CN204417501U - A kind of propelling stirring-type backflow anaerobic fermentation tank - Google Patents

Abstract

The utility model discloses a kind of propelling stirring-type backflow anaerobic fermentation tank, belong to field of fermentation equipment, described propelling stirring-type backflow anaerobic fermentation tank comprises: tank body, drive unit, natural pond liquid spray equipment, natural pond liquid reflux, whipping appts, venting port; Adopt the mechanical type of paddle paddle to stir the radial forces formed, there is Strong shear effect, impel Large stone solid substance disperse and fully mix with natural pond liquid, avoid material to produce encrustation phenomena; The natural pond liquid extraction tube of tank base forces the liquid of tank interior to produce the flowing of circumferential direction under the decimate action of spiral pump, forms liquid circulation and stirs; Adopt the axial force that pusher paddle is formed, shearing action is little, avoid the injury to methanobacteria, the mechanical type of paddle paddle stirs and to extract the liquid return that natural pond liquid formed with natural pond liquid extraction tube and stir acting in conjunction, forms abundant mix and blend, improves mixing effect, consumed power is stirred in effective reduction, the utility model structure is simple, easy to operate, is beneficial to popularization.

Description

A propelling stirring type reflux anaerobic fermentation tank

technical field

The utility model discloses a propulsion and stirring type reflux anaerobic fermentation tank, which belongs to the field of fermentation equipment.

Background technique

Anaerobic fermentation tank is an important equipment for biogas production. The anaerobic fermentation tank commonly used in the prior art adopts multi-layer mechanical stirring, which consumes a lot of power. In the anaerobic fermentation tank with straw as the main fermentation raw material, large grain The large diameter solid matter is mainly concentrated in the upper part of the fermenter tank body, and the middle and lower parts of the fermenter tank body are a mixture of small particle size solid matter and liquid, so it is difficult to fully stir, and the methane bacteria are mainly concentrated in the middle and lower part of the tank body. The multi-layer mechanical stirring of the technology is easy to cause damage to the methane bacteria in the middle and lower parts of the fermentation tank and affect the fermentation effect.

Since the methane bacteria are mainly concentrated in the middle and lower part of the fermenter, it is difficult to stir the methane bacteria in the middle and lower part of the fermenter to the upper part of the fermenter by ordinary mechanical stirring, so that the fermentation in the upper part of the fermenter is incomplete, the methane gas produced is less, and it is harmful to raw materials. caused waste.

Contents of the invention

In order to overcome the problems existing in the prior art, the utility model provides a novel angle reflux mixing and agitating anaerobic fermentation tank, which adopts the radial force formed by the mechanical agitation of paddle-type agitating blades, and has a strong shearing effect, Promote the dispersion of large particle size solids and fully mix with the biogas slurry to avoid crusting of the material; the biogas slurry extraction pipe at the bottom of the tank forces the liquid inside the tank to flow in a circumferential direction under the action of the screw pump to form a liquid Circular stirring; the axial force formed by the propulsion stirring blade is used, the shearing effect is small, and the damage to the methane bacteria is avoided. The mechanical stirring of the paddle stirring blade is combined with the liquid return stirring formed by the biogas slurry extraction pipe The utility model has the advantages of simple structure, convenient operation and favorable popularization.

In order to achieve the above object, the utility model provides the following technical solutions:

