CN201245652Y - Water pressure type slag liquid automatic circulation methane tank - Google Patents

Abstract

The utility model relates to a water pressure type slag liquid automatic circulation methane pool. The biogas digester includes a feed inlet, a feed pipe, a fermentation tank, a movable cover, an air guide pipe, and a hydraulic tank. A discharge pipe is connected to the bottom of the fermentation tank, and the upper end of the discharge pipe is connected to the hydraulic tank. , A one-way valve is provided on the discharge pipe, and a return pipe is connected between the fermentation tank and the hydraulic tank, the upper end of the return pipe is located in the upper air chamber in the fermentation tank, and the lower end is located at the bottom of the hydraulic tank. The utility model has the advantages that the biogas slurry and biogas residue liquid in the hydraulic tank flow into the fermentation tank from the upper air chamber of the fermentation tank through the return pipe, and the biogas slurry undergoes repeated cycle fermentation for many times in this way, and participates in the re-fermentation and decomposition of the floating water fermentation material. The fermentation and decomposition of the floating water fermentation material can be fully carried out without crusting, which not only increases the effect of gas production, but also achieves the purpose of breaking the shell through circulation.

Description

A hydraulic slag liquid automatic circulation biogas digester

technical field

The utility model relates to a device capable of producing gas fuel, in particular to a water pressure type slag liquid automatic circulation methane pool.

technical background

At present, the household hydraulic biogas digester is mainly composed of a feed inlet, a feed pipe, a fermentation tank, a discharge pipe, a movable cover, an air guide pipe, and a hydraulic tank. The feed pipe and the discharge pipe are connected with the fermentation tank. They are respectively located on both sides of the fermentation tank, one end of the discharge pipe is also connected to the hydraulic tank on one side of the fermentation tank, and the air guide tube is located on the movable cover of the fermentation tank. This traditional biogas digester has the following disadvantages: first, the biogas slurry does not flow, the strains are unevenly distributed, and the gas production is low; second, the raw materials are unevenly distributed in the pond, and the fermentation effect is poor; Normal gas production; Fourth, slag is easy to settle at the bottom of the fermentation tank, and its long-term accumulation will affect the effective tank capacity.

Utility model content

The purpose of this utility model is to overcome the shortcomings of the above-mentioned prior art, and provide a kind of hydraulic type slag liquid automatic circulation with good fermentation effect, convenient slag discharge, high gas production rate and can automatically break the liquid surface encrustation Digester.

In order to accomplish the above-mentioned purpose, the technical solution provided by the utility model is. A hydraulic slag liquid automatic circulation biogas digester, including a feed inlet, a feed pipe, a fermentation tank, a movable cover, an air guide pipe, and a hydraulic tank, A discharge pipe is connected to the bottom of the fermentation tank, the upper end of the discharge pipe is connected to the hydraulic pool, a one-way valve is arranged on the discharge pipe, and a discharge pipe is connected between the fermentation tank and the hydraulic tank. A return pipe, the upper end of the return pipe is located in the upper air chamber in the fermentation tank, and the lower end is located in the bottom of the hydraulic tank.

It is also possible to connect a water-sealed pool at the bottom of the hydraulic pool, and a return pipe is connected between the fermentation tank and the water-sealed pool. The upper end of the return pipe is located in the upper air chamber in the fermentation tank. The lower end is located at the bottom of the water-sealed pool.

In order to ensure that the biogas in the air chamber does not overflow from the return pipe, the pressure of the water on the return pipe at one end of the hydraulic pool or water-sealed pool should be slightly greater than the pressure of the air chamber, so the upper plane of the hydraulic pool and the outlet should be higher than the upper plane of the movable cover.

