carried out by inputting high-temperature and high-pressure saturated steam to break the molecular chains of various high-molecular polymers and reduce them to small-molecular polymers.

[0053] Crushing process: The silkworm excrement is placed on the crushing component 3, and through the method of vibrating screening, in cooperation with the crushing cone 34, the silkworm excrement is preliminarily crushed; the wire cutting component 4 is intermittently driven to move up and down to cut the silkworm excrement with too strong viscosity; the crushed silkworm excrement particles fall through the screening component 2.

[0054] Please refer to Figures 2 - 8 , the hydrolysis device includes a hydrolysis tank 1, a screening component 2 is arranged at the top of the hydrolysis tank 1, the screening component 2 includes a fixed cylinder 21 arranged at the top of the hydrolysis tank 1, a screening net 22 is arranged inside the fixed cylinder 21, a crushing component 3 is arranged on the screening net 22, and the crushing component 3 is responsible for crushing the silkworm excrement; a wire cutting component 4 is arranged at the top of the fixed cylinder 21, the wire cutting component 4 includes a rotating cylinder 41 arranged at the top of the fixed cylinder 21, a pair of pulling plates 42 are arranged outside the rotating cylinder 41, a plurality of hard silk threads 43 are arranged between the pair of pulling plates 42, and a plurality of wire passing grooves 44 are formed on the rotating cylinder 41. When the plurality of hard silk threads 43 reciprocate up and down through the corresponding wire passing grooves 44, it assists the crushing component 3 to cut and crush the silk that is difficult to separate.

[0055] The crushing component 3 includes a fixed ring 31, a groove 32 is formed on the top surface of the fixed ring 31, a vibrator 33 is fixedly connected inside the groove 32, the top of the vibrator 33 is fixedly connected to the screening net 22, and a plurality of crushing cones 34 are fixedly connected to the top of the screening net 22.

[0056] The top of the vibrator 33 is connected to the screening net 22. When the vibrator 33 is turned on, the screen can be vibrated repeatedly. During the vibration process, the silkworm excrement is also shaken up and collides with the crushing cones 34, improving the crushing degree of the silkworm excrement and making it easier to form particles.

[0057] Specifically, the hard wire 43 is made of iron wire, preferably steel wire rope, with a thickness between 1 and 3 millimeters.

[0058] The hardness of silkworm excrement is relatively soft, similar to that of sediment. When it is continuously vibrated, some of the silkworm excrement can be shaken loose and turned into fine particles that fall through the screening mesh 22, achieving the effect of crushing and screening the silkworm excrement. For some silkworm excrement that is difficult to disperse and break, by driving the hard wire 43 to move up and down reciprocally, the silkworm excrement is repeatedly cut. Since some silkworm excrement is not easy to disperse, the tough hard wire 43 is needed to help with cutting. The hard wire 43 has a small force application area and a large pressure, resulting in a better cutting effect and being not easily damaged.

[0059] Moreover, using the wire cutting method also reduces the amount of silkworm excrement adhesion, and solves the problem that the cutting edge of the cutting knife curls or even is damaged when encountering hard objects, reducing its service life. Due to its own toughness, the steel wire rope can directly touch the wall surface, neither damaging the wall surface nor causing self - damage, and can cut the silkworm excrement close to the inner bottom surface.

[0060] The best arrangement of the crushing cones 34 is in a straight line, similar to the shape of a tic - tac - toe grid.

[0061] In the further embodiment provided by the present invention, a lifting component 5 is arranged on the screening mesh 22. The lifting component 5 includes a reduction motor 51, and the output end of the reduction motor 51 is fixedly connected with a reciprocating lead screw 52. The reciprocating lead screw 52 is arranged on the screening mesh 22 and drives the screening mesh 22 to move up and down.

[0062] A threaded sleeve 53 is fixedly connected inside the fixed ring 31, and the threaded sleeve 53 is in threaded connection with the reciprocating lead screw 52.

