CN112831407A - Large-scale aerobic fermentation jar with agitator - Google Patents

Large-scale aerobic fermentation jar with agitator Download PDF

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Publication number
CN112831407A
CN112831407A CN202011563826.0A CN202011563826A CN112831407A CN 112831407 A CN112831407 A CN 112831407A CN 202011563826 A CN202011563826 A CN 202011563826A CN 112831407 A CN112831407 A CN 112831407A
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CN
China
Prior art keywords
wall
strip
tank body
stirring shaft
radial
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Pending
Application number
CN202011563826.0A
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Chinese (zh)
Inventor
伊春海
胡正忠
殷学高
殷明
王峰
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Jiangsu Daming Bioengineering Equipment Co Ltd
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Jiangsu Daming Bioengineering Equipment Co Ltd
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Application filed by Jiangsu Daming Bioengineering Equipment Co Ltd filed Critical Jiangsu Daming Bioengineering Equipment Co Ltd
Priority to CN202011563826.0A priority Critical patent/CN112831407A/en
Publication of CN112831407A publication Critical patent/CN112831407A/en
Pending legal-status Critical Current

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    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/48Holding appliances; Racks; Supports
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M23/00Constructional details, e.g. recesses, hinges
    • C12M23/38Caps; Covers; Plugs; Pouring means
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M27/00Means for mixing, agitating or circulating fluids in the vessel
    • C12M27/02Stirrer or mobile mixing elements
    • C12M27/04Stirrer or mobile mixing elements with introduction of gas through the stirrer or mixing element
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M39/00Means for cleaning the apparatus or avoiding unwanted deposits of microorganisms
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/02Means for regulation, monitoring, measurement or control, e.g. flow regulation of foam
    • CCHEMISTRY; METALLURGY
    • C12BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
    • C12MAPPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
    • C12M41/00Means for regulation, monitoring, measurement or control, e.g. flow regulation
    • C12M41/12Means for regulation, monitoring, measurement or control, e.g. flow regulation of temperature
    • C12M41/18Heat exchange systems, e.g. heat jackets or outer envelopes
    • C12M41/22Heat exchange systems, e.g. heat jackets or outer envelopes in contact with the bioreactor walls

Abstract

The invention discloses a large aerobic fermentation tank with a stirrer, which comprises a tank body, an air inlet pipe, an air overflow pipe, a feed pipe, a discharge pipe, a stirring motor, a jacket, a base plate and a stirring shaft, wherein the tank body is provided with a plurality of stirring holes; a gas diffusion mechanism is arranged on the stirring shaft and positioned in the tank body. According to the large aerobic fermentation tank with the stirrer, the gas diffusion mechanism is arranged on the stirring shaft, so that gas can be rapidly and uniformly diffused into liquid in the stirring process, rapid and uniform mixing is realized, and the fermentation efficiency is improved; the annular liquid inlet pipe is matched with the annular liquid outlet pipe up and down, so that liquid inlet at the lower side can uniformly rise to perform uniform heat exchange; the rotation stability of the stirring shaft can be enhanced by the matching of the rotating shaft bearing and the side supporting rod; the reaction temperature in the tank body can be conveniently controlled by utilizing the jacket.

Description

Large-scale aerobic fermentation jar with agitator
Technical Field
The invention relates to a fermentation tank, in particular to a large-scale aerobic fermentation tank with a stirrer.
Background
The innovation is open, the national economy is rapidly increased, technological innovation and independent innovation become mainstream of the current industrial development, and the national industry gradually develops towards intensive, energy-saving, emission-reducing, low-carbon and efficient directions. The fermentation tank is an external environment device for the growth, propagation and product formation of microorganisms in the fermentation process, and mainly aims to ensure the growth of the microorganisms in an aseptic state, so that the prevention of microbial contamination is very important for the fermentation. For example, some chlorination and sulfidation reactions are fast reactions, which require a stirrer to provide high mass transfer strength; some reactions require the absorption of oxygen, which is difficult to dissolve, which in turn requires the use of a stirrer, which is critical for its use, to provide high dispersing capacity. Therefore, it is necessary to design a large aerobic fermentation tank with a stirrer, which can meet the requirement of rapid and uniform dispersion of oxygen.
Disclosure of Invention
The purpose of the invention is as follows: provides a large aerobic fermentation tank with a stirrer, which can meet the requirement of rapid and uniform dispersion of oxygen.
