Special air distributor for xanthan gum fermentation tank

Abstract

The utility model discloses a special air distributor for a xanthan gum fermentation tank, which comprises a tank body and a stirrer, the bottom wall of the tank body is provided with an air distributor with a suspended bottom through support legs, and the air distributor is communicated with an air inlet pipeline capable of leading airflow to enter through a certain angle; the top of the barrel is provided with a bowl-shaped dispersing net, the top of the dispersing net is provided with a large round opening, and the periphery of the dispersing net is an inclined surface which inclines outwards. According to the special air distributor for the xanthan gum fermentation tank, airflow enters in a cyclone manner and is cut and distributed through the dispersion net and the annular net of the air distributor, so that multi-path output of gas is realized, all gas can be dispersed to a stirrer, a good gas treatment effect in the whole tank is facilitated, a stable liquid level is favorably maintained, and the service life of the whole tank is prolonged. And the problems of liquid level fluctuation and foam caused by overlarge airflow are reduced, and air waste is reduced.

Description

Technical Field

[0001] The utility model relates to an air distribution device, in particular to an air distributor for a xanthan gum production fermenter. Background Art

[0002] An air distributor is an important component in bio-fermentation engineering equipment, mainly used for gas-liquid mixing, increasing dissolved oxygen, reducing the power consumption of mechanical stirring, etc. The accurate distribution of sterile air also helps to maintain the sterile environment in the fermenter and reduce the chance of contamination caused by external pollution, which is particularly important for fermentation products with high purity requirements. Currently, the commonly used ones in the industry include single-tube direct blowing type, annular tube perforated type, jet tube type, etc. The single-tube direct blowing type has a relatively simple structure, but the gas output is disordered without direction, resulting in an uncontrolled gas-liquid flow field and making it difficult to effectively disperse the gas introduced into the tank. The perforated annular tube type installs the air annular tube below the agitator at about 0.35 times the container diameter and 0.7 times the agitator diameter, and holes are opened on the air pipe. Although the flow field is controlled, the dense small holes are easily blocked, and the disinfection is likely to be incomplete, causing contamination. The jet tube type installs multiple Venturi tubes on the annular distributor, which can effectively control the gas-liquid flow field. However, since the distributor is installed near the disk agitator, it is easily torn by force during the operation of the agitator, posing an operating risk. Through comprehensive analysis, to achieve a better air dispersion effect with the distributors currently used in the industry, the design complexity increases, resulting in difficulties in maintenance and cleaning, high usage costs, and certain operating risks. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a special air distributor for a xanthan gum fermenter to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the utility model provides the following technical solutions:

[0005] A special air distributor for a xanthan gum fermenter includes a tank body and an agitator. The bottom wall of the tank body is installed with an air distributor suspended at the bottom through a support leg, and an air inlet pipeline is connected to the air distributor and can cut into the air flow at a certain angle.

[0006] The air distributor includes a cylinder body and a dispersion net, and the dispersion net is installed at the top of the cylinder body.

[0007] As a further scheme of the utility model: the dispersion net is in a bowl shape, with a large round opening at the top and an inclined surface tilting outward at the periphery.

[0008] As a further scheme of the utility model: the periphery of the dispersion net is supported and fixed to the cylinder body through a support arm, and the bottom of the dispersion net extends into the cylinder body.

[0009] As a further solution of the present utility model: There is a gap between the cylinder body and the dispersion net, and the gap is sealed by an annular net. During the upward air flotation process, the air flow can be diverted from the peripheral gap of the dispersion net and cut by the annular net.

[0010] As a further solution of the present utility model: The air distributor further includes a conical part, the conical part is installed at the bottom of the cylinder body, and a conical opening is provided at the bottom end of the conical part.

[0011] As a further solution of the present utility model: Gravity balls are arranged inside the conical part, the diameter of the gravity balls is larger than the diameter of the conical opening, and the gravity balls can seal the conical opening under the action of gravity.

[0012] As a further solution of the present utility model: The intake pipeline includes a swirl tube, a conical tube and an air supply pipe. The air distributor is connected to the air supply pipe through the swirl tube and the conical tube. A flange ring is arranged outside the air supply pipe. The small-diameter end of the conical tube is connected to the swirl tube, and the large-diameter end is connected to the air supply pipe.

[0013] As a further solution of the present utility model: It further includes a flow splitting device used in cooperation with the air distributor;

[0014] The flow splitting device includes a flow splitting plate, a sleeve, a nut and a screw rod. A plurality of evenly distributed flow splitting plates are installed outside the sleeve. The nut is fixed at the center position of the dispersion net. The screw rod passes through the center of the sleeve and is threadedly connected to the nut to fix the flow splitting device on the dispersion net.

