Microporous membrane device for windrow composting

Abstract

The utility model relates to a microporous membrane device for windrow composting, a lower ventilation pipe of a ventilation assembly comprises an inserting pipe part and an expanding pipe part, the inserting pipe part is inserted at the lower end of an upper ventilation pipe and is fixed through a bolt, the ventilation assembly is arranged in a composting box body, and an air cap is arranged at the upper end of the upper ventilation pipe of the ventilation assembly. An electric air valve is arranged in the upper end of the upper ventilation pipe, ventilation holes are formed in the part, located in the composting box body, of the upper ventilation pipe and the lower ventilation pipe, an upper end covering film is arranged at the upper end of the composting box body, a covering film inserting hole is formed in the upper end covering film, a door opening assembly is arranged on one side of the composting box body, and a door opening covering film is arranged on the outer side of the door opening assembly; fixed covering films are arranged on the other sides of the composting box body, and the upper end covering film, the door opening covering film and the fixed covering films enclose the interior of the composting box body to form a sealed space. The environment-friendly and odor-isolating heat-preserving quilt has the functions of high air permeability, environment friendliness, odor isolation, heat preservation and the like, is low in energy consumption, and is particularly suitable for rural retail households.

Description

Technical Field

[0001] The utility model relates to the technical field of agricultural organic waste treatment, in particular to a microporous membrane device used for windrow composting. Background Art

[0002] There are many treatment processes for agricultural organic waste such as livestock and poultry manure and straw, among which composting is a commonly used process. However, the equipment and devices using this process in the prior art are mostly centralized treatment methods, that is, many individual households in rural areas need to transport waste such as manure and straw to designated locations, and then carry out centralized treatment, which will incur certain transportation costs, thereby increasing the burden on individual rural households. In addition, this method also has problems such as high infrastructure costs and low investment return ratio, which greatly limits the efficiency of recycling and conversion of organic waste in some rural area ecosystems, especially in rural areas where individual households are relatively scattered. Therefore, if a miniaturized device that individual households can use to directly carry out composting can be developed, it will undoubtedly solve the above problems.

[0003] In addition, in the prior art, a semi-permeable flexible composite membrane (functional membrane) can be used to cover the compost pile during the high-temperature composting process of organic materials to exert waterproof and breathable functions, while controlling the material and energy exchange between the material pile and the surrounding environment. Without affecting the ventilation and aeration of the windrow and the removal of moisture, it can also prevent the influence of rainwater on the composting process, and make the concentration of pollutants such as odor and aerosols emitted from the material pile lower than the prescribed limit, thereby alleviating the impact of the odor on the surrounding environment of the pile. However, the current membrane covering system is mainly aimed at centralized treatment methods, which requires corresponding infrastructure costs.

[0004] For example, a Chinese utility model patent with authorization announcement number CN219385033U discloses a film covering device for composting, which includes a film covering bracket, a lifting motor, a bracket fixing ring and other structures, wherein the film covering bracket is provided with three layers of film, including an outer waterproof film, a middle insulation film and an inner moisture-retaining film, but the device is still a traditional centralized processing method, which occupies a large area. When the device is used, after the compost pile is built, it is necessary to use a lifting motor to put the film covering bracket with three layers of film on the ground and completely cover the compost pile.

[0005] Another example is a Chinese utility model patent with authorization announcement number CN207933302U that discloses a non-powered ventilation and ammonia reduction windrow composting device. The innovation of this device lies in that it utilizes the suction effect of the wind hood to draw the air inside the compost to the outside, and the external air is exchanged into the compost, thereby achieving ventilation and oxygen supply inside the compost. The wind hood utilizes the natural wind speed in nature to drive the turbine rotation of the fan and the indoor and outdoor air convection, without the need for additional power, thus saving energy.

