Microbial fermentation tank

Abstract

The utility model relates to the field of microbial fermentation, in particular to a microbial fermentation tank which comprises a fermentation tank body, an air inlet pipe, an annular distributor and a stirring mechanism, the annular distributor is arranged in the fermentation tank body, the air inlet pipe is arranged at the bottom of the fermentation tank body, and the air inlet pipe is communicated with the annular distributor; the stirring mechanism comprises a driving device and a stirring rod, the driving device is arranged at the top of the fermentation tank body, one end of the stirring rod is connected with the driving device, and the other end extends into the fermentation tank body; vent holes which are uniformly distributed are formed in the top of the annular distributor, and at least two microbubble generators are arranged at the bottom of the annular distributor. The top of the annular distributor is provided with a plurality of rows of vent holes, the bottom of the annular distributor is provided with a plurality of microbubble generators, and oxygen is supplied to the upper part and the bottom of the fermentation tank simultaneously, so that the liquid flowing state at the bottom of the fermentation tank body is ensured; the growth of microorganisms at the bottom of the fermentation tank body is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of microbial fermentation, specifically to a microbial fermentation tank. BACKGROUND

[0002] The fermentation tank is a device used for microbial fermentation in industry, and is widely applied in the research in the fields of biological medicine, microbial fertilizer and the like. The traditional fermentation tank is generally provided with an air distributor at the bottom of the fermentation tank. The pipeline is made into a circular ring, and a plurality of small holes are formed at the top of the circular ring. Air enters the circular ring pipeline and comes out through the small holes to be dispersed in the fermentation tank. However, the annular distributor causes the air to flow upward in a ring shape, which makes the air in the middle of the fermentation tank not well dispersed, and thus mechanical stirring needs to be performed at the same time.

[0003] For example, the Chinese utility model patent with the authorization announcement CN212532980U discloses a fermentation tank with a novel air distributor, which comprises a fermentation tank body with a feeding port and a discharging port. The feeding port is located at the top end of the fermentation tank, and the discharging port is located at the bottom end of the fermentation tank. The bottom of the fermentation tank body is provided with an annular air distributor. The annular air distributor comprises an annular pipe and an air inlet pipe. The annular pipe is in communication with the air inlet pipe. A plurality of nozzles are arranged on the annular pipe. However, in the scheme, the material at the bottom of the fermentation tank has poor flowability, the material at the bottom does not react sufficiently, and thus the oxygen supply state of the microorganisms at the bottom is not good, and the growth state is poor.

[0004] Therefore, there is an urgent need for a microbial fermentation tank. UTILITY MODEL CONTENTS

[0005] In order to overcome the problems in the prior art, the utility model aims to provide a microbial fermentation tank.

[0006] In order to achieve the above-mentioned purpose, the utility model provides the following technical scheme: a microbial fermentation tank, comprising a fermentation tank body, an air inlet pipe, an annular distributor and a stirring mechanism. The annular distributor is arranged in the fermentation tank body. The air inlet pipe is arranged at the bottom of the fermentation tank body, and the air inlet pipe is in communication with the annular distributor. The stirring mechanism comprises a driving device and a stirring rod. The driving device is arranged at the top of the fermentation tank body. One end of the stirring rod is connected with the driving device, and the other end of the stirring rod extends into the inside of the fermentation tank body.

[0007] The top of the annular distributor is provided with uniformly arranged air holes, and the bottom of the annular distributor is provided with at least two microbubble generators.

[0008] The utility model is further provided as follows: the annular distributor comprises a first annular distributor and a second annular distributor. The first annular distributor is arranged above the second annular distributor.

[0009] The utility model further sets up: first annular distributor and second annular distributor with the air inlet pipe as the axle, coaxial arrangement in the fermentation tank body, first annular distributor and second annular distributor pass through the pipeline and the air inlet pipe communication at axle.

