Anaerobic microbial fermentation device

Abstract

The invention discloses an anaerobic microorganism fermentation device, and relates to the technical field of anaerobic microorganism fermentation, the anaerobic microorganism fermentation device comprises a fermentation assembly, the outer surface of the fermentation assembly is provided with a detection assembly; when the air purifier is used, aerobic gas is discharged through the gas outlet pipe and the diffusion pipe, the oxygen content is detected by the oxygen sensor, and when it is detected that the discharged aerobic gas is discharged, the gas enters the air purifier through the connecting pipe and the fixing pipe under the action of the flow guide plate to be subjected to air purification treatment. When oxygen-free gas is detected, the PLC can control the gas injection valve to be closed, a first electric one-way valve and a forward and reverse motor are started, the forward and reverse motor drives a rotating rod, a sealing plate and a sealing ring to rotate anticlockwise, a connecting pipe is blocked, and a flow guide plate guides the oxygen-free gas into a recycling pipe. The oxygen-free gas enters the fermentation tank again through the conveying pipe, the annular pipe, the gas inlet pipe and the gas injection pipe, waste of the oxygen-free gas is reduced, and the use efficiency is improved.

Description

Technical Field

[0001] The invention relates to the technical field of anaerobic microbial fermentation, in particular to an anaerobic microbial fermentation device. Background Art

[0002] Anaerobic microorganisms refer to a class of microorganisms that can only grow in an oxygen-free or low-oxygen environment. These microorganisms lack the oxygen required for respiration, so they cannot survive in an aerobic environment. There are many types of anaerobic microorganisms, the most common of which are bacteria, archaea, and a very small number of fungi. Under anaerobic conditions, anaerobic microorganisms decompose organic matter through fermentation, a special metabolic method, and convert it into relatively simple compounds, releasing energy in the process to meet their own energy needs for growth, reproduction, and survival. Fermentation products are not only the result of energy metabolism, but also serve as important intermediates in their metabolic process.

[0003] In the prior art, such as Chinese patent publication number: CN211445676U, an anaerobic microbial fermentation device is disclosed, including a box body, a slot, a fermentation box, a bottom plate, a connecting rod, an exhaust pipe and a wastewater tank. The box body is provided with an upper cover, and a sealing plug is provided on the upper cover. An air inlet pipe is inserted in the sealing plug, and an air outlet pipe is provided on the right side of the air inlet pipe. The latch is fixed with a plate. The fermentation box is placed inside the box body, the connecting rod is fixed at the upper end of the fermentation box, and the connecting rod is connected to the box body through a fixing member, the exhaust pipe is inserted in the body wall of the box body, and one end of the exhaust pipe is connected to a one-way valve, and the other end of the exhaust pipe is provided with an air inlet. The wastewater tank is provided below the bottom plate, and sewage pipes are provided on both sides of the wastewater tank. A fermentation box is provided in the device, and the fermentation box is connected to the box body through a fixing member, so that the fermented items can be better taken out from the fermentation.

[0004] In the prior art, during the use of the anaerobic microbial fermentation device, an air inlet pipe and an exhaust pipe are generally installed on the fermentation box, and oxygen-free gas is injected into the fermentation box through the pump body and the air inlet pipe, and the aerobic gas in the fermentation box is discharged through the exhaust pipe, so that an anaerobic environment is maintained in the fermentation box. However, when the aerobic gas is discharged, the injection amount of the oxygen-free gas in the fermentation box cannot be detected. When the oxygen-free gas is injected in excess, part of the oxygen-free gas will be discharged into the external air through the exhaust pipe, which will not only cause a waste of oxygen-free gas resources, but also have an adverse effect on the environment.

[0005] Therefore, we propose an anaerobic microbial fermentation device to solve the problems raised in the above background technology. Summary of the invention

[0006] The object of the present invention is to provide an anaerobic microbial fermentation device to solve the problem that in the anaerobic microbial fermentation device proposed in the above background technology, oxygen-free gas is injected into the fermentation box through a pump body and an air inlet pipe during use, and aerobic gas in the fermentation box is discharged through an exhaust pipe. When the oxygen-free gas is injected excessively, part of the oxygen-free gas will be discharged into the external air through the exhaust pipe, which will not only cause a waste of oxygen-free gas resources, but also have an adverse impact on the environment.