[0006] The Chinese utility model patent with authorization announcement number CN214457684U discloses a film-covered strip-type odorless composting device, which is also a centralized treatment method. It includes an aeration fan, an odor induced draft fan, a biological deodorization tank and other structures to treat the odor generated by a large amount of compost. In addition, the device is also provided with a composite molecular membrane cover that can be opened by an electric rope winder. After the composite molecular membrane cover is opened, the organic waste can be transferred. Utility Model Content

[0007] The utility model aims to provide a microporous membrane device for windrow composting, in which the covering membrane around the composting box body of the device adopts a polymer multi-microporous membrane, which has the functions of strong air permeability, environmental protection and odor isolation, and can also play a heat preservation effect to ensure the smooth progress of high-temperature aerobic composting, and the wind hood of the ventilation component can realize unpowered ventilation and oxygen supply, which reduces energy consumption, and the ventilation component can cooperate to adjust the height of the lower ventilation pipe according to the amount of material input, which is particularly suitable for use by individual households in rural areas.

[0008] The purpose of this utility model is achieved through the following technical solutions:

[0009] A microporous membrane device for composting in strips, comprising a composting box and a ventilation assembly, wherein the ventilation assembly comprises an upper ventilation pipe and a lower ventilation pipe, and the lower ventilation pipe comprises an upper plug-in pipe portion and a lower expanded diameter pipe portion, the plug-in pipe portion is plugged into the lower end of the upper ventilation pipe and fixed by a latch, the ventilation assembly is arranged in the composting box, and the upper end of the upper ventilation pipe of the ventilation assembly is located outside the upper end of the composting box and is provided with a wind cap, an electric air valve is arranged inside the upper end of the upper ventilation pipe, ventilation holes are arranged on the part of the upper ventilation pipe located in the composting box and the lower ventilation pipe, in addition, an upper end covering film is arranged at the upper end of the composting box, and a covering film plugging hole for the upper ventilation pipe to pass through is arranged on the upper end covering film, a door opening assembly is arranged on one side of the composting box, and a door opening covering film is arranged on the outer side of the door opening assembly, fixed covering films are arranged on the remaining sides of the composting box, and the upper end covering film, the door opening covering film and the fixed covering films enclose a sealed space.

[0010] The upper ventilation pipe is provided with a first ventilation hole, and the plug-in tube portion and the expanded diameter tube portion of the lower ventilation pipe are both provided with a second ventilation hole, and the latch passes through the corresponding first ventilation hole on the upper ventilation pipe and the corresponding second ventilation hole on the plug-in tube portion in sequence.

[0011] The composting box includes a box frame, and each fixed covering film is fixed to the corresponding side of the box frame, a support plate is provided in the middle of the upper end of the box frame, and a support plate plug hole is provided in the middle of the support plate, the upper end covering film is fixed to the upper end of the box frame, and the position of the covering film plug hole corresponds to the position of the support plate plug hole, a sealing disk is provided on the outer side of the upper end of the upper ventilation pipe, and the sealing disk is fixedly connected to the support plate by bolts and covers the covering film plug hole.

[0012] The door opening assembly comprises a door opening frame, and one side of the door opening frame is hinged to one side of the box frame through a hinge shaft, and the other side is fixedly connected to the other side of the box frame through a locking bolt, and a door opening covering film is fixedly arranged on the outer side of the door opening frame.

[0013] The box frame is provided with an embedding groove on one side of the door opening assembly, and the door opening frame includes an embedding protrusion and an outer flange. When the door opening assembly is closed, the embedding protrusion is embedded in the embedding groove, and the outer flange covers the outer surface of the corresponding side of the box frame. The locking bolt is arranged on the outer flange on the corresponding side of the door opening frame and is threadedly inserted into the box frame.

[0014] A temperature sensor, a humidity sensor and an oxygen concentration sensor are arranged inside the compost box, and a control box and a solar panel are arranged outside the compost box, wherein a power conversion module, a battery and a control module are arranged inside the control box, and one side of the power conversion module is connected to the solar panel through a line, and the other side of the power conversion module is connected to the battery through a line, and the battery is connected to the control module through a line, and the temperature sensor, the humidity sensor, the oxygen concentration sensor and the electric air valve are respectively connected to the control module through corresponding lines.

[0015] The upper end covering film, the door opening covering film and the fixed covering film are all polymer microporous films.

