CN206529467U - Vertical drum formula biogas slurry original position device for improving quality - Google Patents

Abstract

The utility model is related to a kind of vertical drum formula biogas slurry device for improving quality in situ.A kind of vertical drum formula biogas slurry device for improving quality in situ, its structure mainly includes outer barrel, inner cylinder, motor and cover plate；The cover plate is provided with charging aperture, air guide port and scraper plate；Equidistant sieve aperture is carried on the inner cylinder, barrel, cylinder bottom is provided with residue outlet；The outer barrel, cylinder bottom, which is provided with the downside of rotating chassis and support, barrel, is provided with biogas slurry drain pipe, and pipe is provided with heavy metal filter；The motor, is connected by transmission mechanism with the interior barrel and an external barrel rotating chassis；The interior barrel and an external barrel rotating chassis, are rotated with same angular velocity.The utility model realizes the in-situ purification of biogas slurry, traditional biogas slurry is avoided to off normal the inconvenience limited by transportation range and floor space etc. that filtering brought, the agricultural security of biogas slurry, high efficiency, flexibility and convenience are realized, popularize agricultural to biogas slurry has great significance.

Description

Vertical drum type biogas slurry in-situ upgrading device

technical field

The utility model relates to the technical field of anaerobic fermentation technology and biogas slurry quality improvement treatment, in particular to a vertical drum type biogas slurry in-situ quality improvement device.

Background technique

Biogas slurry is the remaining waste liquid after anaerobic fermentation of organic waste such as agricultural and forestry organic waste, livestock and poultry manure, and domestic organic waste. A large amount of biogas slurry is produced in the anaerobic fermentation project. If it is directly dumped into rivers and lakes, it will cause water pollution. Agricultural use of biogas slurry is an effective measure to treat biogas slurry, which can not only avoid environmental pollution, but also turn waste into treasure. Biogas slurry is rich in nutrients, anti-stress, bactericidal components and crop growth promoters, etc. It is a popular organic green fertilizer for research. Moreover, after fermentation, the biogas slurry becomes tasteless, and its nutrients are more conducive to the absorption and utilization of crops than before fermentation. Therefore, the biogas slurry has a wide application prospect in the resource utilization of agricultural and forestry waste.

However, the biogas slurry directly from the fermentation tank often contains more biogas residues, impurities and scum, which is easy to block the pipelines and nozzles in the agricultural process, resulting in poor application effect, which makes the application and promotion of biogas slurry more difficult. severe constraints. Biogas slurry upgrading is a key technology to solve these constraints in the agricultural process of biogas slurry. The current biogas slurry upgrading method mainly adopts off-site filtration of biogas slurry. Common biogas slurry off-site filtration methods mainly include sieving method and squeeze filtration method. However, the off-site filtration of biogas slurry is easily limited by the transportation distance and occupied area, which causes inconvenience. In addition, there may be excessive heavy metals in some biogas slurry. If it is not treated and used directly in agriculture, it will inevitably bring safety hazards. It can be seen that the removal of heavy metals is also an important content in biogas slurry upgrading.

Contents of the invention

The purpose of this utility model is to provide a new biogas slurry in-situ upgrading reactor to overcome the above-mentioned deficiencies in the existing biogas slurry upgrading technology, and to perform effective in-situ separation of biogas slurry and biogas slag and The removal of heavy metals in the biogas slurry realizes the safe and efficient agricultural use of the biogas slurry.

Technical scheme of the utility model:

A vertical drum type biogas slurry in-situ upgrading device, including an outer cylinder, an inner cylinder, a motor and a cover plate; the cover plate is provided with a feed port, an air guide port and a scraper; the inner cylinder, the cylinder There are sieve holes at equal intervals on the wall, and a slag discharge pipe is provided at the bottom of the cylinder; the outer cylinder is provided with a rotating chassis and a bracket at the bottom of the cylinder, and a biogas slurry discharge pipe is provided on the lower side of the cylinder wall; the motor, through the transmission The mechanism is connected with the rotating chassis of the inner cylinder and the outer cylinder; the rotating chassis of the inner cylinder and the outer cylinder rotate at the same angular velocity;

The height of the top of the inner cylinder is lower than that of the outer cylinder. Preferably, the height difference between the top of the inner and outer cylinders is 1 to 3 cm;

The cover plate has the same diameter as the outer cylinder;

There are 4 scrapers in total, the top ends of which are fixed on the cover plate, with the center of the cover plate as the center, and arranged perpendicular to the cover plate in a ring shape, so that the scrapers are closely attached to the inner wall of the inner cylinder along the length direction, as Preferably, the bottom of the scraper is 1 to 3 cm away from the bottom of the inner cylinder;

Further, the scraper can be periodically removed from the cover for replacement;

The air guiding port is connected with the gas collecting device through the air guiding tube;

A valve and a heavy metal filter are arranged on the biogas slurry outlet pipe;

The slag discharge pipe protrudes from the bottom of the inner cylinder, passes through the rotating chassis of the outer cylinder, and discharges slag outside the outer cylinder, and a valve is arranged on the slag discharge pipe;

