Aerating device for organic waste aerobic fermentation

Abstract

The application discloses an organic waste aerobic fermentation aeration device, which comprises a hollow horizontal frame and telescopic aeration pipes. The hollow horizontal frame is horizontally fixed above a fermentation tank and adopts a hollow tubular structure. A main air cavity is formed in the hollow horizontal frame. One end of the main air cavity is connected with an aeration fan through a flange, and the other end is closed. A plurality of air path interfaces are arranged at equal intervals on the bottom of the hollow horizontal frame. Each air path interface is connected with one telescopic aeration pipe through a quick release connector. The telescopic aeration pipe comprises a plurality of mutually nested pipe sections and is composed of a main pipe section and a nested movable pipe section. The upper end of the main pipe section is fixed below the hollow horizontal frame and connected with the corresponding air path interface. The movable pipe section can be axially telescoped along the main pipe section. Each pipe section is provided with aeration holes along the pipe body. The aeration device can penetrate through the top to the bottom of the aerobic fermentation tank, uniform aeration is realized, and the telescopic aeration pipe does not affect the feeding and discharging of materials.

Description

Technical Field

[0001] This application relates to the field of aerobic fermentation, specifically to an aerobic fermentation aeration device for organic waste. Background Technology

[0002] Aerobic fermentation of organic waste is an environmentally friendly and sustainable treatment method. It cleverly utilizes aerobic microorganisms to decompose organic waste under sufficient oxygen conditions, transforming waste that might otherwise become an environmental burden into humus fertilizer beneficial to plant growth. This process not only reduces the amount of organic waste accumulated, but also generates heat through the respiration of microorganisms, promoting the rapid decomposition of organic matter and forming stable, harmless fertilizer.

[0003] Currently, there are many types of aeration devices used for aerobic fermentation, such as the aeration device for aerobic fermentation of organic solid waste disclosed in patent number CN202220232839.8. Existing aeration devices for aerobic fermentation can basically meet the usage requirements, but the following shortcomings still exist during use: Currently, for the convenience of material feeding and discharging, aeration devices for aerobic fermentation of organic waste are mostly fixed at the bottom or lower part of the fermentation tank. When the material layer is high, it is difficult for the aeration device to aerate to the higher material layers, resulting in insufficient aeration of the upper material. If the aeration pipes are distributed throughout the entire fermentation tank space, it will make material feeding and discharging difficult. Summary of the Invention

[0004] To address the aforementioned technical problems in the existing technology, the purpose of this application is to provide an aerobic fermentation aeration device for organic waste. Air is introduced into the retractable aeration device to aerate the fermentation pile. The aeration device is retractable and does not affect the feeding and discharging of materials. It can be used in the field of aerobic fermentation of organic waste such as kitchen waste, livestock and poultry manure, and sludge to achieve full vertical aeration of high material layers.

[0005] The technical solution adopted in this application is as follows: An aerobic fermentation aeration device for organic waste includes a hollow horizontal frame and telescopic aeration pipes. The hollow horizontal frame is horizontally fixed above the fermentation tank and has a hollow tubular structure with a main air chamber inside. One end is connected to an aeration fan via a flange, and the other end is closed. Multiple air passage interfaces are evenly spaced at the bottom of the hollow horizontal frame, and each air passage interface is connected to a telescopic aeration pipe via a quick-release connector. The telescopic aeration pipe includes several nested pipe sections, consisting of a main pipe section and nested movable pipe sections. The upper end of the main pipe section is fixed below the hollow horizontal frame and connected to the corresponding air passage interface. The movable pipe sections can extend and retract along the axial direction of the main pipe section. Each movable pipe section has aeration holes distributed along its body. It also includes a steel wire rope, with springs installed between each pair of adjacent pipe sections. One end of the steel wire rope passes through the top of the main pipe section and into its center, and then passes through the center of all the movable pipe sections before being fixedly connected to the bottom end of the innermost movable pipe section. The other end of the steel wire rope is connected to the drive mechanism. When the drive mechanism tightens the steel wire rope, it overcomes the spring force and retracts and compresses the movable pipe section. When the drive mechanism acts in the opposite direction to relax the steel wire rope, the movable pipe section is pulled out and elongated under the spring force. The drive mechanism includes an electric motor and a rotating shaft. The steel wire rope is wound on the rotating shaft. The electric motor can drive the rotating shaft to rotate in the forward or reverse direction, thereby tightening or loosening the steel wire rope.