[0007] To achieve the above object, the present invention provides the following technical solution: an anaerobic microbial fermentation device, comprising a fermentation component, a detection component is arranged on the outer surface of the fermentation component, the fermentation component is used for anaerobic microbial fermentation, and the detection component is used to detect the change of the oxygen-free gas injection amount; The fermentation assembly comprises a fermentation tank, an outer surface of the fermentation tank near the top is fixedly connected to an air injection pipe, and an outer surface of the fermentation tank away from the air injection pipe is fixedly connected to an air outlet pipe; The detection component includes a mounting plate, a detection tube is arranged on the top of the mounting plate, one end of the detection tube is fixedly connected with a spherical cover, a mounting hole is opened on the outer surface of the detection tube near the top, an oxygen sensor is fixedly installed inside the mounting hole, a forward and reverse motor is installed on the outer surface of the spherical cover near the rear surface through an auxiliary plate, a rotating rod is fixedly installed on the output end of the forward and reverse motor, a sealing plate is fixedly installed on the outer surface of the rotating rod, and a sealing ring is fixedly connected to the outer surface of the sealing plate; oxygen-containing gas is discharged through the exhaust pipe and the diffusion pipe, and the oxygen sensor detects the oxygen content. When the discharged gas detected is oxygen-containing gas, the gas enters the air purifier through the connecting pipe and the fixed pipe under the action of the guide plate for air purification treatment. When oxygen-free gas is detected, the PLC controller controls the gas injection valve to close and starts the first electric one-way valve and the forward and reverse motor. The forward and reverse motor drives the rotating rod, the sealing plate and the sealing ring to rotate counterclockwise, the connecting pipe is blocked, and the guide plate guides the oxygen-free gas to the recovery pipe, and then enters the fermentation tank again through the conveying pipe, the annular pipe, the air inlet pipe and the air injection pipe, thereby reducing the waste of oxygen-free gas and improving the utilization efficiency. Under the action of the detection component, the real-time monitoring of the injection amount of oxygen-free gas is realized, and the discharged oxygen-containing gas can be purified and the accidentally discharged oxygen-free gas can be recycled and reused, thereby reducing the waste of oxygen-free gas and the impact on the environment.

[0008] Preferably, two guide plates are fixedly mounted on the outer surface of one side of the sealing plate, and the outer surfaces of the two guide plates are each provided with a plurality of guide grooves, and the outer surface of the sealing ring is in contact with the inner wall of the spherical cover.

[0009] Preferably, a rotation hole is provided on the outer surface of the spherical cover near the rear surface, a sealing sleeve is fixedly connected to the inner wall of the rotation hole, and a rotation groove is provided on the inner wall of the spherical cover.

[0010] Preferably, the inner wall of the rotating groove is fixedly connected with a rubber sleeve, the outer surface of the rotating rod is movably embedded in the sealing sleeve and the rubber sleeve, and the outer surface of the rotating rod is in contact with the inner walls of the sealing sleeve and the rubber sleeve.

[0011] Preferably, a diffusion tube is fixedly installed inside the detection tube, a connecting tube is fixedly connected to the outer surface of the spherical cover near the top, one end of the connecting tube is connected to a fixed tube via a flange, an air purifier is arranged on the outer surface of the fermentation tank, and one end of the fixed tube is connected to the input end of the air purifier via a flange.

[0012] Preferably, a recovery pipe is fixedly connected to the outer surface of the spherical cover near the bottom, the bottom end of the recovery pipe is connected to a delivery pipe via a flange, one end of the delivery pipe is fixedly connected to an annular pipe, and the outer surface of the annular pipe is fixedly connected to an air intake pipe.

[0013] Preferably, a first electric one-way valve is provided on the outer surface of the air inlet pipe, one end of the air inlet pipe is fixedly connected to the outer surface of the air injection pipe near the bottom, the outer surface of the fermenter is located inside the annular tube, and three mounting hoops are fixedly installed on the outer surface of the annular tube, and the three mounting hoops are all installed on the outer surface of the fermenter by screws; the gas enters the middle throat through the contraction section of the diffusion tube, and then enters the expansion section. As the cross-sectional area of ​​the pipeline increases, the gas flow rate decreases, so that the gas is more evenly distributed in the detection tube. This is conducive to providing a more stable gas flow for oxygen detection and improving the accuracy of detection. Through the diversion of the guide plate and the guide groove, it is convenient to better guide the gas to the connecting pipe or the recovery pipe, thereby playing a diversion role.

[0014] Preferably, the outer surface of the mounting plate is mounted on the outer surface of the fermentation tank near the outlet pipe by bolts, and a fixing bracket is fixedly mounted on the outer surface of the detection tube, and the fixing bracket is mounted on the top of the mounting plate by bolts, and the other end of the detection tube is connected to one end of the outlet pipe by a flange.