A propulsion-stirring type reflux anaerobic fermenter, the propulsion-stirrer reflux anaerobic fermenter comprises a driving device 1, a biogas slurry spray port 2, a tank body 3, a biogas slurry return pipe 4, paddle-type stirring blades 5, Stirring shaft 6, discharge port 7, screw pump 8, biogas slurry extraction pipe 9, propulsion type stirring blade 10, feed port 11, heating coil 12, sampling port 13, exhaust port 14, gas cabinet 15; The driving device 1 is arranged directly above the tank body 3, the stirring shaft 6 is connected to the driving device 1, the top of the stirring shaft 6 is provided with a paddle type stirring blade 5, and the bottom part of the stirring shaft 6 is provided with a propulsion type stirring blade 10, the tank body 3 There is an exhaust port 14 on the top, and the exhaust port 14 communicates with the gas cabinet 15, and the other side of the tank body 3 is provided with a biogas slurry spray port 2, which is connected to the biogas slurry return pipe 4, and the biogas slurry The return pipe 4 is connected with the screw pump 8, the bottom of the tank body 3 is provided with a biogas slurry extraction pipe 9, the biogas slurry extraction tube 9 is connected with the screw pump 8, the lower part of the tank body 3 is provided with a feed port 11, and the upper part of the tank body 3 is provided with a There is a discharge port 7 , a heating coil 12 is provided on the inner wall of the tank body 3 , and a sampling port 13 is arranged in the middle of the tank body 3 .

The biogas slurry extraction pipe 9 arranged at the bottom of the tank body 1 forms an angle of 10° to 15° with the horizontal plane, and an angle of 22° to 25° with the center of the tank body 1 .

The beneficial effects of the utility model: the radial force formed by the mechanical stirring of the paddle stirring blade has a strong shearing effect, which promotes the dispersion of large particle diameter solids and fully mixes with the biogas slurry, and avoids the phenomenon of crusting of materials; Under the pumping effect of the screw pump, the biogas slurry extraction pipe at the bottom of the tank forces the liquid inside the tank to flow in the circumferential direction, forming liquid circulation and stirring; the axial force formed by the propulsive stirring blade is adopted, and the shearing effect is small, avoiding In order to avoid damage to methane bacteria, the mechanical stirring of the paddle-type stirring blade and the liquid reflux stirring formed by the biogas slurry extraction pipe work together to form sufficient mixing and stirring, which improves the stirring effect and effectively reduces the power consumption of stirring. The utility model The structure is simple, the operation is convenient, and it is beneficial to popularization.

Description of drawings

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

Fig. 2 is the structural schematic diagram of the top view part of the utility model;

In the figure, 1-driving device, 2-biogas slurry spray port, 3-tank, 4-biogas slurry return pipe, 5-paddle stirring blade, 6-stirring shaft, 7-outlet, 8-screw pump , 9-biogas slurry extraction pipe, 10-propelled stirring blade, 11-feed inlet, 12-heating coil, 13-sampling port, 14-exhaust port, 15-gas cabinet.

Detailed ways

In order to make the purpose, technical solutions and beneficial effects of the utility model clearer, the preferred embodiments of the utility model will be described in detail below in conjunction with the accompanying drawings, and the utility model will be further explained to facilitate the understanding of technical personnel.

As shown in Figure 1, a push-stirring type reflux anaerobic fermentation tank, said push-stirring type reflux anaerobic fermentation tank includes: a driving device 1, a biogas slurry spray port 2, a tank body 3, and a biogas slurry return pipe 4 , Paddle type stirring blade 5, stirring shaft 6, discharge port 7, screw pump 8, biogas slurry extraction pipe 9, propulsion type stirring blade 10, feed port 11, heating coil 12, sampling port 13, exhaust port 14 , gas cabinet 15;

The driving device 1 is arranged directly above the tank body 3, the stirring shaft 6 is connected to the driving device 1, the top of the stirring shaft 6 is provided with a paddle type stirring blade 5, and the bottom part of the stirring shaft 6 is provided with a propulsion type stirring blade 10; The radial force formed by the mechanical stirring of the paddle stirring blade has a strong shearing effect, which promotes the dispersion of large particle size solids and fully mixes with the biogas slurry, and avoids the phenomenon of crusting of the material; Axial force, small shearing effect, avoiding damage to methanogens;

