Courtyard organic household garbage fermentation bag

Abstract

The utility model relates to the technical field of household garbage treatment, in particular to a courtyard organic household garbage fermentation bag which comprises a woven bag, and a support used for opening the woven bag is arranged in the woven bag. A top cover is arranged at a top opening of the woven bag, a discharge port capable of being opened and closed is formed in the bottom of the side wall, and side wall air inlets capable of being opened and closed are evenly distributed in the side wall; a middle ventilation pipeline communicated with the outside of the woven bag through a first connecting pipeline is vertically arranged in the woven bag, and a plurality of ventilation holes are evenly distributed in the middle ventilation pipeline. The first connecting pipeline is arranged on the side wall of the woven bag in a penetrating mode, the inner end of the first connecting pipeline is communicated with the middle ventilation pipeline, the outer end of the first connecting pipeline is detachably connected with an outlet of the high-pressure gas cylinder, and a quick-release gas valve is arranged at the outlet of the high-pressure gas cylinder. Under the condition that an electromechanical device and high-intensity manual labor are not needed, the aerobic fermentation process of the organic wet garbage in the kitchen of the resident is reasonably controlled, and in-situ harmless and resourceful treatment is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of domestic waste treatment, in particular to a courtyard organic domestic waste fermentation bag. Background Art

[0002] Household waste contains a significant amount of wet organic kitchen waste. While waste separation is widely implemented in cities and some rural areas, the scattered sources of waste preclude dedicated collection and centralized treatment, unlike restaurant and canteen waste. This results in the generation of large quantities of leachate during the compression, transportation, and storage of household waste at incineration plants. Leachate, a highly concentrated organic waste stream with complex composition, poses a significant threat to environmental hygiene and is both difficult and costly to treat.

[0003] Humus, rich in nitrogen, phosphorus, and potassium, enhances soil's ability to absorb water and retain nutrients, making it an excellent addition to gardens and balconies, as well as landscaping. Mixing organic wet kitchen waste with discarded express packaging, waste paper, yard weeds, and fallen leaves can produce stable humus through fermentation. This not only digests wet waste locally, avoiding environmental pollution, but also promotes resource recycling.

[0004] Aerobic fermentation of organic matter is characterized by a short fermentation time and little or no odor, but this method has strict requirements on material density, moisture content, and oxygen supply conditions. Organic domestic wet garbage has a high moisture content and low porosity between materials, making it easy for anaerobic reactions to occur inside. If traditional manual turning of the pile is used for oxygen supply, the labor intensity and labor costs are very high. At present, aerobic fermentation mostly uses mechanical stirring, mechanical turning, fan oxygen supply and other methods to control the fermentation process, but the cost and conditions of using these electromechanical devices limit the widespread application of decentralized on-site aerobic fermentation treatment of residential domestic garbage. Utility Model Content

[0005] In response to the above technical problems, the purpose of the utility model is to provide a courtyard organic domestic waste fermentation bag, which can reasonably control the aerobic fermentation process of residents' kitchen organic wet waste without the need for electromechanical devices and high-intensity manual labor, thereby realizing on-site harmless and resource-based treatment.

[0006] The purpose of the present invention is achieved by adopting the following technical solutions. According to the present invention, a courtyard organic household waste fermentation bag comprises a woven bag, wherein a bracket for holding the woven bag open is provided inside the woven bag, a top opening of the woven bag is provided with a top cover, a discharge port that can be opened and closed is provided at the bottom of the side wall, and air inlets that can be opened and closed are evenly distributed on the side wall; a middle ventilation pipe is vertically provided inside the woven bag and is connected to the outside of the woven bag through a first connecting pipe, and a plurality of air holes are evenly distributed on the middle ventilation pipe; the first connecting pipe is passed through the side wall of the woven bag, the inner end of the first connecting pipe is connected to the middle ventilation pipe, and the outer end is detachably connected to the outlet of the high-pressure gas cylinder, and the outlet of the high-pressure gas cylinder is provided with a quick-opening air valve.

