CN112760201A

CN112760201A - Domestic waste gas recovery device

Info

Publication number: CN112760201A
Application number: CN202011609971.8A
Authority: CN
Inventors: 刘德早
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-12-30
Filing date: 2020-12-30
Publication date: 2021-05-07

Abstract

The invention discloses a household garbage waste gas recovery device which comprises a support, wherein a motor is hinged to the upper surface of the support, the lower surface of the motor is hinged to the upper surface of the support, a box body is hinged to the upper surface of the support, the lower surface of the box body is hinged to the upper surface of the support, a first rotating wheel is sleeved on the outer wall of the motor, the inner wall of the first rotating wheel is connected with the outer wall of the motor in a sleeved mode, and the outer wall of the first rotating wheel is movably connected with the inner wall of the box body. This domestic waste gas recovery unit, through the cooperation between motor, first runner, second runner, third runner and the fourth runner, under the effect of push rod, the motor is exchange servo motor, through the size of adjusting current through the produced power of motor and then the rotational speed of adjusting motor, through the rotational speed of adjusting motor, and then improves the rotational speed of push rod to the improvement is fit for using widely to domestic waste's decomposition speed.

Description

Domestic waste gas recovery device

Technical Field

The invention relates to the technical field of energy conservation and environmental protection, in particular to a domestic garbage waste gas recovery device.

Background

Along with the rapid development of social economy, the acceleration of urbanization process and the rapid improvement of the living standard of people in China, garbage wastes generated in the urban production and living process are rapidly increased, the domestic garbage occupies land, the environment pollution condition and the influence on the health of people are more obvious, the large amount of the municipal domestic garbage is increased, the garbage treatment is more and more difficult, the environmental pollution and other problems are gradually attracted by the wide attention of various social circles, the nation highly pays attention to the environmental protection problem, the domestic garbage and sewage prevention and treatment work is greatly developed, however, the classification, the recovery and treatment capability and the horizontal development of the domestic garbage are relatively lagged while the domestic garbage yield is continuously increased in China, namely the domestic garbage treatment technology in China is very weak, so the applicability of the domestic garbage treatment technology becomes a very important problem for solving the domestic garbage, the treatment of domestic garbage technology selection is often a difficult problem of municipal domestic garbage treatment, China needs to face the industrial, resource, reduction and harmless treatment of municipal domestic garbage, and aiming at the problems, various technologies are applied to mix collection, the content and the heat value of recoverable substances are low, the water content of the garbage and the biodegradable domestic garbage with high organic content, the garbage including the garbage such as recycling, landfill, incineration, compost and the like are waste products generated in production and life, if the garbage can not be properly treated, the environment can be polluted, however, if the garbage is properly used, the garbage can also be changed into valuables, the domestic garbage is piled up into piles, stored and fermented at 70 ℃, organic matters are decomposed into inorganic nutrients by virtue of the microbial decomposition capacity in the garbage, and after the composting treatment, the domestic garbage becomes sanitary and tasteless humus, the garbage compost device not only solves the problem of garbage going out, but also can achieve the purpose of recycling, but also has large compost amount of domestic garbage, low nutrient content and easy soil hardening and underground water quality deterioration caused by long-term use, in the prior art, for example, the invention patent with application number 201620438288.5 comprises a fermentation chamber, a gas tank, a fan and a filter, wherein the filter is arranged below the fermentation chamber, a gas collector is arranged above the inner part of the fermentation chamber, a catalyst spray head is arranged above the inner part of the fermentation chamber, the gas tank is arranged at the top of the fermentation chamber, a gas pressure gauge is arranged on one side of the gas tank, a gas output pipe is arranged on one side of the gas tank, a filter screen is arranged on one side of the inner part of the fermentation chamber, the fan is arranged on one side of the top of the fermentation chamber, a bracket is arranged on one side of the, the household garbage waste gas recovery device is simple in structure, but has many defects and shortcomings, and in the existing equipment, the design of a fermentation chamber has defects, when household garbage is fermented in the fermentation chamber, the volume is too large, the reaction speed is slow, the fermentation time is long, the household garbage is not suitable for collecting waste gas in a short time, the working efficiency is low, the household garbage which cannot be completely fermented needs to be manually removed, the workload of workers is increased, the workers are easy to feel fatigue, and the working efficiency is reduced.