[0010] The utility model further sets up: the microbubble generator of first annular distributor bottom with the axle of fermentation tank body as the center, to the axle direction of fermentation tank body 30 ° setting of inclination.

[0011] The utility model further sets up: the microbubble generator of second annular distributor bottom with the axle of fermentation tank body as the center, to the inner wall direction of fermentation tank body 30 ° setting of inclination.

[0012] The utility model further sets up: high -efficient oxygen supply microorganism fermentation tank still includes curved blade turbine, curved blade turbine sets up on the air inlet pipe between first annular distributor and second annular distributor.

[0013] The utility model further sets up: annular distributor top sets up three rows of vent hole, and three rows the vent hole with annular distributor cross section top as the starting point, respectively to the outside of annular distributor, according to 0 °, 30 °, 60 ° direction tangential uniform arrangement.

[0014] The utility model further sets up: the stirring rod includes connecting section and stirring section, one end of connecting section is connected with the drive arrangement, and the other end is connected with stirring section, and stirring section includes multiple longitudinal support rods, and longitudinal support rod extends to the outside of second annular distributor.

[0015] The utility model further sets up: air inlet pipe is connected with external gas delivery equipment.

[0016] Summarizing, the beneficial effects of the above technical solutions of the utility model are as follows:

[0017] (1) the utility model discloses the annular distributor top sets up multiple vent holes, and the bottom sets up multiple microbubble generators, and simultaneously supplies oxygen to the upper portion and the bottom of fermentation tank, increases the bottom liquid flow state, makes the bottom material fully contact oxygen, is favorable to the bottom microbial growth, realizes the high -efficient oxygen supply of microorganism fermentation tank.

[0018] (2)The utility model discloses two layers annular distributor are set up, and still set up the curved vane turbine between two layers annular distributor, and the gas of the microbubble generator at the bottom of first annular distributor pushes curved vane turbine. The blade of curved vane turbine breaks the gas of the vent hole of second annular distributor top and the downward bubble of microbubble generator at the bottom of first annular distributor into smaller bubble, guarantees the gas dispersion of annular distributor middle part, saves the stirring power, and the shear force of curved vane turbine driven by gas is less, reduces the damage risk to the microorganism cultivated.

[0019] (3)The utility model discloses set up including the stirring mechanism of a plurality of longitudinal support, the bubble of microbubble generator at the bottom of second annular distributor because of the oblique angle of oblique downward, will collide with the bottom of fermentation tank body and bounce to the longitudinal support place, and the bubble is dispersed in the fermentation tank inside after being stirred and sheared by stirring mechanism. Improve material fluidity, and then guarantee the sufficient reaction of microorganism. BRIEF DESCRIPTION OF DRAWINGS

[0020] In order to more clearly illustrate the technical scheme of the embodiment of the utility model, the following will be needed to use the drawing of the embodiment to introduce briefly, and obviously, the drawing in the following description only is some embodiments of the utility model, and for the ordinary skilled person in the art, under the premise of not paying the creative labor, can also obtain other drawings according to these drawings.

[0021] Fig. 1 It is high -efficient oxygen -supplying microorganism fermentation tank whole structure schematic diagram.

[0022] Fig. 2 It is annular distributor upper vent hole distribution schematic diagram.

[0023] In the drawing, the component list represented by each sign is as follows:

[0024] 1, fermentation tank body, 2, annular distributor, 21, first annular distributor, 22, second annular distributor, 23, microbubble generator, 24, vent hole, 3, inlet pipe, 4, curved vane turbine, 5, drive arrangement, 51, connecting section, 52, support. DETAILED DESCRIPTION

[0025] To enable those skilled in the art to better understand the technical solution of this utility model, the technical solution of this utility model will be clearly and completely described below with reference to the accompanying drawings. Based on the embodiments of this utility model, other similar embodiments obtained by those skilled in the art without creative effort should all fall within the protection scope of this utility model. Furthermore, directional terms mentioned in the following embodiments, such as "up," "down," "left," and "right," are only for reference to the directions in the accompanying drawings; therefore, the directional terms used are for illustrative purposes and not for limiting the scope of this utility model.