[0016] The advantages and positive effects of the utility model are:

[0017] 1. An upper covering film is provided at the upper end of the compost box of the utility model, a door opening assembly is provided on one side of the compost box, and a door opening covering film is provided on the outer side of the door opening assembly, and fixed covering films are provided on the other sides of the compost box. The upper covering film, the door opening covering film and the fixed covering film enclose the interior of the compost box into a sealed space, and each covering film adopts a polymer multi-microporous film, which has the functions of strong air permeability, environmental protection and odor isolation, and can also play a heat preservation effect to ensure the smooth progress of high-temperature aerobic composting.

[0018] 2. The hood of the ventilation assembly of the utility model can realize unpowered ventilation and oxygen supply, which reduces energy consumption, and the ventilation assembly can adjust the height of the lower ventilation pipe according to the amount of input materials, which is particularly suitable for use by individual households in rural areas.

[0019] 3. The utility model is provided with a power supply detection component to further reduce energy consumption and to detect the internal conditions of the composting box in real time, wherein the power supply detection component is powered by a solar panel, and the temperature sensor, humidity sensor, and oxygen concentration sensor in the power supply detection component are all arranged in the composting box to monitor the temperature, humidity, oxygen concentration and other parameters inside the box in real time.

[0020] 4. A door opening assembly is provided on one side of the composting box of the utility model, which is convenient for individual rural households to put materials into or remove materials from the box. At the same time, the door opening frame of the door opening assembly includes an embedded protrusion and an outer flange. When the door opening assembly is closed, the embedded protrusion is embedded in the embedded groove on the corresponding side of the box frame, and the outer flange covers the outer surface of the corresponding side of the box frame, thereby ensuring the internal sealing of the box. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of the utility model.

[0022] Figure 2 for Figure 1 Schematic diagram of the structure of the central ventilation component.

[0023] Figure 3 for Figure 1 Schematic diagram of the decomposition of the compost bin.

[0024] Figure 4 for Figure 3 Cross-sectional view of the center door assembly.

[0025] Among them, 1 is a compost box, 101 is a box frame, 1011 is an embedded groove, 102 is a fixed covering film, 103 is a support plate, 1031 is a support plate socket, 104 is an upper covering film, 1041 is a covering film socket, 105 is a door opening component, 1051 is a door opening frame, 10511 is an embedded protrusion, 10512 is an outer flange, 1052 is a door opening covering film, 106 is a locking bolt, 107 is a hinge shaft, 2 is a ventilation component, and 201 is a hood , 202 is a sealing disk, 203 is an electric air valve, 204 is an upper ventilation pipe, 2041 is a first ventilation hole, 205 is a lower ventilation pipe, 2051 is a plug-in tube portion, 2052 is an enlarged diameter tube portion, 2053 is a plug pin, 2054 is a second ventilation hole, 206 is a plug, 3 is a power supply detection component, 301 is a temperature sensor, 302 is a humidity sensor, 303 is an oxygen concentration sensor, 304 is a control box, 305 is a solar panel, and 306 is a fixing rod. DETAILED DESCRIPTION

[0026] The utility model is further described in detail below in conjunction with the accompanying drawings.