Disclosure of Invention

The invention aims to provide a domestic garbage waste gas recovery device to solve the problems in the background technology.

In order to achieve the purpose, the invention provides the following technical scheme: a household garbage waste gas recovery device comprises a support, wherein a motor is hinged to the upper surface of the support, the lower surface of the motor is hinged to the upper surface of the support, a box body is hinged to the upper surface of the support, the lower surface of the box body is hinged to the upper surface of the support, a first rotating wheel is sleeved on the outer wall of the motor, the inner wall of the first rotating wheel is connected with the outer wall of the motor in a sleeved mode, the outer wall of the first rotating wheel is movably connected with the inner wall of the box body, a first rotating rod is installed on the inner wall of the box body, the outer wall of the first rotating rod is movably connected with the inner wall of the box body, a second rotating rod is installed on the inner wall of the box body, the outer wall of the second rotating rod is movably connected with the inner wall of the box body, a push rod is installed on the outer wall of the second rotating rod, the inner wall of the push rod is connected with the, the inner wall of the third rotating wheel is connected with the outer wall of the first rotating rod in a sleeved mode, the outer wall of the second rotating rod is connected with the third rotating wheel in a sleeved mode, the inner wall of the third rotating wheel is connected with the outer wall of the second rotating rod in a sleeved mode, the outer wall of the first rotating rod is connected with the second rotating wheel in a sleeved mode, the inner wall of the second rotating wheel is connected with the outer wall of the first rotating rod in a sleeved mode, the outer wall of the second rotating rod is connected with the fourth rotating wheel in a sleeved mode, the inner wall of the fourth rotating wheel is connected with the outer wall of the second rotating rod in a sleeved mode, the outer wall of the first rotating wheel is connected with the inner wall of the second rotating wheel in a meshed mode, the outer wall of the third rotating wheel is connected with the inner wall of the fourth rotating wheel in a meshed mode, the inner wall of the feeding port is connected with the outer wall of the push rod, the inner wall of the box body is provided, the outer wall of first filter screen links to each other with the inner wall of box is articulated, the water pump is installed to the inner wall of box, the outer wall of water pump links to each other with the inner wall of box is articulated, the nozzle is installed to the inner wall of water pump, the outer wall of nozzle links to each other with the inner wall of water pump, the below of first filter screen is equipped with the fermentation chamber, the outer wall of fermentation chamber links to each other with the inner wall of box, the second filter screen is installed to the below of fermentation chamber, the outer wall of second filter screen links to each other with the inner wall of box is articulated, the below of second filter screen is equipped with the collection box, the outer wall of collection box links to each other with the inner wall of box, the right side of collection box is equipped with.

Preferably, the right side outer wall of gas vent is equipped with the apron, the inner wall of apron links to each other with the outer wall activity of gas vent, apron outer wall installs splint, the inner wall of splint links to each other with the outer wall of apron, compression spring is installed to the inner wall of splint, compression spring's outer wall links to each other with the inner wall activity of splint, the dog is installed to compression spring's outer wall, the inner wall of dog links to each other with compression spring's outer wall, the inserted bar is installed to the inner wall of splint, the outer wall of inserted bar and the inner wall slip joint of splint.

Preferably, the outer wall of the right side of the fermentation chamber is provided with a dredging opening, and the inner wall of the dredging opening is connected with the outer wall of the fermentation chamber.

Preferably, the upper surface of the motor is welded with a hanging ring, and the lower surface of the hanging ring is welded with the upper surface of the motor.

Preferably, the welding of the left side outer wall of support has the set-square, the right side outer wall of set-square links to each other with the left side outer wall welding of support.

Compared with the prior art, the invention has the beneficial effects that:

1. this domestic waste gas recovery unit, through the cooperation between motor, first runner, second runner, third runner and the fourth runner, under the effect of push rod, the motor is exchange servo motor, through the size of adjusting current through the produced power of motor and then the rotational speed of adjusting motor, through the rotational speed of adjusting motor, and then improves the rotational speed of push rod to the improvement is to domestic waste's decomposition speed, improves domestic waste's decomposition efficiency.

