Layered oxygen control double-cavity organic fertilizer efficient fermentation device

Abstract

The application provides a layered oxygen control double-cavity organic fertilizer efficient fermentation device, and belongs to the technical field of organic fertilizer fermentation equipment. The device comprises a support frame, a fermentation tank is fixedly connected to the top of the support frame, an upper chamber and a lower chamber are arranged in the fermentation tank, a feeding port is fixedly connected to the top of the upper chamber, a discharging port is fixedly connected to the bottom of the lower chamber, an electric control valve is fixedly connected between the upper chamber and the lower chamber, the electric control valve is used for controlling the communication or separation between the upper chamber and the lower chamber, and a groove is arranged in the inner wall of the lower chamber. The device is provided with a stirring and discharging mechanism. In the open state of the valve plate, the screw rod is rotated through the meshing transmission between the second bevel gear and the first bevel gear, and the wet and sticky material in the upper chamber is forced to push to the lower chamber after pre-fermentation treatment, so that the risk of material accumulation at the discharging port is effectively eliminated, and the transfer of the material from the upper chamber to the lower chamber is ensured.

Description

Technical Field

[0001] This invention relates to the field of organic fertilizer fermentation equipment technology, and in particular to a layered oxygen-controlled dual-chamber high-efficiency organic fertilizer fermentation device. Background Technology

[0002] Organic fertilizer fermentation is a process that uses organic waste such as livestock and poultry manure and crop straw as raw materials, and transforms the materials into stable, well-rotted organic fertilizer through the metabolic activities of microorganisms. Aerobic fermentation has become the mainstream process for organic fertilizer preparation due to its advantages such as rapid heating rate, excellent harmless treatment effect, and short fermentation cycle. During the fermentation process, a continuous and sufficient oxygen supply is a key condition for the large-scale proliferation of thermophilic aerobic microorganisms and the efficient degradation of organic substrates. At the same time, the form of oxygen supply and the uniformity of oxygen distribution will determine the fermentation efficiency, product quality, and the level of odorous gas generation.

[0003] In summary, during the fermentation process of organic fertilizer in a dual-chamber organic fertilizer fermentation tank, the material fermented in the upper chamber is characterized by high viscosity and high fiber content. When the material is transferred from the upper chamber to the lower chamber, it is prone to obstruction or even jamming. This can interrupt the transfer of organic fertilizer from the upper chamber to the lower chamber. At the same time, the inability of the valve plate to close properly can cause high concentrations of oxygen and high-temperature water vapor in the upper chamber to enter the lower chamber, thereby interfering with the preset oxygen concentration gradient in the lower chamber. This makes it difficult to maintain a stable micro-oxygen environment at the top of the lower chamber, which in turn affects the overall fermentation effect and the uniformity of composting.

[0004] Therefore, this application provides a layered oxygen-controlled dual-chamber high-efficiency fermentation device for organic fertilizer to meet the requirements. Summary of the Invention

[0005] The purpose of this invention is to provide a layered oxygen-controlled dual-chamber high-efficiency fermentation device for organic fertilizer to solve the above-mentioned problems. When the valve plate of the electrically controlled valve rotates to the closed position, the sliding groove on the valve plate squeezes the first ball at the bottom of the spiral rod, pushing the spiral rod upward. Through the fixed shaft, the second bevel gear overcomes the pressure of the first spring and slides upward, disengaging from the first bevel gear, and the spiral rod stops rotating. At the same time, the stop block abuts against the connecting block, locking the spiral rod circumferentially. When the valve plate rotates to the open position, the stop block disengages from the connecting block, the first ball loses its support, the first spring pushes the second bevel gear downward to re-engage with the first bevel gear, and the spiral rod moves downward and extends into the valve chamber. The geared motor drives the stirring rod to rotate, which, through the bevel gear engagement, drives the spiral rod to rotate actively, forcibly conveying the material in the upper chamber to the lower chamber, thereby eliminating the risk of material accumulation at the discharge port and ensuring the transfer of material from the upper chamber to the lower chamber, thus solving the problems mentioned in the background art.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A layered oxygen-controlled dual-chamber high-efficiency organic fertilizer fermentation device includes a support frame, a fermentation tank fixedly connected to the top of the support frame, an upper chamber and a lower chamber inside the fermentation tank, a feed inlet fixedly connected to the top of the upper chamber, a discharge outlet fixedly connected to the bottom of the lower chamber, an electrically controlled valve fixedly connected between the upper and lower chambers for controlling the connection or isolation between the upper and lower chambers, a groove formed on the inner wall of the lower chamber, a loosening mechanism inside the lower chamber, a reduction motor fixedly connected to the top of the support frame, and a stirring and feeding mechanism at the output end of the reduction motor.

