CN2535407Y - Automatic circulating methane tank - Google Patents

Abstract

The utility model relates to the technical field of improving the structure of a biogas generating device, and discloses an automatic circulation biogas pit. It is mainly composed of a fermentation room, a gas storage room, a material inlet, a material outlet, a water pressure room, a movable cover, an air duct, and a control pool. Through the interaction between the upper overflow port between the discharge port and the water pressure, the communication hole between the water pressure room and the lower part of the control tank, the floating lifting hose connecting the communication hole in the control tank, and the interaction between the control tank and the lower communication hole of the water inlet, the biogas The liquid enters the discharge port from the fermentation room, flows into the water pressure room, enters the control tank, flows into the feed port, and flows back to the fermentation room for automatic circulation. It is characterized by simplicity, reliability, low cost, high efficiency, smooth operation, and low labor intensity, and is suitable for various biogas digesters or anaerobic devices.

Description

Automatic circulation biogas digester

Technical field

The utility model belongs to the category of biochemical enzymology and relates to the technical field of structural improvement of biogas generating devices.

technical background

In today's society where resources, population, and the environment are facing increasing pressure, the vigorous development of biogas digesters and anaerobic digesters, in addition to producing clean energy biogas, has practical significance for environmental protection and ecological construction, and is the focus of today's society. hot technologies and industries. However, a large number of biogas digesters and anaerobic digesters currently in operation have various defects. For example, the traditional hydraulic biogas digester, as shown in Figure 1, has a large tank capacity, low gas production, floating layer, sinking slag, and easy blockage of feed. , It is more difficult to discharge the material; and the labor intensity is high, the management is troublesome, and so on. Regardless of the treatment of human and livestock manure, sewage, and crop straw in rural areas, rural household biogas digesters mainly produce biogas energy and supplement environmental protection, and urban biogas digesters mainly focus on environmental protection and pollution treatment and supplement biogas production in cities and towns , including other various anaerobic digestion devices, can alleviate or eliminate the above-mentioned various defects, operate efficiently, and the technical difficulties and key points of automatic circulation are very concerned. Because the automatic cycle relies on its own power, it always makes the biogas slurry at the discharge port flow into the feed port in a directional way, dilutes the feed fermentation raw materials, makes it easy to enter the tank for fermentation, makes the distribution of raw materials reasonable, and increases the contact with anaerobic bacteria. , improve gas production rate, increase gas production, save manual operation, no equipment investment and power expenditure, greatly improve economic benefits.

The operation mode of the traditional hydraulic biogas digester (see Figure 1) is: human and animal manure, flushing sewage, crop stalks, various organic waste water and other fermentation materials enter the fermentation room (1) from the feed inlet (2), and the fermentation room The generated biogas rises to the gas storage room (12), and the feed liquid is squeezed, and the feed inlet (2) on both sides, the feed outlet (3), and the liquid level in the water pressure room (4) rise synchronously; when using gas, Potential difference pushes out the methane gas, and the feed liquid on both sides of the feed port (2), discharge port (3) and water pressure room (4) flows back, and the liquid level drops synchronously. In this way, the gas is produced continuously, and the liquid level continues to rise when the gas is used. , down, once the feed liquid is too much, it is scooped out as fertilizer or overflowed into another dung storage tank.

As can be seen in Fig. 1, because the fermentation raw material all enters from feed inlet (2) all the time, therefore, feed inlet (2) feed liquid concentration is big, and various human and animal feces, stalk, sewage etc. all are to accumulate near One side of the feed inlet (2) has less raw materials, which not only easily causes the feed to be blocked and difficult to enter, but also reduces the gas production due to the uneven distribution of raw materials. Therefore, it is often necessary to scoop the biogas slurry in the water pressure room (4) of the discharge port (3) to the feed port (2) to dilute the feed liquid concentration of the feed port (2) and make it enter the fermentation room. This kind of operation is both loaded down with trivial details, must be carried out frequently again, and management is troublesome, and labor intensity is big, if use water pump to extract, not only increase equipment investment, but also increase power expenditure.

Contents of Invention

The technical problem to be solved by the utility model is to propose an automatic circulation biogas digester in order to overcome the above-mentioned defects in the traditional water pressure biogas digester, which solves the problem that the biogas liquid between the water pressure of the discharge port can often and continuously enter the feed port. Automatically cycle up.