The top of the tank body 3 is provided with an exhaust port 14, the exhaust port 14 communicates with the gas cabinet 15, and the other side of the tank body 3 is provided with a biogas slurry spray port 2, and the biogas slurry spray port 2 is connected to the biogas slurry return pipe 4 are connected, the biogas slurry return pipe 4 is connected with the screw pump 8, the bottom of the tank body 3 is provided with a biogas slurry extraction pipe 9, and the biogas slurry extraction pipe 9 is connected with the screw pump 8; Under the action of extraction, the liquid inside the tank is forced to flow in the circumferential direction, forming a liquid circulation stirring. The mechanical stirring of the paddle type stirring blade and the liquid reflux stirring formed by the biogas slurry extraction pipe to extract the biogas slurry work together to form sufficient mixing and stirring, improving Improve the stirring effect and effectively reduce the power consumption of stirring;

Working process of the present utility model:

The straw raw material enters the tank body 3 from the feed port 11, and is fermented with the methane bacteria in the tank body 3 at a certain temperature to produce methane gas. Type stirring blade 5 crushes the raw material of straw, and at the same time uses screw pump 8 to extract the biogas slurry in the lower part of the tank body 3 through the biogas slurry extraction pipe 9, enters the biogas slurry return pipe 4, passes through the biogas slurry return pipe 4 The biogas slurry spray port 2 sprays the biogas slurry on the upper part of the tank body 3, so that the upper material can also undergo fermentation reaction with the methane bacteria, and is continuously extracted and sprayed to form a ring-shaped liquid reflux stirring, and the fermentation process produces The methane gas is discharged through the exhaust port 14 arranged on the upper part of the tank body and collected through the gas cabinet 15, and the material after the reaction is completed is discharged through the discharge port 7.

The utility model adopts the radial force formed by the mechanical stirring of the paddle-type stirring blades, which has a strong shearing effect, promotes the dispersion of large-diameter solids and fully mixes with the biogas slurry, and avoids the phenomenon of crusting of materials; the bottom of the tank body Under the pumping action of the screw pump, the biogas slurry extraction pipe forces the liquid inside the tank to flow in the circumferential direction, forming liquid circulation and stirring; the axial force formed by the propulsion stirring blade is used, and the shearing effect is small, which avoids the impact on the methane bacteria. damage, the mechanical stirring of the paddle stirring blades and the liquid reflux stirring formed by the biogas slurry extraction pipe extracting the biogas slurry work together to form sufficient mixing and stirring, which improves the stirring effect and effectively reduces the power consumption of the stirring. The utility model has a simple structure and is easy to operate. Convenient and conducive to promotion.

Finally, it is noted that the above preferred embodiments are only used to illustrate the technical solutions of the present utility model without limitation. Although the utility model has been described in detail through the above preferred embodiments, those skilled in the art should understand that it can be described in the form Various changes can be made in the above and in the details without departing from the scope defined by the claims of the present invention.

Claims (1)

1. advance a stirring-type backflow anaerobic fermentation tank, it is characterized in that: described propelling stirring-type backflow anaerobic fermentation tank comprises drive unit, natural pond liquid mouth spray, tank body, natural pond liquid return line, paddle paddle, stir shaft, discharge port, spiral pump, natural pond liquid extraction tube, pusher paddle, opening for feed, heating coil, thief hole, venting port, gas holder, described drive unit is arranged on directly over tank body, stir shaft is connected with drive unit, the top of stir shaft is provided with paddle paddle, the bottom of stir shaft is provided with pusher paddle, tank body top is provided with venting port, venting port communicates with gas holder, tank body opposite side is provided with natural pond liquid mouth spray, natural pond liquid mouth spray is connected with natural pond liquid return line, natural pond liquid return line is connected with spiral pump, the bottom of tank body is provided with natural pond liquid extraction tube, natural pond liquid extraction tube is connected with spiral pump, the bottom of tank body is provided with opening for feed, tank body top is provided with discharge port, inner tank wall is provided with heating coil, thief hole is arranged on the middle part of tank body, the described natural pond liquid extraction tube being arranged at tank base becomes 10 ° to 15 ° angles with horizontal plane, 22 ° to 25 ° angles are become with tank body center.