The technical scheme is as follows: the large aerobic fermentation tank with the stirrer comprises a tank body, an air inlet pipe, an air overflow pipe, a feeding pipe, a discharging pipe, a stirring motor, a jacket, a base plate and a stirring shaft; a top upright post is arranged at the top of the tank body, and a top mounting plate is fixedly arranged on the top upright post; the stirring motor is fixedly arranged on the top mounting plate; the lower end of the stirring shaft vertically extends into the tank body, the upper end of the stirring shaft is butted with an output shaft of a stirring motor, a rotating shaft bearing is arranged on the lower end of the stirring shaft, and the rotating shaft bearing is arranged on the inner wall of the tank body through a side supporting rod; the gas overflow pipe and the feeding pipe are communicated and arranged at the top of the tank body; a gas diffusion mechanism is arranged on the stirring shaft and in the tank body; the air inlet pipe extends into the tank body and is communicated with the gas diffusion mechanism; the jacket is arranged on the outer wall of the tank body, and an annular liquid outlet pipe is sleeved on the circumference of the upper part of the jacket; each branch liquid outlet pipe is communicated and arranged between the inner wall of the annular liquid outlet pipe and the jacket, and the outer wall of the annular liquid outlet pipe is communicated and arranged with one liquid outlet pipe; each branch liquid outlet pipe is positioned on the same circumference at equal intervals; an annular liquid inlet pipe is sleeved on the circumference of the lower part of the jacket; each branch liquid inlet pipe is communicated and arranged between the inner wall of the annular liquid inlet pipe and the jacket, and the outer wall of the annular liquid inlet pipe is communicated and provided with a liquid inlet pipe; all the branch liquid inlet pipes are positioned on the same circumference at equal intervals; three supporting legs are vertically arranged at the bottom of the tank body; the lower ends of the three supporting legs are fixedly arranged on the base plate; the discharging pipe is communicated with the bottom of the tank body.
Further, the gas diffusion mechanism comprises an upper cylinder cover cap, a lower cylinder cover cap and each diffusion branch; each diffusion branch comprises a vertical air duct, a radial air duct, an air outlet duct and a diffusion fan blade; an upper side shaft sleeve is vertically communicated with the center of the upper side surface of the upper cylinder cover; the stirring shaft vertically penetrates through the upper shaft sleeve, and an upper sealing ring is arranged between the inner wall of the upper shaft sleeve and the stirring shaft; the center of the lower side surface of the lower cylinder cover is fixedly arranged on the stirring shaft; the upper side opening of the lower cylinder cover cap vertically extends into the lower side opening of the upper cylinder cover cap, and a cylinder sealing ring is arranged between the outer wall of the upper side opening of the lower cylinder cover cap and the inner wall of the lower side opening of the upper cylinder cover cap; a top sealing ring is arranged between the edge of the upper side cylinder opening of the lower cylinder cover cap and the inner wall of the cylinder bottom of the upper cylinder cover cap; the air inlet pipe is communicated with the top of the upper cylinder cover; the upper ends of the vertical gas guide pipes of the diffusion branches are vertically communicated with the bottom of the lower cylinder cover cap, and the vertical gas guide pipes are parallel to the stirring shaft; one end of the radial air duct is vertically fixed on the stirring shaft, and the other end is sealed; the lower end of the vertical air duct is communicated with a radial air duct at a corresponding position below the vertical air duct; one end of the air outlet pipe is vertically communicated with the radial air guide pipe, and the other end of the air outlet pipe is sealed; the diffusion fan blades are rotatably arranged on the sealing end of the air outlet pipe; the air outlet pipe is provided with an air outlet strip-shaped hole along the length direction; the air outlet pipe is vertical to the stirring shaft.
Furthermore, a wall scraping mechanism used for scraping the wall of the inner wall of the tank body is detachably mounted on the sealing end of the radial air duct.
Further, the wall scraping mechanism comprises a fixed sleeve, a fixed bolt, a fixed strip and a vertical scraping strip; one end of the fixed sleeve is sleeved on the sealing end of the radial air duct and is detachably fixed through a fixed bolt; the other end of the fixing sleeve is sealed; a hinge seat is arranged on the end face of the closed end of the fixed sleeve; the middle part of the fixed strip is hinged on the hinge seat, and the fixed strip is parallel to the stirring shaft; the vertical scraping strip is fixedly arranged on the edge of the fixing strip and is close to the vertical inner wall of the tank body.
Furthermore, a radial stop strip and an inclined stop strip are respectively arranged on the end face of the closed end of the fixed sleeve and positioned at two sides of the hinged seat; the radial stopping strip is vertically arranged on the end face of the closed end of the fixed sleeve and used for limiting the swing angle of one side of the fixed strip, and the vertical scraping strip is tightly attached to the vertical inner wall of the tank body when the fixed strip is tightly attached to the radial stopping strip; the inclined baffle strip is obliquely arranged on the end face of the closed end of the fixed sleeve and used for limiting the swing angle of the other side of the fixed strip, and the vertical scraping strip is far away from the vertical inner wall of the tank body when the fixed strip is tightly attached to the inclined baffle strip; the included angle between the inclined stop strip and the radial stop strip is 30-45 degrees.
Furthermore, a suspension defoaming mechanism is arranged in the tank body and positioned on the stirring shaft in a sliding manner.