[0063] A driving component 6 is arranged on the pulling plate 42. The driving component 6 includes a plurality of traction members 61. A plurality of connecting rods 62 are fixedly connected to the outside of the fixed ring 31. The end of the connecting rod 62 is fixedly connected with a sliding ring 63. An annular sleeve 64 is movably sleeved on the outside of the pulling plate 42, and the annular sleeve 64 is detachably connected to the bottom of the sliding ring 63 through the traction members 61.

[0064] Limit holes are opened on the outside of the sliding ring 63 and the screening mesh 22. A limiting rod is fixedly connected to the inner wall of the fixed cylinder 21, and the limiting rod can extend into the inside of the rotating cylinder 41. The sliding ring 63 and the screening mesh 22 slide up and down reciprocally through the limiting rod.

[0065] Specifically, one end of the traction member 61 movably penetrates into the inside of the fixed cylinder 21 and is fixedly connected to the bottom of the sliding ring 63, and the other end of the traction member 61 is detachably connected to the annular sleeve 64.

[0066] Specifically, a support plate 54 is fixedly connected to the inner wall of the fixed cylinder 21. The reduction motor 51 is arranged on the top surface of the support plate 54. A protective cover 55 is also fixedly connected to the top surface of the support plate 54. The reduction motor 51 is arranged inside the protective cover 55, and the reduction motor 51 is electrically connected to a controller.

[0067] The reduction motor 51 is started through the controller. The reduction motor 51 drives the reciprocating lead screw 52 to rotate, so that the threaded sleeve 53 drives the fixed ring 31 to move. The reduction motor 51 is driven by the controller to rotate forward and reverse intermittently, realizing the up-and-down movement of the fixed ring 31 with the screening mesh 22. At the same time, the traction member 61 is utilized. The traction member 61 adopts a thin string, and the thin string adopts a material with a high tensile rate, such as nylon and polypropylene, etc. When the screening mesh 22 drives the silkworm excrement to rise, the traction member 61 can pull the pulling plate 42 downwards. A pair of pulling plates 42 drive multiple hard silk threads 43 to descend, cutting the silkworm excrement.

[0068] Specifically, a support block 65 is fixedly connected to the outside of the fixed cylinder 21. A guide rod 66 is fixedly connected to the top of the support block 65. A sleeve rod ring 67 is fixedly connected to the outer end of the annular sleeve 64. The guide rod 66 slides inside the sleeve rod ring 67. An elastic member 68 is fixedly connected between the support block 65 and the annular sleeve 64. The elastic member 68 is a strong spring.

[0069] By arranging the strong spring, the annular sleeve 64 can be pushed to move upwards during the downward movement of the screening mesh 22. During actual operation, a damping rod can also be arranged inside the strong spring according to requirements.

[0070] A switching component 7 is arranged on the rotating cylinder 41. The switching component 7 includes a driven gear ring 71 fixedly sleeved on the rotating cylinder 41. A driving wheel 77 is arranged outside the driven gear ring 71. A driving disk 72 is arranged at the bottom of the driving wheel 77. An electromagnet 78 is arranged at the top of the driving disk 72. When the electromagnet 78 reaches the set time, it drives the driven gear ring 71 to rotate, so that the rotating cylinder 41 drives the hard silk threads 43 to rotate, switching the cutting area.

[0071] Specifically, a first pulley 73 is fixedly sleeved outside the reciprocating lead screw 52. A fixed block is fixedly connected to the outside of the fixed cylinder 21. A driven rod 74 is rotatably connected to the top of the fixed block. A second pulley 75 is fixedly sleeved outside the driven rod 74. A transmission belt 76 is connected to the outside of the first pulley 73 and the second pulley 75 in a transmission manner. A driving wheel 77 is rotatably connected to the end of the driven rod 74. The driving wheel 77 is meshed with the driven gear ring 71. The outer end of the driven rod 74 is fixedly sleeved with a driving disc 72. A telescopic rod 93 is arranged on the top of the driving disc 72. An elastic member 68 is arranged inside the telescopic rod 93. An electromagnet 78 is fixedly connected to the end of the telescopic rod 93. A transmission hole 79 is formed in the bottom of the driving wheel 77. An iron sheet is fixedly connected to the inner wall of the transmission hole 79. When the electromagnet 78 is turned on, the electromagnet 78 enters the inside of the transmission hole 79 and drives the driving wheel 77 to rotate. The driving wheel 77 drives the rotating cylinder 41 to rotate through the driven gear ring 71.

