CN204356330U - A kind of combined type fermentor tank - Google Patents

Abstract

The utility model discloses a compound fermentation tank, which belongs to the field of fermentation equipment. The equipment includes: a tank body, a stirring device, a driving device, a biogas slurry spraying device, a biogas slurry reflux device, and a biogas slurry filtering device; The paddle-type stirring blade produces radial force and has strong shearing effect, which promotes the dispersion of large particle size solids and fully mixes with the biogas slurry, while avoiding crusting. The push-type stirring blade produces axial force and small shear force , less damage to methane bacteria; the biogas slurry at the bottom of the tank is forced to flow in a circumferential direction under the action of the reflux screw pump, forming a circular liquid circulation stirring, mechanical stirring and liquid reflux stirring work together to improve the stirring effect and reduce Stirring consumes power, and two discharge ports are set to effectively drain the biogas slurry and scum in the fermentation tank to improve fermentation efficiency. The materials produced by the filter device can be fermented again, effectively saving fermentation raw materials and further reducing costs.

Description

A compound fermenter

technical field

The utility model discloses a composite fermentation tank, which belongs to the field of fermentation equipment.

Background technique

During the anaerobic fermentation process of organic matter, let the microorganisms and nutrients (organic matter) in the reactor be stirred and mixed, and fully contacted, which will speed up the material transfer and transformation process in the entire reactor. Practice has proved that by stirring, the organic matter can be fully decomposed and the gas production can be increased.

Methanogens are mainly concentrated in the middle and lower parts of the tank. According to the growth characteristics of methanogens, excessive stirring or continuous stirring is not conducive to the growth of methanogens, and it is easy to cause damage to the methanogens in the middle and lower parts of the fermenter and affect the effect of fermentation. .

In the anaerobic fermentation tank with straw as the main fermentation raw material, the large particle size solid matter is mainly concentrated in the upper part of the fermenter tank, and the middle and lower parts of the fermenter tank body are a mixture of small particle size solid matter and liquid. It is mainly concentrated in the middle and lower parts of the tank body. The multi-layer mechanical stirring in the prior art is likely to cause damage to the methane bacteria in the middle and lower parts of the fermenter and affect the fermentation effect.

In the prior art, the fermenter has only one 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 compound fermenter, which adopts the paddle-type stirring blades to generate radial force, has a strong shearing effect, and promotes the dispersion and integration of large particle size solids. The biogas slurry is fully mixed, and at the same time avoids the phenomenon of crusting. The push-type stirring blade produces axial force, the shear force is small, and the damage to the methane bacteria is small; the biogas slurry at the bottom of the tank is forced to produce a circumferential direction flow to form circular liquid circulation stirring, mechanical stirring and liquid reflux stirring work together to improve the stirring effect and reduce the power consumption of stirring. Fermentation efficiency, the material produced by the filter device can be fermented again, effectively saving fermentation raw materials and further reducing costs.

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

A composite fermentation tank, the equipment includes a drain pipe 1, a filter 2, a cleaning port 3, a three-way valve 4, a lower outlet screw pump 5, a lower outlet valve 6, a lower outlet pipe 7, a pusher type Stirring blade 8, biogas slurry extraction pipe 9, return screw pump 10, feed port 11, heating coil 12, biogas slurry spray port 13, biogas slurry return pipe 14, tank body 15, exhaust port 16, driving device 17 , stirring shaft 18, paddle type stirring blade 19, upper outlet valve 20, upper outlet screw pump 21, upper outlet pipe 22, sieve plate 23; Connected with the stirring shaft 18, the top of the stirring shaft 18 is provided with a paddle-type stirring blade 19, the bottom end of the stirring shaft 18 is provided with a propulsive stirring blade 8, and the lower part of one side of the tank body 15 is provided with a feed inlet 11, and the tank body 15 The upper part of the other side is provided with an upper outlet pipe 22, the upper outlet pipe 22 is provided with an upper outlet valve 20 and an upper outlet screw pump 21, the upper outlet pipe 22 is connected with the lower side of the filter 2, and the upper part of the filter 2 is provided with The drain pipe 1 and the sieve plate 23 are set in the filter 2, the lower part of the side wall of the filter 2 is provided with a cleaning port 3, the drain pipe 1 is connected with the three-way valve 4, and the lower part of the other side of the tank body 15 is provided with The lower outlet pipe 7 is provided with the lower outlet screw pump 5 and the lower outlet valve 6, the lower outlet pipe 7 is connected with the three-way valve 4, the bottom of the tank body 15 is provided with a biogas slurry extraction pipe 9, and the backflow screw pump One end of 10 is connected to the biogas slurry extraction pipe 9, and the other end of the return screw pump 10 is connected to the biogas slurry return pipe 14, which extends to the upper part of the tank body 15, and the biogas slurry spray port 13 is arranged in the tank body 15, The biogas slurry spray port 13 is connected to the biogas slurry return pipe 14 , the exhaust port 16 is arranged above the tank body 15 , and the inner wall of the tank body 15 is provided with a heating coil 12 .