[0008] Optionally, the mixing and feeding mechanism includes a mixing rod, which is fixedly connected to the output end of a reduction motor. A mixing blade is fixedly connected to the outer wall of the mixing rod. The mixing blade agitates the organic fertilizer in the upper chamber, thereby increasing the contact area between the organic fertilizer and the gas in the chamber. A cavity is formed in the inner wall of the mixing rod. A first bevel gear is fixedly connected to the bottom inner wall of the cavity. A second bevel gear is slidably connected to the inner wall of the cavity. A fixed shaft is fixedly connected to the inner wall of the second bevel gear. The end of the fixed shaft passes through the cavity and is fixedly connected to a spiral rod.

[0009] Optionally, a first spring is fixedly connected to the top of the second bevel gear, and a rotating block is fixedly connected to the end of the first spring away from the second bevel gear. The rotating block is rotatably connected to the inner wall of the stirring rod, so that when the first spring rotates with the second bevel gear, its upper end can rotate freely relative to the stirring rod. The first spring is used to press the second bevel gear downward.

[0010] Optionally, a first ball bearing is tumblingly connected to the bottom end of the spiral rod, and a connecting block is fixedly connected to the outer wall of the spiral rod near the first ball bearing.

[0011] Optionally, the loosening mechanism includes a connecting frame, the inner wall of which is rotatably connected to a second ball bearing, which is rolled along the inner wall of the groove.

[0012] Optionally, a guide sleeve is fixedly connected to the outer wall of the connecting frame, and a helical impeller is provided at the bottom of the connecting frame.

[0013] Optionally, a sliding column is fixedly connected to the outer wall of the spiral impeller. The end of the sliding column away from the spiral impeller passes through the guide sleeve and is fixedly connected to a second spring. The end of the second spring is fixedly connected to the inner wall of the guide sleeve. When the spiral impeller is impacted by falling material, it can generate floating displacement along the guiding direction of the guide sleeve and be reset by the second spring, so that the organic fertilizer falling onto the surface of the spiral impeller can be detached.

[0014] Optionally, a striking rod is fixedly connected to the outer surface of the spiral impeller. The falling material impacts the blade surface of the spiral impeller, driving the spiral impeller and the connecting frame to rotate circumferentially. During the rotation, the striking rod strikes and cuts the falling organic fertilizer, breaking up the clumps of material.

[0015] Optionally, a valve plate is rotatably connected to the inner wall of the electrically controlled valve, and a sliding groove is formed on the outer surface of the valve plate.

[0016] Optionally, a stop block is fixedly connected to the outer wall of the valve plate near the sliding groove. When the valve plate is closed, the stop block abuts against the connecting block to restrict the rotation of the screw rod. When the valve plate is opened, the stop block and the connecting block separate from each other, thereby releasing the rotation constraint on the screw rod. The stop block is used to restrict the rotation of the screw rod when the valve plate is closed and to release the rotation constraint on the screw rod when the valve plate is open.

[0017] Optionally, when the valve plate is opened, the first spring pushes the second bevel gear to mesh with the first bevel gear, causing the screw rod and the stirring rod to rotate synchronously.