[0072] Specifically, the rotating cylinder 41 rotates 90 degrees each time, so that the hard wire 43 just avoids the crushing cones 34 according to the arrangement of the crushing cones 34.

[0073] Please refer to Figure 9 , a plurality of pairs of cleaning plates 8 are further arranged on the rotating cylinder 41. There is a gap between a pair of the cleaning plates 8. When the hard wire 43 passes through, the adhered silkworm excrement particles are cleaned.

[0074] Embodiment 2. The difference between Embodiment 2 and Embodiment 1 is that the following steps and technical features are added: Please refer to Figures 10 - 12 , when the wire cutting component 4 encounters a hard object, it triggers the failure detection component 9 to start, immediately pauses the movement of the wire cutting component 4, and removes the hard object.

[0075] A failure detection component 9 is arranged on the slip ring 63. The failure detection component 9 includes a magnetic block 91 and an iron sheet arranged inside the pulling plate 42. The magnetic block 91 and the iron block are initially attached to each other. A hollow cavity is formed inside the pulling plate 42. An arc-shaped rod 92 is slidably connected to the inner wall of the hollow cavity. An arc-shaped inclined surface is formed at the bottom of the arc-shaped rod 92. A return telescopic rod is further arranged between the arc-shaped rod 92 and the hollow cavity. The iron sheet is fixedly connected to the other side of the hollow cavity. The hard wire 43 is connected to the corresponding iron block. A limiting component is arranged at the end of the traction member 61. A clamping groove is formed in the bottom of the annular sleeve 64. The traction member 61 is clamped in the clamping groove through the limiting component. When the hard wire 43 encounters a hard object, it will pull the magnetic block 91 and squeeze the limiting component, so that it leaves the clamping groove, triggering the pulling plate 42 to stop running.

[0076] The limiting component includes an arc-shaped block 94, a telescopic rod 93 and a stress rod 97. The outer end of the stress rod 97 is embedded with the telescopic rod 93. The end of the telescopic rod 93 is connected to the arc-shaped block 94. A telescopic spring is arranged outside the telescopic rod 93.

[0077] A conical ring 95 is arranged inside the annular sleeve 64, that is, an annular object with an annular inclined surface on the outer side. A unlocking block 96 is fixedly connected to the bottom of the conical ring 95. The unlocking block 96 is slidably connected inside the annular sleeve 64 and abuts against the arc-shaped block 94.

[0078] In the embodiment provided by the present invention, when any magnetic block 91 moves away from the iron sheet, it can push the arc-shaped rod 92, causing the arc-shaped rod 92 to move inward, pushing the conical ring 95 downward, causing the telescopic rod 93 to also move downward, squeezing the arc-shaped block 94, prompting the telescopic rod 93 to contract, separating the stress rod 97 from the card slot. Finally, during the movement of the screening mesh 22, the pulling plate 42 will not be driven to operate.

[0079] In this embodiment, the rotating cylinder 41 rotates 180 degrees each time.

[0080] According to actual requirements, a pair of unlocking blocks 96 can also be arranged at the bottom of the annular sleeve 64. By pulling the unlocking blocks 96, the arc-shaped block 94 can also be contracted to complete the separation of the stress rod 97 from the annular sleeve 64.