Further, the suspension defoaming mechanism comprises a suspension cylinder and two radial defoaming rods; the suspension cylinder is positioned below the lower cylinder cover cap, and a rotating shaft penetrating sleeve is arranged at the center of the suspension cylinder in a penetrating way; the stirring shaft penetrates through the rotating shaft and penetrates through the sleeve, and a gap is reserved between the stirring shaft and the inner wall of the rotating shaft penetrating through the sleeve; two radial defoaming rods are radially arranged at the periphery of the suspension cylinder, and a guide sliding sleeve is arranged on each radial defoaming rod; the guide sliding sleeve is sleeved on the vertical air duct in a sliding manner; vertical defoaming thin rods are vertically arranged on the lower side edge of the radial defoaming rod between the guide sliding sleeve and the suspension cylinder; two end discs are rotatably installed on the radial defoaming rods, and radial defoaming thin rods are connected and arranged at the corresponding positions of the circumferential edges of the two end discs and are parallel to the radial defoaming rods.
Further, a middle supporting ring is arranged on the outer wall of the middle part of the jacket; four hinged supports are arranged on the middle support ring, and an inclined strut rod is hinged and installed on each of the four hinged supports in a swinging mode; the lower ends of the diagonal brace rods are provided with a bottom foot supporting plate.
Furthermore, a tank bottom wall scraping mechanism is arranged at the lower end part of the stirring shaft and used for scraping the inner wall of the tank bottom of the tank body.
Further, the tank bottom wall scraping mechanism comprises a sliding sleeve, two inclined connecting rods, two inclined supporting bars and two bottom scraping bars; the sliding sleeve is sleeved on the lower end of the stirring shaft, and a section of spiral groove is formed in the inner wall of the sliding sleeve; a driving slide block is arranged at the lower end part of the stirring shaft and is embedded into the spiral groove in a sliding manner; two strip-shaped blades are radially arranged on the outer wall of the sliding sleeve pipe, and an included angle of 45 degrees is formed between each strip-shaped blade and the axial direction of the stirring shaft; the two inclined connecting rods are fixed on the outer wall of the sliding sleeve, and the inclined supporting bars are arranged on the end parts of the inclined connecting rods; the bottom scraping strip is arranged on the edge of the inclined supporting strip and is used for scraping the wall of the conical bottom inner wall of the tank body; when the stirring shaft rotates forwards, the strip-shaped blade plate pushes the sliding sleeve pipe to enable the driving sliding block to slide to the upper end of the spiral groove, and the bottom scraping strip is separated from the inner wall of the conical bottom of the tank body; when the stirring shaft rotates reversely, the strip-shaped blade plate pushes the sliding sleeve pipe to enable the driving sliding block to slide to the lower end of the spiral groove, and the bottom scraping strip is tightly attached to the inner wall of the conical bottom of the tank body.
Compared with the prior art, the invention has the beneficial effects that: the gas diffusion mechanism arranged on the stirring shaft can quickly and uniformly diffuse gas into liquid in the stirring process, so that quick and uniform mixing is realized, and the fermentation efficiency is improved; the annular liquid inlet pipe is matched with the annular liquid outlet pipe up and down, so that liquid inlet at the lower side can uniformly rise to perform uniform heat exchange; the rotation stability of the stirring shaft can be enhanced by the matching of the rotating shaft bearing and the side supporting rod; the reaction temperature in the tank body can be conveniently controlled by utilizing the jacket.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the gas diffusion mechanism mounting structure of the present invention;
fig. 3 is a schematic structural diagram of the wall scraping mechanism of the invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings, but the scope of the present invention is not limited to the embodiments.
Example 1:
as shown in FIGS. 1 to 3, the present invention discloses a large-scale aerobic fermentation tank with a stirrer, comprising: the device comprises a tank body 1, an air inlet pipe 2, an air overflow pipe 3, a feeding pipe 8, a discharging pipe 7, a stirring motor 4, a jacket 9, a base plate 16 and a stirring shaft 25; a top upright post 5 is arranged at the top of the tank body 1, and a top mounting plate 6 is fixedly arranged on the top upright post 5; the stirring motor 4 is fixedly arranged on the top mounting plate 6; the lower end of the stirring shaft 25 vertically extends into the tank body 1, the upper end of the stirring shaft 25 is butted with an output shaft of the stirring motor 4, a rotating shaft bearing 49 is arranged on the lower end of the stirring shaft 25, and the rotating shaft bearing 49 is arranged on the inner wall of the tank body 1 through a side supporting rod 50; the gas overflow pipe 3 and the feeding pipe 8 are communicated and arranged at the top of the tank body 1; a gas diffusion mechanism is arranged on the stirring shaft 25 and in the tank body 1; the air inlet pipe 2 extends into the tank body 1 and is communicated with the gas diffusion mechanism; the jacket 9 is arranged on the outer wall of the tank body 1, and an annular liquid outlet pipe 21 is sleeved on the circumference of the upper part of the jacket 9; each branch liquid outlet pipe 22 is communicated and arranged between the inner wall of the annular liquid outlet pipe 21 and the jacket 9, and the outer wall of the annular liquid outlet pipe 21 is communicated and provided with a liquid outlet pipe 10; the branch liquid outlet pipes 22 are positioned on the same circumference at equal intervals; an annular liquid inlet pipe 19 is sleeved on the circumference of the lower part of the jacket 9; each branch liquid inlet pipe 20 is communicated and arranged between the inner wall of the annular liquid inlet pipe 19 and the jacket 9, and the outer wall of the annular liquid inlet pipe 19 is communicated and provided with a liquid inlet pipe 11; the branch liquid inlet pipes 20 are positioned on the same circumference at equal intervals; three supporting legs 15 are vertically arranged at the bottom of the tank body 1; the lower ends of the three supporting legs 15 are fixedly arranged on a base plate 16; the discharge pipe 7 is communicated with the bottom of the tank body 1.
