CN215855826U

CN215855826U - Film covering device for compost fermentation

Info

Publication number: CN215855826U
Application number: CN202121595971.7U
Authority: CN
Inventors: 蔡亮; 何文祥; 张波; 孔小雁; 吴俊达; 卢洋博; 何华; 何凤
Original assignee: Jingmen Famax Agricultural Technology Co ltd
Current assignee: Jingmen Famax Agricultural Technology Co ltd
Priority date: 2021-07-13
Filing date: 2021-07-13
Publication date: 2022-02-18
Anticipated expiration: 2031-07-13

Abstract

The application provides a tectorial membrane device for compost fermentation includes: a nanomembrane having filtration pores; the support body, the nanometer membrane cover in on the support body, form a fermentation space in the support body, the fermentation space is used for the material to build the heap, the material fermentation produces different gas molecules, is less than the gas molecule of filtration pore sees through the nanometer membrane, the fermentation space has the opening that supplies the material business turn over. The application provides a tectorial membrane device for compost fermentation because adopt the support body to support the unsettled back formation fermentation space of nanometer membrane, carry out the good oxygen compost fermentation of material, overcome current good oxygen compost and adopted conventional tectorial membrane mode to cause the nanometer membrane to lift the problem of covering difficulty, easy damage, and then reach the work load that reduces artifical business turn over or other operations lift the nanometer membrane, convenient operation uses manpower sparingly and time.

Description

Film covering device for compost fermentation

Technical Field

The application belongs to the technical field of fermentation processes, and particularly relates to a film covering device for compost fermentation.

Background

Aerobic composting fermentation is one of important ways to solve the problem of pollution of livestock and poultry manure and realize resource utilization of the livestock and poultry manure. At present, aerobic composting fermentation adopts a nano film to carry out composting fermentation, the nano film is directly covered after materials are piled up, follow-up operation needs to frequently lift the nano film, the nano film is heavier due to the heavier weight, the weight is heavier under the condition of rainwater, the labor force is very increased when frequently lifting the nano film, the nano film is easily damaged, and in extreme weather such as windy conditions, the nano film is easily stripped by adopting a conventional covering mode, and the edge pressing is easily dropped and the nano film is easily scraped and damaged.

SUMMERY OF THE UTILITY MODEL

The embodiment of the application provides a tectorial membrane device for compost fermentation to solve current aerobic compost fermentation and adopt conventional tectorial membrane mode to cause the problem that the nanometer membrane lifts the lid difficulty, easy damage.

In a first aspect, an embodiment of the present application provides a film covering device for compost fermentation, including:

a nanomembrane having filtration pores;

the support body, the nanometer membrane cover in on the support body, form a fermentation space in the support body, the fermentation space is used for the material to build the heap, the material fermentation produces different gas molecules, is less than the gas molecule of filtration pore sees through the nanometer membrane, the fermentation space has the opening that supplies the material business turn over.

Optionally, the shelf body comprises an arched top and a support part, and the arched top is mounted on the support part.

Optionally, the supporting part includes two retaining walls that set up relatively at an interval, the arch top is striden and is located on the retaining wall, the nanometer membrane cover in on the arch top, just the nanometer membrane with retaining wall sealing connection.

Optionally, the supporting portion includes two supporting frames disposed opposite to each other at an interval, and the nano-film covers the arched top and the supporting frames.

Optionally, the arch top is an arch steel frame, and the steel frame is mounted on the support portion.

Optionally, the frame body includes a plurality of arch bars, and is a plurality of arch bars arrange along preset direction interval, nanometer membrane cover in on the arch bar.

Optionally, the support body still includes the connecting rod, and the connecting rod extends along predetermineeing the direction, and is a plurality of arch-shaped rod install in on the connecting rod.

Optionally, a connecting fixing piece is arranged on the arch rod, and the connecting rod is mounted on the connecting fixing piece.

Optionally, a sealing structure is arranged at a joint of the frame body and the nano film, and the frame body and the nano film are hermetically connected through the sealing structure.

Optionally, the sealing structure includes a sealing portion and a sealing engagement portion, the sealing portion is disposed on the frame body, and the nano film is sealingly mounted on the sealing portion through the sealing engagement portion.

The tectorial membrane device for compost fermentation that this application embodiment provided, because adopt the support body to support the unsettled back formation fermentation space of nanometer membrane, carry out the aerobic composting fermentation of material, overcome current aerobic composting and adopted conventional tectorial membrane mode to cause the nanometer membrane to lift the problem of covering difficulty, easy damage, and then reach the work load that reduces artifical business turn over or other operations lift the nanometer membrane, convenient operation uses manpower sparingly and time.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that other drawings can be derived from these drawings by a person skilled in the art without inventive effort.