2. This domestic waste gas recovery device, when overcoming traditional waste gas recovery device and fermenting at the fermentation chamber as domestic waste, because its is bulky, reaction rate is slow, and fermentation time is long, unsuitable short-term waste gas of collecting, work efficiency is low to the domestic waste that can not ferment completely needs artifical manual the driving, has addd staff's work load, makes the staff easily feel tired, the shortcoming that work efficiency reduces.

3. This domestic waste gas recovery unit has overcome current domestic waste gas recovery unit and has relied on the fermentation chamber to carry out the regulation of fermentation to domestic waste and handle, and practical function is single shortcoming, has improved this domestic waste gas recovery unit's work efficiency and life.

4. This domestic waste gas recovery unit, when having avoided the use, when domestic waste ferments in the fermentation chamber, because its is bulky, reaction rate is slow, and fermentation time is long, unsuitable short-term waste gas of collecting, work efficiency is low to the domestic waste that can not ferment completely needs artifical manual the driving, has addd staff's work load, makes the staff easily feel tired, the shortcoming that work efficiency reduces.

5. This domestic waste gas recovery device lets current domestic waste gas recovery device can obtain more recognition on the market, has improved this domestic waste gas recovery device's product quality, has saved user's purchasing cost, has avoided domestic waste gas recovery device's wasting of resources, is fit for using widely.

Drawings

FIG. 1 is a diagram showing a connection relationship between a bracket, a first motor and a case;

FIG. 2 is a diagram of the connection of the second wheel, the third wheel and the fourth wheel of FIG. 1;

fig. 3 is a view showing a connection relationship between the cover plate, the clamping plate and the compression spring of fig. 1.

In the figure: 001. the support, 002, the motor, 003, the box, 004, first bull stick, 005, the second bull stick, 006, first runner, 007, the second runner, 008, the third runner, 009, the fourth runner, 010, the push rod, 011, the pan feeding mouth, 012, the discharge gate, 013, first filter screen, 014, the water pump, 015, the nozzle, 016, the fermentation chamber, 017, the second filter screen, 018, the collection box, 019, the gas vent, 020, desilting mouth, 021, apron, 022, splint, 023, compression spring, 024, inserted bar, 025, the dog, 026, rings, 027, the set-square.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the 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 invention.