The gas diffusion mechanism arranged on the stirring shaft 25 can quickly and uniformly diffuse gas into liquid in the stirring process, so that quick and uniform mixing is realized, and the fermentation efficiency is improved; the liquid inlet at the lower side can uniformly rise to perform uniform heat exchange by utilizing the vertical matching of the annular liquid inlet pipe 19 and the annular liquid outlet pipe 21; the rotation stability of the stirring shaft 25 can be enhanced by the cooperation of the rotating shaft bearing 49 and the side supporting rod 50; the reaction temperature in the tank body 1 can be conveniently controlled by using the jacket 9.
Further, the gas diffusion mechanism comprises an upper cylinder cover cap 27, a lower cylinder cover cap 31 and various diffusion branches; each diffusion branch comprises a vertical air duct 32, a radial air duct 38, an air outlet duct 47 and diffusion fan blades 46; an upper side shaft sleeve 26 is vertically communicated with the center of the upper side surface of the upper cylinder cover 27; the stirring shaft 25 vertically penetrates through the upper shaft sleeve 26, and an upper sealing ring 28 is arranged between the inner wall of the upper shaft sleeve 26 and the stirring shaft 25; the center of the lower side surface of the lower cylinder cover 31 is fixedly arranged on the stirring shaft 25; the upper side opening of the lower cylinder cover 31 vertically extends into the lower side opening of the upper cylinder cover 27, and a cylinder sealing ring 30 is arranged between the outer wall of the upper side opening of the lower cylinder cover 31 and the inner wall of the lower side opening of the upper cylinder cover 27; a top sealing ring 29 is arranged between the edge of the upper side cylinder opening of the lower cylinder cover 31 and the inner wall of the cylinder bottom of the upper cylinder cover 27; the air inlet pipe 2 is communicated with the top of the upper cylinder cover 27; the upper ends of the vertical gas-guide tubes 32 of the diffusion branches are vertically communicated with the bottom of the lower cylinder cover 31, and the vertical gas-guide tubes 32 are parallel to the stirring shaft 25; one end of the radial air duct 38 is vertically fixed on the stirring shaft 25, and the other end is sealed; the lower end of the vertical air duct 32 is communicated with a radial air duct 38 at a corresponding position below; one end of the air outlet pipe 47 is vertically communicated with the radial air guide pipe 38, and the other end of the air outlet pipe 47 is sealed; diffuser vanes 46 are rotatably mounted on the sealed end of outlet tube 47; an air outlet strip-shaped hole 48 is formed in the air outlet pipe 47 along the length direction of the air outlet pipe; the air outlet pipe 47 is perpendicular to the stirring shaft 25.
The gas diffusion mechanism composed of the upper cylinder cover cap 27, the lower cylinder cover cap 31 and each diffusion branch can enable the gas to enter a rotary sealing cavity formed by the upper cylinder cover cap 27 and the lower cylinder cover cap 31 from the gas inlet pipe 2 for buffering and pressurizing, then sequentially enter liquid in the tank body 1 along the vertical gas guide pipe 32, the radial gas guide pipe 38 and the gas outlet pipe 47, and under the rotating action of the stirring shaft 25, water flow drives the diffusion fan blades 46 to rotate, so that the entered gas can be rapidly and uniformly diffused, and the fermentation efficiency is effectively improved; the vertical air duct 32, the radial air duct 38 and the air outlet duct 47 are rotated in the tank body 1, so that a certain stirring effect can be achieved, and the effect is similar to that of fan blades fixed on the stirring shaft 25 in the prior art.
Furthermore, a wall scraping mechanism for scraping the inner wall of the tank body 1 is detachably mounted on the sealing end of the radial air duct 38. The inner wall of the tank body 1 can be cleaned by the wall scraping mechanism, and wall hanging objects can be scraped.