For a more complete understanding of the present application and its advantages, reference is now made to the following descriptions taken in conjunction with the accompanying drawings. Wherein like reference numerals refer to like parts in the following description.

Fig. 1 is a schematic structural diagram of a film covering device for composting fermentation in the form of a first support part and a retaining wall according to an embodiment of the present application.

Fig. 2 is a structural schematic diagram of a first form of a film covering device for compost fermentation provided by the embodiment of the application, in which a supporting portion is a supporting frame.

Fig. 3 is a schematic structural diagram of a second type of film covering device for compost fermentation applied to a fermentation tank according to an embodiment of the present application.

Fig. 4 is a schematic structural diagram of a fermentation tank in a first form according to an embodiment of the present invention.

Fig. 5 is a schematic structural diagram of a second mode of applying the film covering device for compost fermentation provided in the embodiment of the present application to a fermentation tank.

FIG. 6 is a structural schematic diagram of a fermentation tank in the form two provided in the embodiment of the present application.

Fig. 7 is a partial enlarged view of a portion a in fig. 3.

Fig. 8 is a schematic view of a sealing structure provided in an embodiment of the present application.

Fig. 9 is a partial enlarged view of fig. 6 at B.

Fig. 10 is a partially enlarged view at C in fig. 3.

FIG. 11 is a schematic structural diagram of a fermentation tank provided in the embodiments of the present application.

Detailed Description

The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. It is to be understood that the embodiments described are only a few embodiments of the present application and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

The embodiment of the application provides a tectorial membrane device for compost fermentation, and the problem that the conventional tectorial membrane mode of current aerobic compost fermentation causes that the nanometer membrane lifts to cover difficultly, easily damages. The following description will be made with reference to the accompanying drawings.

The laminating device for composting fermentation provided by the embodiment of the application can be applied to a composting fermentation system, exemplarily, the composting fermentation system comprises a control system and the laminating device for composting fermentation, and the composting fermentation system can be used for treating organic raw materials such as various livestock and poultry manure, crop straws, kitchen garbage, sludge waste, cake dregs, agricultural and forestry waste, agricultural product processing waste and the like.

In order to more clearly explain the structure of the film covering device for composting fermentation, the film covering device for composting fermentation will be described below with reference to the accompanying drawings.

Referring to fig. 1, 2 and 3, a film covering device for compost fermentation includes: the nano-membrane 31 and the frame body 30, the nano-membrane 31 has filtering holes, the nano-membrane 31 covers the frame body 30, a fermentation space is formed in the frame body 30, the fermentation space is used for material stacking, the material is fermented to generate different gas molecules, the gas molecules smaller than the aperture of the filtering holes penetrate through the nano-membrane 31, and the fermentation space is provided with an opening for the material to enter and exit. It can be understood that the nanometer film 31 is supported and suspended by the frame body 30, the nanometer film 31 is built with the material in the fermentation space without direct contact, when the material is built or the fermentation is operated midway, only the nanometer film 31 at the opening needs to be lifted, the problems that the nanometer film 31 is difficult to lift and damage is caused by the conventional film covering mode of the existing aerobic compost are overcome, the workload of lifting the nanometer film due to manual entering and exiting or other operations is reduced, the operation is convenient, the labor and the time are saved, in addition, the stability of the nanometer film 31 is good, and the multifunctional fermentation tank can adapt to various extreme weathers such as strong wind.

The first type of the compost fermentation film covering device is configured to be used alone as a fermentation site, and the second type of the compost fermentation film covering device is configured to be used by being attached to the fermentation tank 1, specifically as follows:

in some embodiments, referring to fig. 1 and 2, in the structure of the first form of the film covering device for composting fermentation, the frame body 30 includes an arched top 301 and a support 303, and the arched top 301 is mounted on the support 303. It can be understood that the height of the fermentation space is increased by adopting the arched top, the mechanical operation is convenient, the structural strength of the arched top 301 is high, the bearing capacity is strong, and the arched nano-film 31 is wind-resistant and uniform in rainstorm resistance.

