Ventilation device for raw material fermentation chamber

Abstract

The utility model discloses a raw material fermentation chamber ventilation device relates to fermentation technical field, technical scheme is, including fermentation chamber, the hole type ventilation floor is set up in the fermentation chamber, and the hole type ventilation floor is set up ventilation interlayer between fermentation chamber floor, is provided with the impeller and sealed air valve on the wall body in the fermentation chamber, and the impeller is communicated ventilation interlayer through the ventilation pipe, is provided with a plurality of ventilation columns in the fermentation chamber, and the ventilation column is fixedly set up on the fermentation chamber bottom plate, the utility model has the beneficial effect that: the hole type ventilation floor forms ventilation interlayer with the fermentation chamber floor, and the airflow is uniformly penetrated upwards through the through -hole, and the raw material heap bottom area is covered accurately, and the moisture and harmful gas accumulated at the bottom are effectively discharged, and the mould is avoided to breed, and the telescopic ventilation column can adjust the elongation amount flexibly, and the top can extend to the raw material heap middle part or upper part, and cooperate the ventilation hole of intermediate cylinder and inner column surface, realize the directional air supply of middle layer, deep layer, and ensure that the same batch raw material fermentation environment is consistent.

Description

Technical Field

[0001] This utility model relates to the field of fermentation technology, and in particular to a ventilation device for a raw material fermentation chamber. Background Technology

[0002] In the fermentation production of feed, biomass, and other raw materials, the ventilation effect of the fermentation chamber directly determines the fermentation efficiency, product quality, and production safety. During raw material fermentation, microbial metabolism continuously produces bioheat, moisture, and harmful gases such as ammonia and hydrogen sulfide. At the same time, the aerobic fermentation stage requires continuous oxygen replenishment to maintain the activity of beneficial microorganisms. If ventilation is not timely or uniform, it can easily lead to a series of production problems.

[0003] Currently, most ventilation devices for raw material fermentation chambers on the market adopt a single ventilation mode, with a common structure consisting of a wall-mounted fan combined with top or side vents for air delivery. These devices have significant drawbacks: the ventilation path is singular, and airflow is concentrated in the surface area of ​​the fermentation chamber, easily creating ventilation dead zones at the bottom and deeper layers of the raw material pile. This prevents moisture from escaping, leading to mold growth, while the deeper layers of raw materials undergo anaerobic fermentation due to lack of oxygen, producing harmful gases, ultimately causing mold growth and fermentation failure. Utility Model Content

[0004] To address the aforementioned technical problems, this utility model provides a ventilation device for a raw material fermentation chamber.

[0005] The technical solution includes a fermentation chamber, in which a perforated ventilation floor is installed, and a ventilation interlayer is provided between the perforated ventilation floor and the fermentation chamber floor. An impeller and a sealing air valve are installed on the wall of the fermentation chamber, and the impeller is connected to the ventilation jacket through a ventilation pipe; Several ventilation columns are installed in the fermentation chamber, and the ventilation columns are fixedly installed on the bottom plate of the fermentation chamber; The ventilation column includes an installation pipe fixedly installed on the floor of the fermentation chamber, an intermediate cylinder is sleeved inside the installation pipe, and an inner column is sleeved inside the intermediate cylinder. The inner column and the intermediate cylinder, as well as the intermediate cylinder and the installation pipe, are all slidable. A lead screw is rotatably installed inside the mounting tube. The lead screw is rotatably connected to the lower end of the intermediate cylinder. A tubular upright is fixedly installed at the middle of the lower end of the intermediate cylinder. A roller is rotatably installed on the top of the upright. A chain is also installed inside the ventilation column. One end of the chain is fixedly connected to the lower end of the mounting tube, and the other end of the chain passes around the roller and is fixed to the lower end of the inner column.

[0006] Preferably, a drive motor is fixedly installed at the lower end of the mounting tube, and the motor shaft of the drive motor is coaxially fixed with the lead screw.

[0007] Preferably, both the intermediate cylinder and the inner column have several ventilation holes on their surfaces; A high-pressure blower is also installed on the wall of the fermentation chamber, and the outlet of the high-pressure blower is connected to a ventilation column through several pipes.

[0008] Preferably, the sealing air valve includes a frame fixedly mounted on the wall of the fermentation chamber, a plurality of blades are rotatably mounted on the frame, the plurality of blades are arranged side by side, and each blade has a rotating shaft at the middle of both ends, and the blade is rotatably connected to the frame through the rotating shaft; Each of the rotating shafts on the same side is fixedly equipped with a swing arm, and the multiple swing arms are connected by a linkage.