Further, the wall scraping mechanism comprises a fixing sleeve 39, a fixing bolt 40, a fixing strip 42 and a vertical scraping strip 43; one end of the fixed sleeve 39 is sleeved on the sealing end of the radial air duct 38 and is detachably fixed through a fixed bolt 40; the other end of the fixing sleeve 39 is closed; a hinge seat 41 is arranged on the end face of the closed end of the fixed sleeve 39; the middle part of the fixed strip 42 is hinged on the hinge seat 41, and the fixed strip 42 is parallel to the stirring shaft 25; the vertical scraping strip 43 is fixedly arranged on the edge of the fixing strip 42 and is close to the vertical inner wall of the tank body 1.
Utilize fixed cover 39, fixing bolt 40, fixed strip 42 and vertical scraping strip 43 to constitute and scrape the wall mechanism for vertical scraping strip 43 can have certain swing range, can not cause the damage to the inner wall of jar body 1.
Furthermore, a radial stopping strip 45 and an inclined stopping strip 44 are respectively arranged on the end face of the closed end of the fixed sleeve 39 and positioned at two sides of the hinge seat 41; the radial stopping strip 45 is vertically arranged on the end face of the closed end of the fixed sleeve 39 and used for limiting the swing angle of one side of the fixed strip 42, and the vertical scraping strip 43 is tightly attached to the vertical inner wall of the tank body 1 when the fixed strip 42 is tightly attached to the radial stopping strip 45; the inclined baffle strip 44 is obliquely arranged on the end face of the closed end of the fixed sleeve 39 and is used for limiting the swing angle of the other side of the fixed strip 42, and when the fixed strip 42 is tightly attached to the inclined baffle strip 44, the vertical scraping strip 43 is far away from the vertical inner wall of the tank body 1; the included angle between the inclined baffle strip 44 and the radial baffle strip 45 is 30-45 degrees.
The radial stopping strips 45 and the inclined stopping strips 44 can limit the swing amplitude of the two sides of the fixing strips 42, when the stirring shaft 25 rotates forwards, the fixing strips 42 swing under the action of water flow and then contact the inclined stopping strips 44, at the moment, the vertical scraping strips 43 are far away from the vertical inner wall of the tank body 1, namely, when the stirring motor 4 rotates forwards and gas is introduced for diffusion, the vertical scraping strips 43 do not contact the vertical inner wall of the tank body 1, so that the power consumption of the motor is reduced, and the long-term abrasion of the vertical scraping strips 43 and the vertical inner wall of the tank body 1 is avoided; when the stirring shaft 25 rotates reversely, the fixing strips 42 swing under the action of water flow and then contact the radial blocking strips 45, the edges of the vertical scraping strips 43 are tightly attached to the vertical inner wall of the tank body 1, namely, when the stirring motor 4 rotates reversely to clean the wall, the vertical scraping strips 43 contact the vertical inner wall of the tank body 1, and therefore wall-hanging materials on the vertical inner wall of the tank body 1 can be effectively cleaned.
Further, a suspension defoaming mechanism is slidably mounted in the tank body 1 and on the stirring shaft 25. Utilize suspension defoaming mechanism floated the installation in jar body 1, can go up and down along with the liquid level, carry out the defoaming to the bubble of liquid level.
Further, the suspension defoaming mechanism comprises a suspension cylinder 33 and two radial defoaming rods 37; the suspension cylinder 33 is positioned below the lower cylinder cover 31, and a rotating shaft penetrating sleeve is arranged at the center of the suspension cylinder 33 in a penetrating manner; the stirring shaft 25 penetrates through the rotating shaft and penetrates through the sleeve, and a gap is reserved between the stirring shaft and the inner wall of the rotating shaft penetrating through the sleeve; two radial defoaming rods 37 are radially arranged on the periphery of the suspension cylinder 33, and a guide sliding sleeve 34 is arranged on the radial defoaming rods 37; the guide sliding sleeve 34 is sleeved on the vertical air duct 32 in a sliding manner; vertical defoaming thin rods 36 are vertically arranged on the lower side edge of a radial defoaming rod 37 between the guide sliding sleeve 34 and the suspension cylinder 33; two end disks 60 are rotatably mounted on the radial defoaming rods 37, and radial defoaming thin rods 61 are connected and arranged at corresponding positions of the circumferential edges of the two end disks 60, and the radial defoaming thin rods 61 are parallel to the radial defoaming rods 37.
The suspension cylinder 33 can be used for lifting the whole suspension defoaming mechanism along with the liquid level, so that the bubbles on the liquid level are defoamed; utilize the defoaming of two tip discs 60 and each radial defoaming pin 61 to constitute to roll the cage to when radial defoaming pole 37 is rotatory, make the defoaming roll the cage rotatory, effectively go out the bubble to the bubble of liquid level, and have better defoaming effect.
Further, a middle supporting ring 12 is arranged on the outer wall of the middle part of the jacket 9; four hinged supports 13 are arranged on the middle supporting ring 12, and an inclined strut rod 14 is hinged and installed on each of the four hinged supports 13 in a swinging mode; a foot support plate 17 is provided at the lower end of each diagonal strut rod 14. The stability of the tank 1 can be enhanced by the support structure of the central support ring 12 and the four diagonal strut rods 14.
