68 results about "Oxygen deficiency" patented technology

The invention discloses a vehicle monitoring method and device based on multi-modal fusion perception. The method comprises the steps that when it is monitored that a vehicle enters a locked state, the pressure change of a seat in the vehicle or the micro-motion characteristic of a detained object in the vehicle is collected; when the pressure change or the micro-motion feature meets an event triggering condition, triggering equipment in the vehicle to start, and collecting image feature information and audio feature information of the retained object; obtaining time-frequency spectrum feature information; processing the three kinds of information by using a feature fusion model to obtain joint reliability; when the joint reliability is higher than a reliability threshold, generating an emergency processing strategy; and according to the emergency processing strategy, the vehicle is triggered to conduct air exchange or ventilation operation. According to the invention, the technical problem of accidents caused by high temperature or oxygen deficit and the like in the vehicle due to the fact that a single sensing mode of a vehicle monitoring system in the related technology is difficult to effectively detect whether life bodies are retained in the vehicle in a vehicle locking state and an emergency processing strategy cannot be taken in time is solved.

The invention discloses a pressure pipeline welding arc-shaped gasket device in the technical field of pipeline welding, which comprises a machine body frame, a mechanical arm and a reducing mechanism, and further comprises a retainer detachably connected with the machine body frame, a plurality of sections of gasket brackets are uniformly distributed on the periphery of the retainer in the circumferential direction, and the sections of gasket brackets can be sequentially spliced end to end to form a ring; each section of gasket support is provided with a gasket assembly capable of being in butt joint through a quick release structure, a driving piece and a limiting piece are installed on the retainer, the driving piece can control all the gasket supports to synchronously rotate around the radial axes of the gasket supports, and the limiting piece assists the gasket supports in synchronous radial displacement in the rotating process. According to the method, the problems that in existing large pressure pipeline circular seam root welding, workers still need to enter the pipe for manual lining attaching, and consequently oxygen deficit poisoning radioactive high-risk operation is caused, the back face forming defect is caused by gasket circumference dislocation, and after-welding heat affected zone adhesion is difficult to detach are solved, so that limited space operation is thoroughly eliminated, and the welding seam quality and the construction efficiency are synchronously improved are solved.

The invention provides an environment-friendly high-temperature-resistant low-smoke halogen-free flame-retardant cable, relates to the technical field of cables, and solves the technical problems of material embrittlement, insufficient oxygen isolation, high temperature resistance and flexibility imbalance caused by high filling of a flame retardant in the prior art. The cable sequentially comprises a copper alloy conductor, a nano compound insulating layer, a ceramic oxygen barrier layer and a bio-based LSZH sheath layer from inside to outside, a material compound system realizes the balance of flame retardance and mechanical properties through nano inorganic flame retardance, organic synergistic flame retardance and base material modification, and the environmental protection property is improved by doping bio-based PLA; and through three-layer co-extrusion and sectional gradient irradiation crosslinking, the production efficiency and the product consistency are improved. The long-term working temperature of the cable is 150-180 DEG C, the flame retardant rating reaches class A, the smoke density is smaller than or equal to 100 Dm, the tensile strength is larger than or equal to 12 MPa, the fire-resistant time is larger than or equal to 180 min, and the material cost is reduced by 10-15%.

The invention relates to the technical field of fertilizer fermentation, in particular to an oxygen supply device and method for agricultural microbial fertilizer fermention.The oxygen supply device comprises a fermentation tank and a feeding port for feeding materials, and further comprises an oxygen deficit monitoring module and an oxygen deficit monitoring module, and the oxygen deficit monitoring module comprises inner side supporting rods arranged at different layer depths of the fermentation tank; an element analyzer, an oxygen sensor array and a microwave moisture meter are respectively arranged in the inner side supporting rod; the oxygen supply mechanism comprises a stirring aeration assembly and a nitrogen adding assembly; the stirring aeration assembly comprises a stirring spiral sheet which is rotatably arranged in the fermentation tank and a plurality of spiral connecting frames which extend along the radial direction of the stirring spiral sheet, and the wall part of each spiral connecting frame is provided with an aeration system which can be controlled to be opened and closed; the Roots blower is used for providing a gas source for the aeration system and discharging gas through the interior of the spiral connecting frame; the nitrogen adding assembly comprises a nitrogen storage cavity in which a nitrogen source is stored, and a nitrogen discharging pipe which is used for conveying gas and the nitrogen source into the fermentation tank and is provided with a nozzle.