[0015] Preferably, an injection valve is provided on the outer surface of the injection pipe, a sealing gasket is fixedly connected to the top of the fermenter, a tank cover is provided on the top of the fermenter, the top of the sealing gasket contacts the top surface inside the tank cover, the tank cover and the fermenter are connected by bolts, a feed pipe is fixedly connected to the top of the tank cover, and a feed valve is provided on the outer surface of the feed pipe; the material to be processed is transported to the feed pipe through an external feeding device, and then enters the fermenter, after the feeding is completed, the feed valve is closed, the injection valve is opened, and then the oxygen-free gas is transported to the injection pipe through an external gas supply device, and then the oxygen-free gas is transported to the inside of the fermenter, and at the same time, the oxygen-containing gas in the fermenter is discharged to the detection component through the outlet pipe. When the inside of the fermenter is in an anaerobic environment, the injection of the oxygen-free gas is stopped, and the injection valve is closed. At this time, the material to be processed is located inside the fermenter and is in an anaerobic environment, and anaerobic microorganisms begin to ferment and decompose the material. By opening the second electric one-way valve, the exhaust gas pipe can be discharged into the exhaust gas treatment equipment for exhaust gas treatment, thereby reducing the impact of exhaust gas on air quality.

[0016] Preferably, the bottom end of the feed pipe is fixedly connected to the inside of the tank cover, a PLC controller is installed on the outer surface of the fermentation tank near the front surface by screws, a feed pipe is fixedly connected to the bottom of the fermentation tank, a feed valve is arranged on the outer surface of the feed pipe, and an exhaust pipe is fixedly connected to the top of the tank cover, and a second electric one-way valve is arranged on the outer surface of the exhaust pipe.

[0017] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention, when in use, oxygen gas is discharged through the air outlet pipe and the diffusion tube, and the oxygen sensor detects the oxygen content. When the detected discharged gas is oxygen gas, under the action of the guide plate, the gas enters the air purifier through the connecting pipe and the fixed pipe for air purification. When it is detected that it is oxygen-free gas, the PLC controller controls the air injection valve to close, and starts the first electric one-way valve and the forward and reverse motors, the forward and reverse motors drive the rotating rod, the sealing plate and the sealing ring to rotate counterclockwise, the connecting pipe is blocked, and the guide plate guides the oxygen-free gas to the recovery pipe, and enters the fermentation tank again through the conveying pipe, the annular pipe, the air inlet pipe and the air injection pipe, thereby reducing the waste of oxygen-free gas and improving the use efficiency. Under the action of the detection component, the real-time monitoring of the injection amount of oxygen-free gas is realized, and the discharged oxygen-free gas can be purified at the same time, and the oxygen-free gas discharged accidentally can be recycled and reused, thereby reducing the waste of oxygen-free gas and the impact on the environment.

[0018] 2. When the present invention is used, the gas enters the middle throat through the contraction section of the diffusion tube, and then enters the expansion section. As the cross-sectional area of ​​the pipeline increases, the gas flow rate decreases, so that the gas is more evenly distributed in the detection tube. It is beneficial to provide a more stable gas flow for oxygen detection and improve the accuracy of detection. Through the guidance of the guide plate and the guide groove, it is convenient to better guide the gas to the connecting pipe or the recovery pipe, thereby playing a guiding role.

[0019] 3. When the present invention is used, the material to be processed is transported to the feed pipe through an external feeding device, and then enters the fermenter. After the loading is completed, the feed valve is closed, the gas injection valve is opened, and then the oxygen-free gas is transported to the gas injection pipe through the external gas supply equipment, and then the oxygen-free gas is transported to the inside of the fermenter. At the same time, the aerobic gas in the fermenter is discharged to the detection component through the outlet pipe. When the inside of the fermenter is in an anaerobic environment, the injection of oxygen-free gas is stopped, and the gas injection valve is closed. At this time, the material to be processed is located inside the fermenter in an anaerobic environment, and anaerobic microorganisms begin to ferment and decompose the material. By opening the second electric one-way valve, the exhaust pipe can be discharged to the exhaust gas treatment equipment to treat the exhaust gas and reduce the impact of the exhaust gas on the air quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a front perspective view of an anaerobic microbial fermentation device of the present invention; Figure 2 It is a side perspective view of an anaerobic microbial fermentation device of the present invention; Figure 3 It is a structural cross-sectional expanded stereoscopic diagram of a fermentation component in an anaerobic microbial fermentation device of the present invention; Figure 4 It is a structural expansion stereogram of a detection component in an anaerobic microbial fermentation device of the present invention; Figure 5 It is a structural cross-sectional expanded stereoscopic diagram of a detection tube in an anaerobic microbial fermentation device of the present invention; Figure 6 It is a structural cross-sectional expanded stereoscopic diagram of a spherical cover in an anaerobic microbial fermentation device of the present invention; Figure 7 It is a perspective view of the spherical cover in an anaerobic microbial fermentation device according to another angle of the present invention; Figure 8 for Figure 7 The enlarged stereogram at A in the middle; Fig. 9 for Figure 7 Enlarged stereogram of point B in the middle.

