An aeration device

Abstract

The present application relates to an aeration device, which belongs to the field of organic fertilizer fermentation technology. The aeration device includes a fixed mechanism, a movable mechanism and a non-return mechanism; the fixed mechanism is connected to the gas pipe, and the fixed mechanism is provided with a first aeration port and a first air inlet; the movable mechanism is installed on the inner side of the fixed mechanism, and the movable mechanism is closer to the gas pipe than the first air inlet, and the movable mechanism is provided with a second aeration port; the non-return mechanism includes a plugging member, and the plugging member can control the first air inlet to open when the external air pressure of the fixed mechanism is greater than the internal air pressure of the fixed mechanism, and the plugging member controls the first air inlet to close in other cases. The aeration device provided in the embodiment of the present application can reduce the risk of ammonia in the fermentation tank entering the gas pipe and corroding the inner wall of the gas pipe, thereby increasing the service life of the gas pipe.

Description

Technical Field

[0001] The present application relates to the technical field of organic fertilizer fermentation, and in particular to an aeration device. Background Art

[0002] Animal husbandry and agricultural production activities will generate a large amount of livestock and poultry waste and other industrial and agricultural organic waste. In order to treat these organic wastes harmlessly, utilize them as resources, and make them into organic fertilizers, these wastes need to be aerobically fermented, that is, aerobically fermented in a fermentation tank.

[0003] During the fermentation process, the fermentation tank needs to be continuously supplied with oxygen to maintain the normal metabolic activities of the microorganisms in the mailing waste and ensure the stability and efficiency of the fermentation effect. For this purpose, an aeration device is usually installed at the bottom of the fermentation tank, and the air is evenly distributed into the fermentation tank through multiple aeration devices. In actual applications, the aeration port of the aeration device is in an open state when it is in a working state, and the aeration port of the aeration device is in a closed state when it is not working (i.e., in a standby state). There is a component in the aeration device for closing the aeration port, and the closing component separates the aeration device into two chambers. When the aeration device is shut down, it changes from a working device to a standby state, and the aeration port changes from an open state to a closed state. The component used to close the aeration port in the aeration device moves to close the aeration port. The movement of the component causes the air pressure in each chamber inside the aeration device to change. In a short period of time, a negative pressure will be formed inside the chamber whose volume increases to adsorb the component used to close the aeration port, thereby slowing down the speed at which the aeration port is closed. As a result, ammonia in the fermentation tank may enter the gas pipe through the aeration port that is not closed in time. Ammonia will corrode the gas pipe from the relatively fragile inside of the gas pipe, thereby affecting the service life of the gas pipe. Utility Model Content

[0004] The purpose of the present application is to provide an aeration device to address the above-mentioned problem, thereby reducing the risk of ammonia in the fermentation tank entering the gas pipe and corroding the inner wall of the gas pipe, and increasing the service life of the gas pipe.

[0005] The present application provides an aeration device for releasing air in an air pipe into a fermentation tank, the aeration device comprising a fixed mechanism, a movable mechanism and a non-return mechanism; the fixed mechanism is fixedly installed on the air pipe, and the fixed mechanism is connected to the air pipe, and the fixed mechanism is provided with a first aeration port and a first air inlet hole; the movable mechanism can be movably installed on the inner side of the fixed mechanism, in a first direction, the movable mechanism is closer to the air pipe than the first air inlet hole, and the movable mechanism is provided with a second aeration port; the non-return mechanism comprises a blocking member, and the blocking member is configured to control the first air inlet hole when the external air pressure of the fixed mechanism is greater than the internal air pressure of the fixed mechanism open, and the blocking member controls the first air inlet to be closed in other situations; wherein, the movable mechanism is configured to be movable along a first direction relative to the fixed mechanism, and the movable mechanism has a working state and a standby state. In the first direction, when the movable mechanism is in the working state, the first aeration port is at least partially connected with the second aeration port, and from one end of the fixed mechanism close to the gas pipe to the other end of the fixed mechanism, the second aeration port is not lower than the first aeration port. When the movable mechanism is in the standby state, the first aeration port and the second aeration port are staggered with each other, and the end of the second aeration port away from the gas pipe does not exceed the end of the first aeration port close to the gas pipe.

[0006] In the technical solution of the embodiment of the present application, the fixed mechanism is fixedly installed on the gas pipe, the movable mechanism can be movably installed on the inner side of the fixed mechanism, the movable mechanism divides the internal space of the fixed mechanism into a first movable chamber and a second movable chamber, the first movable chamber is closer to the gas pipe than the second movable chamber, in the first direction, the movable mechanism is closer to the gas pipe than the first air inlet, the second movable chamber is connected to the outside through the first air inlet, the movable mechanism is provided with a second aeration port, the second aeration port is connected to the first aeration port to be a vent for the gas in the gas pipe to enter the fermentation tank (that is, the aeration port in the prior art mentioned above); the non-return mechanism includes a blocking member, which is configured to be able to be opened when the external air pressure of the fixed mechanism is greater than the internal air pressure of the fixed mechanism (that is, the external The movable mechanism is configured to be movable along a first direction relative to the fixed mechanism, and the movable mechanism has a working state and a standby state. In the first direction, when the movable mechanism is in the working state, the first aeration port is at least partially connected to the second aeration port, and from one end of the fixed mechanism close to the gas pipe to the other end of the fixed mechanism, the second aeration port is not lower than the first aeration port. When the movable mechanism is in the standby state, the first aeration port and the second aeration port are staggered with each other, and the end of the second aeration port away from the gas pipe does not exceed the end of the first aeration port close to the gas pipe.

[0007] When the aeration device changes from the standby state to the working state, the air supply pipe inputs air into the first active cavity, the internal pressure of the first active cavity increases, the air pressure of the first active cavity is greater than the air pressure of the second active cavity, and the movable mechanism moves away from the air supply pipe in the first direction under the impetus of the air pressure difference, the first active cavity increases, and the second active cavity decreases. The second aeration port is connected with the first aeration port to form a vent, and the gas in the first active cavity can enter the aeration tank through the vent, so that the organic waste at the corresponding position of the vent can be fully aerobically fermented;

[0008] When the movable mechanism is in working state, the force exerted on the movable mechanism by the internal air pressure of the first movable chamber is equal to the sum of the force exerted on the movable mechanism by the internal air pressure of the second movable chamber and gravity, and the air in the second movable chamber will escape to the outside through multiple channels such as the gap between the movable mechanism and the fixed mechanism and the first aeration port;

[0009] When the movable mechanism is changed from the working state to the standby state, the gas pipe stops inputting gas to the first movable chamber, and the gas in the first movable chamber is reduced to the same air pressure as the outside air pressure. At this time, the ammonia in the fermentation tank may enter the input pipe through the connecting port, and the force applied by the air pressure in the second movable chamber to the movable mechanism and the gravity of the movable mechanism work together to push the movable mechanism to move toward the gas pipe along the first direction, the first movable chamber shrinks, the second movable chamber expands, and the air pressure in the second movable chamber decreases. When the air pressure in the second movable chamber is reduced to the same as the outside air pressure, the movable mechanism continues to move in the original direction under the push of its own gravity, and the second movable chamber continues to expand so that the internal air pressure is reduced to form a negative pressure environment. The blocking member controls the first vent to open in time, and the outside air enters the second movable chamber, so that the internal air pressure of the second movable chamber can approach the outside air pressure, reducing the risk of the second movable chamber generating suction on the movable mechanism and slowing down the moving speed of the movable mechanism when it is in a negative pressure environment. The movable mechanism can stably and relatively quickly move toward the gas pipe to close the vent, reducing the risk of ammonia entering the gas pipe and corroding the inner wall of the gas pipe.