Illustratively, referring to fig. 1, the supporting portion 303 includes two retaining walls 3030 disposed at an interval, the arched top 301 straddles the retaining walls 3030, the nano-film 31 covers the arched top 301, and the nano-film 31 is hermetically connected to the retaining walls 3030. Utilize the inboard space of arch top 301 and barricade 3030 inner space to form a fermentation space jointly, and the opening that barricade 3030 both ends formed supplies the material to pass in and out, cover nanometer membrane 31 at the opening part equally, only need lift the nanometer membrane 31 of lid opening part can, under this kind of structure, for material fermentation provides the place, cooperation ventilation system and control system can carry out material fermentation and use, simple structure, construction cost is low.

Illustratively, referring to fig. 2, the supporting portion 303 includes two supporting frames 3031 arranged at an interval, the nanomembrane 31 covers the arch-shaped top 301 and the supporting frames 3031, a space between the two supporting frames 3031 and an inner side of the arch-shaped top 301 form a fermentation space together, openings formed at two ends of the two supporting frames 3031 are used for material to enter and exit, the openings are also covered with the nanomembrane 31, and only the nanomembrane 31 at the openings needs to be lifted, so that the operation is convenient. Wherein, support frame 3031 includes the first bracing piece of two vertical settings and the second bracing piece of level setting, and the both ends of second bracing piece are connected with first bracing piece respectively, and the arch top is installed on the second bracing piece, and under this kind of structure, for material fermentation provides the place, and cooperation ventilation system and control system can carry out material fermentation and use, simple structure, and construction cost is low.

For example, referring to fig. 1 and 2, the arched top 301 is an arched steel frame, the steel frame is made of a plurality of arched frames, the arched steel frame is covered by the nano-film 31, the arched steel frame has high structural strength and strong bearing capacity, and the arched nano-film 31 is wind-resistant and uniform in rainstorm resistance.

In some embodiments, referring to fig. 3, in the structure of the second form of the film covering device for compost fermentation, the frame body 30 includes a plurality of arch bars 3000, the plurality of arch bars 3000 are arranged at intervals along a predetermined direction, the nanomembrane 31 covers the arch bars 3000, and both ends of the arch bars 3000 are fixedly spanned on the fermentation tank 1.

In some embodiments, the shelf body 30 further includes a connecting rod 302, the connecting rod 302 extends along a predetermined direction, the plurality of arch bars 3000 are mounted on the connecting rod 302, the connecting rod 302 connects all the arch bars 3000 in series to form an arch-shaped main frame, and the connecting rod 302 increases the structural strength of the shelf body 30.

In some embodiments, the arch bar 3000 is provided with a connecting fixing member 304, the connecting rods 302 are installed on the connecting fixing member 304, the connecting fixing member 304 is an installation ring, the installation ring is fixed on the inner side of the arch bar 3000, all the installation rings on the arch bar 3000 are located on the same straight line, the connecting rods 302 penetrate through the installation ring, so that the installation and the disassembly of the connecting rods 302 are facilitated, the outer side surface of the arch bar 3000 is smooth, the surface smoothness of the nano film 31 is ensured, and the local stress damage of the nano film 31 is avoided.

In some embodiments, the sealing structure 4 is disposed at the junction of the frame 30 and the nanomembrane 31, and the frame 30 and the nanomembrane 31 are hermetically connected by the sealing structure 4.

In some embodiments, the sealing structure 4 includes a sealing portion 40 and a sealing engagement portion 41, the sealing portion 40 is disposed on the frame 30, the sealing portion 40 is a sealing strip, the sealing strip is a square groove with a square cross section and an opening on one side, the sealing engagement portion 41 is a steel wire, the nano-film 31 is fixed in the square groove through the steel wire, the steel wire contacts with an inner wall of the square groove, the steel wire is screwed, the nano-film 31 is fixed while the nano-film 31 is ensured to be in sealing contact with the sealing portion 40, the sealing structure is simple, the installation cost is low, and the nano-film 31 is convenient to disassemble. It is understood that the sealing part 40 and the sealing engagement part 41 may have a snap structure, and the nanomembrane 31 is snapped between the sealing part 40 and the sealing engagement part 41.