Referring to fig. 1-3, the present invention provides a technical solution: the utility model provides a domestic waste gas recovery unit, which comprises a bracket 001, fixed motor 002, promote holistic stability can, the left side outer wall welding of bracket 001 has set-square 027, make the connection between motor 002 and the bracket 001 more firm, the right side outer wall of set-square 027 links to each other with the left side outer wall welding of bracket 001, the upper surface of bracket 001 articulates there is motor 002, motor 002 is the AC servo motor, the model is SF-09L, be used for adjusting the rotational speed of first bull wheel 006, the upper surface welding of motor 002 has rings 026, use when removing or hoisting motor 002, the lower surface of rings 026 links to each other with the upper surface welding of motor 002, the lower surface of motor 002 links to each other with the upper surface of bracket 001 articulates, the upper surface of bracket 001 articulates there is box 003, install first bull stick 004 and second bull stick 005, decompose domestic waste under the drive of motor 002, the lower surface of box 003 links to each other with the upper surface of bracket 001, the outer wall of the motor 002 is sleeved with a first rotating wheel 006, the second rotating wheel 007 is driven to rotate in a meshing connection mode, the inner wall of the first rotating wheel 006 is sleeved and connected with the outer wall of the motor 002, the outer wall of the first rotating wheel 006 is movably connected with the inner wall of the box 003, the first rotating rod 004 is installed on the inner wall of the box 003, the second rotating wheel 007 and the third rotating wheel 008 are connected and fixed, the outer wall of the first rotating rod 004 is movably connected with the inner wall of the box 003, the second rotating rod 005 is installed on the inner wall of the box 003, the fourth rotating wheel 009 and the push rod 010 are installed on the outer wall of the second rotating rod 005, the inner wall of the push rod 010 is connected with the outer wall of the second rotating rod 005, the third rotating wheel 008 is sleeved and connected with the outer wall of the first rotating rod 004, the fourth rotating wheel is driven to rotate in a meshing connection mode, the inner wall of the third rotating wheel 008 is sleeved and connected with the outer wall of the first rotating rod 004, the outer wall of the second rotating rod 005 is sleeved with a third rotating wheel 008, the inner wall of the third rotating wheel 008 is sleeved with the outer wall of the second rotating rod 005, the outer wall of the first rotating rod 004 is sleeved with a second rotating wheel 007 which is connected in a meshing connection manner by a first rotating wheel 006 and rotates along with the first rotating wheel 006, the inner wall of the second rotating wheel 007 is sleeved with the outer wall of the first rotating rod 004, the outer wall of the second rotating rod 005 is sleeved with a fourth rotating wheel 009, the inner wall of the fourth rotating wheel 009 is sleeved with the outer wall of the second rotating rod 005, the outer wall of the first rotating wheel 006 is meshed with the inner wall of the second rotating wheel 007, the outer wall of the third rotating wheel 008 is meshed with the inner wall of the fourth rotating wheel 009, the outer wall of the push rod 010 is provided with a feeding port 011, the inner wall of the feeding port 011 is connected with the outer wall of the push rod 010, the inner wall of the box body 003 is provided with a discharging port 012, the decomposed household, the outer wall of the discharge port 012 is connected with the inner wall of the box body 003, a first filter screen 013 is installed below the discharge port 012 to filter the domestic garbage, the mesh number of the first filter screen 013 is between 6-36 meshes, the outer wall of the first filter screen 013 is hinged with the inner wall of the box body 003, a water pump 014 is installed on the inner wall of the box body 003, the model of the water pump 014 is S-09L and is used for spraying a catalyst to the domestic garbage to accelerate the decomposition of the domestic garbage, the outer wall of the water pump 014 is hinged with the inner wall of the box body 003, a nozzle 015 is installed on the inner wall of the water pump 014 to spray the catalyst to the domestic garbage, the outer wall of the nozzle 015 is connected with the inner wall of the water pump 014, a fermentation chamber 016 is arranged below the first filter screen 013 to ferment the domestic garbage sprayed with the catalyst, a dredging port 020 is arranged on the outer wall on the right side of the fermentation chamber 016 to clean the domestic garbage in the, the outer wall of the fermentation chamber 016 is connected with the inner wall of the box body 003, a second filter screen 017 is installed below the fermentation chamber 016, the mesh number of the second filter screen 017 is between 6 and 36 meshes, domestic garbage is prevented from entering the recycling box 018, the outer wall of the second filter screen 017 is hinged with the inner wall of the box body 003, a recycling box 018 is arranged below the second filter screen 017, methane in the fermentation chamber 016 is recycled, the outer wall of the recycling box 018 is connected with the inner wall of the box body 003, an exhaust port 019 is arranged on the right side of the recycling box 018, waste gas in the recycling box 018 is exhausted, a cover plate 021 is arranged on the right side outer wall of the exhaust port 019, the exhaust port 019 is sealed, the inner wall of the cover plate 021 is movably connected with the outer wall of the exhaust port 019, a clamp plate 022 is installed on the outer wall of the cover plate 021, a compression spring 023 is installed and fixed, the inner wall of the clamp plate 022 is connected with the outer wall of the cover plate 021, a compression, fixed inserted bar 024 is in splint 022, fix apron 021 on splint 022, seal gas vent 019, compression spring 023's outer wall links to each other with the inner wall activity of splint 022, stop dog 025 is installed to compression spring 023's outer wall, restriction inserted bar 024's displacement, stop dog 025's inner wall links to each other with compression spring 023's outer wall, inserted bar 024 is installed to splint 022's inner wall, fix apron 021 on splint 022, inserted bar 024's outer wall and splint 022's inner wall slip joint, gas vent 019's inner wall links to each other with the outer wall of box 003.

