A kind of oxygen supply equipment for agricultural microbial fertilizer fermentation

Abstract

The present invention relates to the technical field of oxygen supply for fertilizer fermentation, and discloses an oxygen supply device for agricultural microbial fertilizer fermentation, including an oxygen supply component connected to an air compressor and a conveying component for conveying gas on the oxygen supply component to a microbial fertilizer fermentation area; the conveying component includes a collecting frame and a plurality of vent pipes installed in a circular array around the collecting frame. The oxygen supply device for agricultural microbial fertilizer fermentation can perform heat exchange treatment on the cold air entering the vent pipe through the arrangement of a heat exchange component, so that the high temperature in this area of ​​the vent pipe is heat exchanged with the cold air to form a preliminary cooling operation, and then the heat exchanged gas is collected through the collecting frame, and finally dispersed through a plurality of vent holes on the outer surface of the dispersion pipe to form a stable oxygen supply operation, which not only has a good cooling function, but also can fully utilize the high temperature in the fermentation area, thereby improving the balance of oxygen supply.

Description

Technical Field

[0001] The invention relates to the technical field of oxygen supply for fertilizer fermentation, in particular to oxygen supply equipment for agricultural microbial fertilizer fermentation. Background Art

[0002] Agricultural microbial fertilizer refers to a type of biological fertilizer that uses microorganisms and their metabolites to increase crop yield and quality. They include bio-organic fertilizers, biological agents and biological preparations, etc. Microbial fertilizers generally require oxygen during the fermentation process to improve their fermentation effect.

[0003] After searching, the Chinese invention patent with publication number CN115745680B discloses an oxygen supply system and device for agricultural microbial fertilizer fermentation, including a sterilization system, a heating system and a control system; the control system is used to detect the temperature, humidity and oxygen content information in the fermentation tank, and control the opening and closing of the sterilization system and the heating system; the heating system includes a heating box, a radiation plate is fixedly installed in the heating box, and a plurality of hollow Mobius rings are inlaid on the radiation plate, and the plurality of Mobius rings are arranged in an array, and a pipeline is connected between the vertically adjacent Mobius rings, and the pipeline is located between the radiation plate and the heating box, and the pipeline is connected to a pump assembly, and the pump assembly is connected to a heat source. The present invention has a simple structure, and can process the air so that the air entering the fermentation tank meets the fermentation conditions and reduces the impact on the fermentation.

[0004] In the related art, when air is transported into an agricultural microbial fertilizer fermentation tank for oxygen supply, in order to prevent the flowing air from lowering the temperature inside the fermentation tank, causing the fertilizer fermentation temperature to drop and affecting its fermentation effect, the existing fermentation oxygen supply equipment generally needs to heat or cool the injected air when supplying oxygen; when the temperature inside the fermentation tank is too high and oxygen supply is required, the existing oxygen supply methods mostly use the method of injecting cold air to perform simultaneous oxygen supply and cooling. Since the temperature difference between the newly injected cold air and the inside of the fermentation tank is large, the cold air is easily caused to die of microorganisms when injected into the fermentation tank. There is a lack of the function of recycling the waste heat in the fermentation area, so that an additional heater or cooler is required to regulate the injected gas, which increases the oxygen supply cost of fertilizer fermentation. Summary of the invention

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the present invention provides an oxygen supply device for agricultural microbial fertilizer fermentation. Through the arrangement of a heat exchange component, the cold air entering the ventilation pipe can be heat exchanged, so that the high temperature in this area of ​​the ventilation pipe is heat exchanged with the cold air, forming a preliminary cooling operation, and then the gas after the heat exchange is collected through a collecting frame, and finally dispersed through a plurality of ventilation holes on the outer surface of the dispersion pipe to form a stable oxygen supply operation. It not only has a good cooling function, but also can fully utilize the high temperature of the fermentation area, thereby improving the stability of the oxygen supply, and solving the problem that when the oxygen supply equipment in the prior art supplies oxygen to the fertilizer fermentation area with a higher temperature, the temperature difference between the injected gas and the fertilizer fermentation area is large, which easily causes the death of microorganisms.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: an oxygen supply device for agricultural microbial fertilizer fermentation, comprising an oxygen supply component connected to an air compressor and a delivery component for delivering gas on the oxygen supply component to a microbial fertilizer fermentation area;

[0009] The conveying assembly includes a collecting frame and a plurality of ventilation pipes installed in a circular array around the collecting frame, the bottom of the collecting frame is fixedly connected with a dispersion pipe, and the outer surfaces of the plurality of ventilation pipes and the dispersion pipes are provided with a plurality of ventilation holes;

[0010] A heat exchange component is arranged inside the ventilation pipe, and an air guide pipe, an air release pipe and an air injection pipe are respectively installed on the ventilation pipe. The heat exchange component is connected with the air guide pipe and the air injection pipe. The oxygen supply assembly is used to inject gas into the interior of the air injection pipe, and a pressure valve is installed on the air release pipe.

