Gas distributor, gas distribution system and corresponding biological reaction equipment

Abstract

The utility model relates to a gas distributor, gas distribution system and corresponding biological reaction equipment, said gas distributor comprises: intake pipe, gas distribution big ring, gas outlet pipeline, gas refinement ware etc. The device can increase the fine degree of gas outlet and gas outlet area, improve the dissolved oxygen content, and can adjust the direction of gas outlet according to the actual demand, and improve the oxygen content. The biological reaction effect is improved, and the application prospect is wide.

Description

TECHNICAL FIELD

[0001] The utility model relates to a kind of gas distributors, specifically to a kind of gas distributor for biological reaction device, gas distribution system and corresponding biological reaction equipment. BACKGROUND

[0002] Biological reaction (such as fermentation) is a means to obtain a variety of substances, and many biological reaction processes in production need to provide oxygen. Traditional liquid reaction tanks usually use an air distribution pipe to extend into the tank bottom for gas supply, and air cannot be uniformly distributed, resulting in uneven growth of bacteria and uneven biological reaction, and oxygen utilization rate is not high. In some cases, people add stirring structures to the reaction tank to improve oxygen uniformity, but on the one hand, stirring cannot guarantee uniform dispersion of gas, and on the other hand, heat is generated when the stirring speed is high, affecting the temperature in the tank. There are also disc or ring-shaped gas distribution devices in the prior art, but the number of air outlet holes on the disc or ring is limited, and when adjusting the air volume according to different biological reaction requirements, only the air inlet speed can be controlled for adjustment. When the aeration speed is slowed down, the reaction liquid is easy to flow back into the aeration pipe and block the pipe, and large air bubbles are often formed at the outlet hole, reducing the dissolved oxygen content and resulting in poor aeration effect. In addition, since the sample inlet of the biological reaction tank is usually small, and the commonly used gas distribution device is placed in the tank from the sample inlet, when the traditional disc or ring-shaped gas outlet device is used, its size cannot exceed the size of the sample inlet, i.e. the size of the gas distribution device is small, and the coverage area of the gas outlet hole is also small, which also hinders the improvement of aeration effect.

[0003] The existing gas supply and outlet pipes are arranged in one plane, on the one hand, when ring-shaped pipes or combined ring-shaped pipes are used for gas outlet, since there are multiple connections between the pipes, the distribution of outlet holes is affected, and the outlet area is reduced, and when disc-shaped gas outlet devices are used, there are problems of uneven gas outlet pressure and uneven gas outlet volume distribution; on the other hand, gas outlet usually only uses the opening method, and the gas ejection direction is fixed and cannot be adjusted, which cannot adapt to different aeration requirements. Therefore, there is a great need to develop a gas distribution device with better gas distribution effect and capable of meeting more aeration requirements. SUMMARY

[0004] To solve the above problems, the present application provides a gas distributor, a gas distribution system and corresponding biological reaction equipment, wherein the gas distributor has the advantages of good gas outlet effect, easy disassembly and assembly, and suitability for various aeration requirements.

[0005] The utility model discloses a first aspect provides a kind of gas distributor, the gas distributor includes: air inlet pipe, gas distribution big ring, gas outlet pipeline, gas refiner;

[0006] The gas inlet pipe is communicated with the external gas supply device at one end and communicated with the gas distribution ring at the other end, and is used for conveying the external gas into the gas distribution ring.

[0007] The gas distribution ring is a hollow annular pipeline.

[0008] The gas outlet pipeline has a plurality of gas outlet pipes, and each gas outlet pipe is communicated with at least one place of the gas distribution ring.

[0009] The gas distribution ring and the gas outlet pipeline are in a stacking relationship.

[0010] The length direction of the gas outlet pipeline is the radial direction of the gas distribution ring.