[0015] Compared with the prior art, the beneficial effects of the present utility model are:

[0016] For the special air distributor of the xanthan gum fermentation tank, the air flow enters in a cyclone manner and is cut and distributed by the dispersion net and the annular net of the air distributor, realizing multi-way output of gas, ensuring that all gases can be dispersed to the stirrer, being beneficial to having a good gas treatment effect in the whole tank, helping to maintain a stable liquid level, reducing the liquid level fluctuation and foam problems caused by too large air flow, and reducing air waste. Description of the Drawings

[0017] Figure 1 It is an installation schematic diagram of a special air distributor for a xanthan gum fermentation tank;

[0018] Figure 2 It is a structural schematic diagram of a special air distributor for a xanthan gum fermentation tank;

[0019] Figure 3 It is a structural schematic diagram of the flow splitting device in a special air distributor for a xanthan gum fermentation tank;

[0020] Figure 4 It is a structural assembly schematic diagram of the flow splitting device in a special air distributor for a xanthan gum fermentation tank.

[0021] In the figure: 1, tank body; 2, agitator; 3, support feet; 4, air distributor; 401, cylinder body; 402, dispersion net; 403, support arm; 404, annular net; 405, conical part; 406, gravity ball; 5, intake pipeline; 501, swirl tube; 502, conical tube; 503, air supply pipe; 504, flange ring; 6, flow splitting device; 601, flow splitting plate; 602, sleeve; 603, nut; 604, lead screw. Specific implementation manner

[0022] Please refer to Figures 1 to 4 , in an embodiment of the present utility model, a special air distributor for xanthan gum fermenter includes a tank body 1 and an agitator 2. The bottom wall of the tank body 1 is installed with an air distributor 4 suspended at the bottom through support feet 3. An intake pipeline 5 is connected to the air distributor 4, which can cut the air flow at a certain angle:

[0023] The air distributor 4 includes a cylinder body 401 and a dispersion net 402. The dispersion net 402 is installed at the top of the cylinder body 401. The air flow cuts into the air distributor 4 at a certain angle through the intake pipeline 5, forming a cyclone inside the cylinder body 401 of the air distributor 4. The air flow spirally ascends inside the cylinder body 401 and is cut and dispersed into the tank body 1 by the dispersion net 402. After the air flow spirally ascends, the flow rate can be reduced, achieving a better pre-dispersion effect, and the gas dispersion is relatively uniform.

[0024] In a preferred implementation manner, the dispersion net 402 is in a bowl shape, with a large round opening at the top and an inclined surface tilting outward at the periphery. The dispersion net 402 is a cylinder structure for guiding air. With the structure of the upper large round opening and the lower cone, the flow rate can be further reduced after the air flow spirally ascends, and the bubbles can be cut on a larger surface.

[0025] In a preferred implementation manner, the periphery of the dispersion net 402 is supported and fixed to the cylinder body 401 through a support arm 403. The bottom of the dispersion net 402 extends into the cylinder body 401. There is a gap between the cylinder body 401 and the dispersion net 402, and the gap is sealed by an annular net 404. The air flow can be split out from the peripheral gap of the dispersion net 402 during the upward air flotation process. After the air flow is cut by the annular net 404, due to the design of the inclined surface at the periphery of the dispersion net 402, under the action of the air flow, the bubbles can be guided to a farther distance, expanding the distribution range.

[0026] In a preferred implementation manner, the air distributor 4 further includes a conical part 405. The conical part 405 is installed at the bottom of the cylinder body 401, and a conical opening is provided at the bottom end of the conical part 405. When the ventilation production ends, a through-flow is formed up and down, which can achieve no gas-liquid residue inside the cylinder body 401, making the cleaning convenient and more conducive to thorough disinfection.

[0027] In a preferred embodiment, a gravity ball 406 is disposed inside the conical portion 405. The diameter of the gravity ball 406 is larger than the diameter of the conical opening. Under the action of gravity, the gravity ball 406 can seal the conical opening. During the ventilation process, under the action of air pressure and fluid, the gravity ball 406 seals the conical opening. The gravity of the gravity ball 406 is greater than the buoyancy of the liquid, which can effectively prevent air flow from leaking downward through the conical opening during the ventilation process.

[0028] In a preferred embodiment, the intake pipeline 5 includes a cyclone tube 501, a conical tube 502, and an air supply pipe 503. The air distributor 4 is connected to the air supply pipe 503 through the cyclone tube 501 and the conical tube 502. A flange ring 504 is disposed outside the air supply pipe 503. The small-diameter end of the conical tube 502 is connected to the cyclone tube 501, and the large-diameter end is connected to the air supply pipe 503. When the air flow enters the interior of the cylinder body 401, secondary pressurization is performed through the conical tube 502, so that the air flow can form a better cyclone state when entering the interior of the cylinder body 401.