Further, a tank bottom wall scraping mechanism is arranged at the lower end part of the stirring shaft 25 and is used for scraping the inner wall of the tank bottom of the tank body 1. The tank bottom wall scraping mechanism can be used for scraping the inner wall of the tank bottom for cleaning.
Further, the tank bottom wall scraping mechanism comprises a sliding sleeve 52, two inclined connecting rods 54, two inclined supporting bars 55 and two bottom scraping bars 56; the sliding sleeve pipe 52 is sleeved on the lower end of the stirring shaft 25, and a section of spiral groove 58 is arranged on the inner wall of the sliding sleeve pipe 52; a driving slide block 57 is arranged on the lower end part of the stirring shaft 25, and the driving slide block 57 is embedded into the spiral groove 58 in a sliding manner; two strip-shaped blades 53 are radially arranged on the outer wall of the sliding sleeve 52, and the strip-shaped blades 53 form an included angle of 45 degrees with the axial direction of the stirring shaft 25; two tilting links 54 are fixed on the outer wall of the sliding sleeve 52, and a tilting support 55 is installed on the end of the tilting links 54; the bottom scraping strips 56 are arranged on the edges of the inclined supporting strips 55 and are used for scraping the wall of the conical bottom inner wall of the tank body 1; when the stirring shaft 25 rotates in the forward direction, the strip-shaped blade plates 53 push the sliding sleeve 52 to enable the driving slide block 57 to slide to the upper end of the spiral groove 58, and the bottom scraping strips 56 are separated from the inner wall of the conical bottom of the tank body 1; when the stirring shaft 25 rotates reversely, the strip-shaped blade plate 53 pushes the sliding sleeve 52 to make the driving slide block 57 slide to the lower end of the spiral groove 58, and the bottom scraping strip 56 is tightly attached to the inner wall of the conical bottom of the tank body 1.
The tank bottom wall scraping mechanism consisting of the sliding sleeve 52, the strip-shaped blade plate 53, the inclined connecting rod 54, the inclined supporting strip 55 and the bottom scraping strip 56 is utilized, so that the bottom scraping strip 56 can scrape and clean the inner wall of the conical bottom of the tank body 1 when the stirring shaft 25 rotates reversely; the strip-shaped blade plates 53 can push the sliding sleeve 52 to move up and down when the stirring shaft 25 rotates forwards or reversely, so that different bottom wall scraping states are presented.
When the large aerobic fermentation tank with the stirrer is used, when the stirring shaft 25 rotates forwards, the fixing strip 42 swings under the action of water flow and then contacts the inclined baffle strip 44, at the moment, the vertical scraping strip 43 is far away from the vertical inner wall of the tank body 1, namely, when the stirring motor 4 rotates forwards and gas is introduced for diffusion, the vertical scraping strip 43 does not contact the vertical inner wall of the tank body 1, so that the power consumption of the motor is reduced, and the long-term abrasion of the vertical scraping strip 43 and the vertical inner wall of the tank body 1 is avoided; when the stirring shaft 25 rotates reversely, the fixing strips 42 swing under the action of water flow and then contact the radial blocking strips 45, the edges of the vertical scraping strips 43 are tightly attached to the vertical inner wall of the tank body 1, namely, when the stirring motor 4 rotates reversely to clean the wall, the vertical scraping strips 43 contact the vertical inner wall of the tank body 1, and therefore wall-hanging materials on the vertical inner wall of the tank body 1 can be effectively cleaned.
When the stirring shaft 25 rotates in the forward direction, the strip-shaped blade plate 53 pushes the sliding sleeve 52 under the action of water flow to enable the driving slide block 57 to slide to the upper end of the spiral groove 58, and at the moment, the strip-shaped blade plate 53 also has certain upward thrust to enable the bottom scraping strip 56 to be separated from the inner wall of the conical bottom of the tank body 1; when the stirring shaft 25 rotates reversely, the strip-shaped blade plate 53 pushes the sliding sleeve 52 under the action of water flow to enable the driving slide block 57 to slide to the lower end of the spiral groove 58, and at the moment, the strip-shaped blade plate 53 also has a certain downward thrust, and the bottom scraping strip 56 is attached to the inner wall of the conical bottom of the vertical tank body 1.