The motor is a variable frequency motor;

Further, all valves and nozzle connections are sealed;

As preferably, the sieve hole of the inner cylinder wall has an aperture of 80 to 120 mesh;

As a preference, the outer cylinder, the inner cylinder, the cover plate and a series of pipes are all made of stainless steel plates;

A biogas slurry in-situ upgrading method using the vertical drum type biogas slurry in-situ upgrading device:

The beneficial effects of the utility model:

(1) The utility model realizes the in-situ upgrading of the biogas slurry. When the motor rotates at a low speed, the device provided by the utility model acts as an anaerobic digestion reactor, and the low-speed rotation of the inner cylinder and the outer cylinder rotating chassis plays a role in stirring the fermentation raw materials in the inner and outer cylinders, which can improve the degradation of organic matter in it efficiency, thereby improving the quality of nutrients in the biogas slurry; when the motor rotates at high speed, the device provided by the utility model effectively plays the role of separating the biogas slurry and residue, and the centrifugal force generated by the high-speed rotation of the inner cylinder with sieve holes can Effectively filter and separate biogas slurry and residue. At the same time, the design of the scraper enables timely cleaning of the adherents on the inner cylinder wall, ensuring the permeability of the sieve holes, thus ensuring the long-term and effectiveness of biogas slurry filtration. The installation of the heavy metal filter on the biogas slurry outlet pipe removes the potential safety hazards caused by excessive heavy metals in the biogas slurry and further improves the quality of the biogas slurry. The utility model enables the anaerobic digestion and biogas slurry quality improvement to be carried out in the same reactor, thereby realizing the in-situ quality improvement of the biogas slurry.

(2) The device provided by the utility model has the advantages of simple and compact structure, flexible operation, convenient discharge and slag removal, and avoids the inconvenience caused by the traditional biogas slurry off-site filtration due to the limitation of transportation distance and floor space, and realizes biogas The safety, efficiency, flexibility and convenience of biogas slurry agricultural use are of great significance to the promotion and popularization of biogas slurry agricultural use.

Description of drawings

Figure 1 is a schematic structural view of the vertical rotary drum type biogas slurry in-situ upgrading device of the present invention

Figure 2 is a schematic diagram of the cover plate structure of the vertical drum type biogas slurry in-situ upgrading device of the utility model

Figure 3 is a schematic diagram of the structure of the inner cylinder of the vertical drum type biogas slurry in-situ upgrading device of the present invention

In the figure: 1. Motor, 2. Outer cylinder, 3. Inner cylinder, 4. Scraper, 5. Screen hole, 6. Cover plate, 7. Feed inlet, 8. Air guide port, 9. First valve, 10 .Heavy metal filter, 11. Biogas slurry outlet pipe, 12. Outer cylinder rotating chassis, 13. Bracket, 14. Second valve, 15. Slag outlet pipe.

detailed description

The utility model will be further described in detail below in conjunction with the accompanying drawings, but the embodiments of the utility model are not limited thereto.

Embodiment one:

A vertical drum-type biogas slurry in-situ upgrading device, including an outer cylinder (2), an inner cylinder (3), a motor (1) and a cover plate (6); the cover plate (6) is provided with an inlet Feed port (7), air guide port (8) and scraper (4); said inner cylinder (3), with equidistant sieve holes (5) on the cylinder wall, and a slag discharge pipe (15) at the bottom of the cylinder ; The outer cylinder (2) is provided with a rotating chassis (12) and a bracket (13) at the bottom of the cylinder, and a biogas slurry outlet pipe (11) is provided on the lower side of the cylinder wall; the motor (1) is connected to the motor through a transmission mechanism The inner cylinder (3) and the outer cylinder rotating chassis (12) are connected; the inner cylinder (3) and the outer cylinder rotating chassis (12) rotate at the same angular velocity;

The height of the top of the inner cylinder (3) is lower than that of the outer cylinder (2), so as to prevent wear and noise caused by excessive friction with the cover plate (6) when the inner cylinder rotates. As a preference, the inner and outer cylinders The height difference of the top is 1~3cm;

The cover plate (6) has the same diameter as the outer cylinder (2);

The scrapers (4) are 4 in total, the tops of which are fixed on the cover plate (6), with the center of the cover plate (6) as the center, arranged in a ring and evenly perpendicular to the cover plate (6), so that the scrapers ( 4) Adhere to the inner wall of the inner cylinder (3) along the length direction, preferably, the bottom of the scraper (4) is 1~3cm away from the bottom of the inner cylinder (3);

Further, the scraper (4) can be periodically removed from the cover (6) for replacement;

The air guiding port (8) is connected to the gas collecting device through the air guiding tube;

The biogas slurry outlet pipe (11) is provided with a first valve (9) and a heavy metal filter (10);

The slag discharge pipe (15) protrudes from the bottom of the inner cylinder (3), passes through the outer cylinder to rotate the chassis (12), and discharges slag outside the outer cylinder (2). The slag discharge pipe (15) is provided with a second Two valves (14);

The motor (1) is a variable frequency motor;