[0026] The present invention will be further described below with reference to the accompanying drawings and preferred embodiments.

[0027] Example:

[0028] like Figs. 1-2 As shown in the preferred embodiment of this utility model, a microbial fermenter includes a fermenter body 1, an air inlet pipe 3, an annular distributor 2, and a stirring mechanism; the annular distributor 2 is disposed inside the fermenter body 1, the air inlet pipe 3 is disposed at the bottom of the fermenter body 1, and the air inlet pipe 3 is connected to the annular distributor 2; the stirring mechanism is disposed at the top of the fermenter body 1; the air inlet pipe 3 is connected to an external gas conveying device.

[0029] The top of the annular distributor 2 is provided with evenly arranged vent holes 24, and the bottom of the annular distributor 2 is provided with at least two microbubble generators 23.

[0030] The number of microbubble generators 23 is set according to the diameter (DN) of the fermenter body 1. If DN≤1000mm, two microbubble generators 23 are set at the bottom of the annular distributor 2. If DN>1000mm, the diameter of the annular distributor 2 increases accordingly, the circumference of the annular distributor 2 also increases accordingly, and the number of microbubble generators 23 increases with the increase of the circumference of the annular distributor. The microbubble generators 23 are evenly arranged along the circumference of the annular distributor 2 at a spacing of 1000mm~1200mm.

[0031] The annular distributor 2 includes a first annular distributor 21 and a second annular distributor 22. The first annular distributor 21 is disposed above the second annular distributor 22, and the first annular distributor 21 and the second annular distributor 22 are connected through the air intake pipe 3.

[0032] The first annular distributor 21 and the second annular distributor 22 are coaxially arranged with the air inlet pipe 3 as the axis; the first annular distributor 21 and the second annular distributor 22 are connected to the air inlet pipe 3 at the axis through pipelines.

[0033] The microbubble generator 23 at the bottom of the first annular distributor 21 is inclined at 30° to the axis of the fermenter body 1 with the axis of the fermenter body 1 as the center. The high-efficiency oxygen-supplying microbial fermenter also includes a curved blade turbine 4, which is disposed on the air inlet pipe 3 between the first annular distributor 21 and the second annular distributor 22.

[0034] The gas generated by the downward-sloping microbubble generator 23 at the bottom of the first annular distributor 21 drives the curved turbine 4. The blades of the curved turbine 4 break up the upward-sloping gas from the vent 24 at the top of the second annular distributor 22 and the downward-sloping bubbles generated by the microbubble generator 23 at the bottom of the first annular distributor 22 into smaller bubbles.

[0035] The microbubble generator 23 at the bottom of the second annular distributor 22 is set at an angle of 30° towards the inner wall of the fermenter body 1 with the axis of the fermenter body 1 as the center.

[0036] The stirring mechanism includes a driving device 5 and a stirring rod. The driving device 5 is located on the top of the fermentation tank body 1. One end of the stirring rod is connected to the driving device 5, and the other end extends into the interior of the fermentation tank body 1.

[0037] The stirring rod includes a connecting section 51 and a stirring section; one end of the connecting section 51 is connected to the driving device 5, and the other end is connected to the stirring section; the stirring section includes a plurality of longitudinal support rods 52, which extend to the outside of the second annular distributor 22.

[0038] like Fig. 2 As shown, the annular distributor 2 has three rows of vent holes 24 on its top. These vent holes 24 are evenly arranged tangentially at 0°, 30°, and 60° directions, starting from the top of the cross-section of the annular distributor 2. The inclined arrangement of the vent holes 24 allows for a wider diffusion range of the bubbles generated at the top of the annular distributor 2. Furthermore, within this angle range, the bubbles generated are within the shear cyclone of the curved turbine 4 or the stirring rod, ensuring that the material fully contacts oxygen.