[0021] In the figure: 1. Fermentation assembly; 101. Fermentation tank; 102. Tank cover; 103. Feed pipe; 104. Feed valve; 105. Air injection pipe; 106. Air injection valve; 107. PLC controller; 108. Feed pipe; 109. Feed valve; 110. Air outlet pipe; 111. Exhaust pipe; 112. Second electric one-way valve; 113. Sealing pad; 2. Detection assembly; 201. Mounting plate; 202. Fixing frame; 203. Detection tube; 204. Spherical cover; 205. Connecting pipe; 206 , fixing pipe; 207, recovery pipe; 208, delivery pipe; 209, air purifier; 210, annular pipe; 211, mounting hoop; 212, intake pipe; 213, first electric one-way valve; 214, diffusion pipe; 215, forward and reverse motor; 216, rotating rod; 217, sealing plate; 218, sealing ring; 219, guide plate; 220, guide groove; 221, mounting hole; 222, oxygen sensor; 223, rotating hole; 224, sealing sleeve; 225, rotating groove; 226, rubber sleeve. DETAILED DESCRIPTION

[0022] 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 implementation regulations described 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.

[0023] Example 1: Please refer to Figure 1-Figure 9As shown, the present invention provides a technical solution: an anaerobic microbial fermentation device, comprising a fermentation component 1, a detection component 2 is arranged on the outer surface of the fermentation component 1, the fermentation component 1 is used for anaerobic microbial fermentation, and the detection component 2 is used to detect the change of the injection amount of the oxygen-free gas; the fermentation component 1 comprises a fermentation tank 101, an outer surface of the fermentation tank 101 is fixedly connected with an injection pipe 105 near the top, and an outer surface of the fermentation tank 101 is fixedly connected with an outlet pipe 110 away from the injection pipe 105;The detection assembly 2 includes a mounting plate 201, a detection tube 203 is arranged on the top of the mounting plate 201, one end of the detection tube 203 is fixedly connected to a spherical cover 204, a mounting hole 221 is opened near the top of the outer surface of the detection tube 203, an oxygen sensor 222 is fixedly installed inside the mounting hole 221, a forward and reverse motor 215 is installed near the rear surface of the outer surface of the spherical cover 204 through an auxiliary plate, a rotating rod 216 is fixedly installed at the output end of the forward and reverse motor 215, a sealing plate 217 is fixedly installed on the outer surface of the rotating rod 216, a sealing ring 218 is fixedly connected to the outer surface of the sealing plate 217, and two sealing rings 218 are fixedly installed on the outer surface of one side of the sealing plate 217 The guide plate 219 has a plurality of guide grooves 220 on its outer surface. The outer surface of the sealing ring 218 contacts the inner wall of the spherical cover 204. The outer surface of the spherical cover 204 has a rotating hole 223 near the rear surface. The inner wall of the rotating hole 223 is fixedly connected with a sealing sleeve 224. The inner wall of the spherical cover 204 has a rotating groove 225. The inner wall of the rotating groove 225 is fixedly connected with a rubber sleeve 226. The outer surface of the rotating rod 216 is movably embedded in the sealing sleeve 224 and the rubber sleeve 226. The outer surface of the rotating rod 216 contacts the inner wall of the sealing sleeve 224 and the rubber sleeve 226. The inner wall of the detection tube 203 is fixedly installed with a diffusion tube 224. 14. A connecting pipe 205 is fixedly connected to the outer surface of the spherical cover 204 near the top, and one end of the connecting pipe 205 is connected to a fixed pipe 206 through a flange. An air purifier 209 is arranged on the outer surface of the fermenter 101, and one end of the fixed pipe 206 is connected to the input end of the air purifier 209 through a flange. A recovery pipe 207 is fixedly connected to the outer surface of the spherical cover 204 near the bottom, and the bottom end of the recovery pipe 207 is connected to a delivery pipe 208 through a flange. One end of the delivery pipe 208 is fixedly connected to an annular pipe 210, and an air inlet pipe 212 is fixedly connected to the outer surface of the annular pipe 210. The outer surface of the air inlet pipe 212 is provided with a first electric one-way valve 213, one end of the air inlet pipe 212 is fixedly connected to the outer surface of the air injection pipe 105 near the bottom, the outer surface of the fermenter 101 is located inside the annular pipe 210, and three mounting hoops 211 are fixedly installed on the outer surface of the annular pipe 210. The three mounting hoops 211 are all installed on the outer surface of the fermenter 101 by screws. The outer surface of the mounting plate 201 is installed on the outer surface of the fermenter 101 near the air outlet pipe 110 by bolts. The outer surface of the detection tube 203 is fixedly installed with a fixing frame 202, and the fixing frame 202 is installed on the top of the mounting plate 201 by bolts. The other end of the detection tube 203 is connected to one end of the air outlet pipe 110 through a flange. ;