[0010] In some embodiments, there are multiple first aeration ports, and multiple first aeration ports are arranged on a fixed mechanism around the first direction as an axis; there are multiple second aeration ports, and multiple second aeration ports are arranged on a movable mechanism around the first direction as an axis, and one second aeration port is connected to one or more first aeration ports.

[0011] In the technical solution of the embodiment of the present application, the number of the first aeration ports and the second aeration ports are both multiple, and the multiple first aeration ports and the multiple second aeration ports are all arranged around the first direction as the axis. On the one hand, the aeration device provided by the present application can discharge air in all directions on a plane perpendicular to the first direction, and the organic waste surrounding the aeration device can receive sufficient oxygen, thereby increasing the coverage area of ​​a single aeration device operation, so that a small number of aeration devices can meet the oxygen demand required for the fermentation of more organic waste, thereby reducing the number of aeration devices required to be arranged in a unit space and reducing the use cost of the aeration device; on the other hand, the aeration device can discharge air in all directions on a plane perpendicular to the first direction. When a part of the first aeration ports or the second aeration ports of the aeration device provided by the present application is blocked by organic waste, the first aeration ports and the second aeration ports of the other part of the aeration device can still continue to operate, so that the fermentation process of the surrounding organic waste can continue;

[0012] A second aeration port is connected to one or more first aeration ports, and the size or number of the connection points between each second aeration port and the first aeration port can be adjusted by rotating the movable mechanism, thereby changing the amount of air released by the aeration device per unit time to meet the fermentation requirements of organic waste of different compositions or quantities.

[0013] In some embodiments, the blocking piece is elastic, located on the inner side of the fixing mechanism, and the two ends of the blocking piece are respectively located on both sides of the first air inlet; the blocking piece has a blocking state and an open state. When the blocking piece is in the blocking state, the blocking piece blocks the first air inlet, and the blocking piece and the fixing mechanism are in contact with the surface opposite to the air pipe along the first direction. When the blocking piece is in the open state, the blocking piece is deformed in a direction away from the first air inlet, so that the first air inlet is opened.

[0014] In the technical solution of the embodiment of the present application, when the external air pressure is less than or equal to the air pressure of the second active chamber, the blocking member is in a blocking state, the fixing mechanism limits the deformation of the blocking member toward the first air inlet, the blocking member abuts against the fixing mechanism, and the blocking member is able to control the closure of the first air inlet, so that the air pressure inside the second active chamber can be greater than the external air pressure when the active mechanism is in the working state. The internal air pressure of the second active chamber can do work on the active mechanism in the process of the active mechanism changing from the working state to the standby state, thereby accelerating the movement rate of the active mechanism; when the active mechanism moves and causes the external air pressure to increase When the air pressure in the second active chamber is high, the sealing member is in an open state, and the sealing member is deformed in a direction away from the first air inlet under the push of the air pressure difference between the second active chamber and the outside, so that the first air inlet is opened, and the outside air can enter the second active chamber through the first air inlet, so that the second active chamber can quickly get out of the negative pressure state, reducing the risk of the adsorption activity mechanism slowing down its movement speed due to the second active chamber being in a negative pressure state, and the vent can be closed quickly, reducing the probability of ammonia in the fermentation tank entering the air pipe through the vent and corroding the inner wall of the air pipe, thereby increasing the service life of the air pipe.

[0015] In some embodiments, the movable mechanism includes a top wall and a side wall, one end of the side wall is connected to the top wall, the side wall extends toward the gas pipe along a first direction, the side wall is adapted to the shape of the inner wall of the fixing mechanism and the side wall is close to the inner wall of the fixing component, and the second aeration port is arranged on the side wall; in the first direction, the size of the first aeration port is L1, the size of the second aeration port is L2, the size between the gas pipe and the first aeration port is H1, and the size between the gas pipe and the second aeration port is H2; when the movable mechanism is in a working state, H1+L1≥H2≥H1 is satisfied; when the movable mechanism is in a standby state, H1≥H2+L2 is satisfied.

[0016] In the technical solution of the embodiment of the present application, the movable mechanism includes a top wall and a side wall, the second aeration port is arranged on the side wall, the side wall is adapted to the shape of the inner wall of the fixing mechanism and the side wall is close to the fixing mechanism, so that the gap between the side wall and the fixing mechanism is small, and the gas escaping from the second movable chamber through the side wall and the fixing mechanism is less, and the second movable chamber can have a larger air pressure inside when the movable mechanism is in a working state. On the one hand, the second movable chamber can provide a larger driving force for the movable mechanism during the process of the movable mechanism changing from a working state to a standby state, thereby improving the moving speed of the movable mechanism. On the other hand, the time for the second movable chamber to become a negative pressure state during the process of the movable mechanism changing from a working state to a standby state is shorter and the number of times is also less, thereby reducing the frequency of the blocking member controlling the first vent hole to switch back and forth between the open state and the closed state, thereby reducing the probability of the blocking member being worn during repeated activities and improving the service life of the blocking member.

[0017] In the first direction, the size of the first aeration port is L1, the size of the second aeration port is L2, the size between the air supply pipe and the first aeration port is H1, and the size between the air supply pipe and the second aeration port is H2; when the movable mechanism is in a working state, H1+L1≥H2≥H1 is satisfied, and the second aeration port of the movable mechanism is at least partially connected to the first aeration port, so that the aeration device provided in the present application can continuously output air to the surrounding organic waste;

[0018] When the movable mechanism is in the standby state, H1≥H2+L2 is satisfied, and the second aeration port and the first aeration port can be staggered, thereby reducing the risk of ammonia in the fermentation tank entering the gas pipe through the vent.

[0019] In some embodiments, the fixing mechanism includes a main body, a cover body and a tube body; the main body has a first opening and a second opening relative to each other, a movable mechanism is arranged on the inner side of the main body, and the main body is provided with a first aeration port; the cover body is used to block the first opening, the cover body is provided with a first air inlet, and the check mechanism is connected to the side of the cover body facing the main body; the tube body is respectively connected to the second opening and the pipeline; wherein, in the first direction, the movable mechanism does not extend beyond the main body.