[0018] Compared with the prior art, the present invention has at least the following beneficial effects:

[0019] In the above scheme, the layered oxygen-controlled dual-chamber organic fertilizer high-efficiency fermentation device provided in this application, by setting up a stirring and feeding mechanism, when the valve plate is open, the screw rod rotates by means of the meshing transmission between the second bevel gear and the first bevel gear, forcibly pushing the pre-fermented wet and sticky material in the upper chamber to the lower chamber, thereby effectively eliminating the risk of material accumulation at the discharge port and ensuring the transfer of material from the upper chamber to the lower chamber;

[0020] Meanwhile, by setting a sliding groove and a stop, during the valve plate closing process, the sliding groove drives the screw rod to generate axial displacement and rise upward, while the stop applies a circumferential locking effect to the screw rod, ensuring that the screw rod remains completely stationary. Thus, the screw rod and the dense wet material filled inside the valve cavity together form a static closed barrier, which can effectively prevent high concentration oxygen and high temperature water vapor in the upper chamber from entering the lower chamber, thereby ensuring that the oxygen concentration gradient in the lower chamber is not disturbed. Attached Figure Description

[0021] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments of the invention and, together with the specification, further serve to explain the principles of the invention and enable those skilled in the art to practice and use the invention.

[0022] Figure 1 This is a schematic diagram of the overall front structure of the present invention;

[0023] Figure 2 This is a schematic diagram of the overall front cross-sectional structure of the present invention;

[0024] Figure 3 This is a schematic diagram of the internal structure of the fermenter of the present invention;

[0025] Figure 4 This is a schematic diagram of the structure of the geared motor and the mixing and feeding mechanism of the present invention;

[0026] Figure 5 This is a schematic diagram of the mixing and feeding mechanism and the electrically controlled valve of the present invention;

[0027] Figure 6 This is a schematic diagram of the loose mechanism structure of the present invention;

[0028] Figure 7 This is a schematic diagram of the structure of the organic fertilizer mixture according to the present invention;

[0029] Figure 8 This is a schematic diagram of the structure of the organic fertilizer entering the lower chamber according to the present invention;

[0030] Figure 9 For the present invention Figure 7 A magnified structural diagram of A in the middle.

[0031] Figure label:

[0032] 1. Support frame; 2. Fermentation tank; 3. Feed inlet; 4. Discharge outlet; 5. Upper chamber; 6. Lower chamber; 61. Groove; 7. Electrically controlled valve; 701. Valve plate; 702. Sliding groove; 703. Stop block; 8. Gear motor; 9. Stirring and feeding mechanism; 901. Stirring rod; 902. First bevel gear; 903. Second bevel gear; 904. Fixed shaft; 905. First spring; 906. Spiral rod; 907. Connecting block; 908. First ball bearing; 909. Cavity; 910. Rotating block; 10. Loosening mechanism; 1001. Connecting frame; 1002. Second ball bearing; 1003. Guide sleeve; 1004. Sliding column; 1005. Second spring; 1006. Spiral impeller; 1007. Striking rod.

[0033] As shown in the figure, specific structures and devices are marked in the figure to clearly illustrate the structure of the embodiments of the present invention. However, this is only for illustrative purposes and is not intended to limit the present invention to this specific structure, device and environment. Those skilled in the art can adjust or modify these devices and environments according to specific needs. Detailed Implementation

[0034] The following is a detailed description of a layered oxygen-controlled dual-chamber high-efficiency fermentation device for organic fertilizer provided by the present invention, with reference to the accompanying drawings and specific embodiments. It should be noted that, to make the embodiments more detailed, the following embodiments are the best and preferred embodiments; those skilled in the art can also use other alternative methods to implement some known technologies; and the accompanying drawings are only for more specific description of the embodiments and are not intended to specifically limit the present invention.

[0035] It should be noted that the use of terms such as "an embodiment," "an embodiment," "an exemplary embodiment," and "some embodiments" in the specification indicates that the described embodiment may include a specific feature, structure, or characteristic, but not every embodiment necessarily includes that specific feature, structure, or characteristic. Furthermore, when a specific feature, structure, or characteristic is described in connection with an embodiment, implementing such a feature, structure, or characteristic in conjunction with other embodiments (whether explicitly described or not) should be within the knowledge of those skilled in the art.

[0036] Generally, terms can be understood at least partly from their use in context. For example, depending at least partly on the context, the term "one or more" as used herein can be used to describe any feature, structure, or characteristic in a singular sense, or a combination of features, structures, or characteristics in a plural sense. Additionally, the term "based on" can be understood not necessarily to convey an exclusive set of factors, but rather, alternatively, depending at least partly on the context, to allow for the presence of other factors that are not necessarily explicitly described.