[0024] In this embodiment, when in use, the feed valve 104, the gas injection valve 106, the discharge valve 109, the second electric one-way valve 112, the first electric one-way valve 213, the forward and reverse motor 215, the oxygen sensor 222 and the PLC controller 107 are electrically connected, and the opening and closing of other devices can be controlled by the operation buttons on the PLC controller 107. When the oxygen-free gas is injected into the fermentation tank 101 through the gas injection pipe 105 in the fermentation component 1, the oxygen-containing gas inside the fermentation tank 101 enters the detection tube 203 through the gas outlet pipe 110, as shown in FIG. Figure 5 As shown, the outlet of the gas outlet pipe 110 faces the diffuser 214, so that the discharged oxygen-containing gas first enters the diffuser 214. The structure of the diffuser 214 is wide at both sides and narrow in the middle. When the oxygen-containing gas enters the middle throat through the contraction section of the diffuser 214, the flow rate is accelerated, and then enters the expansion section of the diffuser 214. As the cross-sectional area of ​​the pipeline increases, the kinetic energy is converted into static pressure energy again, so that the gas flow rate is reduced, and the gas is more evenly distributed in the detection tube 203. In this way, a more stable gas flow can be provided for the subsequent oxygen detection in the gas, which is conducive to improving the accuracy of the detection and preventing the situation where the fast gas flow rate causes the residence time to be too short, causing the oxygen sensor 222 to be unable to accurately detect the oxygen content. Start the oxygen sensor 222 in advance to detect the oxygen content of the gas in the detection tube 203, and transmit the detected oxygen content to the PLC controller 107 in the form of an electrical signal. The maximum and minimum working thresholds of the oxygen content are set in advance inside the PLC controller 107. The PLC controller 107 will identify and compare the received oxygen content data. When the oxygen content data is detected to be lower than the set minimum working threshold, it means that the discharged gas is oxygen-free. When the oxygen content data is detected to be higher than the set minimum working threshold, it means that the discharged gas is still oxygen-containing. The inclination state of the sealing plate 217 and the two guide plates 219 is shown in FIG. Figure 5As shown, when it is detected that the outlet pipe 110 and the diffuser 214 discharge oxygen-containing gas, the two guide plates 219 guide upward so that the oxygen-containing gas flows along the upwardly inclined guide groove 220, thereby better guiding the oxygen-containing gas to the connecting pipe 205. With the cooperation of the guide plates 219 and the guide grooves 220, the guide function is played, which facilitates the gas to enter the connecting pipe 205 better. Then the oxygen-containing gas enters the fixed pipe 206 through the connecting pipe 205, and then enters the inside of the air purifier 209 for air purification treatment to reduce the impact on air quality. When it is detected that the outlet pipe 110 and the diffuser 214 discharge oxygen-free gas, the PLC controller 107 controls the gas injection valve 106 to close, stops gas injection, and starts the first electric one-way valve 213 and the forward and reverse motor 215. The rotation of the outlet end drives the rotating rod 216 to rotate in the sealing sleeve 224 and the rubber sleeve 226, and the sealing sleeve 224 and the rubber sleeve 226 increase the sealing between the rotating rod 216 and the spherical cover 204, further driving the sealing plate 217 and the sealing ring 218 to rotate counterclockwise. At this time, the detection tube 203, the spherical cover 204 and the recovery tube 207 are in a connected state. Under the sealing of the sealing plate 217 and the sealing ring 218, the connecting tube 205 is not connected with the detection tube 203, and the two guide plates 219 and the guide groove 220 are inclined downward, which is conducive to guiding the oxygen-free gas to the recovery tube 207, and then into the delivery pipe 208 and the annular pipe 210, and the accidentally discharged oxygen-free gas is transported to the gas injection pipe 105 through the air inlet pipe 212, and finally enters the fermentation tank 101 again, thereby reducing the waste of oxygen-free gas and improving the use efficiency. Under the action of the detection component 2, real-time monitoring of the injection amount of the oxygen-free gas is achieved, and at the same time, the discharged aerobic gas can be purified, and the accidentally discharged oxygen-free gas can be recycled and reused, thereby reducing the waste of the oxygen-free gas and the impact on the environment. The problem that during the use of the anaerobic microbial fermentation device, oxygen-free gas is injected into the fermentation tank through the pump body and the air inlet pipe, and the aerobic gas in the fermentation tank is discharged through the exhaust pipe, when the oxygen-free gas is injected excessively, part of the oxygen-free gas will be discharged into the external air through the exhaust pipe, which will not only cause a waste of oxygen-free gas resources, but also cause adverse effects on the environment.