[0011] Preferably, the heat exchange component comprises two conversion frames fixed inside the ventilation pipe, a flow gap is provided between the two conversion frames and the inner wall of the ventilation pipe, and a spiral heat exchange pipe is fixedly connected between the two conversion frames;

[0012] One end of the air guide tube is fixedly communicated with the interior of one of the conversion frames, and one end of the air injection tube is fixedly communicated with the interior of the other conversion frame.

[0013] Preferably, a conversion assembly is installed inside each of the plurality of ventilation pipes;

[0014] The conversion assembly includes a plurality of drainage tubes connected to the interior of the collecting frame, one end of each of the drainage tubes is connected to the interior of the ventilation tube, and a blocking block for blocking one end of the drainage tube is arranged inside the ventilation tube.

[0015] Preferably, the top end of the ventilation pipe is slidably connected to a driving rod, and the bottom end of the driving rod extends to the inside of the ventilation pipe, the blocking block is fixedly connected to the outer surface of the driving rod, and the ventilation pipe is provided with a driving member for driving the driving rod up and down.

[0016] Preferably, the driving member includes a temperature sensing tube fixed to the outer surface of the top end of the ventilation pipe, a thermal expansion fluid is arranged inside the temperature sensing tube, and a control rod driven by the thermal expansion of the thermal expansion fluid is arranged on the temperature sensing tube, and the top end of the control rod is fixedly connected to the top end of the driving rod through a connecting frame.

[0017] Preferably, the oxygen supply assembly includes an input pipe connected to the air compressor, one end of the input pipe is fixedly connected to a hot air pipe and a cold air pipe, and a reversing valve is installed between the input pipe, the hot air pipe and the cold air pipe;

[0018] One end of the cold air pipe is fixedly connected to an annular pipe, and the air injection pipes on the plurality of ventilation pipes are fixedly connected to the inside of the annular pipe;

[0019] A heating box is installed on the hot air pipe, one end of the hot air pipe is fixedly connected with the bottom end of the dispersion pipe, and a one-way valve is installed on the hot air pipe.

[0020] Preferably, the vent pipe is fixedly connected to the bottom end of the vent pipe, and a conical opening is provided at the inner bottom of the vent pipe, and a conical piston block for blocking the conical opening is fixedly connected to the bottom end of the drive rod.

[0021] Preferably, the pressure valve includes a sleeve fixedly connected to the vent pipe, an annular block is fixedly connected to the interior of the sleeve, a blocking block for sealing the opening inside the annular block is arranged inside the sleeve, an extrusion piece for extruding the blocking block upward is fixedly connected to the interior of the sleeve through a bracket, and the elastic coefficient of the extrusion piece is smaller than the driving force of the gas inside the ventilation pipe to drive the blocking block downward.

[0022] (III) Beneficial effects

[0023] Compared with the prior art, the present invention provides an oxygen supply device for agricultural microbial fertilizer fermentation, which has the following beneficial effects:

[0024] 1. The present invention can perform heat exchange treatment on the cold air entering the ventilation pipe through the arrangement of the heat exchange element, so that the high temperature in this area of ​​the ventilation pipe is heat exchanged with the cold air to form a preliminary cooling work, and then the gas after heat exchange is collected through the collecting frame, and finally dispersed through a plurality of ventilation holes on the outer surface of the dispersion pipe to form a stable oxygen supply work, which not only has a good cooling function, but also can fully utilize the high temperature of the fermentation area, improve the stability of oxygen supply, and solve the problem that when the oxygen supply equipment in the prior art supplies oxygen to the fertilizer fermentation area with a higher temperature, the temperature difference between the injected gas and the fertilizer fermentation area is large, which easily causes the death of microorganisms.