[0009] Preferably, an electric actuator is also provided on the frame, with the fixed part of the electric actuator rotatably connected to the frame and the telescopic part rotatably connected to one end of the connecting rod.

[0010] The beneficial effects of the technical solution provided by this utility model embodiment are as follows: the perforated ventilation floor and the fermentation chamber floor form a ventilation sandwich layer, and the airflow permeates upward evenly through the through holes, accurately covering the bottom area of ​​the raw material pile, effectively expelling the moisture and harmful gases accumulated at the bottom, and preventing the growth of mold; the extendable ventilation column can flexibly adjust the extension amount, and its top can extend to the middle or upper part of the raw material pile. In conjunction with the ventilation holes on the surface of the intermediate cylinder and the inner column, it can realize the directional air supply in the middle and deep layers, ensuring that the fermentation environment of the same batch of raw materials is consistent. Attached Figure Description

[0011] Figure 1 This is a schematic diagram of the overall structure of an embodiment of the present utility model.

[0012] Figure 2 This is a schematic diagram of the impeller and sealing valve according to an embodiment of the present utility model.

[0013] Figure 3 for Figure 2 Enlarged schematic diagram of part A.

[0014] Figure 4 This is a cross-sectional view of the ventilation column according to an embodiment of the present invention.

[0015] The attached diagram is labeled as follows: 1. Fermentation chamber; 2. Perforated ventilation floor; 3. Impeller; 4. Sealing air valve; 5. Ventilation pipe; 6. Ventilation column; 7. Mounting pipe; 8. Intermediate pipe; 9. Inner column; 10. Lead screw; 11. Vertical pole; 12. Roller; 13. Chain; 14. Drive motor; 15. Frame; 16. Blade; 17. Swing arm; 18. Linkage rod; 19. Electric actuator. Detailed Implementation

[0016] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. Of course, the specific embodiments described herein are only for explaining this utility model and are not intended to limit it.

[0017] It should be noted that, without conflict, the embodiments and features in the embodiments of this utility model can be combined with each other.

[0018] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0019] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0020] See Figures 1 to 4 This utility model provides a ventilation device for a raw material fermentation chamber, including a fermentation chamber 1, a perforated ventilation floor 2 installed in the fermentation chamber 1, and a ventilation interlayer installed between the perforated ventilation floor 2 and the floor of the fermentation chamber 1. Outside air is introduced into the ventilation interlayer and then diffuses evenly upwards through the holes in the perforated ventilation floor 2, providing basic ventilation for the raw materials at the bottom of the fermentation chamber 1 and expelling the moisture and harmful gases accumulated at the bottom. An impeller 3 and a sealing air valve 4 are installed on the wall of fermentation chamber 1. The impeller 3 is connected to the ventilation jacket through a ventilation pipe 5. Several ventilation columns 6 are installed inside the fermentation chamber 1, and the ventilation columns 6 are fixedly installed on the bottom plate of the fermentation chamber 1. The ventilation column 6 includes an installation pipe 7 fixedly installed on the floor of the fermentation chamber 1, an intermediate cylinder 8 is sleeved inside the installation pipe 7, an inner column 9 is sleeved inside the intermediate cylinder 8, and the inner column 9, the intermediate cylinder 8, and the installation pipe 7 can all slide. The ventilation column 6 is vertically fixed on the perforated ventilation floor 2. At this time, the inner column 9 and the intermediate cylinder 8 are in a retracted state. The inner column 9 is retracted into the intermediate cylinder 8, and the intermediate cylinder 8 is retracted into the installation pipe 7. The upper surface of the ventilation column 6 is flush with the upper surface of the perforated ventilation floor 2, which does not affect the initial stacking of raw materials. A screw 10 is rotatably installed inside the mounting tube 7. The screw 10 is rotatably connected to the lower end of the intermediate cylinder 8. A tubular upright 11 is fixedly installed at the middle of the lower end of the intermediate cylinder 8. A roller 12 is rotatably installed on the top of the upright 11. A chain 13 is also installed inside the ventilation column 6. One end of the chain 13 is fixedly connected to the lower end of the mounting pipe 7, and the other end of the chain 13 passes around the roller 12 and is fixed to the lower end of the inner column 9.