[0037] It is understood that the meanings of “on”, “above”, and “above” in this invention should be interpreted in the broadest manner, such that “on” means not only “directly on” something, but also includes the meaning of being “on” something with an intervening feature or layer, and that “above” or “above” means not only “on” something, but also includes the meaning of being “on” something without an intervening feature or layer.

[0038] Furthermore, spatially related terms such as “below,” “under,” “lower,” “above,” and “upper” are used herein for convenience to describe the relationship of one element or feature to one or more other elements or features, as illustrated in the accompanying drawings. Spatially related terms are intended to cover different orientations in the use or operation of the device other than those depicted in the accompanying drawings. The device may be oriented in other ways, and the spatially related descriptive terms used herein can be interpreted similarly.

[0039] like Figures 1 to 3As shown, an embodiment of the present invention provides a layered oxygen-controlled dual-chamber high-efficiency fermentation device for organic fertilizer, including a support frame 1. A fermentation tank 2 is fixedly connected to the top of the support frame 1. The fermentation tank 2 is provided with an upper chamber 5 and a lower chamber 6. The upper chamber 5 is an organic fertilizer stirring and aeration fermentation chamber, which promotes the proliferation of thermophilic aerobic microorganisms and accelerates the degradation of organic matter by stirring and supplying sufficient air. The lower chamber 6 is an oxygen-controlled area, in which the oxygen concentration decreases gradually from top to bottom, and the organic fertilizer is kept in a static state to meet the process requirements of the material fermentation and aging stage. A feed inlet 3 is fixedly connected to the top of the upper chamber 5, and a discharge outlet 4 is fixedly connected to the bottom of the lower chamber 6. An electric control valve 7 is fixedly connected between the upper chamber 5 and the lower chamber 6. The electric control valve 7 is used to control the connection or isolation between the upper chamber 5 and the lower chamber 6. A groove 61 is opened on the inner wall of the lower chamber 6, and a loosening mechanism 10 is provided inside the lower chamber 6. A reduction motor 8 is fixedly connected to the top of the support frame 1, and a stirring and feeding mechanism 9 is provided at the output end of the reduction motor 8.

[0040] In this embodiment, as Figure 4 , Figure 5 and Figure 9 As shown, the mixing and feeding mechanism 9 includes a mixing rod 901, which is fixedly connected to the output end of the reduction motor 8. A mixing blade is fixedly connected to the outer wall of the mixing rod 901. The mixing blade stirs the organic fertilizer in the upper chamber 5, thereby increasing the contact area between the organic fertilizer and the gas in the chamber. A cavity 909 is opened in the inner wall of the mixing rod 901. A first bevel gear 902 is fixedly connected to the bottom inner wall of the cavity 909. A second bevel gear 903 is slidably connected to the inner wall of the cavity 909. A fixed shaft 904 is fixedly connected to the inner wall of the second bevel gear 903. The end of the fixed shaft 904 passes through the bottom wall of the cavity 909 and is fixedly connected to a spiral rod 906 provided below the mixing rod 901. The spiral rod 906 can slide axially with the fixed shaft 904 and rotate synchronously with the mixing rod 901 when the second bevel gear 903 meshes with the first bevel gear 902.

[0041] A first spring 905 is fixedly connected to the top of the second bevel gear 903. A rotating block 910 is fixedly connected to the end of the first spring 905 away from the second bevel gear 903. The rotating block 910 is rotatably connected to the inner wall of the stirring rod 901 so that the upper end of the first spring 905 can rotate freely relative to the stirring rod 901 when it rotates with the second bevel gear 903. The first spring 905 is used to press the second bevel gear 903 downward, so that the second bevel gear 903 continues to maintain the tendency to move closer to the first bevel gear 902.

[0042] The bottom end of the spiral rod 906 is internally connected to a first ball bearing 908, and a connecting block 907 is fixedly connected to the outer wall of the spiral rod 906 near the first ball bearing 908.

[0043] like Figure 4 and Figure 5 As shown, the inner wall of the electric control valve 7 is rotatably connected to a valve plate 701. The valve plate 701 can reciprocate between the open position and the closed position, thereby realizing the opening and closing of the passage between the upper chamber 5 and the lower chamber 6. A sliding groove 702 is provided on the outer surface of the valve plate 701.