[0039] In actual use, the external gas delivery equipment supplies gas to the annular distributor 2 through the air inlet 3. The gas generated by the microbubble generator 23 at the bottom of the first annular distributor 21 drives the curved turbine 4. The blades of the curved turbine 4 break up the upward-flowing gas from the vent 24 at the top of the second annular distributor 22 and the downward-flowing bubbles generated by the microbubble generator 23 at the bottom of the first annular distributor 21 into smaller bubbles. This ensures that the gas in the middle part of the annular distributor 2 is dispersed, while saving stirring power. Furthermore, the shearing force of the gas-driven curved turbine is relatively small, reducing the risk of damage to the cultured microorganisms. The bubbles generated by the microbubble generator 23 at the bottom of the second annular distributor 22 collide with the bottom of the fermenter body 1 and bounce back to the longitudinal support rod 52. The stirring mechanism then drives the bubbles to be stirred and sheared, dispersing them inside the fermenter. The support rod 52 of the stirring mechanism extends to the outside of the second annular distributor 22, allowing the stirring rod of the stirring mechanism to cover the outside of the annular distributor 2, increasing the stirring range, improving material flowability, and thus ensuring the full reaction of the microorganisms.

[0040] Finally, it should be noted that the above content is only used to illustrate the technical solution of this utility model, and is not intended to limit the scope of protection of this utility model. Simple modifications or equivalent substitutions made by those skilled in the art to the technical solution of this utility model do not depart from the essence and scope of the technical solution of this utility model.

Claims

1. A microbial fermenter comprising a fermenter body, a gas inlet tube, an annular distributor and a stirring mechanism; characterised in that, The ring distributor is arranged in the fermentation tank body, the gas inlet pipe is arranged at the bottom of the fermentation tank body, and the gas inlet pipe is in communication with the ring distributor; the stirring mechanism comprises a driving device and a stirring rod, the driving device is arranged at the top of the fermentation tank body, one end of the stirring rod is connected with the driving device, and the other end of the stirring rod extends into the interior of the fermentation tank body; The top of the ring distributor is provided with uniformly arranged air holes, and the bottom of the ring distributor is provided with at least two microbubble generators; The ring distributor comprises a first ring distributor and a second ring distributor, and the first ring distributor is arranged above the second ring distributor. The microbial fermentation tank further comprises a curved blade turbine, and the curved blade turbine is arranged on the gas inlet pipe between the first ring distributor and the second ring distributor. The gas generated by the microbubble generator at the bottom of the first ring distributor drives the curved blade turbine to rotate.

2. The microorganism fermenter according to claim 1, wherein The first ring distributor and the second ring distributor are coaxially arranged in the fermentation tank body with the gas inlet pipe as the axis; the first ring distributor and the second ring distributor are in communication with the gas inlet pipe at the axis through pipelines.

3. A microorganism fermenter according to claim 2, wherein The microbubble generator at the bottom of the first ring distributor is arranged to be inclined to the axis of the fermentation tank body by 30°.

4. The microorganism fermenter according to claim 3, wherein The microbubble generator at the bottom of the second ring distributor is arranged to be inclined to the inner wall of the fermentation tank body by 30°.

5. The microorganism fermenter according to claim 1, wherein Three rows of air holes are formed in the top of the ring distributor, and the three rows of air holes are tangentially and uniformly arranged in the directions of 0°, 30° and 60° from the top end of the cross section of the ring distributor to the outside of the ring distributor.

6. The microorganism fermenter according to claim 1, wherein The stirring rod comprises a connecting section and a stirring section; one end of the connecting section is connected with the driving device, and the other end of the connecting section is connected with the stirring section; the stirring section comprises a plurality of longitudinal support rods, and the longitudinal support rods extend to the outside of the second ring distributor.

7. The microorganism fermenter according to claim 1, wherein The gas inlet pipe is connected with an external gas conveying device.

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