[0025] 2. When the driving rod of the present invention moves downward, it can not only drive the blocking block to move downward to connect the drainage pipe with the inside of the ventilation pipe, but also synchronously drive the conical piston block to move downward, so that the conical piston block seals and blocks the conical port, preventing the hot air injected into the ventilation pipe by the drainage pipe from being lost through the vent pipe, thereby ensuring that the hot air in the ventilation pipe can flow to the fertilizer fermentation area through a plurality of ventilation holes, thereby ensuring the smoothness and stability of the heated oxygen supply.

[0026] 3. When the present invention guides the cold air inside the collecting frame through the dispersion pipe, the air pressure inside the fermentation tank will increase. At this time, the hot air inside the fermentation tank can enter the interior of the ventilation pipe through a plurality of ventilation holes on the outer surface of the ventilation pipe, and finally be guided out through the vent pipe to form a pressure balance. The elastic force of the extrusion piece itself can squeeze the blocking block upward so that the blocking block seals and blocks the vent pipe, thereby ensuring the sealing of the microbial fertilizer fermentation inside the fermentation tank. It has a good automatic pressure relief function to ensure the stability of the microbial fertilizer fermentation inside the fermentation tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 This is a schematic diagram of the structure of the oxygen supply equipment for agricultural microbial fertilizer fermentation of the present invention;

[0028] Figure 2 For the present invention Figure 1 Bottom view of the structure of the oxygen supply equipment for fermentation of microbial fertilizer in China Agriculture;

[0029] Figure 3 For the present invention Figure 1 A schematic cross-sectional view of an oxygen supply device for fermentation of microbial fertilizers in China;

[0030] Figure 4 For the present invention Figure 1 Schematic diagram of the connection between the dispersion pipe and the oxygen supply assembly;

[0031] Figure 5 For the present invention Figure 3Schematic diagram of the structure of the central ventilation tube;

[0032] Figure 6 For the present invention Figure 5 A partial enlarged view of the middle A;

[0033] Figure 7 For the present invention Figure 3 Schematic diagram of the structure of the medium pressure valve;

[0034] Figure 8 For the present invention Figure 3 Schematic diagram of cold and hot air injection into the center snorkel.

[0035] In the figure: 1, oxygen supply assembly; 11, input pipe; 12, hot air pipe; 13, cold air pipe; 14, reversing valve; 15, annular pipe; 16, heating box; 17, one-way valve;

[0036] 2. Conveying assembly; 21. Collecting frame; 22. Ventilation pipe; 23. Dispersion pipe; 24. Ventilation hole; 25. Air guide pipe; 26. Air release pipe; 27. Air injection pipe;

[0037] 28. heat exchange element; 281. conversion frame; 282. flow gap; 283. heat exchange tube;

[0038] 29. pressure valve; 291. sleeve; 292. annular block; 293. blocking block; 294. extrusion piece;

[0039] 3. Conversion assembly; 31. Drainage tube; 32. Blocking block; 33. Driving rod; 34. Temperature sensing tube; 35. Connecting frame; 36. Conical mouth; 37. Conical piston block. DETAILED DESCRIPTION

[0040] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0041] Embodiment 1:

[0042] Refer to the attached Figure 1-8 , an oxygen supply device for agricultural microbial fertilizer fermentation, comprising an oxygen supply component 1 connected to an air compressor and a delivery component 2 for delivering gas on the oxygen supply component 1 to a microbial fertilizer fermentation area;

[0043] The oxygen supply component 1 is installed under the fermentation tank for microbial fertilizer fermentation, and its delivery component 2 is arranged inside the fermentation tank to form oxygen supply and delivery work;

[0044] The conveying assembly 2 includes a collecting frame 21 and a plurality of vent pipes 22 installed in a circular array around the collecting frame 21. A dispersion pipe 23 is fixedly connected to the bottom of the collecting frame 21, and a plurality of vent pipes 22 and the dispersion pipe 23 are provided with a plurality of vent holes 24 on their outer surfaces.

[0045] By installing a plurality of ventilation pipes 22 in a circular array on the outer surface of the collecting frame 21, the efficiency and balance of the fermentation oxygen supply can be improved. By opening a plurality of ventilation holes 24 on the outer surfaces of the plurality of ventilation pipes 22 and the dispersion pipes 23, the dispersion of the oxygen supply can be improved, thereby increasing the microbial fermentation effect.