As noted above, while the present invention has been shown and described with reference to certain preferred embodiments, it is not to be construed as limited thereto. Various changes in form and detail may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (10)

1. The utility model provides a large-scale aerobic fermentation jar with agitator which characterized in that: comprises a tank body (1), an air inlet pipe (2), an air overflow pipe (3), a feeding pipe (8), a discharging pipe (7), a stirring motor (4), a jacket (9), a base plate (16) and a stirring shaft (25); a top upright post (5) is arranged at the top of the tank body (1), and a top mounting plate (6) is fixedly arranged on the top upright post (5); the stirring motor (4) is fixedly arranged on the top mounting plate (6); the lower end of the stirring shaft (25) vertically extends into the tank body (1), the upper end of the stirring shaft (25) is butted with an output shaft of the stirring motor (4), a rotating shaft bearing (49) is installed on the lower end of the stirring shaft (25), and the rotating shaft bearing (49) is installed on the inner wall of the tank body (1) through a side supporting rod (50); the gas overflow pipe (3) and the feeding pipe (8) are communicated and arranged at the top of the tank body (1); a gas diffusion mechanism is arranged on the stirring shaft (25) and positioned in the tank body (1); the air inlet pipe (2) extends into the tank body (1) and is communicated with the gas diffusion mechanism; the jacket (9) is arranged on the outer wall of the tank body (1), and an annular liquid outlet pipe (21) is sleeved on the circumference of the upper part of the jacket (9); each branch liquid outlet pipe (22) is communicated and arranged between the inner wall of the annular liquid outlet pipe (21) and the jacket (9), and a liquid outlet pipe (10) is communicated and arranged on the outer wall of the annular liquid outlet pipe (21); each branch liquid outlet pipe (22) is positioned on the same circumference at equal intervals; an annular liquid inlet pipe (19) is sleeved on the circumference of the lower part of the jacket (9); each branch liquid inlet pipe (20) is communicated and arranged between the inner wall of the annular liquid inlet pipe (19) and the jacket (9), and a liquid inlet pipe (11) is communicated and arranged on the outer wall of the annular liquid inlet pipe (19); each branch liquid inlet pipe (20) is positioned on the same circumference at equal intervals; three supporting legs (15) are vertically arranged at the bottom of the tank body (1); the lower ends of the three supporting legs (15) are fixedly arranged on a base plate (16); the discharge pipe (7) is communicated with the bottom of the tank body (1).
2. A large aerobic fermentation tank with a stirrer according to claim 1 wherein: the gas diffusion mechanism comprises an upper cylinder cover (27), a lower cylinder cover (31) and various diffusion branches; each diffusion branch comprises a vertical air duct (32), a radial air duct (38), an air outlet duct (47) and diffusion fan blades (46); an upper side shaft sleeve (26) is vertically communicated with the center of the upper side surface of the upper cylinder cover cap (27); the stirring shaft (25) vertically penetrates through the upper shaft sleeve (26), and an upper sealing ring (28) is arranged between the inner wall of the upper shaft sleeve (26) and the stirring shaft (25); the center of the lower side surface of the lower cylinder cover (31) is fixedly arranged on the stirring shaft (25); the upper side opening of the lower cylinder cover (31) vertically extends into the lower side opening of the upper cylinder cover (27), and a cylinder sealing ring (30) is arranged between the outer wall of the upper side opening of the lower cylinder cover (31) and the inner wall of the lower side opening of the upper cylinder cover (27); a top sealing ring (29) is arranged between the edge of the upper cylinder opening of the lower cylinder cover (31) and the inner wall of the cylinder bottom of the upper cylinder cover (27); the air inlet pipe (2) is communicated with the top of the upper cylinder cover cap (27); the upper ends of the vertical air ducts (32) of the diffusion branches are vertically communicated with the bottom of the lower cylinder cover cap (31), and the vertical air ducts (32) are parallel to the stirring shaft (25); one end of the radial air duct (38) is vertically fixed on the stirring shaft (25), and the other end is sealed; the lower end of the vertical air duct (32) is communicated with a radial air duct (38) at the corresponding position below; one end of the air outlet pipe (47) is vertically communicated with the radial air guide pipe (38), and the other end of the air outlet pipe (47) is sealed; the diffusion fan blades (46) are rotatably arranged on the sealing end of the air outlet pipe (47); an air outlet strip-shaped hole (48) is arranged on the air outlet pipe (47) along the length direction; the air outlet pipe (47) is vertical to the stirring shaft (25).
3. A large aerobic fermentation tank with a stirrer according to claim 2 wherein: a wall scraping mechanism for scraping the inner wall of the tank body (1) is detachably arranged at the sealing end of the radial air duct (38).
4. A large aerobic fermentation tank with an agitator according to claim 3 where: the wall scraping mechanism comprises a fixed sleeve (39), a fixed bolt (40), a fixed strip (42) and a vertical scraping strip (43); one end of the fixed sleeve (39) is sleeved on the sealing end of the radial air duct (38) and is detachably fixed through a fixed bolt (40); the other end of the fixed sleeve (39) is sealed; a hinge seat (41) is arranged on the end face of the closed end of the fixed sleeve (39); the middle part of the fixed strip (42) is hinged on the hinged seat (41), and the fixed strip (42) is parallel to the stirring shaft (25); the vertical scraping strip (43) is fixedly arranged on the edge of the fixing strip (42) and is close to the vertical inner wall of the tank body (1).