It can be understood that the nano-film 31 is a selective gas-permeable film, micro-filtration pores with the pore diameter of 0.2-0.3 μm are uniformly distributed on the film, the filtration pores do not allow macromolecules to pass through, such as odorous gas molecules, bioaerosol and dust, water vapor and carbon dioxide gas molecules can pass through the nano-film 31, part of water vapor generated by high-temperature fermentation in the film forms a water film on the inner surface of the nano-film 31, the odorous gas molecules such as ammonia gas and hydrogen sulfide gas are easily dissolved in water, are absorbed and intercepted by the water film on the inner surface of the nano-film 31, and are decomposed by organic matters after falling down into compost along with the water film, thereby being beneficial to reducing odor emission and ammonia loss, improving the nitrogen content of organic fertilizers formed by compost fermentation. The nano-film 31 has the functions of water resistance, moisture permeability, bacteria isolation, deodorization and the like, the ventilation system conveys oxygen for the material fermentation in the tank body 10, the fermentation tank 1 and the nano-film 31 form a closed fermentation plant, oxygen supply is exchanged by the ventilation system by relying on a high-temperature fermentation linkage technology, the activity of microorganisms is controlled by multi-factor intelligent linkage, the simplicity and flexibility of open composting and the rapidness and environmental protection of closed composting are combined, the problem of diffusion of odor of livestock and poultry feces is solved, the volatilization of ammonia in the compost can be effectively controlled, the moisture content of the material can be rapidly reduced, and the composting period can be shortened. Can realize the high-efficiency, environment-friendly, safe, low-cost and harmless treatment and fertilizer utilization of the livestock and poultry manure and the organic waste.

The details of the application of the structure of the second type of the film covering device for compost fermentation to the fermentation tank 1 will be described below:

referring to fig. 3, a film covering device 3 of the present application is used in cooperation with a fermentation tank 1 to form a film covering compost fermentation device, the film covering compost fermentation device includes the fermentation tank 1, a ventilation system 2 and the film covering device 3, the fermentation tank 1 includes a tank body 10, the tank body 10 is provided with an inner cavity 11 for containing materials and an opening 12 for the materials to enter and exit, the opening 12 is communicated with the inner cavity 11, the ventilation system 2 includes a plurality of ventilation pipes 20 arranged at the bottom of the tank body 10, and the ventilation pipes 20 are communicated with the inner cavity 11; the film coating device 3 comprises a frame body 30 and a nanometer film 31, the frame body 30 is arranged on the tank body 10 in a spanning mode, the nanometer film 31 covers the frame body 30 and the opening 12, and the film coating device 3 and the fermentation tank 1 form a fermentation space for material stacking.

The nanometer film 31 is arranged on the frame body 30, the nanometer film 31 is in a suspended state, the workload of manually entering and exiting the material to uncover the nanometer film 31 is reduced, the nanometer film 31 is prevented from being damaged due to frequent uncovering of the nanometer film 31, the space between the groove body 10 and the nanometer film 31 is large enough, the nanometer film 31 does not need to be entirely uncovered, machine operation can be adopted, feeding and discharging are carried out from the side of the opening 12, the operation is convenient, and labor and time are saved.

It can be understood that the nanomembrane 31 and the tank 10 form a fermentation space which is communicated with the outside only through the nanomembrane 31 itself due to the material characteristics, and no other gap or structure is communicated with the outside.

It can be understood that the nanomembrane 31 only needs to cover the exposed space and the opening 12 of the tank body 10, so as to save materials and reduce cost. Of course, the nanomembrane 31 may cover other portions of the tank 10.

Illustratively, referring to fig. 3 and 5, the rack 30 includes an arched steel frame 300, the steel frame 300 straddles the top of the tank 10, and the steel frame 300 is disposed along the length direction of the tank 10. The nano-film 31 covers the arched steel frame 300, the arched steel frame 300 has high structural strength and strong bearing capacity, and the arched nano-film 31 is wind-resistant and uniform in rainstorm resistance.

Exemplarily, steelframe 300 includes a plurality of arch bars 3000, a plurality of arch bars 3000 are arranged along the length direction interval of cell body 10, the top of cell body 10 is for opening the structure, arch bar 3000 includes two vertical sections and an arc section, the arc section connects the one end of two vertical sections, the other end of vertical section sets up respectively on the cell body 10 lateral wall, steelframe 300 has the arch top, both sides set to vertical form, increase the space between cell body 10 and the nanometer membrane 31, improve the place utilization ratio.

Wherein, the steel frame 300 is made of hot galvanizing plastic-coated pipe, and has the anti-corrosion effect.

Illustratively, the frame body 30 further includes a connecting rod 302, the connecting rod 302 is mounted on the arch bar 3000, the connecting rod 302 extends along the length direction of the trough body 10, and the connecting rod 302 is connected in series with all the arch bars 3000, so as to increase the structural strength of the steel frame 300.

