Gas distribution device of biological fermentation tank

Abstract

The utility model relates to a gas distribution device of a biological fermentation tank, which is arranged on a bottom plate of the biological fermentation tank and comprises a gas distribution pipe, a gas supply nozzle, a protection tank and a cover plate, the protection grooves are in one-to-one correspondence with the gas distribution pipes and are formed in the upper surface of the bottom plate in the length direction of the gas distribution pipes; the air supply nozzle is arranged in the protection groove and is communicated with the air distribution pipe below; the air supply nozzle comprises an inner cylinder and an outer cylinder which are in sealed sliding connection, the bottom of the outer cylinder is connected with the air distribution pipe, a plurality of air supply holes are formed in the cylinder wall of the inner cylinder, and the air supply holes have height difference in the vertical direction; the inner cylinder can slide up and down in the outer cylinder along with the change of air supply pressure; the cover plate is provided with a vent hole, and the cover plate covers the notch of the protection groove. According to the utility model, through the design of the air supply nozzle, the problem that the air supply hole is blocked due to fermented material chippings is solved, so that smooth air supply of the bottom plate is guaranteed; and meanwhile, through the design of the gas distribution pipe and the protection groove, the use durability of the gas distribution system in the humid and hot corrosion environment is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of biological fermentation ventilation engineering, in particular to a gas distribution device for a biological fermentation tank. Background Art

[0002] Aerobic biological fermentation requires timely supplementation of sufficient air from the outside. At present, the gas distribution systems for fermentation tanks in engineering mainly include a point gas distribution system and a surface gas distribution system. The point gas distribution system forms regularly arranged ventilation holes by burying ventilation pipes and opening holes along the axial or radial direction of the pipes; while the surface gas distribution system realizes ventilation through a breathable plate with an internal ventilation cavity. However, in the existing gas distribution devices, the gas distribution pipes and the gas distribution micropores are usually completely exposed in the fermented substances. Fermented residue is likely to enter the gas distribution pipes and block the gas distribution micropores, resulting in poor gas distribution and affecting production; at the same time, the fermentation environment will also corrode the gas distribution pipes, reducing the service life.

[0003] Therefore, how to provide a gas distribution device for a biological fermentation tank that can avoid the blockage of air supply holes by fermented debris is a technical problem that needs to be solved urgently by those skilled in the art. Summary of the Utility Model

[0004] The utility model provides a gas distribution device for a biological fermentation tank to solve the above technical problems.

[0005] To solve the above technical problems, the utility model provides a gas distribution device for a biological fermentation tank, which is arranged on the bottom plate of the biological fermentation tank and includes a gas distribution pipe, an air supply nozzle, a protection groove and a cover plate.

[0006] The gas distribution pipe is buried in the bottom plate.

[0007] The protection grooves correspond to the gas distribution pipes one by one, and the protection grooves are opened on the upper surface of the bottom plate along the length direction of the gas distribution pipes.

[0008] The air supply nozzle is arranged in the protection groove and is communicated with the gas distribution pipe below it; the air supply nozzle includes an inner cylinder and an outer cylinder that are hermetically and slidably connected. The bottom of the outer cylinder is connected to the gas distribution pipe. A plurality of air supply holes are provided on the wall of the inner cylinder, and there is a height difference in the vertical direction between the air supply holes; the inner cylinder can slide up and down in the outer cylinder with the change of the air supply pressure.

[0009] The cover plate is provided with ventilation holes, and the cover plate covers the notch of the protection groove.

[0010] Preferably, the gas distribution pipes are buried side by side at equal intervals in the bottom plate, and the air supply nozzles are evenly distributed along the axial direction on the gas distribution pipes.

[0011] Preferably, each gas distribution pipe is independently connected to the main air supply pipe and connected to the air supply equipment.

[0012] Preferably, the air supply holes are arranged in layers in the vertical direction of the cylinder wall, and the air supply holes on each layer are evenly distributed along the circumferential direction of the cylinder wall.

[0013] Preferably, a cylinder cap is provided at the top of the inner cylinder, and the cylinder cap is detachably connected to the cylinder wall.

[0014] Preferably, a first limiting groove is provided at the bottom of the inner cylinder, and a second limiting groove is provided at the top of the outer cylinder. The outer diameter of the first limiting groove is larger than the inner diameter of the second limiting groove.

[0015] Preferably, a connecting shaft is provided at the bottom of the outer cylinder, and the connecting shaft is connected to the air distribution pipe through steel clips buried in the bottom plate.

[0016] Preferably, the cross-section of the protection groove is an inverted trapezoid.