5. A large aerobic fermentation tank with a stirrer according to claim 4 wherein: a radial stopping strip (45) and an inclined stopping strip (44) are respectively arranged on the end face of the closed end of the fixed sleeve (39) and positioned at two sides of the hinged seat (41); the radial stopping strip (45) is vertically arranged on the end face of the closed end of the fixed sleeve (39) and used for limiting the swinging angle of one side of the fixed strip (42), and the vertical scraping strip (43) is tightly attached to the vertical inner wall of the tank body (1) when the fixed strip (42) is tightly attached to the radial stopping strip (45); the inclined baffle strip (44) is obliquely arranged on the end face of the closed end of the fixed sleeve (39) and used for limiting the swing angle of the other side of the fixed strip (42), and when the fixed strip (42) is tightly attached to the inclined baffle strip (44), the vertical scraping strip (43) is far away from the vertical inner wall of the tank body (1); the included angle between the inclined stop strip (44) and the radial stop strip (45) is 30-45 degrees.
6. A large aerobic fermentation tank with a stirrer according to claim 2 wherein: a suspension defoaming mechanism is arranged in the tank body (1) and positioned on the stirring shaft (25) in a sliding way.
7. A large aerobic fermentation tank with a stirrer according to claim 6 wherein: the suspension defoaming mechanism comprises a suspension cylinder (33) and two radial defoaming rods (37); the suspension cylinder (33) is positioned below the lower cylinder cover cap (31), and a rotating shaft penetrating sleeve is arranged at the center of the suspension cylinder (33) in a penetrating way; the stirring shaft (25) penetrates through the rotating shaft and penetrates through the sleeve, and a gap is reserved between the stirring shaft and the inner wall of the rotating shaft penetrating through the sleeve; two radial defoaming rods (37) are radially arranged on the periphery of the suspension cylinder (33), and a guide sliding sleeve (34) is arranged on each radial defoaming rod (37); the guide sliding sleeve (34) is sleeved on the vertical air duct (32) in a sliding manner; vertical defoaming thin rods (36) are vertically arranged on the lower side edge of a radial defoaming rod (37) between the guide sliding sleeve (34) and the suspension cylinder (33); two end discs (60) are rotatably arranged on the radial defoaming rod (37), the radial defoaming thin rods (61) are connected and arranged at the corresponding positions of the circumferential edges of the two end discs (60), and the radial defoaming thin rods (61) are parallel to the radial defoaming rod (37).
8. A large aerobic fermentation tank with a stirrer according to claim 1 wherein: a middle supporting ring (12) is arranged on the outer wall of the middle part of the jacket (9); four hinged supports (13) are arranged on the middle support ring (12), and an inclined strut rod (14) is hinged and installed on each hinged support (13) in a swinging mode; the lower ends of the diagonal brace rods (14) are provided with a bottom foot supporting plate (17).
9. A large aerobic fermentation tank with a stirrer according to claim 1 wherein: the lower end part of the stirring shaft (25) is provided with a tank bottom wall scraping mechanism for scraping the inner wall of the tank bottom of the tank body (1).
10. A large aerobic fermentation tank with an agitator according to claim 9 wherein: the tank bottom wall scraping mechanism comprises a sliding sleeve (52), two inclined connecting rods (54), two inclined supporting bars (55) and two bottom scraping bars (56); the sliding sleeve pipe (52) is sleeved on the lower end of the stirring shaft (25), and a section of spiral groove (58) is arranged on the inner wall of the sliding sleeve pipe (52); a driving slide block (57) is arranged at the lower end part of the stirring shaft (25), and the driving slide block (57) is embedded into the spiral groove (58) in a sliding way; two strip-shaped blades (53) are radially arranged on the outer wall of the sliding sleeve pipe (52), and an included angle of 45 degrees is formed between the strip-shaped blades (53) and the axial direction of the stirring shaft (25); two inclined connecting rods (54) are fixed on the outer wall of the sliding sleeve (52), and inclined supporting bars (55) are arranged on the end parts of the inclined connecting rods (54); the bottom scraping strip (56) is arranged on the edge of the inclined supporting strip (55) and is used for scraping the wall of the conical bottom inner wall of the tank body (1); when the stirring shaft (25) rotates forwards, the strip-shaped blade plate (53) pushes the sliding sleeve (52) to enable the driving slide block (57) to slide to the upper end of the spiral groove (58), and the bottom scraping strip (56) is separated from the inner wall of the conical bottom of the tank body (1); when the stirring shaft (25) rotates reversely, the strip-shaped blade plate (53) pushes the sliding sleeve (52) to enable the driving slide block (57) to slide to the lower end of the spiral groove (58), and the bottom scraping strip (56) is attached to the inner wall of the conical bottom of the tank body (1).
CN202011563826.0A 2020-12-25 2020-12-25 Large-scale aerobic fermentation jar with agitator Pending CN112831407A (en)

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