[0027] like Figures 1 to 4 As shown, the utility model comprises a compost box 1 and a ventilation assembly 2, wherein Figures 1-2 As shown, the ventilation assembly 2 includes an upper ventilation pipe 204 and a lower ventilation pipe 205, and the lower ventilation pipe 205 includes an upper plug-in pipe portion 2051 and a lower expanded diameter pipe portion 2052, wherein the plug-in pipe portion 2051 is plugged into the lower end of the upper ventilation pipe 204 and fixed by a latch 206, and the expanded diameter pipe portion 2052 is trumpet-shaped and has a pin 2053 on the lower side, the ventilation assembly 2 is arranged in the composting box 1, and the upper end of the upper ventilation pipe 204 of the ventilation assembly 2 is located outside the upper end of the composting box 1 and is provided with a hood 201, and an electric air valve 203 is provided inside the upper end of the upper ventilation pipe 204 for controlling the ventilation on and off, the electric air valve 203 is a well-known technology in the art and is a commercially available product, in this embodiment, the electric air valve 203 can be purchased from Zhejiang Aoxiang Automatic Control Technology Co., Ltd., and ventilation holes are provided on the portion of the upper ventilation pipe 204 located in the composting box 1 and the lower ventilation pipe 205. In addition, Figure 3 As shown, an upper covering film 104 is provided at the upper end of the composting box 1, and a covering film insertion hole 1041 for the upper ventilation pipe 204 of the ventilation component 2 to pass through is provided on the upper covering film 104, a door opening component 105 is provided on one side of the composting box 1, and a door opening covering film 1052 is provided on the outer side of the door opening component 105, and fixed covering films 102 are provided on the remaining sides of the composting box 1, and the upper covering film 104, the door opening covering film 1052 and each fixed covering film 102 enclose the interior of the composting box 1 into a sealed space. In this embodiment, the upper covering film 104, the door covering film 1052 and the fixed covering film 102 are made of fluoropolymer (such as ePTFE, polytetrafluoroethylene) as raw materials, and are expanded and stretched to form a polymer microporous membrane, the surface of which is covered with fibril-like micropores with a pore size between 0.1 and 0.5 microns. On the one hand, the pore size is between the diameters of water vapor and rainwater (the diameter of water vapor molecules is 0.0004 microns, and the diameter of the smallest light mist in rainwater is 20 microns), which can pass small molecular gases such as water vapor and carbon dioxide, and has strong air permeability. On the other hand, it can also prevent large molecular odors from passing through, and effectively physically isolate impurities such as dust, aerosols and microorganisms, thereby playing an environmentally friendly odor isolation function, and at the same time can also play a heat preservation effect to ensure the smooth progress of high-temperature aerobic composting.

[0028] like Figures 1 to 4As shown, when the utility model is used, the operator opens the door assembly 105 on one side of the composting box 1 to feed organic waste materials into the box or transfer the materials in the box out, and the hood 201 of the ventilation assembly 2 can realize unpowered ventilation and oxygen supply, which reduces the energy consumption of the entire device and is particularly suitable for use by individual rural households. The hood 201 is a well-known technology in the art, such as the hood structure in the CN207933302U patent. In addition, the utility model takes into account that the amount of organic waste such as livestock and poultry manure and straw fed by individual rural households each time is uncertain, so the ventilation assembly 2 is designed as a structure combining an upper ventilation pipe 204 and a lower ventilation pipe 205, wherein the pin 2053 at the lower end of the lower ventilation pipe 205 can be inserted into the compost to achieve auxiliary fixation, and the plug-in pipe portion 2051 at the upper part of the lower ventilation pipe 205 is plug-in-matched with the lower end of the upper ventilation pipe 204, so that the height of the lower ventilation pipe 205 can be adjusted according to the actual compost height inside the box, specifically: Figure 2 As shown, the plug-in tube portion 2051 on the upper side of the lower ventilation pipe 205 is inserted into the upper ventilation pipe 204 and fixed by a latch 206, wherein the upper ventilation pipe 204 is provided with a first ventilation hole 2041, and the plug-in tube portion 2051 and the expanded diameter tube portion 2052 of the lower ventilation pipe 205 are both provided with a second ventilation hole 2054, and the latch 206 passes through the corresponding first ventilation hole 2041 on the upper ventilation pipe 204 and the corresponding second ventilation hole 2054 on the plug-in tube portion 2051 in sequence. When adjusting the height of the lower ventilation pipe 205, the operator first pulls out the latch 206, and the lower ventilation pipe 205 can be freely raised and lowered to adjust the height. After the height of the lower ventilation pipe 205 is determined, the operator reinserts the latch 206 into the corresponding first ventilation hole 2041 on the upper ventilation pipe 204 and the corresponding second ventilation hole 2054 on the plug tube part 2051 to fix the lower ventilation pipe 205. When the utility model is used, for example, when the amount of materials fed in is small, the lower ventilation pipe 205 can be lowered to ensure ventilation and oxygen supply for the compost.