[0017] Compared with the prior art, the air distribution device of the biological fermentation tank provided by the present utility model has the following advantages:

[0018] 1. Through the design of the air supply nozzle, the present utility model solves the problem that the air supply holes are blocked by fermentation debris, thereby ensuring smooth air supply to the bottom plate;

[0019] 2. Through the design of the air distribution pipe and the protection groove, the present utility model improves the service durability of the air distribution system in a humid and hot corrosion environment;

[0020] 3. Through the design of the air supply nozzle and the protection groove, the present utility model improves the air supply efficiency, realizes automatic collection of condensed water for reuse in production, and improves the energy conservation and environmental protection benefits of the biological fermentation tank;

[0021] 4. Each component in the present utility model can be modularly installed, which is convenient for maintenance and improves efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic diagram of the overall structure of a biological fermentation tank in a specific embodiment of the present utility model;

[0023] Figure 2 is a cross-sectional view of the air distribution device of the biological fermentation tank in a specific embodiment of the present utility model;

[0024] Figure 3 is a distribution diagram of the air distribution pipe and the air supply nozzle in a specific embodiment of the present utility model;

[0025] Figure 4 is a schematic diagram of the structure of the air supply nozzle in a specific embodiment of the present utility model;

[0026] Figure 5 is a schematic diagram of the structure of the inner cylinder in a specific embodiment of the present utility model;

[0027] Figure 6 This is a schematic structural view of the outer cylinder in a specific embodiment of the present utility model;

[0028] Figure 7 This is a schematic structural view of the steel clamping piece in a specific embodiment of the present utility model.

[0029] In the figure: 001 - bottom plate, 002 - retaining wall; 100 - air distribution pipe, 200 - air supply nozzle, 210 - inner cylinder, 211 - air supply hole, 212 - cylinder cap, 213 - first limiting groove, 220 - outer cylinder, 221 - second limiting groove, 222 - connecting shaft, 223 - steel clamping piece, 300 - protection groove, 400 - cover plate. Specific Embodiment

[0030] In order to more elaborately describe the technical solutions of the above-mentioned utility model, specific embodiments are listed below to prove the technical effects; it should be emphasized that these embodiments are used to illustrate the present utility model and not to limit the scope of the present utility model.

[0031] The air distribution device for the biological fermentation tank provided by the present utility model is described with one fermentation tank unit as a unit. As Figure 1 shown, one fermentation tank unit is formed by splicing the bottom plate 001 at the bottom and the retaining wall 002 on the side. The air distribution device is arranged on the bottom plate 001 of the biological fermentation tank and includes an air distribution pipe 100, an air supply nozzle 200, a protection groove 300 and a cover plate 400. The above components are the basis for the air supply and distribution work of the fermentation tank. The air distribution of each fermentation tank unit is independently arranged and operates in parallel. The abnormal operation of the air distribution device of a certain unit does not affect the operation of other units. Specifically:

[0032] Please refer with emphasis to Figure 1 and Figure 2 , the air distribution pipe 100 is buried in the bottom plate 001. In this application, the air distribution pipe 100 is buried in the bottom plate 001 in a concealed wiring manner, fundamentally solving the durability problem of the air distribution pipeline.

[0033] Please continue to refer to Figure 2 , the protection groove 300 corresponds to the air distribution pipe 100 one by one, and the protection groove 300 is opened on the upper surface of the bottom plate 001 along the length direction of the air distribution pipe 100.

[0034] Please continue to refer to Figure 2 and Figure 3 , the air supply nozzle 200 is arranged in the protection groove 300 and is communicated with the air distribution pipe 100 below it. By designing and controlling the opening size and depth of the protection groove 300, it is possible to avoid the direct action of heavy loads such as construction machinery on the air supply nozzle 200, avoid external force damage, and realize the arrangement and protection of the air supply nozzle 200; please refer with emphasis toFigure 4 The air supply nozzle 200 includes an inner cylinder 210 and an outer cylinder 220 that are hermetically and slidably connected. The bottom of the outer cylinder 220 is connected to the air distribution pipe 100. A plurality of air supply holes 211 are provided on the wall of the inner cylinder 210, and there is a height difference in the vertical direction between the air supply holes 211. The inner cylinder 210 can slide up and down in the outer cylinder 220 under the action of the change in air supply pressure and gravity to adjust the air supply volume and ensure a stable air pressure output. The telescopic air supply nozzle 200 structure designed in this application, on the one hand, fundamentally blocks the path for the fermented matter to block the air holes, improving the service durability of the air supply nozzle 200 itself; on the other hand, in the prior art, the air supply nozzle is directly connected to the air supply pipe, and the pressure at the terminal air supply is directly affected by the pressure of the main air distribution pipe. When the pressure is insufficient, the injection pressure and radius of the air supply nozzle cannot meet the production requirements, affecting the fermentation quality. However, this application can ensure a stable pressure at the air supply end and ensure the air supply radius.