A domestic waste gas recovery device, this domestic waste gas recovery device is by the support 001, the motor 002, the box 003, the first bull stick 004, the second bull stick 005, the first runner 006, the second runner 007, the third runner 008, the fourth runner 009, the push rod 010, the pan feeding mouth 011, the discharge gate 012, the first filter screen 013, the water pump 014, the nozzle 015, the fermentation chamber 016, the second filter screen 017, the collection box 018, the gas vent 019, the desilting mouth 020, the apron 021 and splint 022, should match the size, especially interference fit size and relevant precision of the major fit of spare part to go on rechecking before the assembly, when the same part is fastened with many screws (bolts), each screw (bolt) need to intersect, symmetry, progressively, evenly tighten, while using, switch on the external power supply of the motor 002, the motor 002 begins to rotate, drive the first runner 006 to rotate, the first runner 006 is fixed in the box 003, the first rotating wheel 006 rotates to drive the second rotating wheel 007 to rotate, the second rotating wheel 007 rotates to drive the first rotating rod 004 to rotate, the first rotating rod 004 rotates to drive the third rotating wheel 008 connected with the first rotating rod 004 to rotate, the third rotating wheel 008 rotates to drive the fourth rotating wheel 009 to rotate, the fourth rotating wheel 009 rotates to drive the second rotating rod 005 to rotate, the second rotating rod 005 rotates to drive the push rod 010 to rotate, the household garbage is put into the material inlet 011, passes through the material inlet 011, is selectively pushed by the push rod 010 to fall onto the first filter screen 013 through the material outlet 012 and is filtered by the first filter screen 013, the household garbage passing through the first filter screen 013 enters the fermentation chamber 016, an external power supply of the water pump 014 is connected at the moment, the water pump 014 starts to work, the catalyst is sprayed to the household garbage, the reaction of the household garbage is accelerated to enable the household garbage to produce biogas, the generated biogas enters the recycling tank 018 through the second filter screen 017, and the assembly work of the household garbage waste gas recycling device is completed.

In the description of the present invention, it is to be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "one side", "top", "inner", "front", "center", "both ends", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the present invention, unless otherwise expressly specified or limited, the terms "mounted," "disposed," "connected," "secured," "screwed" and the like are to be construed broadly, e.g., as meaning fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; the terms may be directly connected or indirectly connected through an intermediate, and may be communication between two elements or interaction relationship between two elements, unless otherwise specifically limited, and the specific meaning of the terms in the present invention will be understood by those skilled in the art according to specific situations.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a domestic waste exhaust recovery device, includes support (001), its characterized in that: the upper surface of support (001) articulates there is motor (002), the lower surface of motor (002) links to each other with the upper surface of support (001) is articulated, the upper surface of support (001) articulates there is box (003), the lower surface of box (003) links to each other with the upper surface of support (001) is articulated, first runner (006) has been cup jointed to the outer wall of motor (002), the inner wall of first runner (006) and the outer wall of motor (002) cup joint continuously, the outer wall of first runner (006) links to each other with the inner wall activity of box (003).

2. The domestic waste gas recovery device of claim 1, wherein: first bull stick (004) is installed to the inner wall of box (003), the outer wall of first bull stick (004) links to each other with the inner wall activity of box (003), second bull stick (005) is installed to the inner wall of box (003), the outer wall of second bull stick (005) links to each other with the inner wall activity of box (003).

3. The domestic waste gas recovery device of claim 2, wherein: push rod (010) are installed to the outer wall of second bull stick (005), the inner wall of push rod (010) links to each other with the outer wall of second bull stick (005), the outer wall of first bull stick (004) has cup jointed third runner (008), the inner wall of third runner (008) and the outer wall of first bull stick (004) cup joint and link to each other, third runner (008) has been cup jointed to the outer wall of second bull stick (005), the inner wall of third runner (008) and the outer wall of second bull stick (005) cup joint and link to each other, second runner (007) has been cup jointed to the outer wall of first bull stick (004), the inner wall of second runner (007) and the outer wall of first bull stick (004) cup joint and link to each other.