[0007] Furthermore, a steel ring is respectively wrapped and fixed on the bottom and top openings of the woven bag, and a cylindrical steel wire mesh is arranged inside the woven bag.

[0008] Furthermore, a layer of nylon mesh is provided between the steel mesh and the inner wall of the woven bag.

[0009] Furthermore, a section of the arc of the top cover is fixedly connected to the top opening of the woven bag, and the remaining arc is detachably connected to the top opening of the woven bag through an arc-shaped zipper assembly.

[0010] Furthermore, a normally open rubber tube is vertically installed on the top cover, and the rubber tube passes through the top cover.

[0011] Furthermore, the side wall air inlet is in the shape of a uniformly arranged spiral line extending from the bottom to the top, and a plurality of spiral zipper groups are installed along the side wall air inlet.

[0012] Furthermore, an inverted U-shaped opening is provided at the bottom of the side wall of the woven bag, and an inverted U-shaped zipper assembly is provided on the inverted U-shaped opening.

[0013] Furthermore, a plurality of nylon tubes connected in sequence are vertically arranged in the middle of the woven bag, and two adjacent nylon tubes are connected by a joint. The top end of the top nylon tube is connected to a nylon plug through a joint. The side wall opening of one of the nylon tubes is detachably connected to the outlet of the high-pressure gas cylinder through a first connecting pipe. The bottom end of the bottom nylon tube is provided with a flange, which is fixedly connected to the bottom of the woven bag, and a plurality of air holes are circumferentially distributed on the joint.

[0014] Furthermore, the inlet of the high-pressure gas cylinder is equipped with a switch valve, the other end of the switch valve is connected to the gas nozzle through a pipe, the other end of the quick-open gas valve is connected to the second connecting pipe, a quick-plug connector is provided at the outer end of the first connecting pipe, the first connecting pipe is detachably connected to the second connecting pipe through the quick-plug connector, and the high-pressure gas cylinder is equipped with a pressure gauge.

[0015] Furthermore, an annular rubber plate is provided on the side wall of the woven bag, and the first connecting pipe is provided inside the annular rubber plate.

[0016] Compared with the prior art, the advantages of the present invention are as follows: woven bags with a wide range of sources are made into fermentation bags through simple processing, and the oxygen supply for microbial metabolism in the material near the inner wall of the fermentation bag is enhanced by opening and closing the side wall air inlets at different positions on the side wall of the woven bag; a mobile high-pressure gas cylinder is used to intermittently force oxygen to be supplied to the middle material layer through the pipe in the center of the fermentation bag, and at the same time, the compressed air suddenly released loosens the compressed material in the middle and lower parts due to its own weight and excess moisture. The increased porosity between the materials after loosening effectively improves the natural oxygen supply efficiency during normal pressure operation; the garbage fermentation bag constructed with simple materials can realize the adjustment of process parameters in the aerobic fermentation process of residents' domestic garbage without the need for electromechanical power and heavy manual operation; the fermentation bag is low in cost and easy to operate, and can be widely used in courtyards, rooftops, green belts, parks, and nurseries. While domestic organic garbage is harmlessly treated on site, resources can also be recycled through the humus produced.

[0017] The above description is only an overview of the technical solution of the present invention. In order to more clearly understand the technical means of the present invention, it can be implemented in accordance with the contents of the specification. In addition, in order to make the above and other purposes, features and advantages of the present invention more obvious and easy to understand, the following preferred embodiments are specifically cited and described in detail with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of an embodiment of a courtyard organic domestic waste fermentation bag of the present utility model.