[0020] In the technical solution of the embodiment of the present application, the main body has a relative first opening, the cover body is used to block the first opening, the cover body is provided with a first air inlet hole, the check mechanism is connected to the side of the cover body facing the main body, the main body and the cover body are designed to be separate bodies, and can be disassembled so that the main body and its inner components can be maintained or replaced in time, thereby improving the service life of the fixing mechanism.

[0021] In some embodiments, the non-return mechanism also includes a mask member, which is covered on the side of the cover body facing away from the main body. The mask member is provided with an air inlet. On a plane perpendicular to the first direction, the first air inlet is located on the inner side of the mask member, and the internal space of the mask member is connected to the internal space of the fixing mechanism through the first air inlet.

[0022] In the technical solution of the embodiment of the present application, the non-return mechanism also includes a mask member, which is covered on the side of the cover body away from the main body. The mask member is provided with an air inlet, and the number of the air inlets can be multiple. On a plane perpendicular to the first direction, the first air inlet is located on the inner side of the mask member, and the internal space of the mask member is connected with the internal space of the fixing mechanism through the first air inlet. When the second active cavity is in a negative pressure state, the blocking member controls the first air inlet to open, and the first air inlet absorbs the outside world. The outside air needs to enter the mask member first, and then enter the second active cavity through the first air inlet. The air inlet blocks the surrounding organic waste, thereby reducing the risk of organic waste being absorbed to the first air inlet and blocking it.

[0023] In some embodiments, a limiting mechanism is also included, which includes a limiting rod and a limiting plug; the limiting rod is located on the inner side of the main body, one end of the limiting rod is connected to the side of the cover body facing the first opening, and the other end of the limiting rod extends toward the tube body along the first direction; the limiting plug is connected to the other end of the limiting rod, and the limiting plug is located between the top wall and the tube body; wherein the top wall is provided with a limiting hole for the limiting rod to pass through, and the aperture of the limiting hole is smaller than the size of the limiting plug in a direction perpendicular to the first direction.

[0024] In the technical solution of the embodiment of the present application, the limiting mechanism includes a limiting rod and a limiting plug; one end of the limiting rod is connected to the side of the cover body facing the first opening, and the other end of the limiting rod extends toward the tube body along the first direction; the limiting plug is connected to the other end of the limiting rod, and the limiting plug is located between the top wall and the tube body; wherein the top wall is provided with a limiting hole for the limiting rod to pass through, and the limiting rod cooperates with the limiting hole to limit the movement of the movable mechanism in a direction perpendicular to the first direction, thereby reducing the risk of collision between the movable mechanism and the fixed mechanism; the aperture of the limiting hole is smaller than the size of the limiting plug in the direction perpendicular to the first direction, and when the movable mechanism is in standby state, the limiting plug can support the movable mechanism and suspend the movable mechanism in the main body, thereby reducing the risk of collision between the movable mechanism and the tube body and causing damage to both.

[0025] In some embodiments, the length direction of the limiting rod is parallel to the first direction, the hole wall of the limiting hole fits with the outer peripheral surface of the limiting rod, and the hole wall of the limiting hole is in sliding contact with the outer peripheral surface of the limiting rod.

[0026] In the technical solution of the embodiment of the present application, the length direction of the limit rod is parallel to the first direction, and the hole wall of the limit hole is in contact with the outer peripheral surface of the limit rod. The limit rod can limit the moving direction of the movable mechanism through the limit hole, thereby reducing the risk of the movable mechanism deviating from the first direction during movement.

[0027] In some embodiments, the limiting mechanism further includes an elastic member, two ends of the elastic member are respectively connected to the cover body and the top wall, and the elastic member is sleeved on the limiting rod.

[0028] In the technical solution of the embodiment of the present application, the limiting mechanism also includes an elastic part, the two ends of the elastic part are respectively connected to the cover body and the top wall, when the movable mechanism is in a working state, the elastic part is in a compressed state, when the movable mechanism changes from a working state to a standby state, the elastic force of the spring is transmitted to the movable mechanism, thereby accelerating the movement speed of the movable mechanism, when the movable mechanism is in a standby state, the elastic part is in a compressed state or a natural state, when the elastic part is in a compressed state, the elastic part presses the movable mechanism against the limit plug, thereby reducing the risk of the movable mechanism moving on its own and colliding, thereby causing damage to itself.

[0029] In some embodiments, in the first direction, the size of the top wall is h, and the distance between the air pipe and the surface of the limiting plug facing away from the air pipe is H3, satisfying H1≥H3+h.

[0030] In the technical solution of the embodiment of the present application, in the first direction, the size of the top wall is h, the distance between the gas pipe and the surface of the limiting plug away from the gas pipe is H3, satisfying H1≥H3+h, and when the movable mechanism is in standby state, the positions of the first aeration port and the second active cavity completely correspond to each other, and the ammonia in the fermentation tank can more easily enter the wider second active cavity but not easily enter the gap between the narrow side wall and the side wall of the main body, thereby reducing the risk of ammonia entering the gas pipe and corroding the gas pipe.

[0031] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through the practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following drawings only show certain embodiments of the present application and therefore should not be regarded as limiting the scope. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying creative work.

[0033] Figure 1 A schematic diagram of a structure in which an aeration device provided in some embodiments of the present application is installed on a gas pipeline;

[0034] Figure 2 A front view of an aeration device provided in some embodiments of the present application installed on a gas pipeline;

[0035] Figure 3 A schematic diagram of the structure of an aeration device provided in some embodiments of the present application;

[0036] Figure 4 A side view of an aeration device provided for some embodiments of the present application;

[0037] Figure 5 When the active mechanism is in standby mode Figure 4 The cross-sectional view at AA in FIG.

[0038] Figure 6 When the activity mechanism is in working state Figure 4 Sectional view at AA in

[0039] Figure 7 When some of the aeration devices in the whole composed of multiple aeration devices are blocked and the movable mechanism is in working state Figure 4 The cross-sectional view at AA in FIG.

[0040] Figure 8 An exploded view of an aeration device provided in some embodiments of the present application;

[0041] Fig. 9 A schematic diagram of the structure of a cover body provided in some embodiments of the present application.