The utility model has the advantages that: when gas is produced, the pressure of the air chamber will press the biogas slurry and biogas residue in the pool body into the hydraulic pool and the water seal pool through the discharge pipe; The one-way valve on the top is automatically closed, and the biogas slurry and biogas residue in the hydraulic tank flow into the fermentation tank from the upper air chamber of the fermentation tank through the return pipe. The biogas slurry in the fermentation tank can be circulated repeatedly inside, outside, up and down for use , the biogas slurry is fermented repeatedly in this way, and participates in the re-fermentation and decomposition of the floating water fermentation material, so that the fermentation and decomposition of the floating water fermentation material is sufficient, and it does not crust, which not only increases the effect of gas production, but also achieves the purpose of breaking the shell through circulation .

Description of drawings

The accompanying drawing is a schematic diagram of the structural principle of an embodiment of the utility model.

Detailed ways

As shown in FIG. 1 , an embodiment of the utility model includes a feed inlet 1 , a feed pipe 2 , a fermentation tank 3 , an air chamber 4 , a movable cover plate 11 , and an air duct 5 . The feed pipe 2 communicates with the fermentation tank 3 and is located on the left side of the fermentation tank. The hydraulic pool 6 is arranged on the right side of the fermentation tank 3, and the bottom of the hydraulic pool 6 is connected with a water seal pool 7, and the bottom surface of the water seal pool 7 has a certain slope. The hydraulic tank 6 communicates with the fermentation tank 3 through a discharge pipe 8 . When gas is produced, the pressure of the air chamber 4 pushes the biogas slurry and biogas residue in the tank body into the hydraulic tank 6 through the discharge pipe 8, and most of the slag coming in from the bottom of the fermentation tank 3 falls into the water-sealed tank 7; The upper part of the discharge pipe 8 is provided with a one-way valve 9, which prevents the feed liquid in the hydraulic tank from flowing back from the discharge pipe 8 to the fermentation tank 3. A return pipe 10 is connected between the fermentation room 3 and the water-sealed pool 7. The upper end of the return pipe 10 is located at the upper air chamber 4 in the fermentation tank 3. The nozzle at the upper end is an inclined plane, and the lower end is located at the bottom of the water-sealed pool 7. . When using gas, the biogas is discharged from the air guide pipe 5, the pressure of the air chamber 4 is reduced, and the biogas slurry and biogas residue liquid in the hydraulic tank 6 and the water-sealed tank 7 flow into the fermentation tank from the upper gas chamber 4 of the fermentation tank 3 through the return pipe 10, so Circulation, the light biogas slurry in the middle layer and the thick slag-containing biogas slurry in the bottom layer can be automatically mixed and stirred, and the raw materials and bacteria are evenly distributed. Due to the inflow of the material liquid, the crust on the liquid surface is automatically fermented and disintegrated. In order to ensure that the biogas in the air chamber 4 does not overflow from the return pipe 10, the water pressure on the return pipe 10 at the end of the water-sealed pool 7 is slightly greater than the pressure in the air chamber 4, so the water pressure pool 6 and the discharge port 1 The upper plane is higher than the upper plane of the movable cover 11 .

Claims (3)

1. A hydraulic type slag liquid automatic circulation biogas digester, comprising a feed inlet, a feed pipe, a fermentation tank, a movable cover, an air guide pipe, and a hydraulic tank, characterized in that: a bottom of the fermentation tank is connected Outlet pipe, the upper end of the outlet pipe is connected with the water pressure tank, a one-way valve is arranged on the outflow pipe, and a return pipe is connected between the fermentation tank and the water pressure tank, and the upper end of the backflow pipe is located in the fermentation tank The upper air chamber, the lower end is located at the bottom of the hydraulic pool. 2. A hydraulic slag liquid automatic circulation biogas digester according to claim 1, characterized in that a water-sealed pond is connected at the bottom of the hydraulic pond, and a water-sealed pond is connected between the fermentation pond and the water-sealed pond There is a return pipe, the upper end of the return pipe is located in the upper air chamber in the fermentation tank, the nozzle of the upper end is an inclined plane, and the lower end is located at the bottom of the water-sealed pool, and the bottom of the water-sealed pool is a slope. 3. A hydraulic slag-liquid automatic circulation biogas digester according to claim 1 or 2, characterized in that: the upper plane of the hydraulic tank and the outlet is higher than the upper plane of the movable cover.

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