4. The domestic waste gas recovery device of claim 2, wherein: the outer wall of the second rotating rod (005) is sleeved with a fourth rotating wheel (009), the inner wall of the fourth rotating wheel (009) is sleeved with the outer wall of the second rotating rod (005), the outer wall of the first rotating wheel (006) is meshed with the inner wall of the second rotating wheel (007), the outer wall of the third rotating wheel (008) is meshed with the inner wall of the fourth rotating wheel (009), the outer wall of the push rod (010) is provided with a feed inlet (011), the inner wall of the feed inlet (011) is connected with the outer wall of the push rod (010), the inner wall of the box body (003) is provided with a discharge outlet (012), the outer wall of the discharge outlet (012) is connected with the inner wall of the box body (003), a first filter screen (013) is installed below the discharge outlet (012), the outer wall of the first filter screen (013) is hinged with the inner wall of the box body (003), and a water pump (014) is installed on the inner wall of the box body, the outer wall of water pump (014) links to each other with the inner wall of box (003) is articulated, nozzle (015) are installed to the inner wall of water pump (014), the outer wall of nozzle (015) links to each other with the inner wall of water pump (014), the below of first filter screen (013) is equipped with fermentation chamber (016), the outer wall of fermentation chamber (016) links to each other with the inner wall of box (003), second filter screen (017) are installed to the below of fermentation chamber (016), the outer wall of second filter screen (017) links to each other with the inner wall of box (003) is articulated, the below of second filter screen (017) is equipped with collection box (018), the outer wall of collection box (018) links to each other with the inner wall of box (003), the right side of collection box (018) is equipped with gas vent (019), the inner wall of gas vent (019) links to each other with the outer wall of box (003.

5. The domestic waste gas recovery device of claim 4, wherein: the right side outer wall of gas vent (019) is equipped with apron (021), the inner wall of apron (021) links to each other with the outer wall activity of gas vent (019), splint (022) are installed to apron (021) outer wall.

6. The domestic waste gas recovery device of claim 5, wherein: the inner wall of splint (022) links to each other with the outer wall of apron (021), compression spring (023) is installed to the inner wall of splint (022), the outer wall of compression spring (023) links to each other with the inner wall activity of splint (022), dog (025) is installed to the outer wall of compression spring (023), the inner wall of dog (025) links to each other with the outer wall of compression spring (023), inserted bar (024) is installed to the inner wall of splint (022), the outer wall of inserted bar (024) and the inner wall slip joint of splint (022).

7. The domestic waste gas recovery device of claim 4, wherein: the right side outer wall of fermentation chamber (016) is equipped with desilting mouth (020), the inner wall of desilting mouth (020) links to each other with the outer wall of fermentation chamber (016).

8. The domestic waste gas recovery device of claim 1, wherein: the upper surface of the motor (002) is welded with a hanging ring (026), and the lower surface of the hanging ring (026) is welded with the upper surface of the motor (002).

9. The domestic waste gas recovery device of claim 1, wherein: the left side outer wall welding of support (001) has set square (027), the right side outer wall welding of set square (027) links to each other with the left side outer wall welding of support (001).

10. The exhaust gas recovery method of a domestic waste exhaust gas recovery apparatus according to any one of claims 1 to 9, characterized by comprising the steps of: the external power supply of the motor (002) is switched on, the motor (002) starts to rotate to drive the first rotating wheel (006) to rotate, the first rotating wheel (006) is fixed inside the box body (003), the first rotating wheel (006) rotates to drive the second rotating wheel (007) to rotate, the second rotating wheel (007) rotates to drive the first rotating rod (004) to rotate, the first rotating rod (004) rotates to drive the third rotating wheel (008) connected with the first rotating rod (004) to rotate, the third rotating wheel (008) rotates to drive the fourth rotating wheel (009) to rotate, the fourth rotating wheel (009) rotates to drive the second rotating rod (005) to rotate, the second rotating rod (005) rotates to drive the push rod (010) to rotate, the domestic garbage is put into the feed inlet (011), the domestic garbage passes through the feed inlet (011), is selectively pushed by the push rod (010) to fall into the first filter screen (013) through the discharge outlet (012), and is filtered by the first filter screen (013), the household garbage passing through the first filter screen (013) enters the fermentation chamber (016), an external power supply of the water pump (014) is connected at the moment, the water pump (014) starts to work, the catalyst is sprayed to the household garbage, the reaction of the household garbage is accelerated to produce biogas, and the generated biogas enters the recovery tank (018) through the second filter screen (017).