[0042] Icons: 1-air pipe; 2-aeration device; 20-fixing mechanism; 200-first aeration port; 201-first air inlet; 202-first movable cavity; 203-second movable cavity; 204-main body; 2040-first opening; 2041-second opening; 205-cover body; 2050-convex ring; 206-tube body; 21-movable mechanism; 210-second aeration port; 211-top wall; 212-side wall; 22-check mechanism; 220-sealing member; 221-mask member; 2210-air inlet; 23-limiting mechanism; 230-limiting rod; 231-limiting plug; 232-elastic member; X-first direction. DETAILED DESCRIPTION

[0043] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0044] Unless otherwise defined, all technical and scientific terms used in this application have the same meaning as those commonly understood by technicians in the technical field of this application; the terms used in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application; the terms "including" and "having" in the specification and claims of this application and the above-mentioned drawings and any variations thereof are intended to cover non-exclusive inclusions. The terms "first", "second", etc. in the specification and claims of this application or the above-mentioned drawings are used to distinguish different objects, rather than to describe a specific order or a primary and secondary relationship.

[0045] Reference to "embodiments" in this application means that a particular feature, structure, or characteristic described in conjunction with the embodiments may be included in at least one embodiment of the present application. The appearance of the phrase in various locations in the specification does not necessarily refer to the same embodiment, nor is it an independent or alternative embodiment that is mutually exclusive with other embodiments. It is explicitly and implicitly understood by those skilled in the art that the embodiments described in this application may be combined with other embodiments.

[0046] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "attached" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0047] The term "and / or" in this application is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this application generally indicates that the associated objects before and after are in an "or" relationship.

[0048] The term "multiple" as used in this application refers to more than two (including two). Similarly, "multiple groups" refers to more than two groups (including two groups), and "multiple sheets" refers to more than two sheets (including two sheets).

[0049] The inventors noticed that during the actual application of the existing aeration device, there is a component for closing the aeration port in the aeration device, and the closing component divides the aeration device into two chambers, one of which is connected to the air pipe. When the aeration device is closed, the aeration device is changed from a working device to a standby state, and the aeration port is changed from an open state to a closed state, and the air pipe stops supplying air to the aeration device. Due to the decrease in internal air pressure in the chamber in which the aeration device is connected to the air pipe, the component for closing the aeration port moves toward the air pipe, and the volume of the other chamber in the aeration device increases, and the air pressure in the chamber decreases, thereby forming a negative pressure to adsorb the component for closing the aeration port, slowing down the movement rate of the component for closing the aeration port, and the aeration port cannot be closed in time, resulting in ammonia in the fermentation tank being able to enter the air pipe connected to the aeration device through the aeration port. Ammonia will corrode the inner wall of the air pipe and reduce the service life of the air pipe.

[0050] Based on the above considerations, in order to solve the problem that ammonia easily enters the gas pipe and corrodes it, thereby reducing the service life of the gas pipe, the inventor has designed an aeration device after in-depth research. The aeration device includes a fixed mechanism, a movable mechanism and a non-return mechanism. The movable mechanism moves to close the aeration port. The fixed mechanism is provided with a first near-air hole. The non-return mechanism includes a blocking member. The blocking member controls the opening and closing of the first air hole. By opening the first air hole when the air pressure in the inner cavity of the fixed mechanism is negative pressure, the air pressure in the inner cavity is released from the negative pressure state, thereby reducing the risk of the negative pressure state of the cavity inside the fixed mechanism slowing down the movement rate of the movable mechanism, and reducing the risk of ammonia entering the gas pipe when the aeration device is switched from a working state to a standby state, thereby improving the service life of the gas pipe connected to the aeration device.

[0051] The present application is further described below in conjunction with the accompanying drawings, but the protection scope of the present application is not limited to the following description.

[0052] like Figure 1 to Figure 6 As shown, the present application provides an aeration device 2 for releasing air in an air pipe 1 into a fermentation tank, the aeration device 2 comprising a fixed mechanism 20, a movable mechanism 21 and a non-return mechanism 22; the fixed mechanism 20 is fixedly mounted on the air pipe 1, and the fixed mechanism 20 is communicated with the air pipe 1, the fixed mechanism 20 is provided with a first aeration port 200 and a first air inlet 201; the movable mechanism 21 is movably mounted on the inner side of the fixed mechanism 20, in a first direction X, the movable mechanism 21 is closer to the air pipe 1 than the first air inlet 201, and the movable mechanism 21 is provided with a second aeration port 210; the non-return mechanism 22 comprises a blocking member 220, the blocking member 220 is configured to be able to control the first air inlet 200 when the external air pressure of the fixed mechanism 20 is greater than the internal air pressure of the fixed mechanism 20 The hole 201 is opened, and the blocking member 220 controls the first air inlet 201 to be closed under other circumstances; wherein, the movable mechanism 21 is configured to be movable relative to the fixed mechanism 20 along the first direction X, and the movable mechanism 21 has a working state and a standby state. In the first direction X, when the movable mechanism 21 is in the working state, the first aeration port 200 is at least partially connected with the second aeration port 210, and from one end of the fixed mechanism 20 close to the gas pipe 1 to the other end of the fixed mechanism 20, the second aeration port 210 is not lower than the first aeration port 200. When the movable mechanism 21 is in the standby state, the first aeration port 200 and the second aeration port 210 are staggered with each other, and the end of the second aeration port 210 away from the gas pipe 1 does not exceed the end of the first aeration port 200 close to the gas pipe 1.

[0053] The waste organic matter mentioned in this application includes but is not limited to livestock and poultry manure, hair and other waste materials left over from agricultural and animal husbandry industrial activities that can be used for organic fertilizer fermentation.

[0054] The size of the first aeration port 200 may be larger than that of the second aeration port 210 ; or, the size of the first aeration port 200 may be equal to that of the second aeration port 210 ; or, the size of the first aeration port 200 may be smaller than that of the second aeration port 210 .

[0055] When the movable mechanism 21 moves along the length direction of the fixed mechanism 20 , the staggered portion between the first aeration port 200 and the second aeration port 210 can be blocked by the movable mechanism 21 , and the staggered portion between the second aeration port 210 and the first aeration port 200 can be blocked by the fixed mechanism 20 .

[0056] The X direction shown in the figure is the first direction X.