[0025] Embodiment 2: Figure 1-Figure 3As shown, the fermentation assembly 1 includes a fermentation tank 101, an air injection pipe 105 is fixedly connected to the outer surface of the fermentation tank 101 near the top, an air outlet pipe 110 is fixedly connected to the outer surface of the fermentation tank 101 away from the air injection pipe 105, an air injection valve 106 is arranged on the outer surface of the air injection pipe 105, a sealing gasket 113 is fixedly connected to the top of the fermentation tank 101, a tank cover 102 is movably sleeved on the top of the fermentation tank 101, the top of the sealing gasket 113 is in contact with the top surface of the tank cover 102, and the tank cover 102 and the fermentation tank 101 are connected by bolts. A feed pipe 103 is fixedly connected to the top of the tank cover 102, a feed valve 104 is arranged on the outer surface of the feed pipe 103, the bottom end of the feed pipe 103 is fixedly passed through the inside of the tank cover 102, a PLC controller 107 is installed by screws on the outer surface of the fermentation tank 101 near the front surface, a discharge pipe 108 is fixedly connected to the bottom of the fermentation tank 101, a discharge valve 109 is arranged on the outer surface of the discharge pipe 108, an exhaust pipe 111 is fixedly connected to the top of the tank cover 102, and a second electric one-way valve 112 is arranged on the outer surface of the exhaust pipe 111.

[0026] In this embodiment, when in use, the top of the feed pipe 103 is connected to an external feeding device, one end of the gas injection pipe 105 is connected to an external gas supply device, the initial states of the feed valve 104, the gas injection valve 106, the discharge valve 109 and the second electric one-way valve 112 are all closed, the tank cover 102 and the fermentation tank 101 are connected by bolts, and a sealing gasket 113 is provided between the tank cover 102 and the fermentation tank 101, which can increase the sealing of the fermentation tank 101 and prevent external oxygen from entering and destroying the anaerobic environment. The feed valve 104 is controlled to open by the PLC controller 107, and the material to be processed is transported to the feed pipe 103 through the external feeding equipment, and then enters the fermentation tank 101. In the fermentation tank 101, after loading is completed, the feed valve 104 is closed, the gas injection valve 106 is opened, and then the oxygen-free gas is transported to the gas injection pipe 105 through the external gas supply equipment, and then the oxygen-free gas is transported to the inside of the fermentation tank 101. At the same time, the aerobic gas in the fermentation tank 101 is discharged to the detection component 2 through the outlet pipe 110. The detection component 2 is used to detect the change in the injection amount of the oxygen-free gas in the fermentation tank 101 in real time to avoid waste of the oxygen-free gas. When the inside of the fermentation tank 101 is in an anaerobic environment, the oxygen-free gas injection is stopped and the gas injection valve 106 is closed. At this time, the material to be processed is located in the fermentation tank 101, in an anaerobic environment, and anaerobic microorganisms begin to ferment and decompose the material. One end of the waste gas pipe 111 is connected to the waste gas treatment equipment. After fermentation for a certain period of time, the second electric one-way valve 112 is opened, and the waste gas generated by fermentation in the fermentation tank 101 can be discharged to the waste gas treatment equipment through the waste gas pipe 111 for waste gas treatment to reduce the impact of the waste gas on air quality. The second electric one-way valve 112 can prevent external aerobic air from entering the fermentation tank 101 when the waste gas is discharged, without affecting the fermentation of anaerobic microorganisms.