[0011] Further, the gas outlet pipeline is distributed with a plurality of gas outlet holes on the surface parallel to the cross section of the gas distribution ring, and at least part of the gas outlet holes are provided with the gas refining structure; or the gas outlet pipeline is distributed with a plurality of connecting pipes, and the connecting pipes are connected with the gas refiner.

[0012] Further, the connecting pipe is a straight pipe or an elbow pipe, and the gas outlet direction of the gas refiner can be adjusted through the connecting pipe.

[0013] Further, the surface of the gas refiner comprises a porous structure, the porous structure is a sheet, and the material is selected from one or more of stainless steel, ceramic, resin and plastic, preferably stainless steel or ceramic.

[0014] Further, the plurality of gas outlet pipelines are uniformly and spacedly arranged.

[0015] The shape of the gas outlet pipeline is linear or annular.

[0016] When the gas outlet pipeline is linear, it is arranged in a radial manner relative to the center area.

[0017] When the gas outlet pipeline is annular, the width of the surface on which the gas outlet holes are arranged gradually increases in the length direction.

[0018] Further, the outermost edge of all the gas outlet pipelines away from the center area in the length direction is formed into a first contour in a circular shape, and preferably the diameter of the first contour is greater than the diameter of the gas distribution ring.

[0019] Further, the cross-sectional shape of the gas distribution ring is circular, oval, square, polygonal or flower-shaped, preferably circular.

[0020] The gas outlet pipeline is in a closed loop shape, and preferably, a cross section of the gas outlet pipeline parallel to a cross section of the gas distribution large ring is in a shape selected from one of a water drop shape, a triangle shape, a petal shape, an isosceles trapezoid shape, and an oval shape.

[0021] Alternatively, the gas outlet pipeline is in a linear shape, and a cross section of the gas outlet pipeline parallel to a cross section of the gas distribution large ring is in a shape selected from one of a straight line, an arc line, and a broken line.

[0022] Further, the gas distribution large ring is composed of detachable pipeline parts; and / or,

[0023] The gas outlet pipeline is composed of detachable pipeline parts; and / or,

[0024] The gas outlet pipeline is detachably installed to the gas distribution large ring.

[0025] Further, at least part of the gas outlet holes are provided with detachable plugs; preferably, the gas refining structures and the plugs are alternately arranged; the plug is a plug with a waterproof function, preferably a stainless steel plug, a plastic plug, or a silica gel plug.

[0026] The utility model also provides a gas distribution system, the gas distribution system includes the gas distributor of preceding described first aspect, and gas pump.

[0027] The utility model also provides a biological reaction device, the biological reaction device includes the gas distributor or the gas distribution system of preceding described first aspect or second aspect, and fermentation tank body, the gas distributor is installed in the inside of the tank body.

[0028] Compared with the prior art, the utility model has at least the following advantages and beneficial effects:

[0029] 1. The gas distributor provided by the utility model has a gas distribution large ring, a gas outlet pipeline and a gas refiner in a stacked relationship, compared with a traditional gas distribution device, can provide a larger gas outlet area, can ensure that the pressure of each gas outlet part is balanced and the gas outlet amount is stable, and can provide a better ventilation effect.

[0030] 2. The gas distributor provided by the utility model, through setting multiple gas outlet pipelines which are directly communicated with the gas distribution big ring, the gas entering the gas distribution big ring can be evenly distributed to each gas outlet pipeline, so that the gas outlet is more uniform, and at the same time, the length direction of the gas outlet pipeline is the radial direction of the gas distribution big ring, so that multiple gas outlet components (gas refiner) arranged on the horizontal surface of each gas outlet pipeline can cover different positions in the radial direction of the gas distribution big ring as much as possible, so that the overall profile of the whole gas distributor can be more easily close to the reaction tank body, the gas outlet area of the gas outlet pipeline can be more easily ensured to cover the cross section of the tank body, the overall structure can improve the contact area of air and reaction liquid while ensuring the uniformity of the gas outlet, and is more conducive to biological reaction.