[0057] The fixed mechanism 20 is fixedly installed on the gas pipe 1, and the movable mechanism 21 can be movably installed on the inner side of the fixed mechanism 20. The movable mechanism 21 divides the internal space of the fixed mechanism 20 into a first movable chamber 202 and a second movable chamber 203. The first movable chamber 202 is closer to the gas pipe 1 than the second movable chamber 203. In the first direction X, the movable mechanism 21 is closer to the gas pipe 1 than the first air inlet 201. The second movable chamber 203 is connected to the outside through the first air inlet 201. The movable mechanism 21 is provided with a second aeration port 210. The connection between the second aeration port 210 and the first aeration port 200 is a vent for the gas in the gas pipe 1 to enter the fermentation tank (i.e., the aeration port in the prior art mentioned above); the non-return mechanism 22 includes a blocking member 220, which is configured to be able to be opened when the external air pressure of the fixed mechanism 20 is greater than the internal air pressure of the fixed mechanism 20 (i.e., the external air pressure is greater than the first air pressure). The first air inlet 201 is controlled to be opened when the air pressure in the second active chamber 203 is lower than that in the second active chamber 203, and the blocking member 220 controls the first air inlet 201 to be closed under other circumstances (i.e., when the external air pressure is less than or equal to the air pressure in the second active chamber 203); wherein, the movable mechanism 21 is configured to be movable relative to the fixed mechanism 20 along the first direction X, and the movable mechanism 21 has a working state and a standby state. In the first direction X, when the movable mechanism 21 is in the working state, the first aeration port 200 is at least partially connected with the second aeration port 210, and from one end of the fixed mechanism 20 close to the gas pipe 1 to the other end of the fixed mechanism 20, the second aeration port 210 is not lower than the first aeration port 200. When the movable mechanism 21 is in the standby state, the first aeration port 200 and the second aeration port 210 are staggered with each other, and the end of the second aeration port 210 away from the gas pipe 1 does not exceed the end of the first aeration port 200 close to the gas pipe 1.

[0058] When the aeration device 2 changes from the standby state to the working state, the air delivery pipe 1 inputs air into the first active chamber 202, the internal pressure of the first active chamber 202 increases, the air pressure of the first active chamber 202 is greater than the air pressure of the second active chamber 203, and the movable mechanism 21 moves away from the air delivery pipe 1 along the first direction X under the impetus of the air pressure difference, the first active chamber 202 increases, and the second active chamber 203 decreases. The second aeration port 210 is connected with the first aeration port 200 to form a vent, and the gas in the first active chamber 202 can enter the aeration tank through the vent, so that the organic waste at the corresponding position of the vent can be fully aerobically fermented;

[0059] When the movable mechanism 21 is in working state, the force exerted on the movable mechanism 21 by the internal air pressure of the first movable chamber 202 is equal to the sum of the force exerted on the movable mechanism 21 by the internal air pressure of the second movable chamber 203 and gravity, and the air in the second movable chamber 203 will escape to the outside through multiple channels such as the gap between the movable mechanism 21 and the fixed mechanism 20 and the first aeration port 200;

[0060] When the movable mechanism 21 is changed from the working state to the standby state, the gas pipe 1 stops inputting gas to the first movable chamber 202, and the gas in the first movable chamber 202 is reduced to the same pressure as the external air pressure. At this time, the ammonia in the fermentation tank may enter the input pipe through the connecting port, and the force applied by the air pressure in the second movable chamber 203 to the movable mechanism 21 and the gravity of the movable mechanism 21 work together to push the movable mechanism 21 to move along the first direction X toward the gas pipe 1, the first movable chamber 202 shrinks, the second movable chamber 203 expands, and the air pressure in the second movable chamber 203 decreases. When the air pressure in the second movable chamber 203 is reduced to the same pressure as the external air pressure At the same time, the movable mechanism 21 continues to move in the original direction under the push of its own gravity, and the second movable chamber 203 continues to expand, so that the internal air pressure decreases to form a negative pressure environment. The sealing member 220 controls the first vent to open in time, and the outside air enters the second movable chamber 203, so that the internal air pressure of the second movable chamber 203 can approach the outside air pressure, thereby reducing the risk of suction on the movable mechanism 21 and slowing down the movement speed of the movable mechanism 21 when the second movable chamber 203 is in a negative pressure environment. The movable mechanism 21 can stably and relatively quickly move toward the gas pipe 1 to close the vent, thereby reducing the risk of ammonia entering the gas pipe 1 and corroding the inner wall of the gas pipe 1.

[0061] like Figure 1 , Figure 2 and 7 As shown, the air delivery pipe 1 and the multiple aeration devices 2 arranged in sequence on the air delivery pipe 1 form a whole. In normal working state, the size of the vent is the largest. When the vent of one or more of the multiple aeration devices 2 is blocked by organic waste, the number of vents of the whole is reduced, the internal pressure of the air delivery pipe 1 increases, and the first active cavity 202 of the aeration device 2 in the whole increases, pushing the movable mechanism 21 to move. With the movement of the movable mechanism 21, the size of the connection between the second aeration port 210 of the aeration device 2 that is not blocked and the first aeration port 200 is gradually reduced, and the total amount of gas in the air delivery pipe 1 passing through the vent is reduced, so that the internal air pressure of the pipeline and the first active cavity 202 of each aeration device 2 is increased. When the air pressure in the first active cavity 202 of the blocked aeration device 2 is large enough, the organic waste blocked at the vent can be flushed away, so that the whole can operate normally, reducing the risk that the aeration device 2 is blocked for a long time, resulting in the organic waste in the corresponding area not being able to obtain sufficient oxygen and thus reducing the fermentation efficiency.

[0062] In some embodiments, Figure 8As shown, there are multiple first aeration ports 200, which are arranged on the fixed mechanism 20 around the first direction X as the axis; there are multiple second aeration ports 210, which are arranged on the movable mechanism 21 around the first direction X as the axis, and one second aeration port 210 is connected to one or more first aeration ports 200.

[0063] The number of the first aeration ports 200 may be two, three, four, five, six, seven, eight, nine, ten or more.

[0064] The number of the second aeration ports 210 may be two, three, four, five, six, seven, eight, nine, ten or more.

[0065] When the size and shape of the first aeration port 200 are the same as the size and shape of the second aeration port 210, one first aeration port 200 can be connected to one second aeration port 210 and the positions can correspond; when the size of the first aeration port 200 is larger than the size of the second aeration port 210, one first aeration port 200 can be set corresponding to multiple second aeration ports 210; when the size of the first aeration port 200 is smaller than the size of the second aeration port 210, one second aeration port 210 can be set corresponding to multiple first aeration ports 200.

[0066] There are multiple first aeration ports 200 and multiple second aeration ports 210, and the multiple first aeration ports 200 and the multiple second aeration ports 210 are all arranged around the first direction X as the axis. On the one hand, the aeration device 2 provided in the present application can discharge air in all directions on a plane perpendicular to the first direction X, and the organic waste surrounding the aeration device 2 can receive sufficient oxygen, thereby increasing the coverage area of ​​a single aeration device 2, so that a small number of aeration devices 2 can meet the oxygen demand required for the fermentation of more organic waste, thereby reducing the number of aeration devices 2 required to be arranged in a unit space and reducing the use cost of the aeration device 2; on the other hand, the aeration device 2 can discharge air in all directions on a plane perpendicular to the first direction X. When a part of the first aeration ports 200 or the second aeration ports 210 of the aeration device 2 provided in the present application is blocked by organic waste, the first aeration ports 200 and the second aeration ports 210 of the other part of the aeration device 2 can still continue to operate, so that the fermentation process of the surrounding organic waste can continue;

[0067] A second aeration port 210 is connected to one or more first aeration ports 200, and the size or number of the connection points between each second aeration port 210 and the first aeration port 200 can be adjusted by rotating the movable mechanism 21, thereby changing the amount of air released by the aeration device 2 per unit time to meet the fermentation requirements of organic waste of different compositions or quantities.

