CN113278498A

CN113278498A - Fermentation tank stirring mechanism for improving dissolved oxygen content

Info

Publication number: CN113278498A
Application number: CN202110558074.7A
Authority: CN
Inventors: 孙有强
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-05-21
Filing date: 2021-05-21
Publication date: 2021-08-20

Abstract

The invention relates to the technical field of fermentation engineering, and discloses a fermentation tank stirring mechanism for improving dissolved oxygen, which comprises a tank body, wherein a transmission shaft is arranged in the tank body, and a first-stage disc is fixedly arranged at the lower part of the transmission shaft. According to the invention, through the arrangement of the shifting plate, the original relatively stable liquid flow is changed into turbulent flow through the up-and-down reciprocating motion of the shifting plate, so that the flow layer in the liquid flow becomes irregular, and further the surface of bubbles in the liquid flow is subjected to uneven force, so that the bubbles are easy to break, and the dissolved oxygen in the fermentation liquid is further improved.

Description

Fermentation tank stirring mechanism for improving dissolved oxygen content

Technical Field

The invention relates to the technical field of fermentation engineering, in particular to a fermentation tank stirring mechanism for improving dissolved oxygen.

Background

The process by which the microbial cells themselves, or the metabolites, are produced by the life activities of the microorganisms in the presence of oxygen is called fermentation, and the equipment which accomplishes this process is called fermenter.

The fermentation liquid is introduced from the bottom of the fermentation tank during operation of the existing fermentation tank, then air is introduced, the air forms bubbles in the fermentation liquid and gradually rises to the liquid level, meanwhile, the stirring blades in the fermentation liquid rotate to cut the bubbles, so that the bubbles are dispersed into smaller bubbles, in the process, part of air in the bubbles enters the liquid to provide oxygen for microbial propagation breath in the liquid, but the existing fermentation tank only cuts and breaks the bubbles through the rotating blades, and part of the bubbles are still in the central position of the blades, so that the cutting force generated by the rotation of the blades cannot contact the part of the bubbles, and then the bubbles can rise to the liquid level, and the air in the fermentation tank cannot contact the fermentation liquid.

Disclosure of Invention

Aiming at the defects of the existing fermentation tank in the use process in the background technology, the invention provides a fermentation tank stirring mechanism for improving the dissolved oxygen, which has the advantage of improving the dissolved oxygen and solves the technical problems in the background technology.

The invention provides the following technical scheme: the utility model provides an improve dissolved oxygen volume's fermentation cylinder rabbling mechanism, which comprises a tank body, the inside of the jar body is provided with the transmission shaft, the lower part fixed position of transmission shaft installs the one-level disc, fixed mounting has the one-level paddle on the one-level disc, the upper portion fixed position of transmission shaft installs the second grade disc, the lower surface of second grade disc is the curved surface setting, the inside of second grade disc is provided with the through-hole, fixed mounting has the second grade paddle on the second grade disc, the bell mouth has all been seted up with the inside of second grade paddle to the one-level paddle, the macrostoma of bell mouth sets up on the rotation direction of transmission shaft.

Preferably, the aperture of the tapered hole on the secondary blade is half of the aperture of the tapered hole on the primary blade.

Preferably, the middle position of transmission shaft is provided with two-way screw thread, movable mounting has on the two-way screw thread dials the board, dial the inside of board and seted up the drain hole.

The invention has the following beneficial effects:

1. the invention leads the large bubbles which gradually rise from the bottom of the tank to be cut by the rotation of the first-stage paddle and the second-stage paddle through the arrangement of the first-stage stirring paddle and the second-stage stirring paddle, and the air bubbles in the middle of the paddle can be wrapped by the rotating paddle to pass through the conical hole in the paddle, because the aperture of the tapered hole is gradually reduced, the pressure borne by the bubbles in the tapered hole is gradually increased, further breaking and dispersing the bubbles into smaller bubbles, improving the dissolved oxygen in the fermentation liquor, then leading the flow velocity of the upper side to be less than that of the lower side when the fermentation liquor flows on the upper side and the lower side of the secondary disc due to the arrangement of the secondary disc, and then pressure difference is generated, so that bubbles above the secondary disc are drawn and transferred to the lower part of the secondary disc from the through hole, and are crushed by the secondary paddle again, and the circulation is performed, so that the utilization rate of air entering the tank body is improved.