The invention discloses equipment for putting fish fries into a pond, and belongs to the technical field of fish culture equipment. Comprising a lifting mechanism and a guiding and conveying mechanism, the guiding and conveying mechanism is arranged at the output end of the lifting mechanism and comprises a bearing assembly and a plurality of flow dividing assemblies, each flow dividing assembly comprises a floating pipe, a connecting pipe and two guiding parts, the right end of each connecting pipe is fixedly connected with the left end of the corresponding floating pipe, and an inserting groove is formed in the right end of each floating pipe; the guide part comprises a sealing plate and rotating shafts, overflow holes are symmetrically formed in the front side and the rear side of the floating pipe, the rotating shafts are vertically and rotatably installed on the side portions of the overflow holes, the sealing plate is vertically and rotatably arranged in the overflow holes and fixedly connected to the rotating shafts in a sleeving mode, and the two rotating shafts are connected through a linkage mechanism; a diversion assembly is arranged on the upper side of the floating pipe and used for drainage. The problem that fish fries are gathered in a local area within a short time and are prone to death due to crowding and oxygen deficit is effectively solved.

The invention discloses a diving protective mask supporting temporary oxygen supply in emergency, and relates to the technical field of diving equipment, the diving protective mask comprises a mask body, a breathing tube body connected with the mask body and a soft silica gel membrane arranged at one end of the breathing tube body, and further comprises a gas inlet and outlet mechanism arranged on the outer wall of the breathing tube body, the temporary oxygen generation mechanism is arranged at the bottom of the outer wall of the breathing tube body, and a small amount of oxygen can be temporarily provided when a diver encounters an emergency of oxygen deficit underwater through the temporary oxygen generation mechanism and the gas inlet and outlet mechanism, so that the brain oxygen deficit state is relieved, and when the diver encounters the oxygen deficit condition, the oxygen deficit state is relieved. When the diver is in use, 'suffocated gas' is blown into the bottom bin and reacts with sodium peroxide filled in the loading box to generate a small amount of oxygen, and then the diver can directly inhale the oxygen, so that the diver recovers consciousness, subconscious water inhaling is avoided, and a self-rescue opportunity can be provided for the diver in emergency situations.

The invention discloses a gas control device for a coal face, and belongs to the technical field of gas control. Comprising a supply mechanism used for supplying air to a device placement position, and a detection mechanism and a collection mechanism are arranged on the supply mechanism; by arranging the detection mechanism, when the detector detects that the concentration of gas around the device rises to a preset safety early warning value, the collection mechanism is automatically started, accumulated gas is forcibly discharged into the gas collection pipe, and advanced treatment and quick response to gas hidden dangers are achieved; air supply, gas extraction and dust filtration are integrated into a single device, a supply mechanism can supplement fresh air to the deep position of a working face, and oxygen deficit is prevented; the collecting mechanism can actively extract high-concentration gas from the source of the coal mining machine, and dust is filtered before the gas enters a conveying pipeline; and the detection mechanism is used for monitoring the gas concentration around the device placement point in real time and treating locally accumulated gas.