The sieve plate 23 is provided with filter holes.

The biogas slurry extraction pipe 9 arranged at the bottom of the tank body 15 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 15 .

Beneficial effects of the utility model: the utility model adopts the paddle-type stirring blades to generate radial force, which has a strong shearing effect, promotes the dispersion of large particle size solids and fully mixes with the biogas slurry, and at the same time avoids crusting and promotes The type stirring blade produces axial force, small shear force, and little damage to methanogens; the biogas slurry at the bottom of the tank is forced to flow in a circumferential direction under the action of the backflow screw pump, forming an annular liquid circulation stirring, mechanical Stirring and liquid reflux stir together to improve the stirring effect and reduce the power consumption of stirring. Two discharge ports are set to effectively drain the biogas slurry and scum in the fermentation tank to improve the fermentation efficiency. The materials produced by the filter device can be fermented again. Effectively save fermentation raw materials and further reduce costs.

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-drainage pipe, 2-filter, 3-cleaning port, 4-three-way valve, 5-lower outlet screw pump, 6-lower outlet valve, 7-lower outlet pipe, 8-propelled stirring Leaf, 9-biogas slurry extraction pipe, 10-reflux screw pump, 11-feed inlet, 12-heating coil, 13-biogas slurry spray port, 14-biogas slurry return pipe, 15-tank, 16-row Air port, 17-driving device, 18-stirring shaft, 19-paddle stirring blade, 20-upper outlet valve, 21-upper outlet screw pump, 22-upper outlet pipe, 23-sieve plate.

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 compound fermenter, the equipment includes: drain pipe 1, filter 2, cleaning port 3, three-way valve 4, lower outlet screw pump 5, lower outlet valve 6, lower outlet Pipe 7, propulsion stirring blade 8, biogas slurry extraction pipe 9, return screw pump 10, feed inlet 11, heating coil 12, biogas slurry spray port 13, biogas slurry return pipe 14, tank body 15, exhaust port 16. Driving device 17, stirring shaft 18, paddle stirring blade 19, upper outlet valve 20, upper outlet screw pump 21, upper outlet pipe 22, sieve plate 23.

The drive device 17 is arranged directly above the fermenter body 15, the drive device 17 is connected to the stirring shaft 18, the top of the stirring shaft 18 is provided with a paddle type stirring blade 19, and the bottom end of the stirring shaft 18 is provided with a propulsion type stirring blade 8. The radial force generated by the paddle-type stirring blade 19 at the upper end of the stirring shaft 18 has a strong shearing effect, which can disperse the solid matter with a large particle size in the material, and at the same time promote the full mixing of the material and the biogas slurry, and can also avoid the upper In the case of material crusting, the axial force generated by the propulsive stirring blade 8 is adopted, the shearing force is small, and the damage to the methane bacteria is small, which ensures the normal progress of the fermentation.

The lower part of one side of the tank body 15 is provided with a feed inlet 11, the upper part of the other side of the tank body 15 is provided with an upper outlet pipe 22, and the upper outlet pipe 22 is provided with an upper outlet valve 20 and an upper outlet screw pump 21, The upper outlet pipe 22 is connected to the lower side of the filter 2, the upper part of the filter 2 is provided with a drain pipe 1, the sieve plate 23 is arranged in the filter 2, and the lower part of the side wall of the filter 2 is provided with a cleaning port 3 for draining The liquid pipe 1 is connected with the three-way valve 4, and the lower part of the other side of the tank body 15 is provided with a lower outlet pipe 7, and the lower outlet pipe 7 is provided with a lower outlet screw pump 5 and a lower outlet valve 6, and the lower outlet pipe 7 is connected with the three-way valve. The valve 4 is connected; through the upper outlet pipe 22 arranged on the top of the tank body 15, under the extraction action of the upper outlet screw pump 21, the scum in the tank body 15 is extracted and discharged into the filter 2 for filtering. The tank body 15 The biogas slurry in the lower part is extracted by the screw pump 5 at the lower outlet, and discharged through the three-way valve 4. Two discharge ports are set, which can effectively drain the biogas slurry and scum in the fermentation tank, improve the efficiency of fermentation, and filter The large particle size solid material filtered out by the device can also be fermented again, which effectively saves fermentation raw materials.