[0031] 3. The gas distributor provided by the utility model, through setting the gas refiner at the end of the gas outlet pipeline, the functions of pressurization and air refinement are achieved, the air released after the gas refiner is more delicate and uniform, the dissolved oxygen content in the fermentation liquid is improved, and biological reaction is facilitated. And, the connecting pipe with variable direction is adopted, so that the direction of the gas outlet of the gas refiner can be adjusted, so that the air ejection direction can be adjusted according to the biological reaction requirement, so that biological reaction is more facilitated. At the same time, the gas distributor can be connected with the connecting pipe in a detachable mode, and is convenient to detach and clean.

[0032] 4. The gas distributor provided by the utility model, through setting the gas distribution big ring and the gas outlet pipeline which can be split and easily assembled, the size limitation problem of the traditional integrated gas distribution disc or ring is further overcome, the overall profile can be as close as possible to the fermentation tank body, the gas outlet area can be more easily increased, the ventilation amount is improved, the gas distribution is more uniform, and assembly, disassembly and maintenance are facilitated.

[0033] 5. The utility model also provides a gas distribution system and a biological reaction device corresponding to the gas distributor, in the above system or device, the gas distribution uniformity and the dissolved oxygen content are improved by using the gas distributor of the utility model, installation and cleaning are facilitated, and the biological reaction effect and work efficiency are greatly improved.

[0034] It should be understood that, within the scope of the present application, each of the above technical features of the present application and each of the technical features specifically described below (such as the embodiments) can be combined with each other to form a new or preferred technical scheme. Due to the limited length, they will not be listed one by one here. BRIEF DESCRIPTION OF DRAWINGS

[0035] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description only constitute some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained without creative labor.

[0036] Figure 1 is a structural schematic diagram of an embodiment of the device of the present application;

[0037] Figure 2 is a side view of an embodiment of the device of the present application;

[0038] Figure 3 is a structural schematic diagram of a gas refiner in the device of the present application (for example, the gas outlet faces upward).

[0039] In the drawings, each reference numeral represents: 1. gas inlet pipe; 2. gas distribution large ring; 3. gas outlet pipeline; 4. gas refiner; 5. connecting pipe; 6. branch pipe; 7. fixing rod DETAILED DESCRIPTION

[0040] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments only constitute some embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0041] The present embodiment provides a gas distributor, which comprises: a gas inlet pipe, a gas distribution large ring, and a gas outlet pipeline.

[0042] One end of the gas inlet pipe is in communication with an external gas supply device, and the other end is in communication with one end of the gas distribution large ring, for conveying external gas into the gas distribution large ring.

[0043] The gas distribution large ring is a hollow ring-shaped pipeline.

[0044] The gas outlet pipeline has a plurality of gas outlet pipelines, each of which is in communication with at least one place of the gas distribution large ring.

[0045] The length direction of the gas outlet pipeline is the radial direction of the gas distribution large ring.

[0046] The gas distribution large ring and the gas outlet pipeline are in a stacking relationship.

[0047] The gas distributor is a device for delivering external air into the fermentation tank, and the air is uniformly distributed through a plurality of uniformly dispersed air outlets.

[0048] The air inlet pipe is used for delivering air in the external air delivery device into the gas distributor, and one end of the air inlet pipe is connected with the external air supply device, and the other end is communicated with the main structure of the gas distributor, and specifically communicated with one end of the gas distribution ring, so as to deliver air into the gas distribution ring.