[0046] A heat exchanger 28 is provided inside the ventilation pipe 22. An air guide pipe 25, an air release pipe 26 and an air injection pipe 27 are respectively installed on the ventilation pipe 22. The heat exchanger 28 is connected with the air guide pipe 25 and the air injection pipe 27. The oxygen supply assembly 1 is used to inject gas into the air injection pipe 27. A pressure valve 29 is installed on the air release pipe 26.

[0047] Cold air is injected into the air injection pipe 27 through the oxygen supply component 1, so that the gas inside the air injection pipe 27 enters the interior of the ventilation pipe 22. Through the setting of the heat exchanger 28, the cold air entering the ventilation pipe 22 can be heat exchanged, so that the high temperature in this area of ​​the ventilation pipe 22 is heat exchanged with the cold air, forming a preliminary cooling operation, and then the heat-exchanged gas is collected through the collecting frame 21, and finally dispersed through a plurality of ventilation holes 24 on the outer surface of the dispersion pipe 23, forming a stable oxygen supply operation, which not only has a good cooling function, but also can fully utilize the high temperature of the fermentation area, improve the stability of the oxygen supply, and solve the problem that when the oxygen supply equipment in the prior art supplies oxygen to the fertilizer fermentation area with a higher temperature, the temperature difference between the injected gas and the fertilizer fermentation area is large, which easily causes the death of microorganisms.

[0048] See attached Figure 3 , Figure 5 and Figure 6 The heat exchange member 28 includes two conversion frames 281 fixed inside the ventilation pipe 22, and a flow gap 282 is provided between the two conversion frames 281 and the inner wall of the ventilation pipe 22, and a spiral heat exchange pipe 283 is fixedly connected between the two conversion frames 281;

[0049] The heat exchange pipe 283 is used to perform heat exchange between the gas converted by the two conversion frames 281 and the temperature of the fermentation area, so that the gas rises slowly, which not only reduces the temperature at the position of the ventilation pipe 22, but also can simultaneously heat up the injected cold air to prevent the large temperature difference between the newly injected gas and the fermentation area, thereby causing the death of microorganisms and affecting the fermentation effect of the microbial fertilizer;

[0050] A flow gap 282 is provided between the two conversion frames 281 and the inner wall of the ventilation pipe 22, so that the hot air in the fermentation area can enter the ventilation pipe 22 through the ventilation holes 24 on the outer surface of the ventilation pipe 22, and finally flow out through the exhaust pipe 26 below;

[0051] When the injected cold air flows inside the heat exchange tube 283, the cold air can exchange heat with the hot air flowing out of the fertilizer fermentation area, so that the injected cold air gradually heats up, and the increased temperature is slightly lower than the original temperature of the fermentation area, so that the temperature of the fermentation area is fully utilized, thereby forming a stable oxygen supply operation, solving the problem that when the oxygen supply equipment in the prior art supplies oxygen to the fertilizer fermentation area with a higher temperature, the temperature difference between the injected gas and the fertilizer fermentation area is large, which easily causes the death of microorganisms;

[0052] One end of the air guide tube 25 is fixedly connected to the interior of one of the conversion frames 281, and one end of the air injection tube 27 is fixedly connected to the interior of the other conversion frame 281;

[0053] One end of the air guide pipe 25 is fixedly connected to the interior of one of the conversion frames 281, and one end of the air injection pipe 27 is fixedly connected to the interior of the other conversion frame 281, so that when the air injection pipe 27 injects low-temperature cold air into the interior of one of the conversion frames 281, the cold air can flow to the other conversion frame 281 through the spiral heat exchange tube 283, and finally the gas is discharged to the collecting frame 21 through the air guide pipe 25, and cooperated with the dispersion pipe 23 to disperse the gas into the fertilizer fermentation area, thereby forming an oxygen supply operation.