The lower part of the tank body 15 is provided with a biogas slurry extraction pipe 9, one end of the return screw pump 10 is connected to the biogas slurry extraction pipe 9, and the other end of the return screw pump 10 is connected to the biogas slurry return pipe 14, and the biogas slurry return pipe 14 extends to The upper part of the tank body 15, the biogas slurry spray port 13 is arranged in the tank body 15, the biogas slurry spray port 13 is connected with the biogas slurry return pipe 14, the exhaust port 16 is arranged above the tank body 15, and the inner wall of the tank body 15 is set There is a heating coil 12; the biogas slurry at the bottom of the tank 15 is pumped by the backflow screw pump 10 to force the liquid inside the tank 15 to flow in a circumferential direction, forming a liquid circulation stirring, the mechanical stirring of the stirring blade and the biogas slurry extraction The reflux and stirring of the liquid formed by the biogas slurry pumped by the pipe work together to form a sufficient mixing and stirring, which improves the stirring effect and effectively reduces the power consumption of stirring.

Working process of the present utility model:

Straw raw materials enter the tank body 15 through the feed port 11, and ferment with the methane bacteria in the tank body 15 at a certain temperature to produce methane gas. type stirring blade 19 to crush the straw raw material, and at the same time use the return screw pump 10 to extract the biogas slurry from the lower part of the tank body 15 through the biogas slurry extraction pipe 9, enter the biogas slurry return pipe 14, and pass through the biogas slurry on the biogas slurry return pipe 14. The biogas slurry spray port 13 sprays the biogas slurry on the upper part of the tank body 15, 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 and stirring. The methane gas is discharged and collected through the exhaust port 16 arranged on the upper part of the tank body 15. After the reaction is completed, the biogas slurry is discharged through the lower outlet pipe 7 arranged at the lower part of the tank body 15 and the lower outlet screw pump 5 through the three-way valve 4. The scum in the upper layer is discharged into the filter 2 through the upper outlet valve 20 and the upper outlet screw pump 21 arranged on the upper part of the tank body 15. After being filtered by the sieve plate 23, the biogas slurry enters the upper part of the filter 2 and passes through the drain. The pipe 1 enters the three-way valve 4 and is discharged through the three-way valve 4. The scum stays at the bottom of the filter 2, and the staff regularly opens the cleaning port 3 to clean the bottom of the filter 2.

The utility model adopts the paddle-type stirring blades to generate radial force, which has a strong shearing effect, promotes the dispersion of large particle size solids and fully mixes with the biogas slurry, and at the same time avoids crusting, and the push-type stirring blades produce axial effects The force and shear force are small, and the damage to methane bacteria is small; the biogas slurry at the bottom of the tank is forced to flow in a circumferential direction under the action of the backflow screw pump, forming a circular liquid circulation stirring, and the mechanical stirring and liquid reflux stirring work together , improve the stirring effect, reduce the power consumption of stirring, set up two discharge ports, effectively drain the biogas slurry and scum in the fermentation tank, improve the fermentation efficiency, and the materials produced by the filter device can be fermented again, effectively saving the fermentation raw materials and further reducing cost.

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. a combined type fermentor tank, is characterized in that: described combined type fermenter equipment comprises liquid discharge pipe, strainer, soil cleaning port, T-valve, lower outlet screw pump, lower outlet valve, lower outlet pipe, pusher paddle, natural pond liquid extraction tube, backflow spiral pump, opening for feed, heating coil, natural pond liquid mouth spray, natural pond liquid return line, tank body, venting port, drive unit, stir shaft, paddle paddle, upper outlet valve, upper outlet spiral pump, upper outlet pipe, sieve plate, described drive unit is arranged on directly over fermentation tank, drive unit is connected with stir shaft, the top of stir shaft is provided with paddle paddle, the bottom of stir shaft is provided with pusher paddle, tank body lower part is provided with opening for feed, 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, the opposite side bottom of tank body is provided with lower outlet pipe, 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 to natural pond liquid extraction tube, the backflow spiral pump the other end is connected to natural pond liquid return line, natural pond liquid return line extends to the top of tank body, natural pond liquid mouth spray is arranged in tank body, natural pond liquid mouth spray is connected with natural pond liquid return line, venting port is arranged on the top of tank body, inner tank wall is provided with heating coil.

2. a kind of combined type fermentor tank according to claim 1, is characterized in that: described sieve plate is provided with filter pore.

3. a kind of combined type fermentor tank according to claim 1, is characterized in that: the described natural pond liquid extraction opening being arranged at tank base becomes 10 ° to 15 ° angles with horizontal plane, become 22 ° to 25 ° angles with tank body center.