[0081] Only some exemplary embodiments of the present invention have been described by way of illustration above. Undoubtedly, for those of ordinary skill in the art, without departing from the spirit and scope of the present invention, the described embodiments can be modified in various different ways. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis, including a hydrolysis device, characterized in that: S1: Feed the silkworm excrement waste into the upper cavity of the hydrolysis device, and crush and cut the silkworm excrement through a crushing component and a wire cutting component; S2: During the crushing process, a heating device is also used to dry it; S3: Feed the crushed silkworm excrement particles into the lower cavity of the hydrolysis device and set the hydrolysis reaction parameters; S4: The silkworm excrement particles undergo co-catalytic hydrolysis by acid-base ions in the hydrolysis device; S5: After the reaction ends, quickly reduce the temperature and pressure, and cool the reaction product to room temperature; S6: Separate the liquid and solid parts of the reaction through filtration, centrifugation or other separation methods; S7: Dry and granulate the solid tail product after hydrolysis treatment to obtain the required feed; the liquid can be directly used as a feed additive or nutrient solution; The hydrolysis device includes a hydrolysis tank. A screening component is arranged at the top of the hydrolysis tank. The screening component includes a fixed cylinder arranged at the top of the hydrolysis tank. A screening net is arranged inside the fixed cylinder. A crushing component is arranged on the screening net, and the crushing component is responsible for crushing the silkworm excrement; A wire cutting component is arranged at the top of the fixed cylinder. The wire cutting component includes a rotating cylinder arranged at the top of the fixed cylinder. A pair of pulling plates are arranged outside the rotating cylinder. A plurality of hard wires are arranged between the pair of pulling plates. A plurality of wire passing grooves are formed on the rotating cylinder; The crushing component includes a fixed ring. A groove is formed on the top surface of the fixed ring. A vibrator is fixedly connected inside the groove. The top of the vibrator is fixedly connected to the screening net. A plurality of crushing cones are fixedly connected to the top of the screening net; A lifting component is arranged on the screening net. The lifting component includes a reduction motor. The output end of the reduction motor is fixedly connected with a reciprocating lead screw. The reciprocating lead screw is arranged on the screening net and drives the screening net to move up and down; A threaded sleeve is fixedly connected inside the fixed ring. The threaded sleeve is threadedly connected with the reciprocating lead screw. A driving component is arranged on the pulling plate. The driving component includes a plurality of traction parts. A plurality of connecting rods are fixedly connected to the outside of the fixed ring. The end of the connecting rod is fixedly connected with a sliding ring. The outside of the pulling plate is movably sleeved with an annular sleeve; A switching component is arranged on the rotating cylinder. The switching component includes a driven gear ring fixedly sleeved on the rotating cylinder. A driving wheel is arranged outside the driven gear ring. A driving disc is arranged at the bottom of the driving wheel.

2. The treatment method for converting feed through subcritical hydrolysis of silkworm excrement waste according to claim 1, characterized in that, The specific steps of S1 also include the following, S11: Place the silkworm excrement on the crushing component, and through the method of vibrating screening, cooperate with the crushing cones to preliminarily crush the silkworm excrement; S12: Intermittently drive the wire cutting component to move up and down to cut the silkworm excrement and crush the silkworm excrement with too strong viscosity; S13: The crushed silkworm excrement particles fall through the screening component.

3. The treatment method for converting silkworm excrement waste into feed through subcritical hydrolysis according to claim 2, wherein In step S12, the wire cutting component rotates a set angle after each reciprocating movement to change the cutting area and cut the silkworm excrement in all directions.

4. The treatment method for converting feed through subcritical hydrolysis of silkworm excrement waste according to claim 3, characterized in that In step S12, when the wire cutting component encounters a hard object, it triggers the start of the fault detection component, immediately pauses the movement of the wire cutting component, and removes the hard object.

5. The treatment method for converting feed through subcritical hydrolysis of silkworm excrement waste according to claim 4, characterized in that, In S3, the hydrolysis reaction parameters are as follows: the hydrolysis pressure is 3 to 5 MPa, the temperature is 210 to 260 °C, and the hydrolysis time is 60 to 110 minutes.

6. The treatment method for converting feed by subcritical hydrolysis of silkworm excrement waste according to claim 5, characterized in that, In the step S6, an automatic discharging ball valve is arranged at the bottom of the hydrolysis device.

7. The treatment method for converting feed through subcritical hydrolysis of silkworm excrement waste according to claim 6, characterized in that, In the step S6, the reaction product is filtered through a filter, and the solid part is sent to a granulating and drying machine through an enclosed scraper conveyor for processing, and finally packaged into feed and organic fertilizer.

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