Silkworm excrement fertilizer production device
By designing a rotating storage cylinder and heat conduction holes, combined with magnetic fixation and modular casing, the problems of low efficiency, clumping, and maintenance of silkworm excrement fertilizer processing equipment are solved, achieving efficient drying and convenient maintenance, and improving the efficiency of silkworm excrement resource utilization.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- SICHUAN JIANHONG SILK ROAD MODERN AGRICULTURAL DEVELOPMENT CO LTD
- Filing Date
- 2025-05-16
- Publication Date
- 2026-04-28
AI Technical Summary
Existing silkworm excrement fertilizer processing equipment suffers from problems such as low efficiency, material clumping, heat waste, inconvenient loading and unloading, and difficult maintenance. In particular, the unreasonable design of the mixing mechanism leads to a high material breakage rate, which affects the quality of the finished product.
The rotating storage cylinder, combined with evenly distributed heat-conducting holes and magnetic fixation, enables dynamic turning and hot air penetration of silkworm excrement. The modular casing design and sliding groove limiting mechanism ensure efficient operation and convenient maintenance of the equipment.
It significantly shortens the drying cycle, prevents material agglomeration, reduces maintenance complexity, improves equipment stability and finished product quality, and reduces maintenance costs.
Smart Images

Figure CN224172684U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of fertilizer processing technology, and more specifically, to a device for producing silkworm excrement fertilizer. Background Technology
[0002] Silkworm excrement, a byproduct of sericulture, is rich in organic matter and trace elements, making it a high-quality raw material for organic fertilizer. Traditional silkworm excrement fertilizer processing often involves natural sun-drying or simple drying equipment for dehydration, which suffers from low efficiency, susceptibility to weather conditions, and difficulty in ensuring hygiene. While the introduction of mechanical drying equipment has partially solved these problems, most existing drying devices have structural design flaws: drum dryers tend to accumulate and clump materials inside, leading to uneven heating; box-type dryers waste heat due to insufficient airtightness, and generally suffer from inconvenient loading and unloading, as well as difficulties in cleaning the equipment. Especially for materials like silkworm excrement that need to be kept loose to improve drying efficiency, traditional equipment often suffers from increased material breakage rates due to unreasonable agitation mechanism design, affecting the quality of the finished product.
[0003] Furthermore, existing equipment suffers from poor maintainability. The drying chamber and transmission components are mostly fixedly connected, requiring complete disassembly for filter replacement or residue cleaning, significantly increasing maintenance costs. Designing a silkworm excrement fertilizer processing device that combines efficient drying, convenient maintenance, structural stability, and adaptability to different batch production needs has become a key technical challenge for improving the efficiency of silkworm excrement resource utilization.
[0004] Therefore, a silkworm excrement fertilizer production device is proposed to address the above problems. Utility Model Content
[0005] 1. Technical problems to be solved
[0006] To address the problems existing in the prior art, the purpose of this utility model is to provide a silkworm excrement fertilizer production device. It can achieve the dual effects of dynamic turning and hot air penetration of silkworm excrement through a rotating storage cylinder and evenly distributed heat conduction holes, effectively preventing material agglomeration and accelerating moisture evaporation, and significantly shortening the drying cycle.
[0007] 2. Technical Solution
[0008] To solve the above problems, the present invention adopts the following technical solution.
[0009] A silkworm excrement fertilizer production device includes an outer casing. A motor is installed on the left side of the outer casing, and a first connecting column is fixedly connected to the output end of the motor. A first sleeve is fixedly connected to the right side of the outer wall of the first connecting column. Multiple first sleeves are fixedly connected at equal intervals to the right side of the outer wall of the first sleeve. A second sleeve is installed on the right side of the first sleeve. Multiple first connecting rods are fixedly connected at equal intervals to the left side of the outer wall of the second sleeve. The first connecting rods and first sleeves engage. Second sleeves are fixedly connected to the inner walls of both the first and second sleeves. A storage cylinder is installed inside the first and second sleeves. Second connecting columns are fixedly connected to the left and right sides of the outer wall of the storage cylinder. The second connecting columns and second sleeves engage. A dryer is installed at the bottom of the storage cylinder. A connecting plate is fixedly connected to the bottom wall of the dryer. The bottom wall of the connecting plate is fixedly connected to the inner bottom wall of the outer casing. An adsorption mechanism is installed inside the first sleeve.
[0010] Furthermore, the adsorption mechanism includes a plurality of first magnetic blocks, which are respectively fixedly connected to the outer wall of the first connecting rod, and a second magnetic block is fixedly connected to the inner wall of the first sleeve.
[0011] Furthermore, a second connecting rod is fixedly connected to the middle of the bottom wall of the motor, and the end of the second connecting rod is fixedly connected to the front side of the outer wall of the equipment housing.