[0006] Furthermore, in the nested connection structure of two adjacent pipe sections, a retaining ring is provided on the inner side of the bottom opening of the upper pipe section, and a convex ring is provided on the outer side of the top of the next adjacent pipe section. The retaining ring can limit and abut against the convex ring, which can prevent the movable pipe section from coming out during the expansion and contraction process; and a sealing rubber is provided on the inner side of the retaining ring to prevent gas from escaping from the gap between the two adjacent pipe sections during the expansion and contraction process of the movable pipe section.

[0007] Furthermore, the diameter of the aeration holes is 2-5 mm.

[0008] Furthermore, along the top-to-bottom direction, the spacing between the aeration holes on the moving pipe section gradually decreases.

[0009] Furthermore, the bottom end of the innermost active tube section is designed with a tapered head to reduce resistance when inserted into the material pile.

[0010] Furthermore, a horizontal perforated plate is provided on the inner side of the top opening of each pipe section, and the spring is connected to the center of the perforated plate to fix the spring; the wire rope passes through the center of the spring, one end of the wire rope is fixedly connected to the bottom end of the innermost movable pipe section, and the other end of the wire rope passes through the perforated plate of the main pipe section.

[0011] Furthermore, the lengths of each pipe segment are equal.

[0012] Furthermore, the hollow cross frame is anchored to the roof beam of the factory building by an I-beam fixing frame. The surface of the hollow cross frame is covered with a corrosion-resistant coating. A dustproof sealing ring is installed at the air passage interface below the hollow cross frame. The telescopic aeration pipe is made of wear-resistant material.

[0013] Compared with the prior art, the beneficial effects of the present invention are: the aeration device of the present invention can penetrate from the top to the bottom of the aerobic fermentation tank to achieve uniform aeration, and the aeration pipe is retractable and does not affect the material inlet and outlet. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall installation structure of the aeration device of the present invention; Figure 2 This is a cross-sectional structural schematic diagram of the aeration device of the present invention. Detailed Implementation

[0015] The present invention will be further described below with reference to specific embodiments, but the scope of protection of the present invention is not limited thereto.

[0016] An aerobic fermentation aeration device for organic waste, as shown in the comparison. Figures 1-2 The system includes a hollow horizontal frame 2 and a telescopic aeration pipe. The hollow horizontal frame 2 is horizontally fixed above the fermentation tank. It adopts a hollow tubular structure and forms a main air chamber inside. One end is connected to the aeration blower through a flange, and the other end is closed. Multiple air passage interfaces 3 are evenly spaced at the bottom of the hollow horizontal frame 2. Each air passage interface 3 is connected to a telescopic aeration pipe 4 through a quick-release connector.

[0017] The telescopic aeration pipe 4 comprises several nested pipe sections of equal length, specifically consisting of a main pipe section and nested movable pipe sections. The upper end of the main pipe section is fixed below the hollow cross frame 2 and connected to the corresponding air passage interface 3. The movable pipe sections can extend and retract axially along the main pipe section. Each movable pipe section has aeration holes 5 distributed along its body. In the nested connection structure between adjacent pipe sections, a retaining ring is provided on the inner side of the bottom opening of the upper pipe section, and a protruding ring is provided on the outer side of the top of the adjacent lower pipe section. The retaining ring can limit and abut against the protruding ring, preventing the movable pipe section from coming out during extension and retraction. Furthermore, a sealing rubber is provided on the inner side of the retaining ring to prevent gas from escaping from the gap between adjacent pipe sections during extension and retraction.

[0018] In the structure of several movable pipe sections of the telescopic aeration pipe 4, aeration holes with a diameter of 2-5mm are provided on the side walls of the pipe sections. The bottom end of the innermost movable pipe section is set with a conical head 6 to reduce the resistance when inserted into the material pile. Along the top-to-bottom direction, the hole spacing of the aeration holes 5 on the movable pipe sections gradually decreases.

[0019] The aeration device of this application also includes a wire rope 9, an electric motor 8, and a rotating shaft 7. A spring 10 is provided between each two adjacent pipe sections. One end of the wire rope 9 passes through the center of the main pipe section from the top outside of the main pipe section and passes through the center of the innermost moving pipe section before being fixedly connected to the bottom end of the innermost moving pipe section. The other end of the wire rope 9 is connected to the drive mechanism. When the drive mechanism tightens the wire rope, it overcomes the elastic force of the spring 10 and retracts and compresses the moving pipe section. When the drive mechanism acts in the opposite direction to relax the wire rope, the moving pipe section is pulled out and extended under the elastic force of the spring 10.