The application discloses a circulating fluidized bed boiler with ash partition measurement, comprising: a furnace, a separator and an ash parameter analysis system; the furnace has at least two regions in the circumferential direction, and a bottom slag sampling device for obtaining a bottom slag sample of each region is arranged below each region; a separator is correspondingly arranged above each region, and a fly ash sampling device is arranged at the separator outlet flue at the top of each separator, which is used for obtaining a fly ash sample of the corresponding region; the ash parameter analysis system is in communication with the bottom slag sampling device and the fly ash sampling device. The ash parameter partition measurement method is adopted to quickly obtain the particle size distribution and carbon content of the ash in different regions, the obtained data are used to guide the operation personnel to accurately adjust the fuel quantity, air quantity, circulating material and slag discharge quantity of different regions, the local fluidization is reduced, the combustion in the oxygen deficiency region is improved, the content of combustible substances in the ash is reduced, and the overall fuel combustion efficiency is improved.

The invention discloses a closed sputum suction system with automatic drainage and liquid level alarming functions, and particularly relates to the technical field of drainage and sputum suction, the closed sputum suction system comprises a drainage cover, the upper surface of the drainage cover is communicated with a liquid inlet pipe, and a drainage head is inserted above the liquid inlet pipe; the separating piece is located on the outer wall of the drainage head, and a plurality of limiting strips are installed on the separating piece; the covering part is arranged below the separating part, and a protective block is arranged on the covering part; and the negative pressure head is positioned above the drainage cover and is far away from the liquid inlet pipe. The sputum suction system has the advantages that the possibility of over-limit operation of the sputum suction system is directly eradicated, mucous membrane injury and patient hypoxia risks caused by violation or misoperation of medical staff are effectively avoided, and the safety of drainage and sputum suction is remarkably improved, so that the problem that if the doctor's advice is not strictly followed, the operation is still forcibly continued after the number of sputum suction times specified by a doctor is reached, and the sputum suction efficiency is greatly improved is solved. The safety of drainage and sputum suction of the patient is greatly reduced due to violation or misoperation, and the risk of complications of the patient is increased.

The invention discloses an oxygenation drip irrigation method for saline-alkali soil crops and application of the oxygenation drip irrigation method, and belongs to the technical field of agricultural irrigation. The method comprises the steps of supplying irrigation water with the dissolved oxygen content of 10-15 mg / L to roots through a drip irrigation system in the key period of vegetative growth of crops, and carrying out oxygenation drip irrigation operation for at least two times. The invention further particularly provides a method for adjusting the enzyme activity of the soil in the root zone of the crop based on the saline-alkali soil oxygenation drip irrigation and an oxygenation drip irrigation method for improving the yield of the crops in the saline-alkali soil. The core of the method lies in that the time, frequency and oxygen concentration of oxygenation irrigation are accurately controlled, the problem of oxygen deficit of the saline-alkali soil crop root zone is effectively relieved, and therefore the soil micro-ecological environment is improved, root development and plant growth are promoted, and finally collaborative improvement of the crop yield and quality is achieved.

The invention relates to the technical field of rapid hemostasis application, in particular to a rapid compression hemostasis device which comprises a compression hemostasis block, two positioning clamping belts and an elastic buckling belt, and the rapid compression hemostasis device not only conducts physical compression hemostasis on a wound through the compression hemostasis block, but also combines the function of medicine hemostasis. The compression ring in the compression hemostasis block can accurately compress the periphery of a wound, the bleeding amount is reduced, the medicine block enables hemostasis medicine to directly act on the wound through the medicine penetrating layer, and the hemostasis effect is enhanced. In a battlefield or an emergency medical scene, bleeding can not be completely controlled by purely relying on compression hemostasis, but the hemostasis efficiency can be remarkably improved and the blood loss risk can be reduced by adding the medicine. In addition, due to the design of the cotton ring and the medicine permeating layer of the medicine block, air permeability of the wound can be kept, it can be guaranteed that medicine continuously acts on the wound, and wound oxygen deficit or infection caused by too tight compression is avoided.