[0054] Refer to the attached Figure 3 , Figure 5 , Figure 6 and Figure 8 , a conversion assembly 3 is installed inside each of the plurality of vent pipes 22;

[0055] The conversion component 3 is used to control the flow mode of hot air or cold air, thereby facilitating heating oxygen supply or cooling oxygen supply, thereby improving the functionality and practicality of the oxygen supply device;

[0056] The conversion assembly 3 includes a plurality of drainage tubes 31 connected to the interior of the collecting frame 21, one end of each of the drainage tubes 31 is connected to the interior of the ventilation tube 22, and a blocking block 32 for blocking one end of the drainage tube 31 is provided inside the ventilation tube 22;

[0057] The collecting frame 21 is connected to the interior of several ventilation pipes 22 through several drainage pipes 31, so that the hot air inside the collecting frame 21 can directly enter the interior of the ventilation pipes 22 through the drainage pipes 31, and flow out through the ventilation holes 24 on the outer surfaces of the ventilation pipes 22, forming a large-scale heated oxygen supply operation.

[0058] See attached Figure 5 and Figure 6 The top of the vent pipe 22 is slidably connected with a driving rod 33, and the bottom end of the driving rod 33 extends into the interior of the vent pipe 22, the blocking block 32 is fixedly connected to the outer surface of the driving rod 33, and the vent pipe 22 is provided with a driving member for driving the driving rod 33 up and down;

[0059] The driving member is used to drive the driving rod 33 up and down, and the upward movement of the driving rod 33 can seal and block the drainage tube 31, so that the gas inside the collecting frame 21 will not enter the inside of the ventilation tube 22, preventing the injected gas from being directly leaked through the venting tube 26;

[0060] By driving the rod 33 downward, the blockage of the drainage tube 31 can be removed, so that the hot air inside the collecting frame 21 can directly enter the interior of the ventilation tube 22 and flow out through the ventilation holes 24 on the outer surface of the ventilation tube 22, forming a large-scale heated oxygen supply operation.

[0061] See attached Figure 5 , Figure 6 and Figure 8 The driving member includes a temperature sensing tube 34 fixed to the outer surface of the top end of the vent pipe 22, a thermal expansion fluid is arranged inside the temperature sensing tube 34, and a control rod driven by the thermal expansion of the thermal expansion fluid is arranged on the temperature sensing tube 34, and the top end of the control rod is fixedly connected to the top end of the driving rod 33 through a connecting frame 35;

[0062] The temperature of the fertilizer fermentation area is detected by the temperature sensing tube 34. If the temperature of the fermentation area is too high, the control rod will be driven to move upward. Figure 8 As shown in the left figure, the upward movement of the control rod will drive the driving rod 33 to move upward, thereby driving the blocking block 32 to move upward. On the contrary, when the temperature of the fermentation area is too low, the control rod will move downward, causing the blocking block 32 to move downward.

[0063] By installing an independent temperature sensing tube 34 on each ventilation pipe 22, the independently arranged temperature sensing tube 34 can detect the temperature of different areas. When the temperatures of different areas are inconsistent, the corresponding blocking block 32 can independently control the drainage tubes 31 at different positions, thereby forming a heated oxygen supply operation in different areas.

[0064] The temperature sensing tube 34 is filled with a thermal expansion liquid. Specifically, the thermal expansion liquid is a liquid medium that is susceptible to expansion and contraction due to temperature changes, such as kerosene, dichloromethane, methanol, etc.

[0065] Refer to the attached Figure 4 The oxygen supply assembly 1 includes an input pipe 11 connected to the air compressor, one end of the input pipe 11 is fixedly connected to a hot air pipe 12 and a cold air pipe 13, and a reversing valve 14 is installed between the input pipe 11, the hot air pipe 12 and the cold air pipe 13;

[0066] The input pipe 11 is connected to an external air compressor or fan to inject gas into the hot air pipe 12 or the cold air pipe 13 to form an oxygen supply operation. The reversing valve 14 adopts a valve with an output port for reversing in the prior art, thereby facilitating the conversion of heating or cooling oxygen supply;

[0067] One end of the cold air pipe 13 is fixedly connected to the annular pipe 15, and the air injection pipes 27 on the ventilation pipes 22 are fixedly connected to the inside of the annular pipe 15;

[0068] One end of the cold air pipe 13 is fixedly connected to the annular pipe 15, so that the cold air inside the annular pipe 15 is discharged to the heat exchanger 28 in the ventilation pipes 22 through the plurality of air injection pipes 27, and heat is exchanged through the heat exchanger 28, so that the heat-exchanged gas is dispersed and discharged through the collecting frame 21 and the dispersion pipe 23, thereby forming an oxygen supply operation;