[0049] The gas distribution ring refers to a ring-shaped pipeline with a larger size relative to the single air outlet pipeline connected thereto and other pipelines in the utility model. The gas distribution ring is connected with the air inlet pipe at a certain position of the ring and internally communicated, so as to introduce gas such as air, oxygen, carbon dioxide, etc. and has a plurality of openings on the surface to further input the gas into the air outlet pipeline. It is worth noting that the "ring" in the "ring-shaped pipeline" explained here not only refers to a circular ring, but also refers to a closed curve, for example, a rectangular closed pipeline, which can also be referred to as a ring. The air outlet pipeline is connected and communicated with at least one opening of the gas distribution ring, that is, each air outlet pipeline has at least one communication with the gas distribution ring, so that air can be uniformly introduced into the air outlet holes on each air outlet pipeline and released into the reaction tank. By introducing the gas in the gas distribution ring into the air outlet pipeline in this way, the gas from the gas distribution ring can be quickly and uniformly introduced into the air outlet pipeline under the premise of a certain air outlet hole and jet area, and the speed and uniformity of the air outlet hole can be further guaranteed. That is, the main function of the air outlet pipeline is to increase the area of the air outlet while improving the uniformity of the air outlet, and therefore the shape is not specially limited and can be selected from linear or ring-shaped pipelines (the "ring" here has the same concept as the "ring" described above, that is, any shape of closed pipeline). The linear or ring-shaped pipeline is distributed in a diverging manner relative to the center of the gas distribution ring. For the sake of description, the direction from the center area close to the gas distribution ring to the outside of the gas distribution ring is defined as the length direction of the air outlet pipeline. The length direction of the air outlet pipeline is the radial direction of the gas distribution ring, that is, the length direction of the air outlet pipeline is the same as the radial direction of the gas distribution ring, and the length of the air outlet pipeline can extend from the center area to the circumference of the gas distribution ring, can extend to the inside of the circumference, or can extend out of the circumference.

[0050] The "stacked in sequence" means that the gas distribution torus and the gas outlet pipe are not located in one horizontal plane, but have a layered spatial relationship. For example, from the side, the uppermost layer is the gas distribution torus, the layer below the gas distribution torus is the gas outlet pipe, and the gas outlet pipe and the gas distribution torus can be connected by a certain length of branch pipe to form a stacked level. Alternatively, the position relationship is reversed, that is, from the upper layer to the lower layer, the gas distribution torus and the gas outlet pipe are in reverse order.

[0051] In an example, the gas outlet pipe has a plurality of gas outlet holes distributed on the surface parallel to the cross section of the gas distribution torus, and at least part of the gas outlet holes are provided with the gas refining structure; or the gas outlet pipe has a plurality of connecting pipes connected with the gas refiner. Thus, the gas distribution torus, the gas outlet pipe and the gas refiner can be further "stacked in sequence", for example, from the side, the uppermost layer is the gas distribution torus, the layer below the gas distribution torus is the gas outlet pipe, and the layer below the gas outlet pipe is the gas refiner; or the position relationship is reversed, that is, from the upper layer to the lower layer, the gas refiner, the gas outlet pipe and the gas distribution torus are in reverse order.

[0052] Preferably, the gas outlet direction of the gas refiner is towards the lower part or the upper part of the tank.

[0053] The gas outlet pipe and the gas refiner can be directly connected or connected through a connecting pipe. The connecting pipe is used to pass the gas in the gas outlet pipe into the gas distributor and release it into the bioreactor tank. Each gas outlet hole or connecting pipe on the gas outlet pipe is uniformly arranged on the surface of the gas outlet pipe, and is as uniformly arranged as possible in the diameter length direction of the gas distribution torus, so that the gas outlet components can be arranged as uniformly as possible at different positions in the radial direction from the center area to the periphery, so that the gas outlet can uniformly cover and contact the bioreaction liquid. Further, the specific position of the plurality of connecting pipes connected with the gas outlet pipe can be adjusted, which can be concentrated on one surface (such as the upper surface or the lower surface) of the overall structure of the gas outlet pipe, or can be distributed in different directions of the cross section perpendicular to the gas flow direction, so as to adjust the gas outlet direction of the gas distributor.