The automatic circulation biogas digester of the utility model is composed of a fermentation room, a gas storage room, a material inlet, a material outlet, a water pressure room, a movable cover, an air guide pipe, and a control pool. It is characterized in that the fermentation room and the gas storage room are a whole large tank. An overflow channel is provided on the upper part between the discharge port and the water pressure room, so that biogas slurry can overflow from the discharge port to the water pressure room. There is a communication hole in the lower part between the water pressure room and the control pool, and a floating lifting hose is installed at the opening of the lower communication hole in the control pool, and the other end of the floating lifting hose can be lifted and floated freely in one side of the control pool. The port floats on the water surface, so that the biogas slurry can only flow into the control tank from the hydraulic room, and the biogas slurry in the control tank cannot return to the hydraulic room. There is a communication hole at the lower part between the control pond and the feed inlet, so that the biogas slurry flows from the control pond into the feed inlet or the feed inlet flows into the control pond.

The utility model has the advantages of simplicity, reliability, low cost, high efficiency, smooth operation, no need for artificial circulation of biogas slurry, low labor intensity, and is widely applicable to various biogas tanks and various anaerobic devices.

Description of drawings

Fig. 1 is the structural schematic diagram of prior art traditional hydraulic type biogas digester;

Fig. 2 is the structural schematic diagram of the automatic circulation biogas digester of the utility model;

FIG. 3 is a schematic top view of FIG. 2 .

In each figure, 1-fermentation room; 2-feed inlet; 3-feed outlet; 4-water pressure room; 5-movable cover; 6-air duct; 7-control tank; 8-floating lifting hose; 9-overflow port; 10-communication hole; 11-communication hole; 12-gas storage room.

Detailed ways

Combined with Figure 2 and Figure 3, the implementation process of automatic circulation is described: when the fermentation room (1) produces gas normally, the biogas rises to the gas storage room (12), and the feed liquid is squeezed out of the feed port (2) and the discharge port (3 ), the liquid level rises synchronously, when the liquid level of the discharge port (3) rises to the overflow port (9), the biogas slurry enters the water pressure room (4) from the overflow port (9), and the feed port (2) The feed liquid rises at the same time, passes through the communication hole (11), (the grid blocks the feed inlet grass), enters the control pool (7), and the rising liquid level floats one end of the floating lifting hose (8), and the feed inlet ( 2), although the control tank (7), water pressure room (4) and the liquid level of the discharge port (3) are synchronous, because of the floating effect of the lifting hose (8) in the control tank (7), the rising liquid level only It can flow into the water pressure room (4) from the discharge port (3) overflow port (9), but cannot flow into the water pressure room (4) from the feed port (2), so the biogas slurry in the biogas tank can only Directly flow into the water pressure room (4) from the discharge port (3). Here the key function is that one end of the floating lifting hose (8) is built on the bottom of the partition wall between the control pool (7) and the water pressure (4), and the other end is bound with floating plastic foam and plastic balls (such as table tennis balls). Together, during the operation of the biogas digester, the liquid level rises, and one end of the floating lifting hose (8) is floated, so that the feed liquid at the feed inlet (2) cannot enter the water pressure room (4), and when the liquid level drops, the floating lifting hose (8) The hose (8) descends, and the water in the water pressure room (4) flows directionally to the feed inlet (2) through the descending floating lifting hose (8). Because the overflow port (9) is at a high position, the water pressure room ( 4) The water in the water is blocked by the partition wall, so it is impossible to flow back to the discharge port (3), and it can only flow in a directional manner. A biogas digester is formed to produce gas, and the biogas slurry rising from the discharge port (3) flows into the water pressure room (4) through the overflow port (9); with gas, the liquid level drops, and the water in the water pressure room (4) passes through The descending floating lifting hose (8) flows into the feed inlet (2) through the control pool (7). With the continuous conversion of gas production and gas consumption, the flow is always directional, and the feed liquid at the feed inlet (2) is diluted and brought into the fermentation room (1), which is automatically circulated and operates efficiently.

Claims (1)

1. An automatic circulation biogas digester, which consists of a fermentation room (1), a gas storage room (12), a material inlet (2), a material outlet (3), a water pressure room (4), and a movable cover (5) , an air duct (6), and a control pool (7), and is characterized in that an overflow port (9) channel is provided on the upper part between the discharge port (3) and the water pressure room (4), and the water pressure room (4) There is a communication hole (10) in the lower part between the control tank (7), and a floating lifting hose (8) is installed at the opening of the lower communication hole (10) in the control tank (7), and the floating lifting hose (8) The other end floats freely on the liquid state in the control pool (7), and a communication hole (11) is provided at the lower part between the control pool (7) and the feed port (2).

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