[0029] like Figure 3 As shown, in this embodiment, the compost box 1 includes a box frame 101, and each fixed covering film 102 is fixed to the corresponding side of the box frame 101 ( Figure 3 , the front, rear, bottom and left sides of the box frame 101 are shown in the figure. A support plate 103 is provided in the middle of the upper end of the box frame 101, and a support plate plug hole 1031 is provided in the middle of the support plate 103. The upper end covering film 104 is fixed to the upper end of the box frame 101, and the position of the covering film plug hole 1041 corresponds to the position of the supporting plate plug hole 1031. The covering film plug hole 1041 and the supporting plate plug hole 1031 are both for the upper ventilation pipe 204 of the ventilation assembly 2 to pass through, as shown in FIG. Figure 2 As shown, a sealing disk 202 is provided on the outer side of the upper end of the upper ventilation pipe 204, and as shown in FIG. Figure 1 As shown, the sealing disk 202 covers the covering film insertion hole 1041, and the sealing disk 202 can be fixedly connected to the support plate 103 by bolts, thereby achieving the purpose of compressing and sealing to block the covering film insertion hole 1041, thereby ensuring the sealing inside the box body. After the connecting bolts of the sealing disk 202 and the support plate 103 are removed, the upper ventilation pipe 204 of the ventilation assembly 2 can be directly drawn out from the upper end of the box body for corresponding maintenance and repair operations. For example, when the electric air valve 203 fails, it can be opened first. Open the door assembly 105 to unplug the connection line corresponding to the electric air valve 203, and then completely pull out the upper ventilation duct 204 from the upper end of the box to repair and replace the electric air valve 203. In addition, the utility model can also set the adsorption structure 5 in the CN207933302U patent in the upper ventilation duct 204 according to actual needs. At this time, the same operation can be performed, that is, first unplug the connection line of the electric air valve 203, and then completely pull out the upper ventilation duct 204 from the upper end of the box to replace the adsorption structure 5.

[0030] like Figures 3-4 As shown, in this embodiment, the door opening assembly 105 includes a door opening frame 1051, and one side of the door opening frame 1051 is hinged to one side of the box frame 101 through a hinge shaft 107, and the other side is fixedly connected to the other side of the box frame 101 through a locking bolt 106 to achieve internal sealing of the box, and a door opening covering film 1052 is fixedly provided on the outer side of the door opening frame 1051.

[0031] like Figure 4 As shown, in this embodiment, the box frame 101 is provided with a mounting groove 1011 on one side of the door opening component 105, and the door opening frame 1051 includes a mounting protrusion 10511 and an outer flange 10512, wherein when the door opening component 105 is closed, the mounting protrusion 10511 is embedded in the mounting groove 1011, and the outer flange 10512 covers the outer surface of the corresponding side of the box frame 101, thereby ensuring the sealing of the box body, and a sealing member can be provided between the outer flange 10512 and the outer surface of the box frame 101 as needed. The locking bolt 106 is arranged on the outer flange 10512 on the corresponding side of the door frame 1051 to realize the closing and locking of the door frame 1051 and the box frame 101, that is, to realize the closing and locking of the door assembly 105. The box frame 101 is provided with a threaded hole for inserting the locking bolt 106. When opening the door, the operator first screws the locking bolt 106 outward to disengage it from the box frame 101, and then opens the door frame 105. A handle can be set at a suitable position on the door frame 105 to facilitate opening. Figure 4As shown, a door opening covering film 1052 is provided on the side of the door opening frame 1051 away from the box frame 101 .

[0032] like Figure 1 As shown, considering that the utility model is mainly used by individual rural households, in order to further reduce energy consumption and be able to detect the internal situation of the compost box 1 in real time, a power supply detection component 3 can be provided in one embodiment of the utility model. In this embodiment, the power supply detection component 3 includes a temperature sensor 301, a humidity sensor 302, an oxygen concentration sensor 303, a control box 304 and a solar panel 305, wherein the control box 304 and the solar panel 305 are arranged on a fixed rod 306, and a power conversion module, a battery and a control module are arranged in the control box 304, wherein one side of the power conversion module is connected to the solar panel 305 through a line and converts the energy collected by the solar panel 305 into electrical energy for use by the control module and various sensors. The other side of the block is connected to the battery through a line, and the battery is connected to the control module through a line. The temperature sensor 301, the humidity sensor 302, and the oxygen concentration sensor 303 are all arranged in the compost box 1 to monitor the temperature, humidity, oxygen concentration and other parameters inside the box in real time, and the temperature sensor 301, the humidity sensor 302, the oxygen concentration sensor 303 and the electric air valve 203 are respectively connected to the control module in the control box 304 through corresponding lines, wherein the electric air valve 203 is controlled to be opened or closed by the control box 304, and in addition to realizing ventilation and oxygen supply, it can also be controlled to be opened by the control box 304 according to the real-time monitoring situation inside the box to play a role in adjusting the temperature, oxygen concentration and the like. An operation panel can be set on the outer wall of the control box 304 as needed, and the operator can observe the internal parameters of the box in real time through the operation panel, or control the start and stop of the electric air valve 203. The solar panel 305, the power conversion module and the control module are all well-known technologies in the art, for example, the solar panel structure in the CN105119553B patent can be adopted. The temperature sensor 301 , humidity sensor 302 , and oxygen concentration sensor 303 are all well-known technologies in the art and are commercially available products.