[0054] The gas refiner refers to a component that can refine air into very small bubbles. Generally, it is installed at the end of the gas outlet pipe and connected with the gas outlet pipe through a connecting pipe, so that the air finally discharged from the device forms fine and uniform small bubbles, promotes the dissolution of oxygen in the bioreactor tank, thereby increasing the dissolved oxygen content in the bioreaction liquid and improving the bioreaction effect.

[0055] In an example, the connecting pipe is a straight pipe or a bent pipe, which is in communication with the gas outlet pipe and the gas refiner, and the gas outlet direction of the gas refiner can be adjusted through the connecting pipe. Considering the structure of the bioreactor or the different needs of the bioreaction, the gas outlet direction also corresponds to different needs, therefore, by designing the connecting pipe into different shapes, the gas is guided to be sprayed from different directions, that is, the gas outlet direction of the gas refiner can be adjusted to be towards each direction in the bioreactor, so as to better adapt to the needs of the bioreaction.

[0056] In an example, the surface of the gas refiner comprises a porous structure, which is a sheet (also referred to as a refining sheet or a refining net), and the material is selected from one or more of stainless steel, ceramic, resin and plastic, preferably stainless steel or ceramic. Different materials of the gas refiner have different performances or characteristics, in general, the stainless steel structure is resistant to high temperature and high pressure, the ceramic material is not heat-resistant but the bubbles are more delicate and uniform, the resin or plastic material is not resistant to high temperature and is easy to deform, therefore, stainless steel or ceramic is a more preferred material.

[0057] In an example, the plurality of gas outlet pipes are uniformly arranged;

[0058] In an example, the shape of the gas outlet pipe is linear or annular;

[0059] When the gas outlet pipe is linear, it is arranged in a radial manner relative to the central area;

[0060] When the gas outlet pipe is annular, the width of the surface where the gas outlet hole is arranged gradually increases in the length direction.

[0061] The uniform arrangement means that the gas outlet pipes are not completely connected together, nor are they randomly arranged, but are uniformly dispersed in the entire gas distributor required coverage area, so as to provide uniform gas supply effect.

[0062] When the gas outlet pipe is annular, its width gradually expands along the length direction from inside to outside relative to the center of the gas distribution large ring, which can be described as the gas outlet pipe extending like a petal around the gas distribution large ring to expand the overall coverage area and improve the aeration effect. In an example, the outermost edge of the length direction of all the gas outlet pipes is configured as a first circular contour, and the innermost edge of the length direction of all the gas outlet pipes is configured as a second circular contour. The “outermost edge” refers to the point of each gas outlet pipe that is farthest from the center of the gas distribution large ring, and the first contour refers to the circular contour formed by connecting all the farthest points. The first contour has a diameter larger than that of the gas distribution large ring, that is, the gas is introduced into the gas outlet pipe with a larger coverage area from the gas distribution large ring, so as to expand the gas outlet area. This is the reason why the gas distribution large ring and the gas outlet pipe are arranged in two layers, that is, the gas distribution large ring and the gas outlet pipe are arranged in two layers to expand the overall coverage area of the gas distributor. The “innermost edge” refers to the point of each gas outlet pipe closest to the center of the gas distribution large ring, and the second contour is obtained by connecting the points at the innermost edge. The diameter of the second contour is adjusted according to the required space, for example, considering that a stirring component is usually arranged in the bioreactor tank for oxygen supply, the size of the second contour is larger than the diameter of the stirring shaft to facilitate installation and use. The size of the second contour can also be adjusted according to other specific structures.

[0063] In an example, the gas distribution large ring is circular, oval, square, polygonal, flower-shaped, etc., and is preferably circular. The shape of the gas distribution large ring is not strictly limited, as long as it is a closed pipe suitable for aeration. The most common choice is a circular shape, which is easy to manufacture and can maximize the pipe area. The shape of the gas distribution large ring can also be set to other regular or irregular shapes according to actual conditions.