[0035] Please continue to refer to Figure 2 The cover plate 400 is provided with ventilation holes (not shown). The cover plate 400 covers the notch of the protection groove 300. By using the hollow structure of the cover plate 400, it can allow gas to pass through, without affecting the free sliding of the inner cylinder 210 of the air supply nozzle 200, and can prevent the fermented matter from entering the protection groove 300, blocking the direct contact between the fermented matter and the air supply nozzle 200, reducing the influence of corrosive media, and improving the working durability of the air distribution device; it can also bear the load of the ground and the fermented matter, avoiding the direct action of the load on the air supply nozzle 200. In some embodiments, the cover plate 400 can be made of corrosion-resistant metal material, so that the cover plate 400 has strong bearing capacity and stiffness. In some embodiments, the cover plate 400 can be installed in a movable manner, which is convenient for the maintenance and cleaning of the protection groove 300.

[0036] Through the design of the air supply nozzle 200 of the present utility model, the problem that the air supply holes 211 are blocked by fermented matter debris is solved, thereby ensuring smooth air supply to the bottom plate 001; through the design of the air distribution pipe 100 and the protection groove 300, the service durability of the air distribution system in a humid and hot corrosion environment is improved.

[0037] In some embodiments, please pay key attention to Figure 1 and Figure 3 The air distribution pipes 100 are buried side by side at equal intervals in the bottom plate 001, and the air supply nozzles 200 are evenly distributed along the axial direction on the air distribution pipes 100. Specifically, the pipe diameter of the air distribution pipes 100 and the hole pitch of the air supply nozzles 200 are determined to meet the production process.

[0038] In some embodiments, each air distribution pipe 100 is independently connected to the main air supply pipe and connected to the air supply equipment, so that each air distribution pipe 100 works independently and does not affect each other.

[0039] In some embodiments, please refer with emphasis to Figure 4 and Figure 5 , the air supply holes 211 are arranged in layers in the vertical direction of the cylinder wall, and the air supply holes 211 on each layer are evenly distributed along the circumferential direction of the cylinder wall to meet the air supply requirements under different air pressure conditions. When there is no air supply, the inner cylinder 210 completely descends into the outer cylinder 220, blocking direct contact between the fermentation environment and the inner cylinder 210, thereby preventing the fermentation material from clogging the air supply holes 211, reducing the corrosion of the core components of the air supply nozzle 200 by the fermentation environment, and improving the service durability of the air distribution system.

[0040] In some embodiments, please refer with emphasis to Figure 5 , a cylinder cap 212 is provided at the top of the inner cylinder 210, and the cylinder cap 212 is detachably connected to the cylinder wall, facilitating the maintenance of the air supply nozzle 220 in specific situations.

[0041] In some embodiments, please continue to refer to Figure 5 and Figure 6 , a first limiting groove 213 is provided at the bottom of the inner cylinder 210, and a second limiting groove 221 is provided at the top of the outer cylinder 220. The outer diameter of the first limiting groove 213 is greater than the inner diameter of the second limiting groove 221 to prevent the inner cylinder 210 from separating from the outer cylinder 220 when the air pressure is too high.

[0042] In some embodiments, please refer with emphasis to Figure 6 and Figure 7 , a connecting shaft 222 is provided at the bottom of the outer cylinder 220, and the connecting shaft 222 is connected to the air distribution pipe 100 through steel clips 223 buried in the bottom plate 001. The steel clips 223 can be made of corrosion-resistant materials (such as stainless steel), buried in the bottom plate 001 of the fermentation tank, and fixed to the air supply nozzle 200 by nesting on the connecting shaft 222.

[0043] In some embodiments, please refer with emphasis to Figure 2 , the cross-section of the protection groove 300 is trapezoidal in reverse, and the cross-sectional dimensions match the production process. Since the production conditions of the fermentation tank are a humid and hot environment, it is necessary to adjust the temperature and humidity at different production stages. The air supply includes steam, cold air, natural wind, etc. A large amount of condensed water is generated at the air supply port by the hot and cold gases. Most of the existing fermentation tanks have unorganized drainage, which is not conducive to the management of the sanitary environment in the production area. However, in this application, by using the slope design of the protection groove 300, the confluence and collection of the condensed water are realized, which can be used as the nutrient solution raw material for the subsequent production process, achieving the benefits of environmental protection and resource recycling.