[0012] Furthermore, the outer wall of the device housing is provided with viewing windows at both the front and rear ends.
[0013] Furthermore, a control switch is installed on the left side of the front wall of the outer wall of the equipment housing, and the control switch is electrically connected to the motor and the dryer respectively.
[0014] Furthermore, a sliding groove is provided on the right end of the inner wall of the device housing, and a sealing plate is slidably connected inside the sliding groove.
[0015] Furthermore, a limiting plate is fixedly connected to the front end of the outer wall of the sealing plate, and a limiting groove is opened at the rear end of the right side of the outer wall of the equipment housing, and the limiting plate and the limiting groove are engaged.
[0016] 3. Beneficial Effects
[0017] Compared with existing technologies, the advantages of this utility model are:
[0018] (1) This scheme achieves the dual effect of dynamic turning and hot air penetration of silkworm excrement by rotating the storage cylinder and using uniformly distributed heat conduction holes, effectively preventing material agglomeration and accelerating moisture evaporation, thus significantly shortening the drying cycle.
[0019] (2) This solution uses a modular housing design and magnetic fixing method to make the loading and unloading process of the storage cylinder free of special tools, which greatly reduces the complexity of equipment cleaning and component replacement.
[0020] (3) The precision-fitted sliding groove and limiting mechanism ensure smooth opening and closing of the sealing plate. The combination of multiple mechanical fixing and thermal protection design ensures long-term reliable operation of the equipment under high temperature conditions. Attached Figure Description
[0021] Figure 1 This is a three-dimensional structural diagram of the present invention;
[0022] Figure 2 This is a partial structural schematic diagram of the present invention;
[0023] Figure 3 This is a partial disassembled structural diagram of the present invention;
[0024] Figure 4 This is a schematic diagram of the rear view structure of this utility model.
[0025] Explanation of the labels in the diagram:
[0026] 1. Equipment casing; 2. Adsorption mechanism; 201. First magnetic block; 202. Second magnetic block; 3. Motor; 4. First connecting column; 5. First sleeve; 6. First sleeve; 7. First connecting rod; 8. Second sleeve; 9. Dryer; 10. Second sleeve; 11. Second connecting column; 12. Connecting plate; 13. Storage cylinder; 14. Viewing window; 15. Control switch; 16. Second connecting rod; 17. Sliding groove; 18. Limiting plate; 19. Sealing plate; 20. Limiting groove. Detailed Implementation
[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the protection scope of the present utility model.
[0028] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0029] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," "sleeved / connected," "connected," etc., should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0030] Example:
[0031] Please see Figure 2 , Figure 3 and Figure 4 A silkworm excrement fertilizer production device includes an outer casing 1. A motor 3 is installed on the left side of the outer casing 1. A first connecting post 4 is fixedly connected to the output end of the motor 3. A first sleeve 5 is fixedly connected to the right side of the outer wall of the first connecting post 4. Multiple first sleeves 6 are fixedly connected at equal intervals to the right side of the outer wall of the first sleeve 5. A second sleeve 8 is installed on the right side of the first sleeve 5. Multiple first connecting rods 7 are fixedly connected at equal intervals to the left side of the outer wall of the second sleeve 8. The first connecting rods 7 and the first sleeves 6 engage. Second sleeves 10 are fixedly connected to the inner walls of both the first sleeve 5 and the second sleeve 8. The first shell 5 and the second shell 8 are equipped with a storage cylinder 13 inside. The left and right ends of the outer wall of the storage cylinder 13 are fixedly connected to the second connecting column 11. The second connecting column 11 and the second sleeve 10 are engaged. The bottom of the storage cylinder 13 is equipped with a dryer 9. The bottom wall of the dryer 9 is fixedly connected to the connecting plate 12. The bottom wall of the connecting plate 12 is fixedly connected to the inner bottom wall of the equipment shell 1. The first sleeve 6 is equipped with an adsorption mechanism 2 inside. The bottom wall of the motor 3 is fixedly connected to the middle of the bottom wall. The end of the second connecting rod 16 is fixedly connected to the front side of the outer wall of the equipment shell 1.
[0032] In this design, the storage cylinder 13 is secured within the second sleeve 10, which is fixed to the inner walls of the first and second housings 5 and 8, respectively, via the second connecting posts 11 at both ends. This secures the storage cylinder 13 and facilitates its removal. The rotation of the motor 3 drives the housing and the storage cylinder 13 to rotate. The heat-conducting holes on the outer wall of the storage cylinder 13 allow the dryer 9 to remove moisture from the silkworm excrement fertilizer, achieving thorough drying. The second connecting rod 16 secures the motor 3, improving the stability of the device.