[0069] A heating box 16 is installed on the hot air pipe 12, and one end of the hot air pipe 12 is fixedly connected to the bottom end of the dispersion pipe 23, and a one-way valve 17 is installed on the hot air pipe 12;

[0070] The heating box 16 adopts a heating mechanism used in the prior art for heating gas, and is used to heat the gas inside the hot air pipe 12, so that the heated gas is directly discharged into the interior of the dispersion pipe 23, and is dispersed and guided out through the vents 24 on the outer surface of the dispersion pipe 23, and is discharged into the plurality of ventilation pipes 22 through the plurality of drainage pipes 31, and is dispersed and guided out through the vents 24 on the outer surface of the plurality of ventilation pipes 22, thereby forming a heated oxygen supply operation;

[0071] The one-way valve 17 is provided to perform one-way control on the hot air pipe 12 to prevent gas from being lost through the hot air pipe 12 when cooling oxygen supply is performed through the dispersion pipe 23, thereby ensuring the smoothness of cooling oxygen supply.

[0072] Embodiment 2: Based on embodiment 1, the difference is that;

[0073] Refer to the attached Figure 5 , Figure 6 and Figure 8The vent pipe 26 is fixedly connected to the bottom end of the vent pipe 22, and a conical opening 36 is provided at the inner bottom of the vent pipe 22. A conical piston block 37 for blocking the conical opening 36 is fixedly connected to the bottom end of the driving rod 33;

[0074] When the driving rod 33 moves downward, it can not only drive the blocking block 32 to move downward, so that the drainage pipe 31 is connected with the inside of the ventilation pipe 22, but also synchronously drive the conical piston block 37 to move downward, so that the conical piston block 37 seals and blocks the conical port 36, thereby preventing the hot air injected into the ventilation pipe 22 by the drainage pipe 31 from being lost through the vent pipe 26, thereby ensuring that the hot air in the ventilation pipe 22 can flow to the fertilizer fermentation area through the plurality of ventilation holes 24, thereby ensuring the smoothness and stability of the heated oxygen supply. For details, please refer to the attached Figure 8 The right side of the figure;

[0075] On the contrary, when the temperature of the fertilizer fermentation area is too high, the thermal expansion liquid in the temperature sensing tube 34 will expand, and then drive the driving rod 33 to move upward through the control rod and the connecting frame 35, so that the blocking block 32 blocks the drainage tube 31, and the conical piston block 37 loses the blockage of the venting tube 26, so that the hot air in the fermentation tank is vented. For details, please refer to the attached Figure 8 The left picture in .

[0076] Embodiment 3: Based on embodiment 1, the difference is that;

[0077] Refer to the attached Figure 7 The pressure valve 29 includes a sleeve 291 fixedly connected to the vent pipe 26, an annular block 292 is fixedly connected to the inside of the sleeve 291, a blocking block 293 for blocking the opening inside the annular block 292 is arranged inside the sleeve 291, an extrusion piece 294 for extruding the blocking block 293 upward is fixedly connected to the inside of the sleeve 291 through a bracket, and the elastic coefficient of the extrusion piece 294 is smaller than the driving force of the gas inside the vent pipe 22 to drive the blocking block 293 downward;

[0078] When the cold air inside the collecting frame 21 is led out through the dispersion pipe 23, the air pressure inside the fermentation tank will increase. At this time, the hot air inside the fermentation tank can enter the inside of the ventilation pipe 22 through the plurality of ventilation holes 24 on the outer surface of the ventilation pipe 22, and finally be led out through the exhaust pipe 26, forming a pressure balance work.

[0079] The sealing block 293 can be squeezed upward by the elastic force of the extrusion piece 294 itself, so that the sealing block 293 seals and blocks the vent pipe 26, thereby ensuring the sealing of the microbial fertilizer fermentation inside the fermentation tank. The extrusion piece 294 includes but is not limited to a spring, a metal spring, and an elastic material.

[0080] It should be noted that the term "comprises" or any other variation thereof is intended to cover non-exclusive inclusion, so that a process, method, article, or device that includes a series of elements includes not only those elements, but also includes other elements that are not explicitly listed, or also includes elements inherent to such process, method, article, or device. In the absence of further restrictions, an element defined by the sentence "comprises a ..." does not exclude the presence of other identical elements in the process, method, article, or device that includes the element.