[0068] In some embodiments, Figure 6-7 As shown, the blocking member 220 is elastic, and the blocking member 220 is located on the inner side of the fixing mechanism 20, and the two ends of the blocking member 220 are respectively located on both sides of the first air inlet hole 201; the blocking member 220 has a blocking state and an open state. When the blocking member 220 is in the blocking state, the blocking member 220 blocks the first air inlet hole 201, and the blocking member 220 and the fixing mechanism 20 are in contact with the surface opposite to the air pipe 1 along the first direction X. When the blocking member 220 is in the open state, the blocking member 220 is deformed in a direction away from the first air inlet hole 201, so that the first air inlet hole 201 is opened.

[0069] The blocking member 220 may be made of elastic materials such as rubber, elastic metal, etc.

[0070] When there are multiple first vent holes, there can be multiple blocking members 220 , and the multiple first vent holes correspond to the blocking members 220 one by one.

[0071] The blocking member 220 is elastic, and is located inside the fixing mechanism 20. Two ends of the blocking member 220 are respectively located on two sides of the first air inlet 201. One end of the blocking member 220 can be connected to the fixing mechanism 20, and the other end of the blocking member 220 can be in contact with the fixing mechanism 20.

[0072] When the external air pressure is less than or equal to the air pressure of the second active chamber 203, the blocking member 220 is in a blocking state, the fixing mechanism 20 limits the deformation of the blocking member 220 toward the first air inlet 201, the blocking member 220 abuts against the fixing mechanism 20, and the blocking member 220 is able to control the first air inlet 201 to close, so that the air pressure inside the second active chamber 203 can be greater than the external air pressure when the active mechanism 21 is in the working state, and the internal air pressure of the second active chamber 203 can do work on the active mechanism 21 in the process of the active mechanism 21 changing from the working state to the standby state, thereby accelerating the moving speed of the active mechanism 21; when the active mechanism 21 moves and causes the external air pressure to be greater than the second active chamber 203, the air pressure inside the second active chamber 203 can be greater than the external air pressure, thereby accelerating the moving speed of the active mechanism 21. When the air pressure in the second movable chamber 203 is low, the blocking member 220 is in an open state. The blocking member 220 is deformed in a direction away from the first air inlet 201 under the push of the air pressure difference between the second movable chamber 203 and the outside world, so that the first air inlet 201 is opened, and the outside air can enter the second movable chamber 203 through the first air inlet 201, so that the second movable chamber 203 can quickly get out of the negative pressure state, reducing the risk of the second movable chamber 203 being in a negative pressure state and slowing down its movement speed by the adsorption movable mechanism 21, and the vent can be closed quickly, reducing the probability of ammonia in the fermentation tank entering the air pipe 1 through the vent and corroding the inner wall of the air pipe 1, thereby increasing the service life of the air pipe 1.

[0073] In some embodiments, Figure 5 to Figure 7As shown, the movable mechanism 21 includes a top wall 211 and a side wall 212, one end of the side wall 212 is connected to the top wall 211, and the side wall 212 extends toward the gas pipe 1 along the first direction X. The side wall 212 is adapted to the shape of the inner wall of the fixing mechanism 20 and the side wall 212 is close to the inner wall of the fixing assembly, and the second aeration port 210 is arranged on the side wall 212; in the first direction X, the size of the first aeration port 200 is L1, the size of the second aeration port 210 is L2, the size between the gas pipe 1 and the first aeration port 200 is H1, and the size between the gas pipe 1 and the second aeration port 210 is H2; when the movable mechanism 21 is in the working state, H1+L1≥H2≥H1 is satisfied; when the movable mechanism 21 is in the standby state, H1≥H2+L2 is satisfied.

[0074] When the movable mechanism 21 is in working state and H2>H1+L1, the first aeration port 200 and the second aeration port 210 are staggered, the aeration device 2 stops inputting air into the fermentation tank, and the air pressure inside the first movable chamber 202 gradually increases with the air input from the air delivery pipe 1. The air delivery pipe 1 and the fixed mechanism 20 are at risk of exploding due to excessive internal air pressure;

[0075] When the movable mechanism 21 is in working state and H2

[0076] When the movable mechanism 21 is in the standby state and H1<H2+L2, the first aeration port 200 is connected with the second aeration port 210, and the ammonia in the fermentation tank may enter the gas pipe 1 through the aeration port and corrode the inner wall of the gas pipe 1, thereby reducing the service life of the gas pipe 1.

[0077] ​The movable mechanism 21 includes a top wall 211 and a side wall 212, and the second aeration port 210 is arranged on the side wall 212. The side wall 212 is adapted to the shape of the inner wall of the fixing mechanism 20 and the side wall 212 is close to the fixing mechanism 20, so that the gap between the side wall 212 and the fixing mechanism 20 is small, and the gas that escapes from the second movable chamber 203 through the side wall 212 and the fixing mechanism 20 is small. The second movable chamber 203 can have a large air pressure inside when the movable mechanism 21 is in the working state. On the one hand, the second movable chamber 203 can It can provide a large driving force for the movable mechanism 21 during the process of the movable mechanism 21 changing from the working state to the standby state, thereby increasing the moving speed of the movable mechanism 21. On the other hand, the time and number of times that the second movable chamber 203 changes to the negative pressure state during the process of the movable mechanism 21 changing from the working state to the standby state are shorter, thereby reducing the frequency of the blocking member 220 controlling the first vent hole to switch back and forth between the open state and the closed state, thereby reducing the probability of the blocking member 220 being worn during repeated activities, thereby increasing the service life of the blocking member 220.

[0078] In the first direction X, the size of the first aeration port 200 is L1, the size of the second aeration port 210 is L2, the size between the air delivery pipe 1 and the first aeration port 200 is H1, and the size between the air delivery pipe 1 and the second aeration port 210 is H2; when the movable mechanism 21 is in a working state, H1+L1≥H2≥H1 is satisfied, and the second aeration port 210 of the movable mechanism 21 is at least partially connected to the first aeration port 200, so that the aeration device 2 provided in the present application can continuously output air to the surrounding organic waste;

[0079] When the movable mechanism 21 is in the standby state, H1 ≥ H2 + L2 is satisfied, and the second aeration port 210 and the first aeration port 200 can be kept staggered, thereby reducing the risk of ammonia in the fermentation tank entering the gas pipe 1 through the vent.