[0019] Reference numerals

[0020] 1. Woven bag; 2. Spiral zipper assembly; 3. Steel mesh; 4. Nylon mesh; 5. Curved zipper assembly; 6. Top cover; 7. Rubber tube; 8. Steel ring; 9. Nylon plug; 10. Nylon tube; 11. Connector; 12. Annular rubber sheet; 13. Flange; 14. U-shaped zipper assembly; 15. Quick-connect connector; 16. Quick-release valve; 17. High-pressure gas cylinder; 18. On / off valve; 19. Gas nozzle; 20. Pressure gauge. DETAILED DESCRIPTION

[0021] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments.

[0022] like Figure 1The figure shows an embodiment of a yard organic household waste fermentation bag of the present invention. The fermentation bag comprises a woven bag 1, a wire mesh 3, a nylon mesh 4, a top cover 6, a nylon tube 10, and a high-pressure gas cylinder 17. A steel ring 8 is wrapped around and fixed to the bottom and top openings of the woven bag 1. The cylindrical wire mesh 3 is set inside the woven bag 1. The steel ring 8 and the wire mesh 3 support the woven bag 1 to form a cylindrical container.

[0023] In this embodiment, the inner diameter of the steel ring 8 is 1 to 1.2 meters, and the material used is steel bars with a diameter of 6 to 8 mm. The steel ring 8 is sewn with nylon thread to the bottom and top openings of the woven bag 1. The height of the steel mesh 3 is 1.2 to 1.4 meters, and it can be spliced in sections. The aperture is 30×30 mm, and the steel wire diameter is 3 mm.

[0024] In this embodiment, the fermentation bag is made of a woven bag made of common materials such as polypropylene, polyethylene, nylon, polyester, etc. with certain waterproof properties as a main body.

[0025] Top cover 6 is made of the same material as woven bag 1. A section of top cover 6 is fixedly connected to the top opening of woven bag 1, while the remaining section is detachably connected to the top opening of woven bag 1 via an arc-shaped zipper assembly 5. The length of the arc where top cover 6 is fixedly connected to the top opening is shorter than the length where it is detachably connected to the top opening. Opening arc-shaped zipper assembly 5 allows the top opening of woven bag 1 to be essentially fully opened, facilitating the unloading of materials.

[0026] In this embodiment, one-quarter of the circumference of the top cover 6 is sewn to the opening of the woven bag 1 with nylon thread, and the remaining three-quarters are connected with an arc-shaped zipper assembly 5, which has a two-way slider. When the arc-shaped zipper assembly 5 is opened, it serves as the inlet for adding fermentation raw materials. During normal operation of the fermentation bag, the arc-shaped zipper assembly 5 is closed.

[0027] A normally open rubber tube 7 is vertically mounted on the edge of the top cover 6. The rubber tube 7 runs through the top cover 6 and is used to discharge volatile water produced during the growth and metabolism of microorganisms. In this embodiment, the rubber tube 7 is 60 mm high and has an inner diameter of 25 mm.

[0028] A layer of nylon mesh 4 is provided as a lining between the wire mesh 3 and the inner wall of the woven bag 1. In this embodiment, the nylon mesh 4 is fixed to the wire mesh 3 by tying with nylon thread, and the aperture of the nylon mesh 4 is 3×3 mm.

[0029] The woven bag 1 has a sidewall opening on its circumferential outer wall, forming a sidewall air inlet. The sidewall opening forms a spiral line extending from the bottom to the top, and the spiral line is evenly arranged. Four spiral zipper groups 2 are installed along the sidewall opening to close the sidewall opening. When the sidewall opening needs to be opened, the spiral zipper groups 2 are opened.

[0030] In this embodiment, four spiral zipper groups 2 are sewn to the side wall of the woven bag 1 with nylon thread, and the zippers use bidirectional sliders. The four spiral zipper groups 2 are evenly arranged along the spiral line and can circle the outer wall of the woven bag 1 for at least two circumferences. The starting and ending points of the side wall opening are each 10% of the total height of the woven bag from the bottom and top steel rings 8, respectively. That is, the vertical height of the side wall opening is 80% of the total height of the woven bag. By opening the spiral zipper groups 2 at different heights, the oxygen supply required for microbial metabolism in the material near the side wall of the woven bag is enhanced. After the spiral zipper groups 2 are opened, the nylon mesh 4 can prevent the internal material from leaking.

