Turning and throwing shaft for industrial silkworm excrement fermentation corollary equipment

Abstract

The utility model relates to the field of silkworm excrement fertilizers, in particular to a turning and throwing shaft for industrial silkworm excrement fermentation corollary equipment, which comprises a shaft body and turning and throwing parts, the turning and throwing parts are distributed on the shaft body in a spiral curve manner, and the spiral curve extends from one end of the shaft body to the other end of the shaft body and is just wound for a circle; the turning and throwing device has the advantages that the turning and throwing pieces are distributed on the turning and throwing shaft in a spiral curve mode, the spiral curve is only wound on the shaft by one circle, it is guaranteed that only one turning and throwing piece enters silkworm excrement every time turning and throwing are conducted, the turning and throwing effect is guaranteed, meanwhile, the turning and throwing resistance can be greatly reduced, and therefore the cost and the requirement for equipment are reduced.

Description

Technical Field

[0001] The utility model relates to the field of silkworm excrement fertilizer, in particular to a turning shaft used for industrial silkworm excrement fermentation supporting equipment. Background Art

[0002] Silkworm excrement, the feces excreted by silkworms after feeding on mulberry trees, is rich in nutrients such as crude protein, crude fat, crude fiber, soluble nitrogen-free matter, ash, chlorophyll, vitamins, and pectin, making it an excellent fertilizer and feed for pigs, sheep, and fish. However, silkworm excrement should not be used directly as fertilizer. Applying untreated silkworm excrement directly may cause the following problems: 1. It may carry harmful microorganisms. Untreated silkworm excrement may contain pathogens or insect eggs that are detrimental to plant growth, leading to the spread of disease. 2. It may release nutrients at an inappropriate rate. Direct application of untreated silkworm excrement may cause the organic matter in it to decompose at a rate inconsistent with the plant's nutrient absorption rhythm, leading to nutrient loss or oversupply in a short period of time. 3. It may also cause root burn. Fresh silkworm excrement releases heat and may produce chemicals during decomposition. Direct contact with plant roots can cause root burn.

[0003] Straw is the general term for the stems and leaves of mature crops, typically the remaining portion after the harvest of coarse grains such as wheat, rice, corn, potatoes, rapeseed, and cotton. In the past, straw was typically burned, but due to concerns about the environmental damage, public health, and safety hazards it poses, it has now been completely banned. In southern China, rice can be grown for multiple seasons, each generating a significant amount of rice straw. The high labor costs associated with recycling this straw, coupled with its low economic value after processing, have made it a major challenge in rice straw disposal.

[0004] If rice straw and silkworm gizzard are used as raw materials for low-cost factory-based silkworm gizzard fertilizer production, it can not only solve the straw processing problems of rice growers, but also solve the silkworm gizzard processing problems of mulberry silkworm breeders, and also obtain higher economic benefits.

[0005] In order to realize the above-mentioned process idea, it is necessary to develop a matching silkworm sand fertilizer production equipment. The equipment includes a roller shaft on which are arranged turning parts for turning the silkworm sand. However, the inventor found that due to the high viscosity of silkworm sand, the turning resistance is very large. If multiple turning parts are used for turning at the same time, there will be high process costs and performance requirements for the structure, strength and driving force of the turning shaft. Therefore, it is necessary to improve the turning shaft structure.

[0006] Based on this, this case is brought forward. Utility Model Content

[0007] The purpose of the utility model is to provide a turning shaft for industrial silkworm excrement fermentation supporting equipment, which can realize the turning and tossing of the mixture of silkworm excrement and rice straw.

[0008] To achieve the above purpose, the technical solution of the utility model is as follows:

[0009] A turning shaft for industrial silkworm excrement fermentation supporting equipment comprises a shaft body and a turning piece. The turning piece is distributed on the shaft body in a spiral curve, and the spiral curve extends from one end of the shaft body to the other end, making exactly one revolution.

[0010] Furthermore, the flipping member includes a mixing arm and a mixing blade, one end of the mixing arm is vertically fixed on the outer wall of the flipping shaft, and the mixing blade is fixed on the other end of the mixing arm.

[0011] Furthermore, the side of the mixing blade used for turning the mixture is a tooth rake type.

[0012] Furthermore, reinforcing ribs are provided between the mixing blades and the mixing arms.