[0029] In a preferred embodiment, a flow splitting device 6 used in cooperation with the air distributor 4 is further included;

[0030] The flow splitting device 6 includes a flow splitting plate 601, a sleeve 602, a nut 603, and a lead screw 604. A plurality of evenly distributed flow splitting plates 601 are installed outside the sleeve 602. The nut 603 is fixed at the center position of the dispersion net 402. The lead screw 604 passes through the center of the sleeve 602 and is threadedly connected to the nut 603 to fix the flow splitting device 6 on the dispersion net 402. The detachable flow splitting device 6 can further distribute the air, so that the air flow is evenly distributed before entering the agitator 2.

[0031] The uppermost part adopts an interface with the dispersion net 402 to achieve multi-path gas output, ensuring that all gases can be dispersed to the disc of the agitator 2 and the direction of the agitator 2, which is beneficial to achieving good gas treatment effect in the whole tank, helping to maintain a stable liquid level, reducing the liquid level fluctuation and foam problems caused by excessive air flow. Since the oxygen dissolution efficiency is improved and the temperature control is improved, a better growth environment is provided for microorganisms. By precisely controlling the air flow and distribution, every portion of air and energy can be maximally utilized, waste can be reduced, and the economy of the fermentation process can be improved.

[0032] It should be noted that the above embodiments all belong to the same inventive concept. The descriptions of the embodiments have their own emphases. For the parts not described in detail in individual embodiments, reference can be made to the descriptions in other embodiments.

[0033] The embodiments described above merely represent the implementation modes of the present utility model. The description is relatively specific and detailed, but it should not be construed as a limitation on the scope of the utility model patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present utility model, several modifications and improvements can still be made, and these all fall within the protection scope of the present utility model. Therefore, the protection scope of the present utility model patent shall be subject to the appended claims.

Claims

1. An air distributor for a xanthan gum fermentation tank, comprising a tank body (1) and an agitator (2), characterized in that: The bottom wall of the tank body (1) is provided with an air distributor (4) suspended at the bottom via a support leg (3), and the air distributor (4) is connected to an air intake pipeline (5) capable of cutting air flow at a certain angle: The air distributor (4) comprises a cylinder (401) and a dispersion net (402), and the dispersion net (402) is installed on the top of the cylinder (401).

2. A xanthan gum fermentation tank special air distributor according to claim 1, characterized in that: The dispersion net (402) is bowl-shaped, with a large round opening on the top and an outer periphery that is inclined outward.

3. A special air distributor for xanthan gum fermentation tank according to claim 2, characterized in that, The periphery of the dispersion net (402) is supported and fixed to the cylinder (401) by means of the support arms (403), and the bottom of the dispersion net (402) extends into the cylinder (401).

4. A xanthan gum fermentation tank special air distributor according to claim 3, characterized in that: There is a gap between the cylinder (401) and the dispersion net (402), and the gap is sealed by the annular net (404). During the upward flotation process, the airflow can be diverted from the outer gap of the dispersion net (402) and cut through the annular net (404).

5. A special air distributor for xanthan gum fermentation tank according to claim 1, characterized in that: The air distributor (4) further comprises a cone (405), the cone (405) being mounted at the bottom of the cylinder (401), and a cone opening being arranged at the bottom end of the cone (405).

6. A special air distributor for xanthan gum fermentation tank according to claim 5, characterized in that: A gravity ball (406) is arranged inside the cone portion (405); the diameter of the gravity ball (406) is greater than the diameter of the cone opening; the gravity ball (406) can seal the cone opening under the action of gravity.

7. A special air distributor for xanthan gum fermentation tank according to claim 1, characterized in that: The air inlet pipeline (5) comprises a swirl tube (501), a tapered tube (502) and an air supply tube (503); the air distributor (4) is connected to the air supply tube (503) via the swirl tube (501) and the tapered tube (502); a flange ring (504) is provided on the outside of the air supply tube (503); a small-diameter end of the tapered tube (502) is connected to the swirl tube (501), and a large-diameter end is connected to the air supply tube (503).

8. A special air distributor for xanthan gum fermentation tank according to claim 1, characterized in that: It also includes a flow distribution device (6) used in conjunction with the air distributor (4); The flow dividing device (6) comprises a flow dividing plate (601), a sleeve (602), a nut (603) and a screw rod (604). A plurality of evenly distributed flow dividing plates (601) are installed outside the sleeve (602). The nut (603) is fixed at the center of the dispersion net (402). The screw rod (604) passes through the center of the sleeve (602) and is threadedly connected to the nut (603) to fix the flow dividing device (6) on the dispersion net (402).

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