[0064] In an example, when the gas outlet pipe is annular, its shape is selected from one or more of a water droplet shape, a triangle, a petal shape, an isosceles trapezoid, and an oval; and when the gas outlet pipe is linear, its shape is selected from a straight line, an arc, and a broken line. As described above, the shape of the gas outlet pipe is not strictly limited, as long as it can further expand the coverage area of the gas distributor outlet. Considering the manufacturing difficulty and actual effect, the water droplet shape or the straight line shape is preferred.

[0065] In an example, the gas outlet pipe is annular, and the gas outlet pipe and the gas distribution large ring are communicated at two symmetrical positions.

[0066] In an example, one or more branch pipes are further provided on the gas outlet pipe, which are in communication with the gas outlet pipe and / or the gas distribution ring, and at least one gas outlet hole is provided on the surface of the branch pipe which is parallel to the cross section of the gas distribution ring, or the branch pipe is connected with the connecting pipe to increase the number of gas outlet components such as gas refiner. The branch pipe is mainly used to increase the pipe coverage area, which is in communication with the gas outlet pipe and / or the gas distribution ring, and the gas flows into the branch pipe from the gas outlet pipe or the gas distribution ring, and is released into the bioreactor through the gas outlet components on the branch pipe. For example, when the gas outlet pipe is a straight pipe, the branch pipe can be provided as a pipe extending to both sides from the gas outlet pipe, at this time, the gas outlet pipe and the branch pipe form a vein-like structure similar to a leaf blade, which increases the gas outlet area; for another example, when the gas outlet pipe is a ring, the branch pipe can be provided as a structure spanning the ring, or a part of the branch pipe spans the ring, and the other part is connected between the spanning branch pipe and the ring; and the like, as long as the setting can achieve the increase of the gas outlet area. In addition, the branch pipe also has the effect of further strengthening the fixation and support of the gas outlet pipe, and strengthens the stability of the overall structure.

[0067] In an example, the gas distribution ring is composed of several detachable pipe parts; and / or,

[0068] The gas outlet pipe is composed of several detachable pipe parts; and / or,

[0069] The gas outlet pipe is detachably installed on the gas distribution ring.

[0070] Generally, the gas distributor is installed into the bioreactor after the main structure of the bioreactor is assembled, and is usually put into the bioreactor through the opening such as the feed port or the sampling port of the bioreactor, therefore, in order to adapt to different sizes of the opening of the bioreactor, the gas distribution ring and / or the gas outlet pipe can be provided as detachable and composed of several pipe parts, so that the gas distribution ring and / or the gas outlet pipe can pass through the opening of the bioreactor with the smallest size, or the gas outlet pipe is detachably installed on the gas distribution ring, so as to facilitate the installation and disassembly.

[0071] In an example, the gas outlet pipe and the gas distribution ring are connected by nuts and bolts, or are connected by the second connecting pipe with threads. There is no strict limitation on the connection mode of the gas outlet pipe and the gas distribution ring, as long as the connection can be sealed and disassembled conveniently, and the conventional connection mode such as the combination of nuts and bolts can achieve the above functions.

[0072] In an example, a removable plug is arranged at at least part of the air outlet holes of the air outlet pipe; preferably, the gas refining structure and the plug are arranged alternately; the plug is a plug with waterproof function, preferably a stainless steel plug, a plastic plug or a silica gel plug. The plug is used to plug part of the air outlet holes according to the requirement of air outlet, so as to adjust the air outlet amount. The number of the gas refining structure and the plug can be adjusted according to the requirement of aeration, for example, when the fermentation also requires a high dissolved oxygen amount, all the air outlet holes can be provided with the gas refining structure, and when the dissolved oxygen amount requirement is low, the number of the gas refining structure can be reduced. When the gas refining structure does not need to cover all the air outlet holes, the air outlet holes without the gas refining structure can be closed by the plug or directly outlet air through the air outlet holes. Therefore, the gas refining structure and the plug can be connected to the air outlet holes in a removable manner, so as to realize the above adjustment. The main function of the plug is to plug the air outlet holes without air outlet, and directly contact with the reaction liquid, therefore, it needs certain pressure resistance and waterproof ability, preferably a stainless steel plug.