[0013] The advantages of the present invention are that the flipping pieces are distributed in a spiral curve on the flipping shaft, and the spiral curve only rotates around the shaft once, ensuring that only one flipping piece enters the silkworm litter each time the flipping is performed. While ensuring the flipping effect, the flipping resistance can be greatly reduced, thereby reducing the cost and requirements for the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 Schematic diagram of the process of industrial silkworm excrement fermentation in the embodiment;

[0015] Figure 2 Schematic diagram of the three-dimensional structure of the supporting equipment for the factory-scale silkworm excrement fermentation process in the embodiment;

[0016] Figure 3 Schematic diagram of the internal structure of the silkworm excrement fermentation process supporting equipment in the embodiment;

[0017] Figure 4 Schematic diagram of the driving part of the supporting equipment for the silkworm excrement fermentation process in the embodiment;

[0018] Figure 5 Schematic diagram of the structure of the turning shaft and spray assembly of the supporting equipment for the silkworm excrement fermentation process in the embodiment;

[0019] Figure 6 Schematic diagram of the three-dimensional structure of the flip shaft in the embodiment;

[0020] Figure 7 This is a principle block diagram of the control system of the supporting equipment in the embodiment;

[0021] Description of labels

[0022] 1. Fermentation tank; 2. Track; 3. Chassis; 301. Track wheel; 302. Scroll; 303. Dustproof cloth; 4. Flipping shaft; 5. Flipping piece; 501. Mixing arm; 502. Mixing blade; 503. Reinforcement rib; 6. Drive unit; 7. Spray assembly. DETAILED DESCRIPTION

[0023] The present invention is further described in detail below in conjunction with the embodiments. It should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. used in the text to indicate directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction. Therefore, they should not be understood as limiting the present invention.

[0024] like Figure 1 As shown, this embodiment proposes a factory-based silkworm excrement fermentation process, comprising the following steps:

[0025] S1. Crushing the rice straw to increase the contact area between the rice straw and the silkworm excrement is beneficial to the microbial activity during the fermentation process;

[0026] S2. The moisture content of the crushed rice straw is adjusted. The moisture content can be adjusted by adding water or drying and dehydrating. The main purpose is to optimize the fermentation conditions and improve the quality of the fertilizer. The moisture content is preferably adjusted to about 55%;

[0027] S3. Add silkworm excrement and toss evenly to form a mixture. The mixing ratio of silkworm excrement and rice straw powder can be determined according to the actual application scenario of the fertilizer, such as 1:1, 1:2 or 1:3. In order to promote fermentation, a fermentation agent (such as EM bacteria, yeast, etc.) or activated compost can be added as an inoculum;

[0028] S4. According to the moisture content of silkworm grit and the moisture content of rice straw crushed at the end, the moisture content of the mixture is adjusted. For example, in step S1, the moisture content of rice straw crushed at the end has been adjusted to 55%. To ensure the best fermentation environment, when the moisture content of silkworm grit is 40% and the mixture ratio of silkworm grit and rice straw crushed is 1:1, the moisture content can be continued until the moisture content of the mixture reaches 55%;

[0029] S5. Real-time monitoring of the temperature and humidity of the mixture. If the temperature drops to the threshold, the mixture needs to be turned over and thrown; if the humidity drops to the threshold, spray water mist while turning and throwing to adjust the humidity; fermentation activity requires sufficient oxygen, but the viscosity of silkworm litter is very high, and oxygen is not easy to enter after fermentation. With the lack of oxygen, fermentation activity will weaken or even stop, resulting in a drop in the temperature within the fermentation tank 1. At this time, oxygen can be added by turning and throwing; at the same time, fermentation activity also requires a guarantee of environmental humidity. The appropriate moisture content is the basis for promoting microbial activity. By turning and throwing and adding water, to ensure the best fermentation environment;

[0030] Of course, during the fermentation process, frequent turning and tossing should not be done. Frequent turning and tossing will cause the accumulated temperature inside the pile to drop, affecting the fermentation speed. Therefore, this embodiment also proposes a supporting equipment for the factory-scale silkworm litter fermentation process, which realizes the automatic turning and tossing of the fermentation tank 1 by monitoring the temperature and humidity. See below for details.

[0031] S6. Until the fermentation is completed.

[0032] During the mixed fermentation process of silkworm feces and straw, microorganisms (such as bacteria, fungi, etc.) decompose organic matter, such as protein, cellulose and hemicellulose in silkworm feces, and cellulose, hemicellulose and lignin in straw, and break down complex organic macromolecules into smaller molecules, such as amino acids, fatty acids, sugars, etc. These small molecule nutrients are further absorbed and utilized by microorganisms, part of which is converted into microorganisms, and the other part is converted into forms that can be directly absorbed and utilized by plants, such as ammonia nitrogen, nitrate nitrogen, phosphate, etc. At the same time, heat is generated during the fermentation process, which causes the temperature of the pile to rise. High temperature helps kill harmful pathogens, parasite eggs and weed seeds, and ultimately forms high-quality organic fertilizer.

[0033] like Figures 2 to 7 As shown, this embodiment also proposes a supporting equipment for the above-mentioned factory-scale silkworm excrement fermentation process, including a fermentation tank 1, a mobile sand throwing platform, a spray component 7 and a control system.