[0031] The bottom of the sidewall of the woven bag 1 has a roughly inverted U-shaped opening, allowing it to be opened into a roughly rectangular bottom opening. A roughly inverted U-shaped zipper assembly 14 is positioned above the inverted U-shaped opening to close and open the bottom opening. When the U-shaped zipper assembly 14 is fully opened, the bottom of the sidewall of the woven bag 1 forms a roughly rectangular bottom opening, which serves as a discharge port for daily material discharge and excess moisture removal. In this embodiment, the U-shaped zipper assembly 14 is sewn to the bottom of the sidewall of the woven bag 1 with nylon thread.

[0032] A nylon tube 10 is vertically installed in the middle of the woven bag 1. In this embodiment, four sections of nylon tubes 10 are vertically installed in the woven bag 1. Two adjacent sections of nylon tubes 10 are connected by joints 11. The top of the topmost nylon tube 10 is connected to a nylon plug 9 via joint 11. The sidewall opening of one of the nylon tube sections 10 is connected to the outlet of a high-pressure gas cylinder 17 outside the woven bag 1 via a pipe.

[0033] A flange 13 is provided at the bottom end of the nylon tube 10 at the bottom. Nylon thread is passed through the holes around the flange 13 and sewn to the bottom of the woven bag 1 to keep the nylon tube 10 in an upright state. At the same time, the flange 13 blocks the bottom end of the nylon tube 10.

[0034] The outlet of high-pressure gas cylinder 17 is equipped with a quick-release valve 16, and the inlet of high-pressure gas cylinder 17 is equipped with an on-off valve 18. A nozzle 19 is installed on the other side of on-off valve 18. Nozzle 19 is threadedly connected to on-off valve 18 via a reducing tube. A manually operated air pump fills high-pressure gas cylinder 17 with compressed air through nozzle 19 and on-off valve 18. Nozzle 19 opens when connected to the pump and closes when disconnected.

[0035] The quick-release valve 16 is manually pressed to open, which can instantly release the high-pressure gas filled in the high-pressure gas cylinder 17. In addition to forcing oxygen to the growth and metabolism of microorganisms in the material in the middle of the fermentation bag, the instantaneous high pressure also has the effect of loosening the material, improving the low porosity of the material formed by its own weight, which is conducive to improving the daily natural oxygen supply efficiency.

[0036] The pipe between the quick-release air valve 16 and the nylon tube 10 is divided into two sections: a first connecting pipe connected to the nylon tube 10 and extending through the side wall of the woven bag 1; and a second connecting pipe connected to the quick-release air valve 16. The first and second connecting pipes are connected by a quick-release connector 15. Typically, the quick-release connector 15 is fixed to the first connecting pipe. In this embodiment, the first and second connecting pipes are arranged horizontally and perpendicular to the nylon tube 10.

[0037] When the second connecting pipe is inserted into quick-connector 15, a self-locking mechanism prevents failure and ensures a secure connection. High-pressure gas cylinder 17 is used only when forced oxygen is required for the central material of woven bag 1. During routine operation, high-pressure gas cylinder 17 and the second connecting pipe are removed, and the open end of quick-connector 15 is connected to the atmosphere. Normal-pressure air naturally permeates the material layer due to the oxygen concentration difference caused by microbial metabolism to provide oxygen.

[0038] An annular rubber plate 12 is provided on the side wall of the woven bag 1, and the first connecting pipe is provided in the annular rubber plate 12. The inner ring of the annular rubber plate 12 is sleeved on the first connecting pipe, and the outer ring is sewn to the outer wall of the woven bag 1 with nylon thread to play a sealing role.