[0021] As the fermentation raw materials gradually accumulate, the height of the ventilation column 6 needs to be adjusted to deliver air to the middle and upper parts of the raw materials. By rotating the screw 10 inside the installation pipe 7, the screw 10 drives the intermediate cylinder 8 to slide upward along the installation pipe 7. During the upward movement of the intermediate cylinder 8, the roller 12 inside it rises synchronously with the upright 11, causing the chain 13 that passes around the roller 12 to be pulled. Therefore, the inner column 9 slides upward along the intermediate cylinder 8 under the tension of the chain 13, realizing the synchronous elongation of the inner column 9 and the intermediate cylinder 8, and increasing the overall height of the ventilation column 6. Depending on the height of the raw material pile, the extension of the ventilation column 6 can be flexibly adjusted by rotating the screw 10 to ensure that the top of the ventilation column 6 extends to the middle or upper part of the raw material pile.

[0022] A drive motor 14 is fixedly installed at the lower end of the mounting tube 7, and the motor shaft of the drive motor 14 is fixed coaxially with the lead screw 10.

[0023] When the fermentation raw materials gradually accumulate and air needs to be supplied to the middle and upper parts, the height of the ventilation column 6 can be adjusted by controlling the drive motor 14. If it is necessary to reduce the height of the ventilation column 6, the drive motor 14 is reversed, the inner column 9 is retracted into the middle cylinder 8, and the ventilation column 6 is retracted to the target height.

[0024] Several ventilation holes are provided on the surfaces of the intermediate cylinder 8 and the inner column 9; A high-pressure blower is also installed on the wall of fermentation chamber 1, and the outlet of the high-pressure blower is connected to ventilation column 6 through several pipes.

[0025] When the raw materials are piled up to a certain height, and air needs to be sent to the middle and deep layers of the pile, the height of the ventilation column 6 is adjusted by controlling the drive motor 14. At this time, the ventilation holes on the surface of the intermediate cylinder 8 and the inner column 9 are exposed as the structure unfolds. The high-pressure blower is started, and the high-pressure airflow is sent into the ventilation column 6 through the pipe, and then sprayed directly into the deep area of ​​the middle and upper part of the raw material pile through the ventilation holes, forming a three-dimensional airflow network of "bottom penetration + middle / upper layer injection" with the basic ventilation of the perforated ventilation floor 2.

[0026] The ventilation holes of the intermediate cylinder 8 and inner column 9 can extend into the middle and upper part of the pile as the structure extends. With the directional air delivery of the high-pressure blower, the airflow can penetrate the gaps between the raw materials and reach the deep layers of the pile, effectively expelling the moisture accumulated in the deep layers and the harmful gases produced by anaerobic fermentation, while supplementing oxygen for aerobic microorganisms.

[0027] The sealing air valve 4 includes a frame 15 fixedly installed on the wall of the fermentation chamber 1. Several blades 16 are rotatably installed on the frame 15. The multiple blades 16 are arranged side by side. Each blade 16 has a rotating shaft at both ends and the middle of each blade 16. The blades 16 are rotatably connected to the frame 15 through the rotating shaft. Each of the rotating shafts on the same side is fixedly equipped with a swing arm 17, and the multiple swing arms 17 are connected by a linkage 18.

[0028] The blades 16 of the sealing damper 4 are initially in the fully closed state, cutting off the communication channel between the impeller 3 and the ventilation jacket. At this time, the fermentation chamber 1 is in a sealed state, which is suitable for the pre-fermentation stage in the early stage of raw material accumulation. When the raw material accumulates and enters the middle stage of fermentation, it is necessary to discharge the heat and moisture accumulated at the bottom. By pushing the linkage rod 18, all the swing arms 17 swing synchronously, so that the blades 16 rotate from the fully closed state to the fully open state, the adjacent blades 16 are parallel, and the channel is fully opened. When the impeller 3 on the wall is activated, the outside air is pressurized by the impeller 3 and enters the ventilation interlayer through the fully open air valve 4. Then, it diffuses evenly upward through the through holes of the perforated ventilation floor 2, providing independent basic ventilation for the bottom of the raw material pile. This is specifically designed to solve the problems of bottom moisture accumulation and low-temperature fermentation. The high-pressure blower remains closed and does not participate in the basic ventilation.

[0029] An electric actuator 19 is also provided on the frame 15. The fixed part of the electric actuator 19 is rotatably connected to the frame 15, and the telescopic part is rotatably connected to one end of the connecting rod 18.

