Quantitative feeding and discharging mesh biogas production device

Abstract

The invention relates to a quantitative charging and discharge material grid type biogas production device which comprises a biogas digester, material boxes, a material box lifting device, a charging hole, a discharge hole and a biogas slurry backflowing device arranged inside the biogas digester, wherein a top cover is fixed at the top part of the biogas digester in a sealed manner; an gas outlet is formed in the top cover; the charging hole is formed in the top part at one end of the biogas digester; the discharge hole is formed in the top part of the other end of the biogas digester; a guide rail is arranged at the bottom of the biogas digester and corresponds to the charging hole and the discharge hole in the vertical direction; rollers matched with the guide rail are arranged at the bottom of the material boxes; the material boxes enter the bottom of the biogas digester from the charging hole through the material box lifting device and are connected with the guide rail in a rolling manner; grids are uniformly distributed on the shells of the material boxes; bacteria adhesion membranes are respectively arranged on two sides of the periphery of the guide rail inside the biogas digester; and heating mechanisms are arranged on two sides of the periphery of the bacteria adhesion membranes. The device is a quantitative charging and discharge material grid type biogas production device which is simple in equipment, convenient to operate, high in biogas production efficiency, convenient in material discharging and charging and capable of quantitatively controlling fermentation raw materials.

Description

technical field [0001] The invention relates to the field of biogas production, in particular to a grid-type biogas production device for quantitatively feeding and discharging materials. Background technique [0002] With the rapid development of my country's economy, the pace of new rural construction and urbanization across the country is also accelerating. Due to the shrinkage of farmers' homesteads, the reduction of farming households, and the sharp increase in rural migrant workers, the use of household biogas digesters in rural areas has been affected. Promotion, the development of rural household biogas is facing challenges. [0003] Whether it is a household biogas digester or a large-scale biogas digester, there are currently the following problems that are difficult to solve: 1. The fermentation raw materials are naturally stratified: sediment layer, active layer, clear liquid layer, and scum layer. The gas-producing parts are mainly in the Active layer, due to th...

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Problems solved by technology

[0003] Whether it is a household biogas digester or a large-scale biogas digester, there are currently the following problems that are difficult to solve: 1. The fermentation raw materials are naturally stratified: sediment layer, active layer, clear liquid layer, and scum layer. The gas-producing parts are mainly in the Active layer, due to the stratification of fermentation raw materials, biogas bacteria cannot fully contact with raw materials, resulting in very low fermentation concentration (generally not more than 10%), the volume utilization rate of the biogas digester is lower, and the gas-producing part does not even account for the entire biogas digester volume At the same time, the scum is easy to form dense crusts, which is not conducive to the release of biogas; 2. The inflow and outflow of fermentation raw materials cannot be precisely controlled, and the daily management of biogas digesters is entirely an empirical qualitative management; 3. The fermentation raw material is easy to form a dead angle in the biogas digester, and at the same time, it is easy to form a short circuit, so that the raw material will be discharged without being fully fermented; 4. It is difficult to remove the slag. It needs a large discharge to remove the sediment in the tank, otherwise the fermentation volume in the tank will be greatly reduced, and the gas production rate will be doubled; 6. The residence period of biogas bacteria in the tank is relatively short, and it is difficult to accurately control the residence period of raw materials in the tank; 7. The fermentation temperature is unstable and is greatly affected by the external environment temperature, resulting in Gas production efficiency is low

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