[0039] A pressure gauge 20 is installed on the upper portion of the high-pressure gas cylinder 17 to indicate changes in the internal pressure of the high-pressure gas cylinder 17 during filling and deflation.

[0040] The joint 11 has air holes on its circumference at half the height. The compressed air in the gas cylinder or the natural air outside the fermentation bag passes through the air holes to supplement oxygen for the growth and metabolism of microorganisms at different heights in the middle of the woven bag 1.

[0041] The specific operation process of the utility model of a courtyard organic household garbage fermentation bag is as follows:

[0042] 1. Place organic wet garbage from residents' kitchens and dry garbage such as waste paper, weeds, and dead leaves in layers in a fermentation bag, with dry garbage at the bottom. The height of each layer of dry and wet garbage is about 200mm. The average moisture content of the materials is controlled at 50%-60%. When the moisture content is too high, open the U-shaped zipper group 14 at the bottom to discharge it;

[0043] 2. The first start-up of the fermentation bag should be carried out at an ambient temperature above 20°C. The fermentation bag should be loaded gradually and the loading should be stopped when the top of the material is about 200mm away from the top cover. When white mycelium is observed on the surface of the fermentation material, it indicates that the fermentation bag has been successfully started.

[0044] 3. When the fermentation bag is operating normally, the arc-shaped zipper group 5 on the top and the U-shaped hole zipper group 14 on the bottom of the side wall are both in a closed state. They are only opened when adding and discharging materials. The discharge frequency and the amount of each discharge can be adjusted according to the amount of household organic waste generated;

[0045] 4. When the fermentation bag is operating normally, the material discharged from the bottom should be dark brown and have almost no odor. If the material discharge from the center bottom of the fermentation bag is abnormal, use the high-pressure gas cylinder 17 to force oxygen supply to the center material and use the instantaneous release of compressed air to increase the pores between the materials. If the material discharge around the bottom of the fermentation bag is abnormal, open the spiral zipper group 2 on the side wall to enhance the oxygen supply.

[0046] 5. The high-pressure gas cylinder 17 should be used intermittently when the discharge is abnormal. In general, the empty cylinder should be stored separately. The high-pressure gas cylinder 17 should be manually inflated with an air pump before use.

[0047] 6. The fermentation bag should be used at an ambient temperature above 0°C. When the ambient temperature is below 0°C, it should be covered with insulation material.

[0048] In other embodiments of the present invention, the steel ring 8 and the steel wire mesh 3 can be replaced with other materials, such as hard plastic, or brackets of other shapes can be used. For example, a hard bracket with the same shape as the woven bag after it is expanded can be used to support the woven bag 1, as long as the woven bag 1 can be expanded into a cylindrical shape.

[0049] In other embodiments of the present invention, the shape of the discharge port at the bottom may be circular, triangular or other shapes, and the shape of the air inlet on the side wall may also be a plurality of vertically evenly distributed circular rings.

[0050] In other embodiments of the present invention, the top cover 6 can be provided separately from the woven bag 1. When the top opening of the woven bag 1 is closed, the top cover 6 is covered on the top opening, so the arc-shaped zipper assembly 5 on the top can be eliminated.

[0051] In other embodiments of the present invention, the zipper in the above embodiment can be replaced by Velcro, which is adhered to corresponding positions to close the openings on the top and side walls of the woven bag.

[0052] In other embodiments of the present invention, four nylon tubes 10 can be combined into a long nylon tube. The top of the combined long nylon tube is sealed, and the bottom is fixed to the bottom of the woven bag 1 via a flange 13. The long nylon tube has multiple ventilation holes distributed in the circumferential and vertical directions to form a central ventilation duct. The side wall openings of the central ventilation duct are connected to the outside of the woven bag via a connecting duct. The nylon tube can also be replaced with a pipe made of other materials.