[0080] In some embodiments, Figure 5 to Figure 7 As shown, the fixing mechanism 20 includes a main body 204, a cover body 205 and a tube body 206; the main body 204 has a first opening 2040 and a second opening 2041 opposite to each other, a movable mechanism 21 is arranged on the inner side of the main body 204, and the main body 204 is provided with a first aeration port 200; the cover body 205 is used to block the first opening 2040, the cover body 205 is provided with a first air inlet 201, and the check mechanism 22 is connected to the side of the cover body 205 facing the main body 204; the tube body 206 is respectively connected to the second opening 2041 and the pipeline; wherein, in the first direction X, the movable mechanism 21 does not exceed the main body 204.

[0081] The length direction of the main body 204 is parallel to the first direction X, and the length direction of the tube body 206 can be perpendicular to the first direction X. During use, the tube body 206 is mostly placed horizontally on a horizontal plane. At this time, the length direction of the main body 204 is perpendicular to the horizontal plane. When the movable mechanism 21 is changing from a working state to a standby state, the gravity of the movable mechanism 21 is also perpendicular to the horizontal plane. The direction of the gravity of the movable mechanism 21 is the same as the moving direction of the movable mechanism 21. The gravity received by the movable mechanism 21 can all act on increasing the moving speed of the movable mechanism 21, thereby accelerating the rate of state change of the movable mechanism 21.

[0082] The main body 204 has a relative first opening 2040, and the cover body 205 is used to block the first opening 2040. The cover body 205 is provided with a first air inlet 201. The check mechanism 22 is connected to the side of the cover body 205 facing the main body 204. The main body 204 and the cover body 205 are designed to be separate bodies, and can be disassembled so that the main body 204 and the components inside it can be maintained or replaced in time, thereby improving the service life of the fixing mechanism 20.

[0083] In some embodiments, Figures 5 to 9 As shown, the cover body 205 is provided with a convex ring 2050 protruding from the surface of the cover body 205 facing the first opening 2040, the convex ring 2050 extends to the inner side of the main body 204, and the convex ring 2050 is adapted to the shape of the inner wall of the main body 204. When assembling the main body 204 and the cover body 205, the cover body 205 can be quickly positioned with the main body 204 through the convex ring 2050, thereby reducing the difficulty of assembling the cover body 205 and the main body 204.

[0084] In some embodiments, Figures 1 to 9 As shown, the non-return mechanism 22 also includes a mask member 221, which is covered on the side of the cover body 205 away from the main body 204, and the mask member 221 is provided with an air inlet 2210. On a plane perpendicular to the first direction X, the first air inlet hole 201 is located on the inner side of the mask member 221, and the internal space of the mask member 221 is connected with the internal space of the fixing mechanism 20 through the first air inlet hole 201.

[0085] In the first direction X, the air inlet 2210 of the mask 221 may exceed the top surface of the accumulated organic waste in the fermentation tank.

[0086] The non-return mechanism 22 also includes a mask member 221, which is covered on the side of the cover body 205 away from the main body 204. The mask member 221 is provided with an air inlet 2210, and the number of the air inlet 2210 can be multiple. On the plane perpendicular to the first direction X, the first air inlet 201 is located on the inner side of the mask member 221, and the internal space of the mask member 221 is connected with the internal space of the fixing mechanism 20 through the first air inlet 201. When the second active cavity 203 is in a negative pressure state, the blocking member 220 controls the first air inlet 201 to open, and the first air inlet 201 absorbs the outside world. The outside air needs to enter the mask member 221 first, and then enter the second active cavity 203 through the first air inlet 201. The air inlet 2210 blocks the surrounding organic waste to reduce the risk of organic waste being absorbed to the first air inlet 201 and blocking it.

[0087] In some embodiments, Figures 5 to 8 As shown, it also includes a limiting mechanism 23, which includes a limiting rod 230 and a limiting plug 231; the limiting rod 230 is located on the inner side of the main body 204, one end of the limiting rod 230 is connected to the side of the cover body 205 facing the first opening 2040, and the other end of the limiting rod 230 extends toward the tube body 206 along the first direction X; the limiting plug 231 is connected to the other end of the limiting rod 230, and the limiting plug 231 is located between the top wall 211 and the tube body 206; wherein the top wall 211 is provided with a limiting hole for the limiting rod 230 to pass through, and the aperture of the limiting hole is smaller than the size of the limiting plug 231 in the direction perpendicular to the first direction X.

[0088] The limiting plug 231 can be a nut, and the end of the limiting rod 230 away from the cover body 205 is provided with a thread for adapting to the limiting plug 231; or, the limiting plug 231 can be an annular structural part, the limiting plug 231 is sleeved on the limiting rod 2301020, and the limiting plug 231 and the limiting part are interference fit.

[0089] The limiting mechanism 23 includes a limiting rod 230 and a limiting plug 231; one end of the limiting rod 230 is connected to the side of the cover body 205 facing the first opening 2040, and the other end of the limiting rod 230 extends toward the tube body 206 along the first direction X; the limiting plug 231 is connected to the other end of the limiting rod 230, and the limiting plug 231 is located between the top wall 211 and the tube body 206; wherein the top wall 211 is provided with a limiting hole for the limiting rod 230 to pass through, and the limiting rod 230 and the limiting hole are connected. Cooperate to limit the movement of the movable mechanism 21 in a direction perpendicular to the first direction X, thereby reducing the risk of collision between the movable mechanism 21 and the fixed mechanism 20; the aperture of the limiting hole is smaller than the size of the limiting plug 231 in a direction perpendicular to the first direction X. When the movable mechanism 21 is in the standby state, the limiting plug 231 can support the movable mechanism 21 and suspend the movable mechanism 21 in the main body 204, thereby reducing the risk of collision between the movable mechanism 21 and the tube body 206, thereby causing damage to both.

[0090] In some embodiments, Figure 5 to Figure 7 As shown, the length direction of the limiting rod 230 is parallel to the first direction X, the hole wall of the limiting hole fits with the outer peripheral surface of the limiting rod 230, and the hole wall of the limiting hole is in sliding contact with the outer peripheral surface of the limiting rod 230.

[0091] The length direction of the limiting rod 230 is parallel to the first direction X, and the hole wall of the limiting hole fits the outer peripheral surface of the limiting rod 230. The limiting rod 230 can limit the moving direction of the movable mechanism 21 through the limiting hole, reducing the risk of the movable mechanism 21 deviating from the first direction X during movement.

[0092] In some embodiments, Figures 5 to 9 As shown, the limiting mechanism 23 further includes an elastic member 232 , two ends of the elastic member 232 are respectively connected to the cover body 205 and the top wall 211 , and the elastic member 232 is sleeved on the limiting rod 230 .

[0093] The elastic member 232 may be, but is not limited to, a spring.