[0027] The effect and working principle achieved by the entire mechanism are as follows: the feed valve 104 is controlled to open by the PLC controller 107, and the material to be processed is transported to the feed pipe 103 through the external feeding equipment, and then enters the fermentation tank 101. After the loading is completed, the feed valve 104 is closed, the gas injection valve 106 is opened, and then the oxygen-free gas is transported to the gas injection pipe 105 through the external gas supply equipment, and then the oxygen-free gas is transported to the inside of the fermentation tank 101. At the same time, the aerobic gas in the fermentation tank 101 is discharged to the detection component 2 through the outlet pipe 110. The change of the injection amount of the oxygen-free gas in the fermentation tank 101 is detected in real time by the detection component 2 to avoid the waste of the oxygen-free gas. When the inside of the fermentation tank 101 is in an anaerobic environment, the injection of the oxygen-free gas is stopped, and the gas injection valve 106 is closed. At this time, the material to be processed is located in the fermentation tank 101, in an anaerobic environment, and anaerobic microorganisms begin to ferment and decompose the material. One end of the waste gas pipe 111 is connected to the waste gas treatment equipment. After a certain period of fermentation, the second electric one-way valve 112 is opened, and the waste gas generated by fermentation in the fermentation tank 101 can be discharged to the waste gas treatment equipment through the waste gas pipe 111 for waste gas treatment to reduce the impact of waste gas on air quality. The second electric one-way valve 112 can prevent external aerobic air from entering the fermentation tank 101 when the waste gas is discharged, and does not affect the fermentation of anaerobic microorganisms. The oxygen gas inside the fermentation tank 101 enters the detection tube 203 through the outlet pipe 110, first enters the middle throat through the contraction section of the diffusion tube 214, and then enters the expansion section of the diffusion tube 214. As the cross-sectional area of ​​the pipeline increases, the kinetic energy is converted into static pressure energy again, so that the gas flow rate is reduced, and the gas is more evenly distributed in the detection tube 203. This can provide a more stable gas flow for subsequent oxygen detection in the gas, which is conducive to improving the accuracy of the detection. Start the oxygen sensor 222 in advance to detect the oxygen content of the gas in the detection tube 203, and transmit the detected oxygen content to the PLC controller 107 in the form of an electrical signal. The maximum and minimum working thresholds of the oxygen content are set in advance inside the PLC controller 107. The PLC controller 107 will identify and compare the received oxygen content data. When the oxygen content data is detected to be lower than the set minimum working threshold, it means that the discharged gas is oxygen-free. When the oxygen content data is detected to be higher than the set minimum working threshold, it means that the discharged gas is still oxygen-containing. The inclination state of the sealing plate 217 and the two guide plates 219 is shown in FIG. Figure 5As shown, when it is detected that the outlet pipe 110 and the diffuser 214 discharge oxygen-containing gas, the two guide plates 219 guide upward so that the oxygen-containing gas flows along the upwardly inclined guide groove 220, thereby better guiding the oxygen-containing gas to the connecting pipe 205. With the cooperation of the guide plates 219 and the guide grooves 220, the guide function is played, which facilitates the gas to enter the connecting pipe 205 better. Then the oxygen-containing gas enters the fixed pipe 206 through the connecting pipe 205, and then enters the inside of the air purifier 209 for air purification treatment to reduce the impact on air quality. When it is detected that the outlet pipe 110 and the diffuser 214 discharge oxygen-free gas, the PLC controller 107 controls the gas injection valve 106 to close, stops gas injection, and starts the first electric one-way valve 213 and the forward and reverse motor 215. The rotation of the outlet end drives the rotating rod 216 to rotate in the sealing sleeve 224 and the rubber sleeve 226, and the sealing sleeve 224 and the rubber sleeve 226 increase the sealing between the rotating rod 216 and the spherical cover 204, further driving the sealing plate 217 and the sealing ring 218 to rotate counterclockwise. At this time, the detection tube 203, the spherical cover 204 and the recovery tube 207 are in a connected state. Under the sealing of the sealing plate 217 and the sealing ring 218, the connecting tube 205 is not connected with the detection tube 203, and the two guide plates 219 and the guide groove 220 are inclined downward, which is conducive to guiding the oxygen-free gas to the recovery tube 207, and then into the delivery pipe 208 and the annular pipe 210, and the accidentally discharged oxygen-free gas is transported to the gas injection pipe 105 through the air inlet pipe 212, and finally enters the fermentation tank 101 again, thereby reducing the waste of oxygen-free gas and improving the use efficiency. Under the action of the detection component 2, the injection amount of the oxygen-free gas can be monitored in real time, and the discharged oxygen-free gas can be purified and the accidentally discharged oxygen-free gas can be recycled and reused, thereby reducing the waste of oxygen-free gas and the impact on the environment.

[0028] Among them, the feed valve 104, the gas injection valve 106, the PLC controller 107, the discharge valve 109, the second electric one-way valve 112, the air purifier 209, the first electric one-way valve 213, the forward and reverse motor 215 and the oxygen sensor 222 are all existing technologies, and their components and usage principles are all public technologies, so no excessive explanation will be given here.

[0029] Although the present invention has been described in detail with reference to the aforementioned embodiments, it is still possible for those skilled in the art to modify the technical solutions described in the aforementioned embodiments, or to make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. An anaerobic microbial fermentation device, comprising a fermentation component (1), characterized in that: A detection component (2) is arranged on the outer surface of the fermentation component (1), the fermentation component (1) is used for anaerobic microbial fermentation, and the detection component (2) is used to detect changes in the amount of oxygen-free gas injected; The fermentation assembly (1) comprises a fermentation tank (101), an air injection pipe (105) is fixedly connected to the outer surface of the fermentation tank (101) near the top, and an air outlet pipe (110) is fixedly connected to the outer surface of the fermentation tank (101) away from the air injection pipe (105); The detection assembly (2) comprises a mounting plate (201), a detection tube (203) is arranged on the top of the mounting plate (201), one end of the detection tube (203) is fixedly connected to a spherical cover (204), a mounting hole (221) is provided on the outer surface of the detection tube (203) near the top, an oxygen sensor (222) is fixedly installed inside the mounting hole (221), a forward and reverse motor (215) is installed on the outer surface of the spherical cover (204) near the rear surface via an auxiliary plate, a rotating rod (216) is fixedly installed on the output end of the forward and reverse motor (215), a sealing plate (217) is fixedly installed on the outer surface of the rotating rod (216), and a sealing ring (218) is fixedly connected to the outer surface of the sealing plate (217).