[0034] Specific reference Figure 1 The fermentation tank 1 is a rectangular brick tank used for the accumulation and fermentation of the mixture. Tracks 2 are installed on the top of the two side walls in the longitudinal direction of the tank. Figure 2 As shown, the mobile sand throwing platform includes a chassis 3, a flipping shaft 4 and a driving unit 6. The chassis 3 spans above the fermentation tank 1. Track wheels 301 that cooperate with the track 2 are provided on both sides of the chassis 3 in the width direction to achieve reciprocating movement along the length direction of the fermentation tank 1. The flipping shaft 4 is installed below the chassis 3 through a bearing and is arranged along the width direction of the fermentation tank 1. Figure 3As shown, the driving part 6 is used to drive the movement of the chassis 3 and the rotation of the flipping shaft 4; the flipping shaft 4 is provided with a plurality of flipping members 5 for flipping the mixture. Of course, the driving part 6 can also be in other forms. Figure 4 Only one form is given. Figure 5 As shown, spray assemblies 7 are provided on both sides of the moving direction of the chassis 3 and are used to spray water mist onto the mixture. They may be in the form of a water pipe and a water mist nozzle. To ensure that the water mist enters the pile, when the chassis 3 moves forward to the right, the spray pipe on the left sprays water mist, and when the chassis 3 moves forward to the left, the spray pipe on the right sprays water mist.

[0035] To implement the control method shown in step S5 above, the control system of this embodiment is as follows: Figure 7 As shown, it includes a control center, a temperature and humidity sensor, a drive unit 6 controller and a spray component controller; the temperature and humidity sensor is used to monitor the temperature and humidity of the mixture, and feed back the monitoring data to the control center; the control center determines whether the drive unit 6 and the spray component 7 need to be started according to the feedback signal, and sends a control signal to the drive unit 6 controller and the spray component controller; the drive unit 6 controller is used to control the start and stop of the drive unit 6; the spray component controller is used to control the start and stop of the spray component 7.

[0036] Since the viscosity of silkworm litter is high, the resistance to flipping is large. If multiple flipping members 5 are flipped at the same time, the structure, strength and driving force of the flipping shaft 4 will have high process cost and performance requirements. Figure 6 As shown, the flipping member 5 is distributed on the flipping shaft 4 in a spiral curve. The spiral curve extends from one end of the flipping shaft 4 to the other end and rotates exactly once. This ensures that only one flipping member 5 enters the silkworm excrement each time the silkworm excrement is flipped. While ensuring the flipping effect, it can also greatly reduce the flipping resistance, thereby reducing the cost and requirements of the equipment. In this embodiment, the flipping member 5 includes a mixing arm 501 and a mixing blade 502. One end of the mixing arm 501 is vertically fixed to the outer wall of the flipping shaft 4, and the mixing blade 502 is fixed to the other end of the mixing arm 501. The side of the mixing blade 502 for flipping the mixture is a tooth rake type. At the same time, in order to improve the connection strength between the mixing blade 502 and the mixing arm 501, a reinforcing rib 503 is also provided between the mixing blade 502 and the mixing arm 501.

[0037] Preferably, a counterweight is provided in the chassis 3 near the track wheel 301 to increase the weight of the chassis 3 so that it can move stably on the track 2 and avoid the reaction force during flipping that lifts up the chassis 3.

[0038] As a preference, Figure 2As shown, brackets are provided on both sides of the moving direction of the chassis 3, and a reel 302 is provided on the bracket. A dustproof cloth 303 is wound on the reel 302. The dustproof cloth 303 on both sides, the bottom surface of the chassis, and the side walls of the fermentation tank 1 enclose the turning area to form a relatively closed turning space to prevent the flying of rice straw fragments.

[0039] The above embodiments are only used to illustrate the concept of the present invention, and are not intended to limit the protection of the present invention. Any non-substantial changes to the present invention using this concept should fall within the scope of protection of the present invention.

Claims

1. A turning shaft for industrial silkworm excrement fermentation equipment, comprising a shaft body and a turning piece, characterized in that: The flipping pieces are distributed on the shaft body in a spiral curve, and the spiral curve extends from one end of the shaft body to the other end, and rotates around once.

2. The turning shaft for industrial silkworm excrement fermentation equipment according to claim 1, characterized in that: The turning and throwing member includes a mixing arm and a mixing blade. One end of the mixing arm is vertically fixed on the outer wall of the turning and throwing shaft, and the mixing blade is fixed on the other end of the mixing arm.

3. The turning shaft for industrial silkworm excrement fermentation equipment according to claim 2, characterized in that: The sides of the mixing blade used for turning the mixture are of the toothed rake type.

4. The turning shaft for industrial silkworm excrement fermentation equipment according to claim 2, characterized in that: A reinforcing rib is provided between the mixing blade and the mixing arm.

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