[0033] The box frame 1 and the door frame 1051 can be provided with a suitable number of cross-support beams according to actual needs to ensure that the covering film is tightly supported and fixed, for example, the supporting plate structure of the composite molecular film cover plate in patent CN214457684U can be adopted. The covering film can also adopt the membrane structure in patent CN219385033U or CN214457684U as needed.

[0034] The volume of the composting box 1 can be designed according to the specific actual needs of individual rural households.

[0035] The working principle of the utility model is:

[0036] The utility model is developed based on the principle of static windrow composting technology. When the utility model is used, the operator opens the door assembly 105 on one side of the composting box 1 to feed organic waste materials into the box, and then closes the door assembly 105 to seal the inside of the composting box 1 to start composting. In the composting process, the hood 201 of the ventilation assembly 2 can realize unpowered ventilation and oxygen supply, and the covering films around the box (including the upper covering film 104, the door covering film 1052 and the fixed covering film 102) are all made of fluoropolymer (such as ePTFE, polytetrafluoroethylene) The material is expanded and stretched to form a polymer microporous membrane, and its surface is covered with fibrillar micropores with a pore size of 0.1 to 0.5 microns. On the one hand, the pore size is between the diameter of water vapor and rainwater (the diameter of water vapor molecules is 0.0004 microns, and the diameter of the smallest mist in rainwater is 20 microns). It can pass small molecular gases such as water vapor and carbon dioxide, and has strong air permeability. On the other hand, it can also prevent the passage of large molecular odors, and effectively physically isolate impurities such as dust, aerosols and microorganisms, thereby playing an environmental protection and odor isolation function. At the same time, it can also play a heat preservation effect to ensure that high-temperature aerobic composting proceeds smoothly. In order to further reduce energy consumption and be able to detect the internal situation of the composting box 1 in real time, the utility model can be provided with a power supply detection component 3, wherein the power supply detection component 3 is powered by solar energy, and the temperature sensor 301, humidity sensor 302, and oxygen concentration sensor 303 in the power supply detection component 3 are all arranged in the composting box 1 to monitor the temperature, humidity, oxygen concentration and other parameters inside the box in real time.

[0037] In addition, Figure 2 As shown, the utility model takes into account that the amount of organic waste such as livestock and poultry manure and straw sent in by individual rural households each time is uncertain, so the lower ventilation pipe 205 in the ventilation assembly 2 is designed to be adjustable. When adjusting the height of the lower ventilation pipe 205, the operator first pulls out the latch 206, and the lower ventilation pipe 205 can be freely raised and lowered to adjust the height. After the height of the lower ventilation pipe 205 is determined, the operator reinserts the latch 206 into the corresponding first ventilation hole 2041 on the upper ventilation pipe 204 and the corresponding second ventilation hole 2054 on the plug pipe part 2051 to fix the lower ventilation pipe 205. When the utility model is used, for example, when the amount of material sent in is small, the lower ventilation pipe 205 can be lowered to ensure ventilation and oxygen supply for the compost.