[0053] The above is only a preferred embodiment of the present invention. Any simple modification, equivalent change and modification made to the above embodiment by any technician familiar with the profession based on the technical essence of the present invention without departing from the scope of the technical solution of the present invention shall still fall within the scope of the technical solution of the present invention.

Claims

1. A courtyard organic household waste fermentation bag, comprising a woven bag (1), characterized in that: The woven bag (1) is provided with a bracket for holding the woven bag (1) open, the top opening of the woven bag (1) is provided with a top cover (6), the bottom of the side wall is provided with a discharge port that can be opened and closed, and the side wall air inlets that can be opened and closed are evenly distributed on the side wall; a middle ventilation pipe is vertically provided in the woven bag (1) and is connected to the outside of the woven bag (1) through a first connecting pipe, and a plurality of ventilation holes are evenly distributed on the middle ventilation pipe; the first connecting pipe is passed through the side wall of the woven bag (1), the inner end of the first connecting pipe is connected to the middle ventilation pipe, and the outer end is detachably connected to the outlet of the high-pressure gas cylinder (17), and the outlet of the high-pressure gas cylinder (17) is provided with a quick-opening air valve (16).

2. A garden organic household waste fermentation bag according to claim 1, characterized in that: A steel ring (8) is respectively wrapped and fixed at the bottom and top openings of the woven bag (1), and a cylindrical steel wire mesh (3) is arranged inside the woven bag (1).

3. A garden organic household waste fermentation bag according to claim 2, characterized in that: A layer of nylon mesh (4) is provided between the steel mesh (3) and the inner wall of the woven bag (1).

4. A garden organic household waste fermentation bag according to claim 1, characterized in that: A section of the arc of the top cover (6) is fixedly connected to the top opening of the woven bag (1), and the remaining arcs are detachably connected to the top opening of the woven bag (1) via an arc-shaped zipper assembly (5).

5. The garden organic household waste fermentation bag according to claim 1, characterized in that: The top cover (6) is vertically mounted with a normally open rubber tube (7), which passes through the top cover (6).

6. The garden organic household waste fermentation bag according to claim 1, characterized in that: The side wall air inlet is in the shape of a spiral line that is evenly arranged and extends from the bottom to the top, and a plurality of spiral zipper groups (2) are installed along the side wall air inlet.

7. The garden organic household waste fermentation bag according to claim 1, characterized in that: An inverted U-shaped opening is provided at the bottom of the side wall of the woven bag (1), and an inverted U-shaped zipper assembly (14) is provided on the inverted U-shaped opening.

8. The garden organic household waste fermentation bag according to claim 1, characterized in that: A plurality of nylon tubes (10) connected in sequence are vertically arranged in the middle of the woven bag (1), and two adjacent nylon tubes (10) are connected by a joint (11). The top end of the top nylon tube (10) is connected to a nylon plug (9) through the joint (11), and the side wall opening of one nylon tube (10) is detachably connected to the outlet of the high-pressure gas cylinder (17) through a first connecting pipe. The bottom end of the bottom nylon tube (10) is provided with a flange (13), and the flange (13) is fixedly connected to the bottom of the woven bag (1), and a plurality of air holes are distributed circumferentially on the joint (11).

9. The garden organic household waste fermentation bag according to claim 1, characterized in that: The inlet of the high-pressure gas cylinder (17) is equipped with an on-off valve (18), the other end of which is connected to a gas nozzle (19) via a pipeline, the other end of the quick-release gas valve (16) is connected to a second connecting pipeline, a quick-connect joint (15) is provided at the outer end of the first connecting pipeline, the first connecting pipeline is detachably connected to the second connecting pipeline via the quick-connect joint (15), and the high-pressure gas cylinder (17) is equipped with a pressure gauge (20).

10. The garden organic household waste fermentation bag according to claim 1, characterized in that: An annular rubber plate (12) is provided on the side wall of the woven bag (1), and a first connecting pipe is provided in the annular rubber plate (12).

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