CN210506333U

CN210506333U - Novel stirrer applied to large-scale biogas fermentation engineering

Info

Publication number: CN210506333U
Application number: CN201921032439.7U
Authority: CN
Inventors: 王丛生
Original assignee: Leshan Qili Agricultural Development Co ltd
Current assignee: Leshan Qili Agricultural Development Co ltd
Priority date: 2019-07-04
Filing date: 2019-07-04
Publication date: 2020-05-12
Anticipated expiration: 2029-07-04

Abstract

The utility model provides a be applied to novel agitator of large-scale biogas fermentation engineering here, its characterized in that: the device is provided with a stirring shaft, a clamping groove fixed on the stirring shaft, a clamping groove in the rotating head, a sliding block in the rotating head, a feeding pipe, a seal at the upper part of the rotating head, a small distribution hole at the upper part of the rotating head, a distribution pipe, a east China bearing, a base body at the lower part of the distributor and a bracket; the utility model mainly aims at the improvement of the feeding mode and the stirring defects of the large-scale fermentation tank, and particularly, the rotary distributor is applied to the CSTR fermentation tank and is skillfully combined with the stirrer, so that the large-area fermentation microorganisms and the feed liquid are uniformly and well mixed in a short time, the efficiency of biogas fermentation is greatly improved, and the energy consumption of the fermentation is saved; meanwhile, the length of the distributing pipe which is far longer than the paddle of the stirrer is stirred in the tank body, so that dead zones in the tank body can be effectively eliminated, and the volume gas production rate of the whole fermentation tank can be fully exerted.

Description

Novel stirrer applied to large-scale biogas fermentation engineering

Technical Field

The utility model relates to a novel stirrer, in particular to a novel stirrer applied to large-scale biogas fermentation engineering.

Background

At present, although a plurality of advanced and efficient biogas fermentation reactors are available in biogas fermentation projects at home and abroad, a fully mixed anaerobic reactor (CSTR) is still the mainstream process in biogas fermentation of sludge, high suspended matter organic wastewater, refractory organic wastewater and the like in urban sewage plants, and is the same at home and abroad.

It is known that one of the key factors for the continuous and efficient biogas fermentation is to uniformly contact and mix the fermentation microorganisms with the feed liquid. The CSTR fermentation tank in the industry at present is fed by a feeding hole near the bottom of the tank body, the mixing of fermentation microorganisms and feed liquid in the tank is realized under the stirring of a stirrer vertically (a small part of the stirrer is inclined) arranged at the top of the tank body, and the continuous and effective implementation of biogas fermentation is realized under the combined action of other key factors.

This feeding and stirring mode presents some problems and drawbacks:

1. because little water is fed, the fermentation microorganisms in the tank are mixed with the feed liquid under the stirring of the stirrer, and the good mixing can be realized in a short time in the tank body with small volume of the fermentation tank; however, in a tank having a large volume, particularly a large diameter, it is difficult to achieve uniform and good mixing in a short time. If the stirring is carried out at a high speed for a long time, a large amount of electric energy is consumed and the fermentation reaction is also unfavorable.

2. For a tank body with a large volume, because the diameter and the rotating speed of the paddle of the stirrer are limited, in the edge area where the paddle can not be stirred, because the fermented microorganisms can not obtain continuous feed liquid nutrients, the microorganisms in the part of area can lose activity and can form dead zones, and the longer the time, the larger the dead zone is, the more the volume gas production efficiency of the fermentation tank can be seriously influenced.

SUMMERY OF THE UTILITY MODEL

Therefore, in order to solve the above disadvantages, the utility model provides a novel stirrer for large-scale biogas fermentation engineering. The utility model mainly aims at the improvement of the feeding mode and the stirring defects of the large-scale fermentation tank, and particularly, the rotary distributor is applied to the CSTR fermentation tank and is skillfully combined with the stirrer, so that the large-area fermentation microorganisms and the feed liquid are uniformly and well mixed in a short time, the efficiency of biogas fermentation is greatly improved, and the energy consumption of the fermentation is saved; meanwhile, the length of the distributing pipe which is far longer than the paddle of the stirrer is stirred in the tank body, so that dead zones in the tank body can be effectively eliminated, and the volume gas production rate of the whole fermentation tank can be fully exerted.

