CN204342781U - A kind of Novel angle recirculate mixing stirs and filtering type fermentor tank - Google Patents

Abstract

The utility model discloses a novel angle reflux mixing and stirring and filtering fermentation tank, which belongs to the field of fermentation equipment, and the equipment includes: a tank body, a stirring device, a driving device, a filtering device, a biogas slurry reflux device; a paddle-type stirring blade Radial force is generated, with strong shearing effect, which promotes the dispersion of large particle size solids and fully mixes with the biogas slurry to avoid crusting; the bottom biogas slurry is pumped by the backflow screw pump to force the liquid in the tank to flow in the circumferential direction, The liquid stirring is formed, the shearing effect is small, and the damage to the methane bacteria is avoided. The mechanical stirring and crushing of the material and the liquid reflux formed by extracting the biogas slurry and spraying work together to fully mix the biogas slurry and the material in the fermentation tank, and improve the mixing effect. The power consumption of stirring is reduced, and the tank is equipped with two discharge ports, which can drain the biogas slurry and scum in the fermentation tank, and improve the fermentation efficiency. The filter device can save fermentation raw materials and further reduce the cost. The utility model has a simple structure and is easy to operate.

Description

A new type of angle reflux mixing stirring and filtering fermenter

technical field

The utility model discloses a novel angle reflux mixing stirring and filtering fermentation tank, belonging to the field of fermentation equipment.

Background technique

The fermenters commonly used in the prior art mostly use multi-layer mechanical stirring, which consumes a lot of power. In the anaerobic fermenter with straw as the main fermentation raw material, the large particle size solid matter is mainly concentrated in the fermenter body. In the upper part, the methanogens are mainly concentrated in the middle and lower part of the fermenter.

Ordinary mechanical stirring is difficult to stir the methane bacteria in the middle and lower parts to the upper part of the fermenter, and multi-layer mechanical stirring is easy to cause damage to the methane bacteria in the middle and lower parts of the fermenter.

In the prior art, the fermenter is equipped with a discharge port, and the unreacted or incompletely reacted straw raw materials in the fermenter float on the liquid surface, and the discharge port at the lower part can only drain the internal biogas slurry. As the liquid level drops, the floating straw raw materials remain in the fermenter, which cannot be discharged in time and effectively, reducing the efficiency of fermentation. After the end, the biogas slurry is directly discharged, but during the fermentation process, the raw materials floating on the upper part and large pieces have not completely reacted, and the raw materials are wasted after being directly discharged.

Contents of the invention

In order to overcome the problems existing in the prior art, the utility model provides a novel angle reflux mixing stirring and filtering fermenter. The paddle-type stirring blades provided can generate radial force and have a strong shearing effect to promote floating in the The large-size solids in the upper layer are dispersed and fully mixed with the biogas slurry to avoid crusting; the bottom biogas slurry is pumped by the backflow screw pump to force the liquid in the tank to flow in the circumferential direction, forming liquid stirring, and the shearing effect is small. Methane bacteria damage, mechanical stirring and crushing of materials and liquid backflow formed by extracting biogas slurry spraying work together to fully mix the biogas slurry and materials in the fermentation tank, improve the stirring effect, and reduce the power consumption of stirring. The tank is equipped with two rows The feed port can drain the biogas slurry and scum in the fermentation tank to improve the fermentation efficiency. The filter device can save the fermentation raw materials and further reduce the cost. The utility model has a simple structure and is easy to operate.

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

A new angle reflux mixing and filtering fermenter, the equipment includes a stirring shaft 1, an exhaust port 2, a stirring blade 3, an upper outlet valve 4, an upper outlet screw pump 5, an upper outlet pipe 6, and a sieve plate 7 , drain pipe 8, filter 9, cleaning port 10, three-way valve 11, lower outlet screw pump 12, lower outlet valve 13, lower outlet pipe 14, biogas slurry extraction pipe 15, feed port 16, backflow screw pump 17. Heating coil 18, tank body 19, biogas slurry spray port 20, biogas slurry return pipe 21, driving device 22; connection, the stirring shaft 1 is provided with a stirring blade 3, the lower part of the tank body 19 is provided with a feed port 16 and a lower outlet pipe 14, the upper part of the tank body 19 is provided with an upper outlet pipe 6, and the upper outlet pipe 6 is provided with an upper outlet Valve 4 and the upper outlet screw pump 5, the upper outlet pipe 6 is connected to the lower side of the filter 9, the upper part of the filter 9 is provided with a drain pipe 8, the sieve plate 7 is arranged in the filter 9, and the side wall of the filter 9 The lower part is provided with a cleaning port 10, the drain pipe 8 is connected with the three-way valve 11, the lower outlet pipe 14 is provided with the lower outlet screw pump 12 and the lower outlet valve 13, the lower outlet pipe 14 is connected with the three-way valve 11, and the tank body The lower part of 19 is provided with a biogas slurry extraction pipe 15, one end of the backflow screw pump 17 is connected to the biogas slurry extraction pipe 15, and the other end of the backflow screw pump 17 is connected to the biogas slurry return pipe 21, and the biogas slurry return pipe 21 extends to the upper part of the tank body 19 The biogas slurry spray port 20 is set inside the tank body 19, the biogas slurry spray port 20 is connected to the biogas slurry return pipe 21, the inner wall of the tank body 19 is provided with a heating coil 18, and the exhaust port 2 is set above the tank body 19 .