2. According to the invention, through the arrangement of the stirring plate, through the up-and-down reciprocating motion of the stirring plate, axial motion is generated in the liquid flow which is driven by the stirring paddle to rotate in the circumferential direction, so that the original relatively stable liquid flow is changed into random flow, the flow layer in the liquid flow is irregular, the surface of bubbles in the liquid flow is subjected to uneven force, and the bubbles are easy to break, so that the dissolved oxygen in the fermentation liquid is further improved, meanwhile, as air enters from the bottom of the tank, the oxygen amount contacted with the fermentation liquid in the lower part of the tank is more, so that the fermentation liquid in the lower part of the tank is fermented more thoroughly, and then the fermentation liquids in the upper part and the lower part are fully mixed through the stirring plate which reciprocates up and down, so that the fermentation liquid in each part in the tank can be fully fermented, and the problem of incomplete fermentation is avoided.

Drawings

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a top view of a first stage stirring paddle of the present invention;

FIG. 3 is a top view of the dial plate of the present invention;

FIG. 4 is a schematic diagram of a two-stage disk of the present invention;

FIG. 5 is a sectional view taken along line A-A in FIG. 4 according to the present invention;

FIG. 6 is a cross-sectional view of the dial plate of the present invention.

In the figure: 1. a tank body; 2. a drive shaft; 3. bidirectional screw threads; 4. dialing a plate; 5. a baffle plate; 6. a first-stage stirring paddle; 61. a first-stage disc; 62. a first-stage paddle; 7. a second-stage stirring paddle; 71. a secondary disc; 72. and (4) secondary blades.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Referring to fig. 1-6, a fermentation tank stirring mechanism for increasing dissolved oxygen comprises a tank body 1, a transmission shaft 2 is arranged inside the tank body 1, a two-way thread 3 is arranged at the middle position of the transmission shaft 2, a shifting plate 4 is movably arranged on the two-way thread 3, a liquid guide hole is arranged inside the shifting plate 4, so that the resistance of liquid received by the shifting plate 4 during reciprocating motion is reduced, meanwhile, the liquid can be divided through the liquid guide hole, so that the flow layer inside the liquid becomes more irregular, the other side of the shifting plate 4 is movably clamped with a baffle 5, the baffle 5 is fixedly arranged on the inner wall of the tank body 1, a first-stage stirring paddle 6 is fixedly arranged at the lower position of the transmission shaft 2, the first-stage stirring paddle 6 consists of a first-stage disc 61 and a first-stage paddle 62, the first-stage disc 61 is fixedly arranged at the lower position of the transmission shaft 2, the first-stage paddle 62 is fixedly arranged on the first-stage disc 61, a second-stage stirring paddle 7 is fixedly arranged at the upper position of the transmission shaft 2, the second-stage stirring paddle 7 is composed of a second-stage disc 71 and a second-stage paddle 72, the second-stage disc 71 is fixedly installed at the upper part of the transmission shaft 2, the lower surface of the second-stage disc 71 is arranged in a curved surface, a through hole is formed in the second-stage disc 71, the second-stage paddle 72 is fixedly installed on the second-stage disc 71, tapered holes are formed in the first-stage paddle 62 and the second-stage paddle 72, the large opening of each tapered hole is arranged as shown in figure 2, the aperture of each tapered hole in the second-stage paddle 72 is one half of that of the tapered hole in the first-stage paddle 62, in the process that bubbles at the bottom of the tank body 1 gradually rise, the bubbles are firstly cut by the transmission shaft 2 to be dispersed into small bubbles, wherein the bubbles at the middle part of the first-stage paddle 62 are clamped by the rotating paddles so as to pass through the tapered holes in the paddles, and the aperture of the tapered holes is gradually reduced, the pressure of the bubbles inside the fermentation tank is gradually increased, so that the bubbles are broken and dispersed into smaller bubbles, the dissolved oxygen in the fermentation liquid is improved, meanwhile, the rotating transmission shaft 2 drives the stirring plate 4 to reciprocate on the bidirectional screw thread 3, axial motion is generated in the liquid flow which is driven to rotate circumferentially by the stirring paddle originally, the original relatively stable liquid flow is changed into turbulent flow, the flow layer inside the liquid flow is irregular, the surface of the bubbles inside the liquid flow is subjected to uneven force, the bubbles are easy to break, the dissolved oxygen in the fermentation liquid is further improved, meanwhile, as air enters from the tank bottom, the oxygen amount contacted by the fermentation liquid on the part of the tank body 1 is more, the fermentation liquid on the part of the tank body 1 is more thoroughly fermented, and then the fermentation liquid on the upper part and the lower part are fully mixed through the stirring plate 4 which reciprocates up and down, the fermentation liquor of each part in the tank body 1 can be fully fermented, so that the problem of incomplete fermentation is avoided, then small bubbles are cut by a second-stage stirring paddle 7 driven by a transmission shaft 2 and are dispersed again through tapered holes, finally the dispersed bubbles float to the upper side of a second-stage disc 71, due to the arrangement of the second-stage disc 71, when the fermentation liquor flows on the upper side and the lower side of the second-stage disc 71, the flow velocity of the upper side is smaller than that of the lower side, so that pressure difference is generated, bubbles above the second-stage disc 71 are drawn and transferred to the lower side of the second-stage disc 71 from through holes and are broken by a second-stage paddle 72 again, and the circulation is carried out, so that the utilization rate of air entering the tank body 1 is improved.