[0081] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An oxygen supply device for agricultural microbial fertilizer fermentation, characterized in that: It comprises an oxygen supply component (1) connected to an air compressor and a delivery component (2) used for delivering gas on the oxygen supply component (1) to a microbial fertilizer fermentation area; The conveying assembly (2) comprises a collecting frame (21) and a plurality of ventilation pipes (22) installed in a circular array around the collecting frame (21); a dispersion pipe (23) is fixedly connected to the bottom of the collecting frame (21), and a plurality of ventilation holes (24) are provided on the outer surfaces of the plurality of ventilation pipes (22) and the dispersion pipe (23); A heat exchange component (28) is arranged inside the ventilation pipe (22); an air guide pipe (25), an air release pipe (26) and an air injection pipe (27) are respectively installed on the ventilation pipe (22); the heat exchange component (28) is connected with the air guide pipe (25) and the air injection pipe (27); the oxygen supply assembly (1) is used to inject gas into the interior of the air injection pipe (27); and a pressure valve (29) is installed on the air release pipe (26).

2. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 1, characterized in that: The heat exchange component (28) comprises two conversion frames (281) fixed inside the ventilation pipe (22), a flow gap (282) is provided between the two conversion frames (281) and the inner wall of the ventilation pipe (22), and a spiral heat exchange pipe (283) is fixedly connected between the insides of the two conversion frames (281); One end of the air guide tube (25) is fixedly communicated with the interior of one of the conversion frames (281), and one end of the air injection tube (27) is fixedly communicated with the interior of the other conversion frame (281).

3. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 1, characterized in that: A conversion assembly (3) is installed inside each of the plurality of ventilation pipes (22); The conversion assembly (3) comprises a plurality of drainage tubes (31) connected to the interior of the collecting frame (21), one end of each of the plurality of drainage tubes (31) being connected to the interior of the ventilation tube (22), and a blocking block (32) for blocking one end of the drainage tube (31) is provided inside the ventilation tube (22).

4. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 3, characterized in that: The top end of the ventilation pipe (22) is slidably connected to a driving rod (33), and the bottom end of the driving rod (33) extends into the interior of the ventilation pipe (22). The blocking block (32) is fixedly connected to the outer surface of the driving rod (33). The ventilation pipe (22) is provided with a driving member for driving the driving rod (33) up and down.

5. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 4, characterized in that: The driving member comprises a temperature sensing tube (34) fixed to the outer surface of the top end of the ventilation tube (22), a thermal expansion fluid is arranged inside the temperature sensing tube (34), and a control rod driven by the thermal expansion of the thermal expansion fluid is arranged on the temperature sensing tube (34), and the top end of the control rod is fixedly connected to the top end of the driving rod (33) via a connecting frame (35).

6. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 3, characterized in that: The oxygen supply assembly (1) comprises an input pipe (11) connected to an air compressor, one end of the input pipe (11) is fixedly connected to a hot air pipe (12) and a cold air pipe (13), and a reversing valve (14) is installed between the input pipe (11), the hot air pipe (12) and the cold air pipe (13); One end of the cold air pipe (13) is fixedly connected to an annular pipe (15), and the air injection pipes (27) on the plurality of ventilation pipes (22) are fixedly connected to the inside of the annular pipe (15); A heating box (16) is installed on the hot air pipe (12), one end of the hot air pipe (12) is fixedly connected to the bottom end of the dispersion pipe (23), and a one-way valve (17) is installed on the hot air pipe (12).

7. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 1, characterized in that: The vent pipe (26) is fixedly connected to the bottom end of the vent pipe (22), and a conical opening (36) is provided at the inner bottom of the vent pipe (22). The bottom end of the drive rod (33) is fixedly connected to a conical piston block (37) for blocking the conical opening (36).

8. The oxygen supply equipment for agricultural microbial fertilizer fermentation according to claim 1, characterized in that: The pressure valve (29) comprises a sleeve (291) fixedly connected to the vent pipe (26); an annular block (292) is fixedly connected to the interior of the sleeve (291); a blocking block (293) for blocking an opening inside the annular block (292) is arranged inside the sleeve (291); an extrusion piece (294) for extruding the blocking block (293) upward is fixedly connected to the interior of the sleeve (291) via a bracket; the elastic coefficient of the extrusion piece (294) is smaller than the driving force of the gas inside the vent pipe (22) to drive the blocking block (293) downward.

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