The stirring blade 3 is a paddle type stirring blade.

The sieve plate 7 is provided with filter holes.

Beneficial effects of the utility model: paddle-type stirring blades generate radial force and have strong shearing effect, which promotes the dispersion of large particle size solids and fully mixes with the biogas slurry to avoid crusting; the biogas slurry at the bottom is pumped by the backflow screw pump The liquid in the tank is forced to flow in the circumferential direction to form liquid stirring, the shearing effect is small, and the damage to the methane bacteria is avoided. The mechanical stirring and crushing of the material and the liquid reflux formed by the biogas slurry spraying work together to make the fermentation tank The biogas slurry is fully mixed with the material to improve the stirring effect and reduce the power consumption of stirring. The tank body is equipped with two discharge ports, which can drain the biogas slurry and scum in the fermentation tank and improve the fermentation efficiency. The filter device can save fermentation raw materials and further reduce cost, the utility model is simple in structure, easy to operate.

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-stirring shaft, 2-exhaust port, 3-stirring blade, 4-upper outlet valve, 5-upper outlet screw pump, 6-upper outlet pipe, 7-sieve plate, 8-drain pipe, 9 -filter, 10-cleaning port, 11-three-way valve, 12-lower outlet screw pump, 13-lower outlet valve, 14-lower outlet pipe, 15-biogas slurry extraction pipe, 16-feed inlet, 17- Return screw pump, 18-heating coil, 19-tank, 20-biogas slurry spray port, 21-biogas slurry return pipe, 22-drive device.

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 new angle reflux mixing and filtering fermenter, the equipment includes: stirring shaft 1, exhaust port 2, stirring blade 3, upper outlet valve 4, upper outlet screw pump 5, upper outlet Pipe 6, sieve plate 7, liquid discharge pipe 8, filter 9, cleaning port 10, three-way valve 11, lower outlet screw pump 12, lower outlet valve 13, lower outlet pipe 14, biogas slurry extraction pipe 15, feed Port 16, return screw pump 17, heating coil 18, tank body 19, biogas slurry spray port 20, biogas slurry return pipe 21, drive device 22;

The drive device 22 is arranged directly above the tank body 19, the drive device 22 is connected to the stirring shaft 1, the stirring shaft 1 is provided with a stirring blade 3, and the bottom of the tank body 19 is provided with a feed port 16 and a lower outlet pipe 14 ;The mechanical agitation of paddle-type stirring blades produces radial force, which has strong shearing effect, promotes the dispersion of large particle size solids and fully mixes with biogas slurry, and avoids crusting;

The upper part of the tank body 19 is provided with an upper outlet pipe 6, the upper outlet pipe 6 is provided with an upper outlet valve 4 and an upper outlet screw pump 5, the upper outlet pipe 6 is connected with the lower side of the filter 9, and the upper part of the filter 9 A drain pipe 8 is provided, and the sieve plate 7 is arranged in the filter 9. The lower part of the side wall of the filter 9 is provided with a cleaning port 10, the drain pipe 8 is connected with the three-way valve 11, and the lower outlet pipe 14 is provided with a lower The outlet screw pump 12 is connected to the lower outlet valve 13, and the lower outlet pipe 14 is connected to the three-way valve 11; the tank body 19 is provided with two discharge ports, which can effectively drain the biogas slurry and scum in the fermentation tank and improve the fermentation process. High efficiency, the filter device can effectively save fermentation raw materials and further reduce costs.

The lower part of the tank body 19 is provided with a biogas slurry extraction pipe 15, one end of the return screw pump 17 is connected to the biogas slurry extraction pipe 15, and the other end of the return screw pump 17 is connected to the biogas slurry return pipe 21, and the biogas slurry return pipe 21 extends to the tank On the upper part of the body 19, the biogas slurry spray port 20 is arranged inside the tank body 19, and the biogas slurry spray port 20 is connected with the biogas slurry return pipe 21. The inner wall of the tank body 19 is provided with a heating coil 18, and the exhaust port 2 is set in the tank body. Above the body 19; the biogas slurry at the bottom forces the liquid inside the tank body 19 to flow in the circumferential direction under the extraction action of the backflow screw pump 17, forming liquid stirring, and the strong shearing effect is small, which avoids the damage to the methanogen. The combined effect of the type stirring and crushing material and the liquid reflux formed by extracting the biogas slurry and spraying can fully mix the biogas slurry and the material in the fermentation tank, improve the stirring effect, and reduce the power consumption of stirring.

