CN210765293U

CN210765293U - Fermentation device for preparing methane from household garbage

Info

Publication number: CN210765293U
Application number: CN201721428639.5U
Authority: CN
Inventors: 朱珍珍; 朱林
Original assignee: Individual
Current assignee: Individual
Priority date: 2017-10-31
Filing date: 2017-10-31
Publication date: 2020-06-16
Anticipated expiration: 2027-10-31

Abstract

A fermentation device for preparing methane from household garbage comprises a fermentation tank, a stirrer, a garbage crusher, a closed conveying belt, a fan and a conveying belt motor, wherein the fermentation tank is a horizontal closed cuboid, two ends of the fermentation tank are respectively provided with a side tank communicated with the fermentation tank, and conveying belt passing openings are respectively formed in the side walls of the two ends of the fermentation tank and at the positions corresponding to the bottoms of the side tanks; the conveyer belt motor drives a large-scale driving roller, and the conveyer belt gets into the fermentation vat from the feed end, comes out from the discharge end through the compression roller at fermentation vat bottom both ends, carries out the circulation rotation below each backing roll follow fermentation vat. The device has simple structure and convenient maintenance; the household garbage is recycled, can be recycled and continuously utilized, the land occupation and harmful gas generation of the household garbage can be reduced, and the pollution of garbage filtrate to water resources is reduced; the produced marsh gas can provide a large amount of clean energy, and the sorted waste plastics can be recycled, thus opening up a new way for the reasonable and effective utilization of the domestic garbage.

Description

Fermentation device for preparing methane from household garbage

Technical Field

The utility model relates to a fermentation device for preparing methane from household garbage.

Background

At present, several household garbage disposal technologies are commonly used, namely garbage landfill and garbage power generation. The garbage landfill is simple and easy to implement, but a large amount of land is occupied, a large amount of domestic garbage is generated in each city every day, and occupies a large amount of land, moreover, the quality of the project of the domestic garbage landfill field is slightly high, the garbage filtrate is easy to infiltrate, and further the pollution of underground water is caused, and the domestic garbage is decomposed and slowly buried due to the large amount of domestic garbage, so that the pollution of the underground water once the domestic garbage filtrate infiltrates is long. The method is simple and easy to implement, but the domestic garbage contains a large amount of moisture, so that the thermal efficiency of power generation is extremely low, and moreover, the domestic garbage is easy to generate harmful gases such as dioxin and the like during power generation, so that the pollution around a power plant is caused. Because the components of the household garbage are complex, the fermented biogas residues cannot be treated, so that the way of preparing biogas from the household garbage is limited.

Disclosure of Invention

The utility model aims at: the fermentation device for preparing the biogas from the household garbage is designed to reduce the occupation of the household garbage to the land and the generation of harmful gas, reduce the pollution of garbage filtrate to water resources, promote the effective utilization of the household garbage, recycle, enrich and persistently utilize the household garbage, change waste into valuable and open up a new way for the reasonable and effective utilization of the household garbage.

Realize the utility model discloses the technical scheme that the purpose adopted is: the garbage crusher comprises a fermentation tank, a stirrer, a garbage crusher, a closed conveying belt and a conveying belt motor, wherein the fermentation tank is a horizontal closed cuboid and is integrally supported on a supporting frame, and the stirrer is transversely arranged; two ends of the fermentation tank are respectively provided with a side tank communicated with the fermentation tank, the side tanks and the fermentation tank are equal in width, the upper parts of the side tanks are open, and conveying belt passing openings are respectively arranged on the side walls of the two ends of the fermentation tank and at the positions corresponding to the bottoms of the side tanks; a conveying belt motor is arranged beside the outer bottom of the fermentation tank and drives a large-scale driving roller, a conveying belt with the width equal to that of the inner part of the fermentation tank enters the fermentation tank from a conveying belt passing opening at a feeding end, and the conveying belt passes through pressing rollers at two ends of the bottom of the fermentation tank and comes out from a conveying belt passing opening at a discharging end and is circularly driven below the fermentation tank by each supporting roller; the feed inlet is arranged above the pool at the side of the feed end, and the garbage crusher is arranged on the feed inlet.

The fermentation tank is welded by steel plates or made of cement concrete.

The fermentation tank is arranged underground or on the ground.

A biogas slurry circulating pump is arranged in the side pool at the discharge end, one end of the biogas slurry circulating pipeline is connected with the biogas slurry circulating pump, and the other end of the biogas slurry circulating pipeline is connected with the feed inlet.

The included angle of the conveying belt at the discharging end and the bottom of the fermentation tank is less than 45 degrees.

A fan is arranged below the conveying belt at the discharge end.