2. The anaerobic microbial fermentation device according to claim 1, characterized in that: Two guide plates (219) are fixedly mounted on the outer surface of one side of the sealing plate (217), and the outer surfaces of the two guide plates (219) are each provided with a plurality of guide grooves (220). The outer surface of the sealing ring (218) contacts the inner wall of the spherical cover (204).

3. The anaerobic microbial fermentation device according to claim 2, characterized in that: A rotation hole (223) is provided on the outer surface of the spherical cover (204) near the rear surface, a sealing sleeve (224) is fixedly connected to the inner wall of the rotation hole (223), and a rotation groove (225) is provided on the inner wall of the spherical cover (204).

4. The anaerobic microbial fermentation device according to claim 3, characterized in that: The inner wall of the rotating groove (225) is fixedly connected to a rubber sleeve (226); the outer surface of the rotating rod (216) is movably embedded in the sealing sleeve (224) and the rubber sleeve (226); the outer surface of the rotating rod (216) contacts the inner walls of the sealing sleeve (224) and the rubber sleeve (226).

5. The anaerobic microbial fermentation device according to claim 4, characterized in that: A diffusion tube (214) is fixedly installed inside the detection tube (203); a connecting tube (205) is fixedly connected to the outer surface of the spherical cover (204) near the top; one end of the connecting tube (205) is connected to a fixed tube (206) via a flange; an air purifier (209) is arranged on the outer surface of the fermentation tank (101); one end of the fixed tube (206) is connected to an input end of the air purifier (209) via a flange.

6. The anaerobic microbial fermentation device according to claim 5, characterized in that: A recovery pipe (207) is fixedly connected to the outer surface of the spherical cover (204) near the bottom, the bottom end of the recovery pipe (207) is connected to a delivery pipe (208) via a flange, one end of the delivery pipe (208) is fixedly connected to an annular pipe (210), and the outer surface of the annular pipe (210) is fixedly connected to an air intake pipe (212).

7. The anaerobic microbial fermentation device according to claim 6, characterized in that: A first electric one-way valve (213) is provided on the outer surface of the air intake pipe (212); one end of the air intake pipe (212) is fixedly connected to the outer surface of the air injection pipe (105) near the bottom; the outer surface of the fermenter (101) is located inside the annular pipe (210); three mounting hoops (211) are fixedly mounted on the outer surface of the annular pipe (210); the three mounting hoops (211) are all mounted on the outer surface of the fermenter (101) by means of screws.

8. The anaerobic microbial fermentation device according to claim 7, characterized in that: The outer surface of the mounting plate (201) is mounted on the outer surface of the fermentation tank (101) near the gas outlet pipe (110) by means of bolts, and a fixing frame (202) is fixedly mounted on the outer surface of the detection tube (203), and the fixing frame (202) is mounted on the top of the mounting plate (201) by means of bolts, and the other end of the detection tube (203) is connected to one end of the gas outlet pipe (110) by means of a flange.

9. The anaerobic microbial fermentation device according to claim 1, characterized in that: An air injection valve (106) is arranged on the outer surface of the air injection pipe (105); a sealing gasket (113) is fixedly connected to the top of the fermentation tank (101); a tank cover (102) is movably sleeved on the top of the fermentation tank (101); the top of the sealing gasket (113) is in contact with the top surface inside the tank cover (102); the tank cover (102) and the fermentation tank (101) are connected by bolts; a feed pipe (103) is fixedly connected to the top of the tank cover (102); and a feed valve (104) is arranged on the outer surface of the feed pipe (103).

10. The anaerobic microbial fermentation device according to claim 9, characterized in that: The bottom end of the feed pipe (103) is fixedly connected to the inside of the tank cover (102); a PLC controller (107) is installed on the outer surface of the fermentation tank (101) near the front surface by screws; a feed pipe (108) is fixedly connected to the bottom of the fermentation tank (101); a feed valve (109) is arranged on the outer surface of the feed pipe (108); an exhaust pipe (111) is fixedly connected to the top of the tank cover (102); a second electric one-way valve (112) is arranged on the outer surface of the exhaust pipe (111).

Images