[0044] The implementation steps of the air distribution device for the biological fermentation tank provided by the present utility model are as follows:

[0045] First, embed the air distribution pipe 100 in the bottom plate 001 of the fermentation tank. According to the process requirements, holes need to be pre-drilled in the air distribution pipe 100, and connectors (not shown) for connecting the air supply nozzles 200 are set;

[0046] Then, determine the cross-section of the protection tank 300 according to the size of the air supply nozzle 200. Use a sizing die, fix it above the air distribution pipe 100, and then pour the bottom plate 001 with concrete; after the concrete reaches the designed strength, remove the sizing die to obtain the protection tank 300; confirm the hole positions on the air distribution pipe 100, and then install the air supply nozzles 200;

[0047] Finally, connect the air distribution pipe 100 to the air supply main pipeline outside the fermentation tank, conduct an airtightness test on the pipeline. After completing the commissioning work, the cover plate 400 can be installed, and the air distribution system can operate normally.

[0048] Each component in the utility model can be modularly installed, which is convenient for maintenance and improves efficiency.

[0049] In summary, the air distribution device for the biological fermentation tank provided by the utility model is arranged on the bottom plate 001 of the biological fermentation tank, and includes an air distribution pipe 100, an air supply nozzle 200, a protection tank 300, and a cover plate 400. The air distribution pipe 100 is embedded in the bottom plate 001; the protection tank 300 corresponds to the air distribution pipe 100 one by one, and the protection tank 300 is opened on the upper surface of the bottom plate 001 along the length direction of the air distribution pipe 100; the air supply nozzle 200 is arranged in the protection tank 300 and is communicated with the air distribution pipe 100 below it; the air supply nozzle 200 includes an inner cylinder 210 and an outer cylinder 220 that are hermetically and slidably connected. The bottom of the outer cylinder 220 is connected to the air distribution pipe 100, and a plurality of air supply holes 211 are provided on the cylinder wall of the inner cylinder 210, and there is a height difference in the vertical direction of the air supply holes 211; the inner cylinder 210 can slide up and down in the outer cylinder 220 with the change of the air supply pressure; the cover plate 400 is provided with air vents, and the cover plate 400 covers the notch of the protection tank 300. Through the design of the air supply nozzle 200, the utility model solves the problem that the air supply holes 211 are blocked by fermentation debris, thereby ensuring smooth air supply on the bottom plate 001; through the design of the air distribution pipe 100 and the protection tank 300, the service durability of the air distribution system in a humid and hot corrosion environment is improved.

[0050] Obviously, those skilled in the art can make various changes and modifications to the utility model without departing from the spirit and scope of the utility model. Thus, if these modifications and variations of the utility model fall within the scope of the claims of the utility model and their equivalent technologies, the utility model also intends to include these changes and modifications.

Claims

1. A gas distribution device for a biological fermentation tank, characterized in that: It is installed on the bottom plate of the biological fermentation tank, including air distribution pipe, air supply nozzle, protection groove and cover plate. The air distribution pipe is buried in the bottom plate; The protection grooves correspond to the air distribution pipes one by one, and the protection grooves are opened on the upper surface of the bottom plate along the length direction of the air distribution pipes; The air supply nozzle is arranged in the protection groove and is connected to the air distribution pipe below it; the air supply nozzle comprises an inner cylinder and an outer cylinder which are sealed and slidably connected, the bottom of the outer cylinder is connected to the air distribution pipe, a plurality of air supply holes are arranged on the cylinder wall of the inner cylinder, and the air supply holes have a height difference in the vertical direction; the inner cylinder can slide up and down in the outer cylinder as the air supply pressure changes; The cover plate is provided with a vent hole, and the cover plate covers the notch of the protection groove.

2. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: The air distribution pipes are buried in the bottom plate in parallel and at equal intervals, and the air supply nozzles are evenly distributed on the air distribution pipes along the axial direction.

3. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: Each of the air distribution pipes is independently connected to the air supply main pipe and connected to the air supply equipment.

4. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: The air supply holes are arranged in layers in the vertical direction of the cylinder wall, and the air supply holes on each layer are evenly distributed along the circumferential direction of the cylinder wall.

5. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: A tube cap is provided on the top of the inner tube, and the tube cap is detachably connected to the tube wall.

6. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: A first limiting groove is provided at the bottom of the inner cylinder, and a second limiting groove is provided at the top of the outer cylinder. The outer diameter of the first limiting groove is greater than the inner diameter of the second limiting groove.

7. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: A connecting shaft is provided at the bottom of the outer cylinder, and the connecting shaft is connected to the air distribution pipe through a steel clip buried in the bottom plate.

8. The bio-fermentation tank gas distribution device according to claim 1, characterized in that: The cross section of the protection groove is an inverted trapezoid.

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