Air-tight bottom support stirring device of efficient anaerobic fermentation tank

A technology of anaerobic fermentation tank and stirring device, which is applied in the directions of mixer accessories, transportation and packaging, mixers, etc., can solve the problems of uncommon application of bottom support, inoperable stirring system, easy failure of mechanical seals, etc., and achieves maintenance-free later period. , The effect of improving the service life and reducing the load

Pending Publication Date: 2020-09-01
辽宁省环保集团有限责任公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Anaerobic tank materials have high solid content and generally contain fine sand. In order to protect the bottom bearing, sealing protection must be provided. Conventional bottom bearings mostly use rotary bearings and are equipped with mechanical seals. The bottom support operates under sewage, and the working environment is harsh. The sealing is easy to fail, which makes the mixing system unable to operate, and the maintenance of the anaerobic tank needs to empty the whole tank of raw materials, which is extremely poor in operability, so the application of the bottom support on the anaerobic reactor is still not common

Method used

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  • Air-tight bottom support stirring device of efficient anaerobic fermentation tank
  • Air-tight bottom support stirring device of efficient anaerobic fermentation tank
  • Air-tight bottom support stirring device of efficient anaerobic fermentation tank

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: A high-efficiency anaerobic fermentation tank air-tight bottom support stirring device of the present invention includes a stirring shaft I1 placed in a tank body 15, a bearing seat 12, a bottom bearing 11, a shaft sleeve 8, a sleeve 7, and a top Gland 2, pneumatic sealing device, the bearing seat 12 is placed at the bottom of the tank body 15, the inner ring of the bearing seat 12 is provided with a bottom bearing 11, and the bottom bearing 11 is provided with a shaft sleeve 8 and a sleeve 8 installed at one end of the stirring shaft I1 Set on the stirring shaft I1, one end is connected with the outer ring of the bearing seat 12, and the other end is connected with the top gland 2 set on the stirring shaft I1 through the fastening bolt I5, between the sleeve 7 and the inner ring of the bearing seat 12 A settling chamber 28 is formed, an air chamber 21 is formed between the sleeve 8 and the top gland 2, and a pneumatic sealing device is installed on the sti...

Embodiment 2

[0044] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the minimum gap between the deflector 22 and the fender 23 in this embodiment is 2 mm. The rising biogas bubbles carrying the fine sand hit the fender 23 and the baffle plate 22, the biogas bubbles burst, and the fine sand settles. The baffle plate 22 and the fender 23 work together to prevent fine sand particles from entering the dynamic sealing ring 4 from the gap of the static sealing ring 3, causing damage to the dynamic sealing ring 4 and affecting the sealing effect.

Embodiment 3

[0045] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the minimum gap between the deflector 22 and the fender 23 in this embodiment is 4 mm. The rising biogas bubbles carrying the fine sand hit the fender 23 and the baffle plate 22, the biogas bubbles burst, and the fine sand settles. The baffle plate 22 and the fender 23 work together to prevent fine sand particles from entering the dynamic sealing ring 4 from the gap of the static sealing ring 3, causing damage to the dynamic sealing ring 4 and affecting the sealing effect.

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PUM

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Abstract

An air-tight bottom support stirring device of an efficient anaerobic fermentation tank belongs to the technical field of environmental protection equipment. The device comprises a stirring shaft I, abearing seat, a bottom bearing, a shaft sleeve, a sleeve, a top gland and a pneumatic sealing device. The bearing seat is arranged at the bottom in a tank body. The bottom bearing is arranged on theinner ring of the bearing seat. The shaft sleeve mounted at one end of the stirring shaft I is arranged in the bottom bearing. The sleeve sleeves the stirring shaft I, one end is connected with the outer ring of the bearing seat, and the other end is connected with the top gland which sleeves the stirring shaft I. A settling cavity is formed between the sleeve and the inner ring of the bearing seat. An air cavity is formed between the sleeve and the top gland. The pneumatic sealing device is arranged on the stirring shaft I in the air cavity. An air inlet is formed in the top gland, and an airpipe connected with an air source is mounted at the air inlet. The other end of the stirring shaft I is connected with a stirring shaft II of the anaerobic fermentation tank through a flange. A drainage pipe communicated with the settling cavity is arranged at the bottom of the tank body. According to the invention, the load of the tank top is reduced, and the safety of the tank top is improved.The pneumatic sealing device effectively prevents fine sand from entering the bottom bearing.

Description

technical field [0001] The invention belongs to the technical field of environmental protection equipment, and in particular relates to an air-tight bottom support stirring device for an efficient anaerobic fermentation tank. Background technique [0002] According to statistics from the Ministry of Agriculture, my country produces about 3.8 billion tons of livestock and poultry manure in one year, 40% of which have not been effectively utilized, seriously restricting the healthy development of my country's livestock and poultry breeding industry. Livestock and poultry manure is a pollutant if it is not treated. If it is used for anaerobic fermentation to produce biogas, clean energy can be obtained. The biogas slurry and biogas residue after the reaction are high-quality fertilizers. The scientific and reasonable resource utilization of livestock and poultry manure can effectively improve the ecological environment, increase the economic benefits of farms, and realize the h...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C02F11/04B01F15/00C02F103/20
CPCC02F11/04C02F2103/20B01F2035/353B01F2035/351B01F2035/352B01F35/00
Inventor 王冬艳王彧刘菲李银萍王冬琦金树威
Owner 辽宁省环保集团有限责任公司
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