Further, all valves and nozzle connections are sealed;

Preferably, the sieve hole (5) on the wall of the inner cylinder (3) has a pore diameter of 80-120 mesh;

As a preference, the outer cylinder (2), inner cylinder (3), cover plate (6) and a series of pipes are all made of stainless steel;

Embodiment two:

The utility model is used for the experiment of in-situ upgrading of biogas liquid with straw and livestock and poultry manure as fermentation raw materials:

Take the air-dried agricultural and forestry waste straw and chop it to about 3cm. At the same time, take fresh livestock and poultry manure and sieve it to remove impurities. Then mix the two according to the ratio of carbon to nitrogen ratio of 25:1, and add water to prepare a dry matter concentration of 4. % to 10% (small value in summer, large value in winter) is fed into the inner cylinder (3) from the feed port (7) of the cover plate (6), and the dosage does not exceed the The working volume or effective volume. After the feeding was completed, the device was evacuated with nitrogen for 5 minutes and then sealed. Then turn on the motor (1), and adjust the frequency to an appropriate speed to stir the raw materials, and the reaction is officially started. When the motor (1) is turned on, the inner cylinder (3) and the outer cylinder rotating chassis (12) rotate at the same angular speed, and the outer cylinder (2) is fixed, so that the materials and filtrate in the inner and outer cylinders are stirred. The biogas generated during the reaction passes through the gas guide port (8) and is connected to the gas collection device for collection.

Anaerobic digestion was considered complete when little or no biogas was produced by the plant. At this time, connect the biogas slurry collection device to the biogas slurry outlet pipe (11), then open the first valve (9) of the biogas slurry outlet pipe, and increase the frequency of the motor (1) to a suitable speed to Slag biogas slurry is effectively separated by centrifugal filtration. The inner cylinder (3) rotates at a high speed driven by the motor (1), and the biogas slurry in the inner cylinder (3) is centrifugally filtered to the outer cylinder (2) through the sieve hole (5) on the wall of the inner cylinder under centrifugal action. After being filtered by the heavy metal filter (10) in the biogas slurry outlet pipe (11), it is discharged to the biogas slurry collection device in time. When no more biogas fluid is discharged from the biogas slurry outlet pipe (11), the first valve (9) of the biogas slurry outlet pipe is closed, and at the same time, the motor (1) is turned off. After the inner cylinder (3) and the outer cylinder rotating chassis (12) stop rotating, the second valve (14) of the slag discharge pipe is opened to discharge slag. So far, the in-situ upgrading of biogas slurry has been completed.

The above-mentioned embodiment is a preferred implementation mode of the present utility model, but the implementation mode of the present utility model is not limited by the above-mentioned embodiment, and any other changes, modifications and substitutions made without departing from the spirit and principle of the present utility model , combination, and simplification, all should be equivalent replacement methods, and are all included in the protection scope of the present utility model.

Claims (4)

1. a kind of vertical drum formula biogas slurry device for improving quality in situ, it is characterised in that：Including outer barrel（2）, inner cylinder（3）, motor（1）With Cover plate（6）；The cover plate（6）It is provided with charging aperture（7）, air guide port（8）And scraper plate（4）；The inner cylinder（3）, carry on barrel Equidistant sieve aperture（5）, cylinder bottom is provided with residue outlet（15）；The outer barrel（2）, cylinder bottom is provided with rotating chassis（12）And support （13）, barrel downside is provided with biogas slurry drain pipe（11）；The motor（1）, it is variable-frequency motor, passes through transmission mechanism and the inner cylinder （3）And outer barrel rotating chassis（12）It is connected；The inner cylinder（3）And outer barrel rotating chassis（12）, rotated with same angular velocity.

2. vertical drum formula biogas slurry according to claim 1 device for improving quality in situ, it is characterised in that：The inner cylinder（3）Cylinder Top is less than the outer barrel（2）1 ~ 3cm, the screen-aperture is 80 ~ 120 mesh.

3. vertical drum formula biogas slurry according to claim 1 device for improving quality in situ, it is characterised in that：The cover plate（6）, directly Footpath size and the outer barrel（2）It is identical；The scraper plate（4）, totally 4, top is fixed on the cover plate（6）On, with cover plate（6）In The heart is the center of circle, perpendicular to cover plate（6）It is evenly arranged with annular, makes scraper plate（4）It is close to the inner cylinder along its length（3）It is interior Wall, scraper plate（4）Bottom is away from the inner cylinder（3）1 ~ 3cm of bottom；The scraper plate（4）, can be from the cover plate（6）On periodically unload replacing.

4. vertical drum formula biogas slurry according to claim 1 device for improving quality in situ, it is characterised in that：The air guide port（8）, It is connected by airway tube with gas collecting apparatus；The biogas slurry drain pipe（11）On, if the first valve（9）And heavy metal filter （10）；The residue outlet（15）, from the inner cylinder（3）After end stretch goes out, through outer barrel rotating chassis（12）, to outer barrel（2）It is outgoing Slag, residue outlet（15）On set the second valve（14）；All valve and the mouth of pipe junctions are sealed.