[0020] A horizontal perforated plate is installed on the inner side of the top opening of each pipe section. The spring is connected to the center of the perforated plate to fix the spring. The steel wire rope 9 passes through the center of the spring. One end of the steel wire rope 9 is fixedly connected to the bottom end of the innermost movable pipe section, and the other end of the steel wire rope 9 passes through the perforated plate of the main pipe section.

[0021] One end of the wire rope 9 passes through the top of the main pipe section, through the center of the spring, and is fixedly connected to the bottom end of the innermost movable pipe section. The other end of the wire rope 9 is wound around the rotating shaft 7. The electric motor 8 can drive the rotating shaft 7 to rotate forward or backward, thereby tightening or loosening the wire rope 9. The extension and retraction of the pipe requires the electric motor 8 to drive the rotating shaft 7 to rotate. When the rotating shaft 7 rotates and the wire rope tightens, it overcomes the elastic force of the spring 10 and retracts the movable pipe section. When the rotating shaft 7 rotates in the opposite direction and the wire rope loosens, the movable pipe section is pulled out and extended under the elastic force of the spring 10.

[0022] The hollow cross frame 2 is anchored to the roof beam of the factory building via the I-beam fixing frame 1.

[0023] Furthermore, in this application, the upper end of the wire rope 9 can be directly passed upward from the air passage interface 3 and the hollow cross frame 2 in sequence, and wound around the rotating shaft 7.

[0024] The key technical features of this application include: 1. The surface of the hollow cross frame is covered with a corrosion-resistant coating (such as polytetrafluoroethylene), and a dustproof sealing ring is provided at the gas line interface; 2. The telescopic aeration pipe is made of wear-resistant material, especially the tapered head at the bottom end of the innermost movable pipe section, which is made of high-strength wear-resistant material; 3. The extension and retraction process of the telescopic aeration pipe 4 and the start and stop sequence of the aeration fan are as follows: before the telescopic aeration pipe 4 extends, the aeration fan is turned on; after the telescopic aeration pipe 4 extends and retracts, the aeration fan is turned off to prevent the telescopic aeration pipe 4 from becoming blocked.

[0025] Example: Figure 1 and Figure 2 As shown, the hollow cross frame 2 is made of DN200 stainless steel pipe and is horizontally installed 600mm above the fermentation tank, anchored to the roof beam of the plant via I-beam fixing frame 1. The main air chamber inside the hollow cross frame 2 is connected to a 7.5kW centrifugal aerator, with an adjustable airflow range of 500-2000m³ / h. 3 / h. Six DN100 air inlets 3 are welded to the lower part of the hollow cross frame 2. Each air inlet is connected to a telescopic aeration pipe 4 via clamps. The telescopic aeration pipe 4 consists of five nested pipe sections. The outermost main pipe section is a DN100 stainless steel pipe. The dimensions of the remaining four movable pipe sections, from the outside in, are DN92, DN84, DN76, and DN68, respectively. The bottom of the innermost pipe section is designed with a conical head 6. Each pipe section is 500mm long.

[0026] The telescopic aeration pipe 4 has a two-layer nested structure between two adjacent pipe sections, with a gap of about 3mm between the two layers. The extension and retraction of the movable pipe section requires the electric motor 8 to drive the rotating shaft 7 to rotate. A steel wire rope 9 is wound on the rotating shaft 7. After the steel wire rope passes through the center of the spring, it is connected to and fixed to the top of the bottom of the innermost pipe section.

[0027] Springs 10 are installed between adjacent pipe sections. When the rotating shaft 7 rotates and tightens the wire rope, it overcomes the elastic force of the springs 10 and retracts the movable pipe section into compression. When the rotating shaft 7 rotates in the opposite direction and loosens the wire rope, the movable pipe section is pulled out and extended under the elastic force of the springs 10. Aeration holes 5 are distributed along the pipe body of the movable pipe section, with a hole diameter of 3mm. Along the top-to-bottom direction, the hole spacing gradually decreases from 10cm at the top of the first movable pipe section to 5cm at the end of the last movable pipe section, ensuring uniform diffusion of airflow in the material pile.