[0073] In an example, a support rod can also be added according to the requirement to support and fix the gas distributor at a fixed position of the bioreactor. The support rod is a solid or hollow structure, but does not communicate with the inside of the gas distributor, and does not play a role in distributing air, and is only used for fixing and supporting, therefore, the length of the support rod is adjusted according to the installation requirement. Specifically, the support rod can be located on the gas distribution ring or the air outlet pipe, preferably on the gas distribution ring.

[0074] In an example, a gas distribution system is also provided, which comprises the gas distributor of the first aspect and an air pump. The combination of the gas distributor and the pump and other components for air delivery forms a gas distribution system, which can be used for air delivery in different bioreactors.

[0075] In an example, a bioreactor is also provided, which comprises the gas distributor or the gas distribution system and a bioreactor tank body; the gas distributor is installed inside the tank body. Due to the installation of the gas distribution system, the aeration amount and the dissolved oxygen amount of the bioreactor can be flexibly adjusted, which is beneficial for the biological metabolism reaction of the bacteria and improves the bioreaction efficiency.

[0076] Embodiment 1

[0077] Please refer to the drawings in the specification Figure 1 and Figure 2 The embodiment provides a gas distributor, and the specific structure of the device comprises: (1) an air inlet pipe, (2) a gas distribution ring, (3) an air outlet pipe, (4) a gas refiner, (5) a connecting pipe, (6) a branch pipe, and (7) a fixing rod.

[0078] The gas inlet pipe is connected with an external gas supply device at one end and is communicated with one end of the gas distribution ring at the other end, for conveying gas into the gas distribution ring;

[0079] The gas distribution ring is a hollow circular pipe, and the inside of the gas distribution ring is communicated with the gas outlet pipe; the gas outlet pipe is connected with the gas refiner at the end through a connecting pipe; the connecting pipe is curved, guiding the downward exhaust of the gas refiner;

[0080] The gas outlet pipe is in the shape of a water drop, and there are several gas outlet pipes stacked below the gas distribution ring; one branch pipe is arranged on each gas outlet pipe, the branch pipe is horizontally arranged on both sides of the gas outlet pipe, and the two ends and the middle of the branch pipe are respectively connected with and communicated with the openings of the gas distribution ring, that is, the gas outlet pipe is communicated with the gas distribution ring at two openings through the horizontally arranged branch pipe, and the surfaces of the gas outlet pipe and the branch pipe are provided with a plurality of connecting pipes;

[0081] The outermost edges of all the water drop-shaped gas outlet pipes form a first contour, the diameter of the first contour is greater than the diameter of the gas distribution ring, and the first contour is close to the outer wall of the bioreactor; the innermost edges of all the water drop-shaped gas outlet pipes form a second contour, and the diameter of the second contour is greater than the diameter of the stirring shaft of the bioreactor, so that the gas distribution ring is conveniently installed;

[0082] Support rods are arranged outside the gas distribution ring, the length of the support rods is adapted to the inner diameter of the part of the bioreactor where the gas distributor is arranged, and the support rods can assist in fixing the gas distributor during installation, so that the stability of the gas distributor in the bioreactor is ensured.

[0083] From Figure 2 It can be seen that the gas distribution ring is at the uppermost layer, the gas outlet pipe is below the gas distribution ring, and the gas refiner is below the gas outlet pipe; overall, the gas distribution ring, the gas outlet pipe and the gas refiner are stacked in three layers from top to bottom.

[0084] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Therefore, the embodiments should be considered as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and all changes falling within the meaning and range of equivalents of the elements of the claims are intended to be embraced therein. Any reference signs in the claims should not be considered as limiting the claims to which they relate.