The utility model discloses a realize like this, construct a novel agitator who is applied to large-scale biogas fermentation engineering, its characterized in that: the device is provided with a stirring shaft, a clamping groove fixed on the stirring shaft, a clamping groove in the rotating head, a sliding block in the rotating head, a feeding pipe, a seal at the upper part of the rotating head, a small distribution hole at the upper part of the rotating head, a distribution pipe, a east China bearing, a base body at the lower part of the distributor and a bracket; the slide block is connected on the stirring shaft, the rotary distributor is divided into an upper part and a lower part, the lower part is fixed by a base and is connected with a feeding pipe; the upper part is a rotating part, two sides of the upper part are respectively provided with two distributing pipes which can rotate along with the rotating head; the motor of the stirrer is a double-speed motor, and the upper paddle is used for breaking the scum layer on the liquid level and stirring the feed liquid at high speed; when the biogas fermentation tank is at a low speed, the feeding pump is started, the slide block inside the rotating head moves upwards under the action of the pump pressure to enter a special clamping groove on the stirrer shaft, the rotating head rotates under the double acting force of the reverse spraying of the nozzles on the stirrer motor and the four distribution pipes, the four feed liquid rings are formed by spraying at the bottom of the whole biogas fermentation tank, and meanwhile, the holes reserved on the upper part of the rotating head can also distribute materials in the center of the tank body to form a central feed liquid ring.

The utility model has the advantages of as follows: the utility model mainly aims at the improvement of the feeding mode and the stirring defects of the large-scale fermentation tank, and particularly, the rotary distributor is applied to the CSTR fermentation tank and is skillfully combined with the stirrer, so that the large-area fermentation microorganisms and the feed liquid are uniformly and well mixed in a short time, the efficiency of biogas fermentation is greatly improved, and the energy consumption of the fermentation is saved; meanwhile, the length of the distributing pipe which is far longer than the paddle of the stirrer is stirred in the tank body, so that dead zones in the tank body can be effectively eliminated, and the volume gas production rate of the whole fermentation tank can be fully exerted.

Drawings

FIG. 1 is a schematic view of the entire patent;

fig. 2 is a schematic view of the interior of the patent.

Wherein: the stirring shaft comprises a stirring shaft 1, a clamping groove 2 fixed on the stirring shaft, a clamping groove 3 in the rotating head, a sliding block 4 in the rotating head, a feeding pipe 5, a seal 6 on the upper part of the rotating head, a material distribution pore 7 on the upper part of the rotating head, a material distribution pipe 8, a east China bearing 9, a base body 10 on the lower part of the material distributor and a support 11.

Detailed Description

The present invention will be described in detail with reference to the accompanying drawings 1-2, wherein the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a novel stirrer applied to large-scale biogas fermentation engineering, which is provided with a stirring shaft 1, a clamping groove 2 fixed on the stirring shaft, a clamping groove 3 in the rotating head, a slide block 4 in the rotating head, an inlet pipe 5, a seal 6 on the upper part of the rotating head, a cloth small hole 7 on the upper part of the rotating head, a cloth pipe 8, a east China bearing 9, a lower seat body 10 of the cloth device and a bracket 11; the slide block 4 is connected on the stirring shaft 1, the rotary distributor is divided into an upper part and a lower part, the lower part is fixed by a base and is connected with a feeding pipe 5; the upper part is a rotating part, two sides of the upper part are respectively provided with two distributing pipes 8 which can rotate along with the rotating head; the motor of the stirrer is a double-speed motor, and the upper paddle is used for breaking the scum layer on the liquid level and stirring the feed liquid at high speed; when the biogas fermentation tank is at a low speed, the feeding pump is started, the slide block inside the rotating head moves upwards under the action of the pump pressure to enter a special clamping groove on the stirrer shaft, the rotating head rotates under the double acting force of the reverse spraying of the nozzles on the stirrer motor and the four distribution pipes, the four feed liquid rings are formed by spraying at the bottom of the whole biogas fermentation tank, and meanwhile, the holes reserved on the upper part of the rotating head can also distribute materials in the center of the tank body to form a central feed liquid ring.