[0033] The outer casing 1 is made of 304 stainless steel, welded together with a wall thickness of 1.5mm, and coated with a high-temperature resistant and corrosion-resistant coating. The motor 3 installed on the left side of the casing is a three-phase asynchronous motor with a rated power of 2.2kW. Its output shaft is rigidly connected to the first connecting column 4 via a coupling. The first connecting column 4 is a solid 45# steel shaft with a diameter of 50mm. The right end of the first sleeve 5 is welded to it. Both the first sleeve 5 and the second sleeve 8 are semi-circular shells stamped from 316L stainless steel with a thickness of 3mm, with an outer diameter of 400mm and an axial length of 600mm. The first sleeve 6 and the second sleeve 10 are both seamless carbon steel tubes with an inner diameter of 30mm, welded to the outer and inner walls of the casings, respectively. The first connecting rod 7 is a 28mm diameter 304 stainless steel round rod, with a clearance fit to the first sleeve 6, with a fit tolerance of H8 / f7.
[0034] Please see Figure 3 The adsorption mechanism 2 includes a plurality of first magnetic blocks 201, which are respectively fixedly connected to the outer wall of the first connecting rod 7, and a second magnetic block 202 is fixedly connected to the inner wall of the first sleeve 6.
[0035] This solution uses the first magnetic block 201 and the second magnetic block 202 to fix the first shell 5 and the second shell 8, which improves the stability of the device and makes it easier for personnel to disassemble the device and remove the storage cylinder 13.
[0036] Please see Figure 1 The outer wall of the equipment housing 1 is provided with viewing windows 14 at both the front and rear ends. A control switch 15 is installed on the left side of the front of the outer wall of the equipment housing 1. The control switch 15 is electrically connected to the motor 3 and the dryer 9 respectively.
[0037] This design allows personnel to easily observe the internal conditions of the drying equipment by opening a viewing window 14. At the same time, the control switch 15 can control the motor 3 and the dryer 9 to be turned on or off, thus improving the practicality of the device.
[0038] Please see Figure 1 and Figure 4 A sliding groove 17 is provided on the right end of the inner wall of the equipment housing 1. A sealing plate 19 is slidably connected inside the sliding groove 17. A limiting plate 18 is fixedly connected to the front end of the outer wall of the sealing plate 19. A limiting groove 20 is provided on the rear end of the right side of the outer wall of the equipment housing 1. The limiting plate 18 and the limiting groove 20 are engaged.
[0039] In this design, a sliding groove 17 is opened on the right end of the inner wall of the equipment housing 1. The device can be sealed by setting a sealing plate 19. At the same time, a limiting plate 18 is fixed on the outer wall of the sealing plate 19, which makes it easy for personnel to pull the sealing plate 19 to remove the storage cylinder 13. Meanwhile, the limiting plate 18 will be stuck in the limiting groove 20, thereby limiting the sealing plate 19 and preventing the sealing plate 19 from falling off.
[0040] The storage cylinder 13 is made of 2mm thick 430 stainless steel, with evenly spaced 5mm diameter circular heat-conducting holes. The second connecting posts 11 at both ends are solid steel shafts with a diameter of 25mm, and are fitted with the second sleeve 10 using a transition fit. The dryer 9 uses an annular quartz tube heater with a power of 5kW, which is bolted to the upper surface of the connecting plate 12. The connecting plate 12 is made of 10mm thick Q235 steel plate and is welded to the inner bottom of the equipment shell 1. The first magnetic block 201 and the second magnetic block 202 of the adsorption mechanism 2 are both N42 grade neodymium iron boron permanent magnets, measuring 20mm × 10mm × 5mm, respectively embedded in the grooves on the outer wall of the first connecting rod 7 and the inner wall of the first sleeve 6, and sealed with epoxy resin.
[0041] The viewing window 14 is a double-layered tempered glass structure with a high-temperature resistant silicone sealing ring sandwiched in the middle, measuring 300mm × 200mm. The control switch 15 is a waterproof rotary switch, connected to the controllers of the motor 3 and the dryer 9 via wires. The sliding groove 17 is precision wire-cut, with a groove width of 12mm and a depth of 20mm, and is fitted with a wear-resistant polytetrafluoroethylene bushing. The sealing plate 19 is a 3mm thick 304 stainless steel plate with bent edges forming reinforcing ribs. The limiting plate 18 welded to its front end is a 40mm × 40mm square steel plate, which fits the limiting groove 20 with a clearance of 0.5mm.