[0044] A stop 703 is fixedly connected to the outer wall of the valve plate 701 near the sliding groove 702. When the valve plate 701 is in the closed state, the stop 703 abuts against the connecting block 907 to restrict the rotation of the screw rod 906. When the valve plate 701 is opened, the stop 703 and the connecting block 907 separate from each other, thereby releasing the rotation constraint on the screw rod 906.

[0045] Specifically, when the valve plate 701 rotates from the open to the closed position, the sliding groove 702 on the outer surface of the valve plate 701 gradually comes into contact with the first ball 908 at the bottom of the screw rod 906, and exerts an upward squeezing force on the screw rod 906. The first ball 908 rolls along the sliding groove 702 and pushes the screw rod 906 upward. The screw rod 906 drives the second bevel gear 903 to slide upward in the cavity 909 through the fixed shaft 904, overcoming the pressure of the first spring 905, so that the second bevel gear 903 disengages from the first bevel gear 902. At this time, the screw rod 906 stops rotating. At the same time, the stop block 703 on the valve plate 701 flips with the valve plate 701 and squeezes the side of the connecting block 907, thereby limiting the screw rod 906 in the circumferential direction, ensuring that the screw rod 906 will not rotate due to material resistance after it stops rotating.

[0046] like Figure 7 and Figure 8 As shown, when the valve plate 701 rotates from the closed to the open position, the stop block 703 rotates away from the connecting block 907 along with the valve plate 701, releasing the circumferential limit on the spiral rod 906; at the same time, the first ball bearing 908 loses its upward support force, and the first spring 905 pushes the second bevel gear 903 downward through the rotating block 910. The second bevel gear 903 slides downward along the inner wall of the cavity 909 and meshes with the first bevel gear 902. At the same time, the fixed shaft 904 and the spiral rod 906 move downward synchronously, and the end part of the spiral rod 906 extends into the interior of the electric control valve 7. At this time, the reduction motor 8 drives the stirring rod 901 to rotate. The stirring rod 901 transmits the rotation to the fixed shaft 904 and the spiral rod 906 through the meshing of the first bevel gear 902 and the second bevel gear 903, so that the spiral rod 906 forces the material that has been stirred and fermented in the upper chamber 5 to be transported to the lower chamber 6.

[0047] like Figure 6As shown, the loosening mechanism 10 includes a connecting frame 1001, a second ball bearing 1002 is rotatably connected to the inner wall of the connecting frame 1001, the second ball bearing 1002 is rolled in the inner wall of the groove 61, a guide sleeve 1003 is fixedly connected to the outer wall of the connecting frame 1001, and a spiral impeller 1006 is provided at the bottom of the connecting frame 1001.

[0048] A sliding column 1004 is fixedly connected to the outer wall of the spiral impeller 1006. One end of the sliding column 1004 away from the spiral impeller 1006 passes through the guide sleeve 1003 and is fixedly connected to a second spring 1005. The end of the second spring 1005 is fixedly connected to the inner wall of the guide sleeve 1003, so that when the spiral impeller 1006 is impacted by falling material, it can float and move along the guiding direction of the guide sleeve 1003, and reset through the second spring 1005, so that the organic fertilizer falling onto the surface of the spiral impeller 1006 can be detached.

[0049] A striking rod 1007 is fixedly connected to the outer surface of the spiral impeller 1006. The striking rod 1007 is used to break up the falling organic fertilizer. When the fermentation material falls from the upper chamber 5 into the lower chamber 6 through the electric control valve 7, the falling material impacts the blade surface of the spiral impeller 1006, driving the spiral impeller 1006 and the connecting frame 1001 to rotate circumferentially. During the rotation, the striking rod 1007 strikes and cuts the falling organic fertilizer, breaking up the clumps of material. At the same time, the centrifugal force generated by the rotation of the spiral impeller 1006 throws the broken material radially out, so that the material is evenly distributed inside the lower chamber 6, avoiding the material from accumulating in the central area of ​​the lower chamber 6. This ensures that the material forms a flat and loose pile in the lower chamber 6, which is beneficial to the uniformity and aeration of the subsequent static stratified fermentation.