This patent theory of operation: the improved fermentation tank mainly aims at the defects of the feeding mode and the stirring of the large fermentation tank, and particularly, the rotary distributor is applied to the CSTR fermentation tank and is ingeniously combined with the stirrer, so that large-area fermentation microorganisms and feed liquid are uniformly and well mixed in a short time, the efficiency of methane fermentation is greatly improved, and the energy consumption of the fermentation is saved; meanwhile, the length of the distributing pipe which is far longer than the paddle of the stirrer is stirred in the tank body, so that dead zones in the tank body can be effectively eliminated, and the volume gas production rate of the whole fermentation tank can be fully exerted.

The concrete structure after the improvement:

the rotary distributor is divided into an upper part and a lower part, the lower part is fixed by a base and is connected with a feeding pipe; the upper part is a rotating part, two sides of the upper part are respectively provided with two distributing pipes which can rotate along with the rotating head. The motor of the stirrer is a double-speed motor, and the upper paddle is used for breaking the scum layer on the liquid level and stirring the feed liquid at high speed; when the biogas fermentation tank is at a low speed, the feeding pump is started, the slide block inside the rotating head moves upwards under the action of the pump pressure to enter a special clamping groove on the stirrer shaft, the rotating head rotates under the double acting force of the reverse spraying of the nozzles on the stirrer motor and the four distribution pipes, the four feed liquid rings are formed by spraying at the bottom of the whole biogas fermentation tank, and meanwhile, the holes reserved on the upper part of the rotating head can also distribute materials in the center of the tank body to form a central feed liquid ring. The distributing device also has the function of stirring. Before the feeding is finished, the stirrer is stopped firstly, and the inner sliding block of the rotating head is restored to the starting state due to self-weight sliding.

The application of the rotary distributor in a CSTR reactor of a large-scale biogas fermentation tank; the special structure of the rotary distributor has the dual functions of distributing and stirring.

The arrow direction shows the feeding and discharging directions, and the working principle of the rotary distributor is as follows: when the stirrer starts to rotate at a low speed, the feeding pump is started, feed liquid enters the lower base body 10 of the distributing device through the feeding pipe 5, and the sliding block 4 in the rotating head moves upwards under the action of pump pressure. 4 keys of the sliding block are inserted into a clamping groove 2 fixed on the stirring shaft, the feed liquid enters a material distribution pipe 8 from a feed pipe 5 and is sprayed out from a spray pipe at the end part of the material distribution pipe 8 to form reverse thrust, and meanwhile, the sliding block 4 is connected with the stirring shaft 1, so that the material distributor starts to rotate for material distribution under the dual-action pushing. When the stirrer stops, the feeding pump also stops, the slide block 4 in the rotating head falls down due to self weight, the stirring shaft 1 is disconnected with the distributor, and the distribution is finished.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a be applied to novel agitator of large-scale marsh gas fermentation engineering which characterized in that: the device is provided with a stirring shaft (1), a clamping groove (2) fixed on the stirring shaft, a clamping groove (3) in a rotating head, a sliding block (4) in the rotating head, a feeding pipe (5), a seal (6) at the upper part of the rotating head, a small distribution hole (7) at the upper part of the rotating head, a distribution pipe (8), a east China bearing (9), a lower base body (10) of a distributor and a support (11); the slide block (4) is connected on the stirring shaft (1), the rotary distributor is divided into an upper part and a lower part, the lower part is fixed by a base and is connected with a feeding pipe (5); the upper part is a rotating part, two sides of the upper part are respectively provided with two distributing pipes (8) which can rotate along with the rotating head; the motor of the stirrer is a double-speed motor, and the upper paddle is used for breaking the scum layer on the liquid level and stirring the feed liquid at high speed; when the biogas fermentation tank is at a low speed, the feeding pump is started, the slide block inside the rotating head moves upwards under the action of the pump pressure to enter a special clamping groove on the stirrer shaft, the rotating head rotates under the double acting force of the reverse spraying of the nozzles on the stirrer motor and the four distribution pipes, the four feed liquid rings are formed by spraying at the bottom of the whole biogas fermentation tank, and meanwhile, the holes reserved on the upper part of the rotating head can also distribute materials in the center of the tank body to form a central feed liquid ring.