[0028] Workflow: S1 Feeding Stage: When the material conveying equipment starts, a retraction command is sent to the electric motor 8, the movable pipe section retracts into the main pipe section, and the telescopic aeration pipe is completely retracted above the material to avoid interference with the loader. S2 fermentation stage: After the material is filled, the electric motor 8 drives the rotating shaft to move, the movable pipe section extends, the conical head 6 is inserted into the material pile to 5cm from the bottom of the tank, and the aeration blower is started to supply oxygen. S3 Discharge Stage: After fermentation is complete, the aeration pipe is retracted again, and the pipe is kept in a state of avoidance during the process of emptying the material pile.

[0029] When the telescopic aeration pipe retracts and extends, air is introduced first, and then the pipe extends.

[0030] The contents described in this specification are merely an enumeration of the implementation forms of the inventive concept, and the scope of protection of this invention should not be regarded as limited to the specific forms described in the embodiments.

Claims

1. An aerobic fermentation aeration device for organic waste, characterized in that, Includes a hollow cross frame (2) and a telescopic aeration pipe. The hollow cross frame (2) is horizontally fixed above the fermentation tank. It adopts a hollow tubular structure and forms a main air chamber inside. One end is connected to an aeration blower through a flange, and the other end is closed. Multiple air passage interfaces (3) are evenly spaced at the bottom of the hollow cross frame (2). Each air passage interface (3) is connected to a telescopic aeration pipe (4) through a quick-release connector. The telescopic aeration pipe (4) includes several nested pipe sections, consisting of a main pipe section and nested movable pipe sections. The upper end of the main pipe section is fixed below the hollow cross frame (2) and connected to the corresponding air passage interface (3). The movable pipe section can extend and retract along the axial direction of the main pipe section. Each movable pipe section has aeration holes (5) distributed along the pipe body. It also includes a wire rope (9), and a spring (10) is provided between two adjacent pipe sections. One end of the wire rope (9) passes through the center of the main pipe section from the top outside of it, and passes through the center of the center of all the moving pipe sections before being fixedly connected to the bottom end of the innermost moving pipe section. The other end of the wire rope (9) is connected to the drive mechanism. When the drive mechanism tightens the wire rope, it overcomes the elastic force of the spring (10) and retracts and compresses the movable tube section. When the drive mechanism acts in the opposite direction to loosen the wire rope, the movable tube section is pulled out and elongated under the elastic force of the spring (10). The drive mechanism includes an electric motor (8) and a rotating shaft (7). A steel wire rope (9) is wound around the rotating shaft (7). The electric motor (8) can drive the rotating shaft (7) to rotate in the forward or reverse direction, thereby tightening or loosening the steel wire rope (9).

2. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, In the nested connection structure of two adjacent pipe sections, a retaining ring is provided on the inner side of the bottom opening of the upper pipe section, and a convex ring is provided on the outer side of the top of the next adjacent pipe section. The retaining ring can limit and abut against the convex ring, which can prevent the movable pipe section from coming out during the expansion and contraction process; and a sealing rubber is provided on the inner side of the retaining ring to prevent gas from escaping from the gap between the two adjacent pipe sections during the expansion and contraction process.

3. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, The aperture of the aeration hole (5) is 2-5 mm.

4. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, Along the top-to-bottom direction, the spacing between the aeration holes (5) on the moving pipe section gradually decreases.

5. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, The bottom end of the innermost active tube section is set with a conical head (6) to reduce resistance when inserting into the material pile.

6. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, A horizontal perforated plate is installed on the inner side of the top opening of each pipe section. The spring is connected to the center of the perforated plate to fix the spring. The wire rope (9) passes through the center of the spring. One end of the wire rope (9) is fixedly connected to the bottom end of the innermost movable pipe section. The other end of the wire rope (9) passes through the perforated plate of the main pipe section.

7. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, The lengths of each pipe segment are equal.

8. The aerobic fermentation aeration device for organic waste as described in claim 1, characterized in that, The hollow cross frame (2) is anchored to the roof beam of the factory building by the I-beam fixing frame (1). The surface of the hollow cross frame (2) is covered with a corrosion-resistant coating. A dustproof sealing ring is installed at the air passage interface (3) below the hollow cross frame (2). The material of the telescopic aeration pipe (4) is wear-resistant material.

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