Claims

1. A microporous membrane device for windrow composting, characterized in that: The invention comprises a composting box (1) and a ventilation assembly (2), wherein the ventilation assembly (2) comprises an upper ventilation pipe (204) and a lower ventilation pipe (205), and the lower ventilation pipe (205) comprises an upper plug-in pipe portion (2051) and a lower expanded diameter pipe portion (2052), the plug-in pipe portion (2051) being plugged into the lower end of the upper ventilation pipe (204) and fixed by a latch (206), the ventilation assembly (2) being arranged in the composting box (1), and the upper end of the upper ventilation pipe (204) of the ventilation assembly (2) being located outside the upper end of the composting box (1) and being provided with a hood (201), an electric air valve (203) being provided inside the upper end of the upper ventilation pipe (204), and the upper end of the upper ventilation pipe (204) being provided with a hood (201). The portion of the air duct (204) located in the compost box (1) and the lower ventilation duct (205) are both provided with ventilation holes. In addition, an upper covering film (104) is provided at the upper end of the compost box (1), and a covering film insertion hole (1041) for the upper ventilation duct (204) to pass through is provided on the upper covering film (104). A door opening component (105) is provided on one side of the compost box (1), and a door opening covering film (1052) is provided on the outer side of the door opening component (105). Fixed covering films (102) are provided on the remaining sides of the compost box (1), and the upper covering film (104), the door opening covering film (1052) and the fixed covering films (102) enclose a sealed space.

2. The microporous membrane device for windrow composting according to claim 1, characterized in that: The upper ventilation pipe (204) is provided with a first ventilation hole (2041), the plug-in tube portion (2051) and the expanded diameter tube portion (2052) of the lower ventilation pipe (205) are both provided with a second ventilation hole (2054), and the latch (206) sequentially passes through the corresponding first ventilation hole (2041) on the upper ventilation pipe (204) and the corresponding second ventilation hole (2054) on the plug-in tube portion (2051).

3. The microporous membrane device for windrow composting according to claim 1, characterized in that: The composting box (1) comprises a box frame (101), and each fixed covering film (102) is fixed to a corresponding side of the box frame (101), a support plate (103) is provided in the middle of the upper end of the box frame (101), and a support plate plug hole (1031) is provided in the middle of the support plate (103), the upper covering film (104) is fixed to the upper end of the box frame (101), and the position of the covering film plug hole (1041) corresponds to the position of the support plate plug hole (1031), and a sealing disk (202) is provided on the outer side of the upper end of the upper ventilation pipe (204), and the sealing disk (202) is fixedly connected to the support plate (103) by bolts and covers the covering film plug hole (1041).

4. The microporous membrane device for windrow composting according to claim 3, characterized in that: The door opening assembly (105) comprises a door opening frame (1051), one side of the door opening frame (1051) is hinged to one side of the box frame (101) via a hinge shaft (107), and the other side is fixedly connected to the other side of the box frame (101) via a locking bolt (106), and a door opening covering film (1052) is fixedly provided on the outer side of the door opening frame (1051).

5. The microporous membrane device for windrow composting according to claim 4, characterized in that: The box frame (101) is provided with an embedding groove (1011) on one side of the door opening component (105), and the door opening frame (1051) includes an embedding protrusion (10511) and an outer flange (10512). When the door opening component (105) is closed, the embedding protrusion (10511) is embedded in the embedding groove (1011), and at the same time, the outer flange (10512) covers the outer surface of the corresponding side of the box frame (101), and the locking bolt (106) is arranged on the outer flange (10512) on the corresponding side of the door opening frame (1051) and is threadedly inserted into the box frame.

6. The microporous membrane device for windrow composting according to claim 1, characterized in that: The compost box (1) is provided with a temperature sensor (301), a humidity sensor (302) and an oxygen concentration sensor (303) inside, and the compost box (1) is provided with a control box (304) and a solar panel (305) outside, wherein the control box (304) is provided with a power conversion module, a storage battery and a control module, and one side of the power conversion module is connected to the solar panel (305) through a line, and the other side of the power conversion module is connected to the storage battery through a line, and the storage battery is connected to the control module through a line, and the temperature sensor (301), the humidity sensor (302), the oxygen concentration sensor (303) and the electric air valve (203) are respectively connected to the control module through corresponding lines.

7. The microporous membrane device for windrow composting according to claim 1, characterized in that: The upper end covering film (104), the door opening covering film (1052) and the fixed covering film (102) are all polymer microporous films.

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