Illustratively, referring to fig. 10, a connection fixing member 304 is arranged on one side of the steel frame 300 facing the tank, and the connection rods 302 are mounted on the connection fixing member 304, wherein the connection fixing member 304 is a mounting ring, the mounting ring fixes one side of the arch rod 3000 facing the tank 10, the mounting rings on all the arch rods 3000 are located on the same straight line, the connection rods 302 penetrate through the mounting ring, so that the connection rods 302 are conveniently mounted and dismounted, the mounting ring is located on one side of the arch rod 3000 facing the tank 10, the outer side of the arch rod 3000 is smooth, the surface of the nanomembrane 31 is ensured to be smooth, and the partial stress damage of the nanomembrane 31 is avoided.

Illustratively, a sealing structure 4 is arranged at the joint of the tank body 10 and the nano film 31, the tank body 10 and the nano film 31 are in sealing connection through the sealing structure 4, and the sealing structure 4 ensures that the tank body 10 and the nano film 31 are in sealing connection, so that the phenomenon of leakage at the joint of the tank body 10 and the nano film 31 is avoided, and the phenomenon of leakage of odor generated in the fermentation process and environmental pollution are avoided.

Illustratively, referring to fig. 7 and 8, the sealing structure 4 includes a sealing portion 40 and a sealing engagement portion 41, the sealing portion 40 is disposed at the top of the tank body 10 and the side of the opening 12, and the sealing engagement portion 41 fixes the nano-film 31 on the sealing portion 40, wherein the sealing portion 40 is a sealing strip, the sealing strip is a square groove with a square cross section and an opening on one side, the sealing engagement portion 41 is a steel wire, the nano-film 31 is fixed in the square groove through the steel wire, the steel wire contacts with the inner wall of the square groove, the steel wire is screwed, the nano-film 31 is fixed, and the nano-film 31 is ensured to be in sealing contact with the sealing portion 40 at the same time, the sealing structure is simple, the installation cost is low, and the nano-film 31 is convenient to disassemble. It is understood that the sealing part 40 and the sealing engagement part 41 may have a snap structure, and the nanomembrane 31 is snapped between the sealing part 40 and the sealing engagement part 41.

For example, referring to fig. 3 and 5, sealing portions 40 are disposed on two sides of the steel frame 300, and sealing engagement portions 41 fix the nano-film 31 on the sealing portions 40 of the steel frame 300, where the sealing portions 40 are sealing strips extending along the length direction of the steel frame 300, the sealing strips are square grooves with a square cross section and an opening on one side, the sealing engagement portions 41 are steel wires, the nano-film 31 is fixed in the square grooves through the steel wires, the steel wires are in contact with the inner walls of the square grooves, the steel wires are screwed, the nano-film 31 is convenient to mount and dismount, and the sealing effect is good.

Illustratively, referring to fig. 3 and 4, the fermentation tank is in a first form, the tank body 10 includes a tank bottom 100 and three side walls 102, an opening 12 is formed on one side of the tank body 10, the frame body 30 spans two pairs of side walls 102, and the opening 12 is a feeding port and a discharging port.

Illustratively, referring to fig. 5 and 6, the fermentation tank is in a second form, the tank body 10 is enclosed by a tank bottom 100 and two side walls 102, the two side walls 102 are arranged in parallel, two ends of the tank body 10 form openings 12, the frame body 30 is spanned on the two side walls 102, one of the openings 12 is a feeding hole, and the other opening 12 is a discharging hole.

It is understood that the fermentation tank is in the first form or the second form, and can be determined according to the size of the actual field.

It is understood that the tank 10 may be constructed of concrete or may be constructed of other sealing materials. When the trough body 10 is constructed by concrete, the foundation site is hardened first, the side walls are piled up, and the frame body 30 is fixed by embedding or fixing by anchor bolts.

It will be appreciated that the tank 10 may be of an underground tank, a ground tank or a semi-ground tank construction.

Illustratively, referring to fig. 4, 6 and 11, the ventilation system 2 includes a fan and a sewage collection tank 5, one end of a plurality of ventilation pipes 20 is connected to the fan, the other end of the ventilation pipes 20 is connected to the sewage collection tank 5, a first switch member 22 is arranged between one end of the ventilation pipes 20 and the fan, and a second switch member is arranged between the other end of the ventilation pipes 20 and the sewage collection tank 5. First switch 22 is opened, the oxygen that the fan flows out provides oxygen for material fermentation in the ventilation pipe 20 gets into cell body 10, second switch opens, produce sewage because of the fermentation in the cell body 10 and flow into sewage collecting pit 5 through ventilation pipe 20, collect the processing in unison, fan and sewage collecting pit 5 are located ventilation pipe 20's both ends respectively, when the fan goes out oxygen, apply certain pressure in giving ventilation pipe 20, be favorable to the sewage discharge, the ventilation pipe has the function of ventilation and blowdown concurrently.