The utility model has the advantages that: the structure is simple, the manufacture is easy, and the maintenance is convenient; the domestic garbage is recycled, can be recycled and continuously utilized, and the waste is changed into valuable; the land occupation of the domestic garbage and the generation of harmful gas can be reduced, and the pollution of the garbage filtrate to water resources is reduced; the produced biogas can provide a large amount of clean energy, and the sorted waste plastics can be recycled; promotes the effective utilization of the domestic garbage and opens up a new way for the reasonable and effective utilization of the domestic garbage.

Drawings

Fig. 1 is a schematic view of the use state of the present invention built on the ground.

Detailed Description

The utility model discloses as shown in figure 1, it includes fermentation vat 11, agitator 8, rubbish rubbing crusher 5, conveyer belt 12, fan 23, the conveyer belt motor, driving roller 18, backing roll 4, 16,

compression roller

19, 20, material loading slope 1, material loading platform 26 and braced frame 22 etc. establish a length slightly more than fermentation vat 11's pot hole 21 earlier on ground, with braced frame 22 pre-buried in pot hole 21, braced frame 22 height is the same with pot hole 21 degree of depth, be about 800mm, install on braced frame 22 bottom and ground parallel and level fermentation vat 11 bottom. A feeding platform 26 is built at the feeding end of one side of the fermentation tank 11, and a feeding slope 1 needs to be built at one side of the feeding platform 26 to facilitate feeding of the garbage transport vehicle 3 due to the fact that the feeding platform 26 is high; the fermentation tank 11 is a horizontal closed cuboid and is formed by welding steel plates, the length is about 35 meters, the height is 8 meters, the width is about 10 meters, and the tank capacity is about 2800 cubic meters; two ends of the fermentation tank 11 are respectively provided with a side tank 2 and a side tank 17 which are communicated with the fermentation tank 11, the side tanks 2 and 17 are equal in width to the fermentation tank 11, the upper parts of the side tanks are open, the parts, corresponding to the bottoms of the side tanks 2 and 17, of the side walls of the two ends of the fermentation tank 11 are respectively provided with a conveying belt through opening 7 and a conveying belt through opening 14, and the liquid level in the fermentation tank 11 is higher than the conveying belt through openings 7 and 14 so as to ensure the sealing of the gas in the fermentation tank 11; the supporting rollers 4 at the feeding end are respectively arranged at the upper opening edge and the bottom edge of the side tank 2 at the feeding end and are arranged below the conveying belt 12, the two ends of the bottom in the fermentation tank 11 are respectively provided with a pressing roller 19 and a pressing roller 20, and the supporting rollers 16 at the discharging end are respectively arranged outside the upper opening edge and the bottom edge of the side tank 17 at the discharging end; three stirrers 8 are transversely arranged in the fermentation tank 11, and the stirrers 8 are arranged in the middle of the fermentation tank 11; an inspection hole 9 is formed in the top of the fermentation tank 11, the inspection hole 9 is opened, biogas slurry is pumped, fresh air is blown in, the fermentation tank 11 can be placed into the tank to be inspected after biogas is discharged, a biogas gas guide pipe 10 is arranged on the side face of the inspection hole 9 and used for being connected with a biogas conveying pipeline, and a plurality of fermentation tanks 11 can be built side by side; a conveyer belt motor with a speed reducer is arranged beside the outer bottom of the fermentation tank, the speed reducer drives a large-scale driving roller 18, and the driving roller 18 drives the conveyer belt 12; the width of the conveying belt 12 is equal to that of the interior of the fermentation tank 11, the conveying belt 12 enters the fermentation tank 11 from a conveying belt passing opening 7 on the side wall of the fermentation tank at the feeding end, and is discharged from a conveying belt passing opening 14 at the discharging end through the

compression rollers

19 and 20 at two ends of the bottom of the fermentation tank 11, and then is circularly transmitted from the lower surface of the fermentation tank 11 through the supporting rollers outside the fermentation tank 11; the conveyor belt 12 is slightly away from the bottom of the fermentation tank, and in order to facilitate the solid materials to be sent out by the conveyor belt 12, the included angle between the discharge end of the conveyor belt 12 and the bottom of the fermentation tank 11 is designed to be 30 degrees; the feeding port 6 is arranged above the feeding end side tank 2, and the garbage crusher 5 is arranged on the feeding port 6; the fan 23 is arranged below the conveyer belt 12 at the discharge end, the solids which can not be fermented are taken out by the conveyer belt 12 and fall freely from the discharge end, the broken plastics which can not be fermented and are crushed by the garbage crusher 5 float on the liquid level, basically all the broken plastics are concentrated at the discharge end under the action of the stirrer 8 and the biogas slurry circulating pump 15 in the fermentation tank 11, are taken out of the fermentation tank 11 along with the movement of the conveyer belt 12 and fall freely along with the solids, and the fan 23 arranged below the discharge end blows outwards and is separated from the solids in the falling process due to the smaller specific gravity of the broken plastics; in order to improve the fermentation speed, a biogas slurry circulating pump 15 is arranged in a side tank 17 at the discharge end, one end of a biogas slurry circulating pipeline 13 is connected with the biogas slurry circulating pump 15, the other end of the biogas slurry circulating pipeline is connected with the feed inlet 6, the biogas slurry circulating pump 15 is started during feeding, and high-concentration biogas slurry can be conveyed to the feed end to enable household garbage entering the fermentation tank 11 to be rapidly fermented.

