CN201062268Y - Methane tank feed-liquid automatic circulating device - Google Patents

Abstract

The utility model discloses an automatic circulation device for biogas tank feed liquid, which is provided with a fermentation tank (4), a sealed tank cover (2), a material inlet and outlet pipe (1), and an air outlet pipe (3), and is characterized in that it is also provided with A liquid replenishment tank (5), which is provided with an overflow pipe (6), the upper nozzle of the overflow pipe is provided with a filter cover (6.1), and a float (6.2) is arranged in the pipe, and the lower nozzle is connected with the fermentation There is also a return pipe (7) at the bottom of the replenishment tank, and a return valve (7.1) is provided at the upper nozzle of the return pipe, and the valve is connected with the float by a pull wire (6.3). The lower port of the return pipe communicates with the U-shaped pipe (9) in the fermenter and the slag flushing pipe (8) extending into the bottom of the fermenter through a three-way valve (7.2). The U-shaped pipe is soft The pipe body is provided with a float (9.1) on its upper opening. The utility model is suitable for biogas production and has the characteristics of continuous biogas production, high efficiency, easy maintenance and safety.

Description

Biogas digester feed liquid automatic circulation device

technical field

The utility model belongs to a biogas pond, in particular to a biogas pond equipped with a circulating device which can automatically overflow and automatically supplement the material liquid.

Background technique

Biogas technology is developing very fast in my country, and a large number of biogas technologies and products have emerged as the times require. Among them, there are many excellent technologies and products, which have produced huge economic and social benefits. However, among them, there are not many technologies that can better solve the excessive pressure in the biogas digester or the tank, automatically relieve the pressure, and effectively solve the incrustation on the surface of the feed liquid in the tank and the hardening of the tank bottom. Therefore, it is necessary to propose a biogas digester technology with further improved structure to solve the above problems.

Utility model content

The purpose of the utility model is to solve the above-mentioned technical problems and propose an automatic circulation device for biogas tank feed liquid. The device can automatically adjust the pressure in the biogas tank, and can overcome the problems of incrustation on the surface of the feed liquid in the tank and hardening at the bottom.

The purpose of this utility model is achieved through the following technical proposals: an automatic biogas tank feed liquid circulation device is provided with a fermentation tank, a sealed tank cover, an inlet and outlet pipe, and an air outlet pipe. It is characterized in that: a liquid replenishment tank is also provided. There is an overflow pipe in the liquid replenishment tank, the upper nozzle of the overflow pipe is provided with a filter cover, and a float is arranged in the pipe, and the lower nozzle is connected with the fermentation tank; there is also a return pipe at the bottom of the liquid replenishment tank. The upper nozzle of the water pipe is provided with a return valve, which is connected with the float by a pull wire, and the lower outlet of the return pipe extends into the fermenter through a three-way valve, the U-shaped pipe and the lower nozzle in the fermenter. The slag flushing pipe at the bottom is connected, and the U-shaped pipe is a soft pipe body, and a float is installed on its upper opening.

Because the utility model is equipped with an overflow pipe, when the pressure in the biogas tank is too high, the feed liquid is pressed into the overflow pipe and flows into the water supply tank through the filter cover at the mouth of the pipe, thereby reducing the pressure in the tank; when the biogas is discharged from the tank, the pressure When it is reduced, due to the height setting of the overflow pipe, the feed liquid and water in the make-up water tank cannot flow back, so a pressure difference is generated between the make-up water tank and the biogas tank; when the feed liquid in the tank is consumed to a certain extent, the upper When the level drops to a certain level, the floater will follow and drop, and pull up the return valve through the pull wire, so that the feed liquid and water in the water supply tank will pass through the return pipe, the three-way valve, the slag flushing pipe and the U-shaped pipe from the The bottom of the tank and the surface of the material liquid enter the tank. In this way, on the one hand, the tank is replenished with water, and because of a certain pressure, the crust on the surface of the material liquid and the hardening and softening of the tank bottom can be eliminated. The utility model has the advantages of novel, reasonable and applicable structure, easy maintenance, can prevent the danger of overpressure in the biogas tank, can automatically replenish water, automatically eliminate crusts and hardening, and has the advantages of high gas production efficiency.

Description of drawings

Fig. 1 is a structural representation of the utility model.

Detailed ways

Below in conjunction with accompanying drawing and embodiment, the utility model is further described: embodiment: biogas digester feed liquid automatic circulation device, is provided with fermenter 4, sealed tank lid 2, inlet and outlet material pipe 1, outlet pipe 3, is characterized in that: Also be provided with a replenishment tank 5, in this replenishment tank is provided with an overflow pipe 6, the upper mouth of this overflow pipe is provided with a filter cover 6.1, is provided with a floater 6.2 in the pipe, and the lower mouth of the pipe communicates with the inside of the fermenter; A water return pipe 7 is also provided at the bottom of the liquid replenishment tank, and a water return valve 7.1 is provided on the upper nozzle of the water return pipe. It communicates with the U-shaped pipe 9 in the fermenter and the slag flushing pipe 8 that the lower nozzle extends into the bottom of the fermenter. The U-shaped pipe is a soft pipe body, and a float 9.1 is installed on its upper opening.

This embodiment is tested in practice, and the effect is very good, easy to use, safe, continuous gas production, and easy to maintain.

Claims (1)

1. An automatic biogas digester feed liquid circulation device, which is provided with a fermentation tank (4), a sealed tank cover (2), an inlet and outlet pipe (1), and an air outlet pipe (3), and is characterized in that: a liquid replenishment tank is also provided (5), there is an overflow pipe (6) in the replenishment tank, the upper mouth of the overflow pipe is provided with a filter cover (6.1), the pipe is provided with a float (6.2), and the lower mouth of the pipe is connected with the inside of the fermenter ;A return pipe (7) is also provided at the bottom of the replenishment tank, and the upper nozzle of the return pipe is provided with a return valve (7.1), which is connected with the float by a stay wire (6.3). The lower port communicates with the U-shaped pipe (9) in the fermenter and the slag flushing pipe (8) extending into the bottom of the fermenter through a three-way valve (7.2). The U-shaped pipe is a soft pipe body. A float (9.1) is housed in its upper mouth.

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