[0030] When the telescopic part of the electric actuator 19 retracts, the blades 16 of the sealing air valve 4 are fully open, the adjacent blades 16 are parallel, and the channel is fully open; when the telescopic part of the electric actuator 19 extends, the blades 16 of the sealing air valve 4 are fully closed, cutting off the communication channel between the impeller 3 and the ventilation jacket. At this time, the fermentation chamber 1 is in a sealed state, which is suitable for the pre-fermentation stage in the early stage of raw material accumulation.

[0031] When this utility model is in use, outside air is introduced into the ventilation interlayer and then diffuses evenly upward through the through holes on the perforated ventilation floor 2, providing basic ventilation for the raw materials at the bottom of the fermentation chamber 1 and expelling the moisture and harmful gases accumulated at the bottom. As the fermentation raw materials gradually accumulate, the height of the ventilation column 6 needs to be adjusted to deliver air to the middle and upper parts of the raw materials. By rotating the screw 10 inside the installation pipe 7, the screw 10 drives the intermediate cylinder 8 to slide upward along the installation pipe 7. During the upward movement of the intermediate cylinder 8, the roller 12 inside it rises synchronously with the upright 11, causing the chain 13 that passes around the roller 12 to be pulled. Therefore, the inner column 9 slides upward along the intermediate cylinder 8 under the tension of the chain 13, realizing the synchronous elongation of the inner column 9 and the intermediate cylinder 8, and increasing the overall height of the ventilation column 6. Depending on the height of the raw material pile, the extension of the ventilation column 6 can be flexibly adjusted by rotating the screw 10 to ensure that the top of the ventilation column 6 extends to the middle or upper part of the raw material pile.

[0032] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A ventilation device for a raw material fermentation chamber, comprising a fermentation chamber (1), characterized in that, A perforated ventilation floor (2) is provided inside the fermentation chamber (1), and a ventilation interlayer is provided between the perforated ventilation floor (2) and the floor of the fermentation chamber (1); An impeller (3) and a sealing air valve (4) are installed on the wall of the fermentation chamber (1). The impeller (3) is connected to the ventilation interlayer through a ventilation pipe (5). A number of ventilation columns (6) are provided inside the fermentation chamber (1), and the ventilation columns (6) are fixedly installed on the bottom plate of the fermentation chamber (1); The ventilation column (6) includes an installation pipe (7) fixedly installed on the floor of the fermentation chamber (1), an intermediate cylinder (8) is sleeved inside the installation pipe (7), and an inner column (9) is sleeved inside the intermediate cylinder (8). The inner column (9) and the intermediate cylinder (8), as well as the intermediate cylinder (8) and the installation pipe (7), all slide. A screw rod (10) is rotatably installed inside the mounting tube (7). The screw rod (10) is rotatably connected to the lower end of the intermediate cylinder (8). A tubular upright rod (11) is fixedly installed at the middle of the lower end of the intermediate cylinder (8). A roller (12) is rotatably installed on the top of the upright rod (11). A chain (13) is also provided inside the ventilation column (6). One end of the chain (13) is fixedly connected to the lower end of the mounting tube (7), and the other end of the chain (13) passes around the roller (12) and is fixed to the lower end of the inner column (9).

2. The ventilation device for the raw material fermentation chamber according to claim 1, characterized in that, A drive motor (14) is fixedly installed at the lower end of the mounting tube (7), and the motor shaft of the drive motor (14) is coaxially fixed with the lead screw (10).

3. The ventilation device for the raw material fermentation chamber according to claim 2, characterized in that, The surfaces of the intermediate cylinder (8) and the inner column (9) are provided with several ventilation holes; A high-pressure blower is also installed on the wall of the fermentation chamber (1), and the outlet of the high-pressure blower is connected to the ventilation column (6) through several pipes.

4. The ventilation device for the raw material fermentation chamber according to claim 1, characterized in that, The sealing air valve (4) includes a frame (15) fixedly installed on the wall of the fermentation chamber (1). Several blades (16) are rotatably installed on the frame (15). The multiple blades (16) are arranged side by side. Each blade (16) has a rotating shaft at the middle of both ends. The blades (16) are rotatably connected to the frame (15) through the rotating shaft. Each of the rotating shafts on the same side is fixedly provided with a swing arm (17), and the multiple swing arms (17) are connected by a linkage (18).

5. The ventilation device for the raw material fermentation chamber according to claim 4, characterized in that, An electric actuator (19) is also provided on the frame (15). The fixed part of the electric actuator (19) is rotatably connected to the frame (15), and the telescopic part is rotatably connected to one end of the connecting rod (18).

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