The biogas fermentation tank does not need a pretreatment facility, saves the complicated procedures before feeding, and is provided with a garbage crusher 5 in front of a feeding port 6 for crushing plastic bags and large household garbage. The feed inlet and the discharge outlet are both large and are provided with a forced stirrer, so that large particles can be fed, common straws and weeds can also enter the fermentation tank 11 for digestion, a large biogas slurry circulating pump 15 is arranged at the discharge end and can pump biogas slurry into the feed inlet 6, so that sufficient strains are ensured at the feed inlet, the raw materials can be instantly produced gas as soon as entering the feed inlet 6, and meanwhile, various raw materials can be smoothly fed into the fermentation tank 11 under the thrust of the biogas slurry.

The device has the following specific operations: the household garbage is transported to the front of a garbage crusher 5 above a feeding hole 6 of a fermentation tank 11 by a garbage transport vehicle 3, the garbage crusher 5 is started, the household garbage is slowly poured into the garbage crusher 5, various plastic bags and large household garbage and paper bags in the household garbage are completely crushed, a conveyor belt motor, a stirrer 8 and a biogas slurry circulating pump 15 in the fermentation tank 11 are started, and raw materials slowly enter the fermentation tank 11 from the feeding hole 6 under the driving of a conveyor belt 12 and the impact force of biogas slurry to produce biogas. Under the combined action of the transverse stirrer 8, the conveyer belt 12 and the biogas slurry circulating pump 15, undecomposed household garbage slowly moves to the discharge end of the fermentation tank 11 and slowly moves upwards along the conveyer belt 12 at the discharge end, and then flows back to the fermentation tank 11 under the action of the gravity of biogas slurry, so that the biogas residues and the biogas slurry are subjected to simple solid-liquid separation, and solid matters freely fall at the corner of the highest point of the conveyer belt 12; because the plastic products do not absorb water and are simply separated from solid before, the fan 23 below the highest point of the conveyer belt 12 controls the intensity of wind until only the plastic bag and the plastic products are blown away, the plastic products 25 can be used for cracking to prepare petroleum or liquefied gas and the like for treatment after being collected, and the brick tiles, iron, glass 24 and the like which are not blown away are simply and manually treated to be made into building materials; because the biogas slurry contains a large amount of nutrients, the biogas slurry can be used for farmland fertilization.

Claims

1. The utility model provides a fermenting installation of domestic waste system marsh gas, includes fermentation vat, agitator, and the agitator transversely sets up its characterized in that: the garbage fermentation device also comprises a garbage crusher, a closed conveying belt and a conveying belt motor, wherein the fermentation tank is a horizontal closed cuboid and is integrally supported on a support frame, two ends of the fermentation tank are respectively provided with a side tank communicated with the fermentation tank, the side tanks are as wide as the fermentation tank, the upper parts of the side tanks are open, and conveying belt passing openings are respectively arranged on the side walls of the two ends of the fermentation tank and correspond to the bottom parts of the side tanks; a conveying belt motor is arranged beside the outer bottom of the fermentation tank and drives a large-scale driving roller, the width of the conveying belt is equal to the width of the inner part of the fermentation tank, the conveying belt enters the fermentation tank from a conveying belt passing opening at a feeding end, and the conveying belt comes out from a conveying belt passing opening at a discharging end through compression rollers at two ends of the bottom of the fermentation tank and is circularly driven below the fermentation tank through supporting rollers; the feed inlet is arranged above the pool at the side of the feed end, and the garbage crusher is arranged on the feed inlet.

2. The fermentation device for producing biogas from household garbage according to claim 1, wherein: the fermentation tank is welded by steel plates or made of cement concrete.

3. The fermentation device for producing biogas from household garbage according to claim 1, wherein: the fermentation tank is arranged on the ground or underground.

4. The fermentation device for producing biogas from household garbage according to claim 1, wherein: a biogas slurry circulating pump is arranged in the side pool at the discharge end, one end of the biogas slurry circulating pipeline is connected with the biogas slurry circulating pump, and the other end of the biogas slurry circulating pipeline is connected with the feed inlet.

5. The fermentation device for producing biogas from household garbage according to claim 1, wherein: the included angle of the conveying belt at the discharging end and the bottom of the fermentation tank is less than 45 degrees.

6. The fermentation device for producing biogas from household garbage according to claim 1, wherein: a fan is arranged below the conveying belt at the discharge end.