[0094] The limiting mechanism 23 also includes an elastic member 232, the two ends of which are respectively connected to the cover body 205 and the top wall 211. When the movable mechanism 21 is in a working state, the elastic member 232 is in a compressed state. When the movable mechanism 21 changes from a working state to a standby state, the elastic force of the spring is transmitted to the movable mechanism 21 to accelerate the movement speed of the movable mechanism 21. When the movable mechanism 21 is in a standby state, the elastic member 232 is in a compressed state or a natural state. When the elastic member 232 is in a compressed state, the elastic member 232 presses the movable mechanism 21 against the limit plug 231, thereby reducing the risk of the movable mechanism 21 moving on its own and colliding, causing damage to itself.

[0095] In some embodiments, Figure 5As shown, in the first direction X, the size of the top wall 211 is h, and the distance between the gas pipe 1 and the surface of the limiting plug 231 away from the gas pipe 1 is H3, satisfying H1≥H3+h.

[0096] When the movable mechanism 21 is in the standby state and H1<H3+h, a portion of the first aeration port 200 corresponds to the position of the side wall 212 of the movable mechanism 21. When the ammonia in the fermentation tank enters the fixed mechanism 20 through the portion of the first aeration port 200 corresponding to the position of the side wall 212 of the movable mechanism 21, the ammonia may be blocked by the side wall 212 and turn to enter the gap between the side wall 212 and the main body 204, thereby entering the gas pipe 1 and corroding the inner wall of the gas pipe 1, thereby reducing the service life of the gas pipe 1.

[0097] In the first direction X, the size of the top wall 211 is h, and the distance between the gas pipe 1 and the surface of the limiting plug 231 away from the gas pipe 1 is H3, satisfying H1≥H3+h. When the movable mechanism 21 is in the standby state, the positions of the first aeration port 200 and the second active cavity 203 completely correspond to each other, and the ammonia in the fermentation tank is more likely to enter the wider second active cavity 203 but not easy to enter the gap between the narrow side wall 212 and the side wall 212 of the main body 204, thereby reducing the risk of ammonia entering the gas pipe 1 and corroding the gas pipe 1.

[0098] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An aeration device for releasing air in an air delivery pipe into a fermentation tank, characterized in that: include: A fixing mechanism, fixedly mounted on the gas pipe, the fixing mechanism is in communication with the gas pipe, and the fixing mechanism is provided with a first aeration port and a first air inlet; A movable mechanism is movably mounted inside the fixed mechanism, and in a first direction, the movable mechanism is closer to the gas pipe than the first air inlet hole, and the movable mechanism is provided with a second aeration port; The non-return mechanism comprises a blocking member, wherein the blocking member is configured to control the first air inlet hole to be opened when the external air pressure of the fixing mechanism is greater than the internal air pressure of the fixing mechanism, and the blocking member controls the first air inlet hole to be closed in other cases; In which, the movable mechanism is configured to be movable relative to the fixed mechanism along the first direction, and the movable mechanism has a working state and a standby state. In the first direction, when the movable mechanism is in the working state, the first aeration port is at least partially connected to the second aeration port, from one end of the fixed mechanism close to the gas pipe to the other end of the fixed mechanism, the second aeration port is not lower than the first aeration port. When the movable mechanism is in the standby state, the first aeration port and the second aeration port are staggered with each other, and the end of the second aeration port away from the gas pipe does not exceed the end of the first aeration port close to the gas pipe.

2. An aeration device according to claim 1, characterized in that: There are multiple first aeration ports, and the multiple first aeration ports are arranged around the fixing mechanism with the first direction as an axis; There are multiple second aeration ports, and the multiple second aeration ports are arranged around the movable mechanism with the first direction as an axis. One second aeration port is connected to one or more first aeration ports.

3. An aeration device according to claim 1, characterized in that: The blocking member is elastic, and is located inside the fixing mechanism, and two ends of the blocking member are respectively located on two sides of the first air inlet; The blocking member has a blocking state and an open state. When the blocking member is in the blocking state, the blocking member blocks the first air inlet hole, and the blocking member and the fixing mechanism are in contact with the surface opposite to the air pipe along the first direction. When the blocking member is in the open state, the blocking member is deformed in a direction away from the first air inlet hole, so that the first air inlet hole is opened.

4. An aeration device according to claim 1, characterized in that: The movable mechanism comprises a top wall and a side wall, one end of the side wall is connected to the top wall, the side wall extends toward the gas pipe along the first direction, the side wall is adapted to the shape of the inner wall of the fixed mechanism and the side wall is closely attached to the inner wall of the fixed mechanism, and the second aeration port is arranged on the side wall; In the first direction, the size of the first aeration port is L1, the size of the second aeration port is L2, the size between the gas delivery pipe and the first aeration port is H1, and the size between the gas delivery pipe and the second aeration port is H2; When the movable mechanism is in the working state, H1+L1≥H2≥H1 is satisfied; When the movable mechanism is in the standby state, H1≥H2+L2 is satisfied.

5. An aeration device according to claim 4, characterized in that: The fixing mechanism comprises: A main body having a first opening and a second opening opposite to each other, the movable mechanism is arranged inside the main body, and the main body is provided with the first aeration port; A cover body, used for blocking the first opening, the cover body is provided with the first air inlet hole, and the non-return mechanism is connected to a side of the cover body facing the main body; a tube body, connected to the second opening and the pipeline respectively; Wherein, in the first direction, the movable mechanism does not exceed the main body.

6. An aeration device according to claim 5, characterized in that: The non-return mechanism also includes a mask member, which is covered on the side of the cover body away from the main body. The mask member is provided with an air inlet. On a plane perpendicular to the first direction, the first air inlet is located on the inner side of the mask member, and the internal space of the mask member is connected with the internal space of the fixing mechanism through the first air inlet.

7. An aeration device according to claim 5, characterized in that: Also included is a restriction mechanism, the restriction mechanism comprising: A limiting rod, located inside the main body, one end of the limiting rod is connected to a side of the cover body facing the first opening, and the other end of the limiting rod extends toward the tube body along the first direction; A limiting plug connected to the other end of the limiting rod, the limiting plug being located between the top wall and the tube body; Wherein, the top wall is provided with a limiting hole for the limiting rod to pass through, and the aperture of the limiting hole is smaller than the dimension of the limiting plug in a direction perpendicular to the first direction.

8. An aeration device according to claim 7, characterized in that: The length direction of the limiting rod is parallel to the first direction, the hole wall of the limiting hole is in contact with the outer peripheral surface of the limiting rod, and the hole wall of the limiting hole is in sliding contact with the outer peripheral surface of the limiting rod.

9. An aeration device according to claim 7, characterized in that: The limiting mechanism further includes an elastic member, two ends of which are respectively connected to the cover body and the top wall, and the elastic member is sleeved on the limiting rod.

10. An aeration device according to claim 7, characterized in that: In the first direction, the size of the top wall is h, and the distance between the gas pipe and the surface of the limiting plug away from the gas pipe is H3, satisfying H1≥H3+h.

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