Working process of the present utility model:

Straw raw materials enter the tank body 19 through the feed port 16, and ferment with the methane bacteria in the tank body 19 at a certain temperature to produce methane gas. Leaf 3 crushes the raw material of straw, and at the same time uses the return screw pump 17 to extract the biogas slurry from the lower part of the tank body 19 through the biogas slurry extraction pipe 15, enters the biogas slurry return pipe 21, and passes through the biogas slurry installed on the biogas slurry return pipe 21 The spray port 20 sprays the biogas slurry on the upper part of the tank body 19, 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 methane produced during the fermentation process The gas is discharged and collected through the exhaust port 2 arranged on the upper part of the tank body 19. After the reaction is completed, the biogas slurry is discharged through the lower outlet pipe 14 arranged at the lower part of the tank body 19 and the lower outlet screw pump 12 through the three-way valve 11. The scum is discharged into the filter 9 through the upper outlet valve 4 and the upper outlet screw pump 5 arranged on the upper part of the tank body 19. After being filtered by the sieve plate 7, the biogas slurry enters the upper part of the filter 9 and passes through the drain pipe 8. And the three-way valve 11 is discharged, and the scum remains at the bottom of the filter 9, and the staff regularly opens the cleaning port 10 to clean the bottom of the filter 9.

The utility model adopts the paddle-type stirring blades to generate radial force, which has a strong shearing effect, promotes the dispersion of large-diameter solids and fully mixes with the biogas slurry, and avoids crusting; the bottom biogas slurry is forced by the backflow screw pump. The liquid in the tank produces a flow in the circumferential direction, forming liquid agitation, with small shearing effect and avoiding damage to the methane bacteria. The mechanical stirring and crushing of the material and the liquid reflux formed by extracting the biogas slurry and spraying together make the biogas in the fermentation tank The liquid and the material are fully mixed to improve the stirring effect and reduce the power consumption of stirring. The tank body is equipped with two discharge ports, which can drain the biogas slurry and scum in the fermentation tank and improve the fermentation efficiency. The filter device can save fermentation raw materials and further reduce costs. , The utility model has the advantages of simple structure and convenient operation.

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 (3)

1. Novel angle recirculate mixing stirs and a filtering type fermentor tank, it is characterized in that: described fermenter equipment comprises stir shaft, venting port, paddle, upper outlet valve, upper outlet spiral pump, upper outlet pipe, sieve plate, liquid discharge pipe, strainer, soil cleaning port, T-valve, lower outlet screw pump, lower outlet valve, lower outlet pipe, natural pond liquid extraction tube, opening for feed, backflow spiral pump, heating coil, tank body, natural pond liquid mouth spray, natural pond liquid return line, drive unit, described drive unit is arranged on directly over tank body, drive unit is connected with stir shaft, stir shaft is provided with paddle, the bottom of tank body is provided with opening for feed and lower outlet pipe, the top of tank body is provided with upper outlet pipe, upper outlet pipe is provided with upper outlet valve and upper outlet spiral pump, upper outlet pipe is connected with the downside of strainer, the top of strainer is provided with liquid discharge pipe, sieve plate is arranged in strainer, the lower sidewall of strainer is provided with soil cleaning port, liquid discharge pipe is connected with T-valve, lower outlet pipe is provided with lower outlet screw pump and lower outlet valve, lower outlet pipe is connected with T-valve, the bottom of tank body is provided with natural pond liquid extraction tube, backflow spiral pump one end is connected with natural pond liquid extraction tube, the backflow spiral pump the other end is connected with natural pond liquid return line, natural pond liquid return line extends to the top of tank body, natural pond liquid mouth spray is arranged on tank interior, natural pond liquid mouth spray is connected with natural pond liquid return line, inner tank wall is provided with heating coil, venting port is arranged on the top of tank body, the natural pond liquid extraction opening being arranged at tank base becomes 10 ° to 15 ° angles with horizontal plane, 22 ° to 25 ° angles are become with tank body center.

2. a kind of Novel angle recirculate mixing according to claim 1 stirs and filtering type fermentor tank, it is characterized in that: described paddle is paddle paddle.

3. a kind of Novel angle recirculate mixing according to claim 1 stirs and filtering type fermentor tank, it is characterized in that: described sieve plate is provided with filter pore.