Illustratively, referring to fig. 4 and 9, a plurality of ventilation pipes 20 are arranged in a direction perpendicular to the side of the opening 12, the ends of the plurality of ventilation pipes 20 are communicated with a communicating pipe 21, the communicating pipe 21 is communicated with a fan, the communicating pipe 21 is provided with a first switch member 22, and the first switch member 22 controls all the ventilation pipes 20 to be opened or closed simultaneously, so that the method is suitable for one-time integral composting control.

Illustratively, referring to fig. 6, a plurality of ventilation pipes 20 are arranged in a direction parallel to the sides of the openings 12, each ventilation pipe 20 is provided with a first switch member 22, the tail end of the ventilation pipe 20 is communicated with the fan through a communication pipe 21, wherein the trough body 10 is provided with two openings 12 which are respectively a feed inlet and a discharge outlet, the space in the trough body 10 can be used for batch composting in batches according to the use requirement, and the first switch members 22 of the ventilation pipes 20 below the batch composting are respectively controlled to be opened or closed by adopting the first-in first-out principle.

Illustratively, the first switch member 22 is a ball valve, which can adjust the air intake of the ventilation pipe 20.

Wherein, the ventilation pipe 20 is a PE pipe, and the ventilation holes are arranged on the ventilation pipe 20 at intervals. It will be appreciated that the vent holes in two adjacent vent tubes 20 are staggered.

It can be understood that, in order to ensure the flatness of the bottom of the tank body 10 and facilitate feeding and discharging in the composting process, the bottom of the tank body 10 is provided with a pipe groove 101, the ventilation pipe 20 is laid in the corresponding pipe groove 101, one end of the ventilation pipe 20 extends out of the tank body 10, and the first switch piece 22 is located outside the tank body 10.

In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.

In the description of the present application, the terms "first", "second" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more features.

The film covering device for compost fermentation provided by the embodiment of the application is described in detail above, and the principle and the embodiment of the application are explained by applying specific examples, and the description of the above embodiment is only used for helping to understand the method and the core idea of the application; meanwhile, for those skilled in the art, according to the idea of the present application, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present application.

Claims

1. A film covering device for compost fermentation is characterized by comprising:

a nanomembrane having filtration pores;

the nanometer membrane covers the frame body, a fermentation space is formed in the frame body and used for material stacking, different gas molecules are generated by material fermentation, the gas molecules smaller than the filtering holes penetrate through the nanometer membrane, and the fermentation space is provided with an opening for material to enter and exit;

the frame body with the junction of nanometer membrane is provided with seal structure, the frame body with the nanometer membrane passes through seal structure sealing connection.

2. A mulch applicator for composting as claimed in claim 1 wherein the frame includes an arched top and a support on which the arched top is mounted.

3. The tectorial membrane device for compost fermentation as claimed in claim 2, wherein the supporting portion comprises two retaining walls which are oppositely arranged at intervals, the arch top is spanned on the retaining walls, the nano-membrane covers on the arch top, and the nano-membrane is connected with the retaining walls in a sealing way.

4. A mulch applicator as claimed in claim 2 wherein the support includes two spaced opposed supports, the nano-film covering the arched top and the supports.

5. A composting and fermenting mulch applicator as claimed in claim 2 wherein the arched roof is an arched steel frame mounted to the support.

6. A mulching device for compost fermentation as claimed in claim 1, wherein said frame body includes a plurality of arch bars, said arch bars being spaced apart from each other in a predetermined direction, and said nano film being coated on said arch bars.

7. A mulching device for compost fermentation as claimed in claim 6, wherein said frame body further comprises a connecting rod extending in a predetermined direction, and a plurality of said arch bars are mounted on said connecting rod.

8. A composting and fermenting membrane covering device as claimed in claim 7, wherein the arch-shaped rods are provided with connecting fixtures on which the connecting rods are mounted.

9. A mulch applicator for composting fermentation as claimed in claim 1 wherein the sealing structure includes a sealing portion and a sealing engagement portion, the sealing portion being disposed on the frame body, the nanomembrane being sealingly mounted on the sealing portion by the sealing engagement portion.