[0042] Working principle:
[0043] Loading stage: Pull the limiting plate 18 outward to move the sealing plate 19 120mm to the right along the sliding groove 17, opening the right side channel of the equipment housing 1. Push the storage cylinder 13 filled with wet silkworm excrement horizontally into the equipment housing 1, so that the second connecting posts 11 at both ends are inserted into the second sleeves 10 inside the first sleeve 5 and the second sleeve 8, respectively. Manually press the second sleeve 8 to fully insert the first connecting rod 7 into the first sleeve 6. At this time, the first magnetic block 201 and the second magnetic block 202 generate an attraction force due to their opposite poles, realizing the rapid locking of the housing.
[0044] Drying operation: Close the sealing plate 19 until the limiting plate 18 engages with the limiting groove 20, and simultaneously start the motor 3 and dryer 9 via the control switch 15. The motor 3 drives the first connecting column 4 to rotate at a speed of 15 r / min, causing the first shell 5, the storage cylinder 13, and the second shell 8 to rotate as a whole around the axis. Under the action of centrifugal force, the silkworm excrement inside the storage cylinder 13 adheres to the cylinder wall and is loosened by tumbling with the cylinder. The hot air generated by the dryer 9 penetrates the material layer evenly through the heat conduction holes of the storage cylinder 13, and the moisture is discharged from the exhaust port at the top of the equipment shell 1 by the airflow generated by the rotation of the cylinder.
[0045] Unloading and maintenance: After drying is complete, turn off the equipment and wait for the temperature to drop below 50℃ before opening the sealing plate 19. Apply force to separate the first shell 5 from the second shell 8, and pull out the storage cylinder 13 after overcoming the magnetic attraction. After pouring out the finished fertilizer, the storage cylinder 13 can be disassembled for high-pressure water washing or replaced with a cylinder of different aperture to adapt to different material particle size requirements.
[0046] The above description is merely a preferred embodiment of this utility model; however, the protection scope of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and its improved concept, should be included within the protection scope of this utility model.
Claims
1. A silkworm excrement fertilizer production device, comprising an equipment casing (1), characterized in that: A motor (3) is provided on the left side of the outer casing (1) of the device. A first connecting post (4) is fixedly connected to the output end of the motor (3). A first housing (5) is fixedly connected to the right side of the outer wall of the first connecting post (4). A plurality of first sleeves (6) are fixedly connected at equal intervals to the right side of the outer wall of the first housing (5). A second housing (8) is provided on the right side of the first housing (5). A plurality of first connecting rods (7) are fixedly connected at equal intervals to the left side of the outer wall of the second housing (8). The first connecting rods (7) and the first sleeves (6) engage. The first housing (5) and the second housing (8) are connected. The inner walls of the first sleeve (5) and the second sleeve (8) are fixedly connected to a second sleeve (10). The storage cylinder (13) is provided inside the first sleeve (5) and the second sleeve (8). The left and right ends of the outer wall of the storage cylinder (13) are fixedly connected to a second connecting column (11). The second connecting column (11) and the second sleeve (10) are engaged. The bottom of the storage cylinder (13) is provided with a dryer (9). The bottom wall of the dryer (9) is fixedly connected to a connecting plate (12). The bottom wall of the connecting plate (12) is fixedly connected to the inner bottom wall of the equipment shell (1). The first sleeve (6) is provided with an adsorption mechanism (2).
2. The silkworm excrement fertilizer production device according to claim 1, characterized in that: The adsorption mechanism (2) includes a plurality of first magnetic blocks (201), which are respectively fixedly connected to the outer wall of the first connecting rod (7), and a second magnetic block (202) is fixedly connected to the inner wall of the first sleeve (6).
3. The silkworm excrement fertilizer production device according to claim 1, characterized in that: A second connecting rod (16) is fixedly connected to the middle of the bottom wall of the motor (3), and the end of the second connecting rod (16) is fixedly connected to the front side of the outer wall of the equipment housing (1).
4. The silkworm excrement fertilizer production device according to claim 1, characterized in that: The outer wall of the device housing (1) is provided with viewing windows (14) at both the front and rear ends.
5. The silkworm excrement fertilizer production device according to claim 1, characterized in that: A control switch (15) is installed on the left side of the front wall of the outer wall of the equipment housing (1). The control switch (15) is electrically connected to the motor (3) and the dryer (9).
6. The silkworm excrement fertilizer production device according to claim 1, characterized in that: A sliding groove (17) is provided on the right end of the inner wall of the equipment housing (1), and a sealing plate (19) is slidably connected inside the sliding groove (17).
7. The silkworm excrement fertilizer production device according to claim 6, characterized in that: The front end of the outer wall of the sealing plate (19) is fixedly connected to the limiting plate (18), and the rear end of the right side of the outer wall of the equipment shell (1) is provided with a limiting groove (20), and the limiting plate (18) and the limiting groove (20) are engaged.