[0050] This invention encompasses any substitutions, modifications, equivalent methods, and solutions made within the spirit and scope of this invention. To provide the public with a thorough understanding of this invention, specific details are described in detail in the following preferred embodiments; however, those skilled in the art will fully understand the invention even without these details. Furthermore, to avoid unnecessary misunderstanding of the essence of this invention, well-known methods, processes, procedures, components, and circuits are not described in detail.

[0051] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A layered oxygen-controlled dual-chamber high-efficiency fermentation device for organic fertilizer, comprising a support frame (1), a fermentation tank (2) fixedly connected to the top of the support frame (1), an upper chamber (5) and a lower chamber (6) being provided inside the fermentation tank (2), a feed inlet (3) being fixedly connected to the top of the upper chamber (5), a discharge outlet (4) being fixedly connected to the bottom of the lower chamber (6), an electric control valve (7) being fixedly connected between the upper chamber (5) and the lower chamber (6), the electric control valve (7) being used to control the connection or disconnection between the upper chamber (5) and the lower chamber (6), a groove (61) being provided on the inner wall of the lower chamber (6), and a loosening mechanism (10) being provided inside the lower chamber (6), characterized in that, The top of the support frame (1) is fixedly connected to a reduction motor (8), and the output end of the reduction motor (8) is provided with a stirring and feeding mechanism (9). The mixing and feeding mechanism (9) includes: A stirring rod (901) is fixedly connected to the output end of a reduction motor (8). A cavity (909) is opened in the inner wall of the stirring rod (901). A first bevel gear (902) is fixedly connected to the bottom inner wall of the cavity (909). A second bevel gear (903) is slidably connected to the inner wall of the cavity (909). A fixed shaft (904) is fixedly connected to the inner wall of the second bevel gear (903). The end of the fixed shaft (904) passes through the cavity (909) and is fixedly connected to a spiral rod (906).

2. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 1, characterized in that, A first spring (905) is fixedly connected to the top of the second bevel gear (903). A rotating block (910) is fixedly connected to the end of the first spring (905) away from the second bevel gear (903). The rotating block (910) is rotatably connected to the inner wall of the stirring rod (901). The first spring (905) is used to press the second bevel gear (903) downward.

3. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 2, characterized in that, The bottom end of the spiral rod (906) is internally connected to a first ball (908), and a connecting block (907) is fixedly connected to the outer wall of the spiral rod (906) near the first ball (908).

4. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 1, characterized in that, The loosening mechanism (10) includes a connecting frame (1001), the inner wall of which is rotatably connected to a second ball (1002), the second ball (1002) being rolled in the inner wall of the groove (61).

5. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 4, characterized in that, The outer wall of the connecting frame (1001) is fixedly connected to a guide sleeve (1003), and a spiral impeller (1006) is provided at the bottom of the connecting frame (1001).

6. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 5, characterized in that, A sliding column (1004) is fixedly connected to the outer wall of the spiral impeller (1006). One end of the sliding column (1004) away from the spiral impeller (1006) passes through the guide sleeve (1003) and is fixedly connected to a second spring (1005). The end of the second spring (1005) is fixedly connected to the inner wall of the guide sleeve (1003).

7. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 6, characterized in that, A striking rod (1007) is fixedly connected to the outer surface of the spiral impeller (1006), and the striking rod (1007) is used to break up the falling organic fertilizer.

8. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 2, characterized in that, The inner wall of the electrically controlled valve (7) is rotatably connected to a valve plate (701), and a sliding groove (702) is provided on the outer surface of the valve plate (701).

9. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 8, characterized in that, A stop (703) is fixedly connected to the outer wall of the valve plate (701) near the sliding groove (702). The stop (703) is used to restrict the rotation of the screw rod (906) when the valve plate (701) is closed, and to release the restriction on the rotation of the screw rod (906) when the valve plate (701) is opened.

10. The high-efficiency fermentation device for layered oxygen-controlled dual-chamber organic fertilizer according to claim 9, characterized in that, When the valve plate (701) is opened, the first spring (905) pushes the second bevel gear (903) to mesh with the first bevel gear (902), so that the screw rod (906) and the stirring rod (901) rotate synchronously.

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