The use method (working principle) of the invention is as follows:

when the fermentation tank works, firstly, fermentation liquor is added into the tank body 1, then the motor works, the motor drives the transmission shaft 2 to rotate, the transmission shaft 2 drives the first-stage stirring paddle 6 and the second-stage stirring paddle 7 to synchronously rotate, further, the fermentation liquor circumferentially rotates, meanwhile, the transmission shaft 2 rotates, so that the bidirectional threads 3 synchronously rotate, further, the shifting plate 4 reciprocates up and down, finally, air is introduced into the bottom of the tank body 1, the air forms bubbles in the fermentation liquor, the bubbles gradually rise due to liquid buoyancy, in the rising process of the bubbles, the bubbles are firstly contacted with the first-stage stirring paddle 6, the first-stage stirring paddle 6 rotationally cuts the bubbles at the edge position of the paddle, the bubbles are dispersed into small bubbles, the bubbles at the middle position of the paddle are wrapped and clamped into the tapered holes in the tank body by the rotating first-stage paddle 62, and the pressure of the bubbles in the tank body is gradually increased due to the gradual reduction of the aperture of the tapered holes, further crushing and dispersing, simultaneously exchanging and mixing the fermentation liquor of the upper part and the lower part of the tank body 1 by the poking plate 4 which reciprocates up and down, in the process, the original steady flow moving in the circumferential direction is broken up and further changed into turbulent flow, so that the force applied to the surface of the bubbles in the liquid flow is uneven, the bubbles are easy to break, then the bubbles broken by the first-stage stirring paddle 6 continuously float upwards, further contacting with the second-stage stirring paddle 7, further crushing and dispersing the bubbles by the second-stage paddle 72 and the tapered holes, floating the dispersed bubbles above the second-stage disc 71, due to the arrangement of the secondary disc 71, when the fermentation liquor flows on the upper side and the lower side of the secondary disc 71, the flow velocity of the upper side is less than that of the lower side, and then the pressure difference is generated, so that air bubbles above the secondary disc 71 are pulled and transferred to the lower part of the secondary disc 71 from the through hole, and are broken by the secondary paddle 72 again, and the work cycle is completed.

It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides an improve dissolved oxygen volume's fermentation cylinder rabbling mechanism, includes a jar body (1), its characterized in that: the inside of the jar body (1) is provided with transmission shaft (2), the lower part fixed position of transmission shaft (2) installs one-level disc (61), fixed mounting has one-level paddle (62) on one-level disc (61), the upper portion fixed position of transmission shaft (2) installs second grade disc (71), the lower surface of second grade disc (71) is the curved surface setting, the inside of second grade disc (71) is provided with the through-hole, fixed mounting has second grade paddle 72 on second grade disc (71), the bell mouth has all been seted up with the inside of second grade paddle (72) to one-level paddle (62), the macrostoma of bell mouth sets up on the rotation direction of transmission shaft (2).

2. The stirring mechanism of the fermentation tank for increasing the dissolved oxygen in claim 1, wherein: the aperture of the conical hole on the secondary blade (72) is one half of that of the conical hole on the primary blade (62).

3. The stirring mechanism of the fermentation tank for increasing the dissolved oxygen in claim 1, wherein: the middle position of transmission shaft (2) is provided with two-way screw thread (3), movable mounting has group board (4) on two-way screw thread (3), the liquid guide hole has been seted up to the inside of group board (4).