[0085] Furthermore, it should be understood that although the specification is described in terms of embodiments, not every embodiment includes every feature or implementation described herein. The specification can include implicit combinations of explicitly mentioned features and / or implicit combinations of implicitly mentioned features. Such combinations are also expressly included within the scope of the specification and an embodiment.

Claims

1. A gas distributor, characterized by, The gas distributor comprises: a gas inlet pipe, a gas distribution big ring, and a gas outlet pipe; One end of the gas inlet pipe is connected with an external gas supply device, and the other end is connected with one end of the gas distribution big ring, for conveying external gas into the gas distribution big ring; The gas distribution big ring is a hollow ring-shaped pipe; The gas outlet pipe has a plurality of gas outlet pipes, each of which is connected with at least one of the gas distribution big rings; The gas distribution big ring and the gas outlet pipe are in a stacked relationship; the length direction of the gas outlet pipe is the radial direction of the gas distribution big ring.

2. The gas distributor of claim 1, wherein: The surface of the gas outlet pipe parallel to the cross section of the gas distribution big ring is provided with a plurality of gas outlet holes, and at least part of the gas outlet holes is provided with a gas refining structure; or the gas outlet pipe is provided with a plurality of connecting pipes connected with the gas refiner.

3. The gas distributor according to claim 2, wherein: The connecting pipe is a straight pipe or an elbow pipe, and the gas outlet direction of the gas refiner can be adjusted through the connecting pipe.

4. The gas distributor according to claim 2 or 3, wherein: The surface of the gas refiner comprises a porous structure, and the porous structure is in the shape of a sheet and is made of one or more of stainless steel, ceramic, resin, and plastic.

5. The gas distributor of claim 4, wherein: The material of the porous structure is stainless steel or ceramic.

6. The gas distributor according to claim 2, wherein: The plurality of gas outlet pipes are uniformly spaced apart; The shape of the gas outlet pipe is linear or annular; When the gas outlet pipe is linear, it is arranged in a radial manner relative to the central region of the gas distributor; When the gas outlet pipe is annular, the width of the surface on which the gas outlet holes are arranged gradually increases in the length direction.

7. The gas distributor according to claim 1, wherein: The outermost edge of all the gas outlet pipes away from the central region of the gas distributor in the length direction is in the shape of a first contour.

8. The gas distributor of claim 7, wherein: The diameter of the first contour is greater than the diameter of the gas distribution big ring.

9. The gas distributor of claim 1, wherein, The cross-sectional shape of the gas distribution big ring is circular, elliptical, square, polygonal, or flower-shaped; The gas outlet pipe is in the shape of a closed loop; Alternatively, the gas outlet pipe is linear, and the shape of the cross section parallel to the cross section of the gas distribution big ring is selected from a straight line, an arc line, and a broken line.

10. The gas distributor of claim 1, wherein, The cross-sectional shape of the gas distribution big ring is circular, and the shape of the cross section parallel to the cross section of the gas distribution big ring is selected from a water drop shape, a triangle, a petal shape, an isosceles trapezoid, and an ellipse.

11. The gas distributor according to claim 1, wherein: The gas distribution big ring is composed of several detachable pipes; and / or, The gas outlet pipe is composed of several detachable pipes; and / or, The gas outlet pipe is detachably installed on the gas distribution big ring.

12. The gas distributor of claim 2, wherein, At least part of the gas outlet holes is provided with a detachable plug; the plug is a plug with a waterproof function.

13. The gas distributor of claim 12, wherein, The gas refining structure and the plug are arranged alternately.

14. The gas distributor of claim 12, wherein, The plug is a stainless steel plug, a plastic plug, or a silicone plug.

15. A gas distribution system characterized by, The gas distribution system comprises the gas distributor according to any one of claims 1-14, and a gas pump.

16. A bioreactor apparatus, comprising: The bioreactor apparatus comprises the gas distributor according to any one of claims 1-14 or the gas distribution system according to claim 15, and a bioreactor tank body, the gas distributor being installed inside the tank body.

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