The utility model relates to the technical field of seedling culture, in particular to an oxygenation and heat preservation device for seedling culture, which comprises a protective top cover, a digital display temperature controller, an oxygen pump, an air delivery pipe, a temperature control assembly and an oxygenation adjusting assembly, the protective top cover is clamped at the top of a culture pond body, and the digital display temperature controller is mounted on the outer side of the bottom of the culture pond body; the oxygen pump is in threaded connection to the inner side of the top of the culture pond body, the gas delivery pipe is fixedly connected to the outer side of the input end of the oxygen pump, the temperature control assemblies are installed on the two sides of the bottom of the culture pond body, and the oxygenation adjusting assembly is installed on the outer side of the output end of the oxygen pump. According to the oxygenation and heat preservation device for seedling culture, by introducing the oxygenation adjusting assembly, the device can provide oxygenation for different water levels in the culture pond body, exchange and mixing of the upper water layer and the lower water layer are effectively promoted, the layering phenomenon of the water body is prevented, and it is ensured that the lower water body can obtain sufficient dissolved oxygen; therefore, the problem of death of organisms in the lower-layer water body due to oxygen deficit is avoided.

This utility model discloses an aeration device for aquaculture, including a floating hull, a motor, and a water-spraying impeller. An aeration pipe is installed at the bottom of the floating hull. The motor is fixedly mounted on the floating hull, and the water-spraying impeller is fixedly mounted on the output shaft of the motor. The floating hull includes a buoy and a connecting rod. The motor and the buoy are fixedly connected via the connecting rod. A water-shoveling blade is installed on the side end face of the water-spraying impeller, and an axial flow impeller that cooperates with the aeration pipe is installed at the bottom of the impeller. This utility model has the advantages of synergistic surface water-spraying aeration and deep aeration, high air-water mixing efficiency, low energy consumption, and adaptability to different water depths, solving the problems of stratified aeration, oxygen deficiency at the bottom layer, and high energy consumption in traditional equipment.

The invention discloses a continuous low-value waste plastic thermal cracking isolation incineration purification system which comprises a controller, a feeding mechanism, a furnace body and a smoke cooling purification system, the feeding mechanism, the furnace body and the smoke cooling purification system are connected with the controller, an isolation hood is arranged in the furnace body, and an inner cavity of the furnace body is divided into a pyrolysis cavity and a cracking combustion cavity which are independent from each other through the isolation hood; the input end of the flue gas cooling and purifying system is connected with the pyrolysis combustion cavity, the feeding mechanism is connected with the pyrolysis cavity, and an oil outlet mechanism is arranged at the lower end of the furnace body and connected with the pyrolysis cavity; an injection mechanism is arranged on the furnace body, the input end of the injection mechanism is connected with the pyrolysis cavity, and the output end of the injection mechanism is connected with the cracking combustion cavity. The furnace body is divided into the pyrolysis cavity and the cracking combustion cavity through the isolation cover, pyrolysis is conducted under the oxygen-free or oxygen-deficient condition, and generation of harmful substances such as dioxin is inhibited; combustible gas generated through pyrolysis can heat the pyrolysis cavity through high-temperature combustion of the pyrolysis combustion cavity, and the energy utilization rate is increased.

This utility model relates to the field of fish hypoxia monitoring and alarm technology, specifically a portable plug-in fish hypoxia monitoring alarm, including an alarm body with a power cord on its top; a storage mechanism located on the side wall of the alarm body for winding and storing the power cord; and a limiting mechanism located on the side wall of the alarm body for limiting the power cord wound and stored by the storage mechanism. The storage mechanism has an internal channel for the working end of the limiting mechanism to pass through. By incorporating this storage mechanism, the alarm body can be easily carried by staff, preventing the power cord from dragging on the ground due to its length, thus reducing inconvenience when carrying the alarm.

The invention provides a closed compartment environment intelligent monitoring and safety protection method and system, and belongs to the field of in-vehicle environment safety protection. The method comprises the following steps: acquiring a gas concentration parameter and a temperature parameter in a closed compartment in real time through a compartment environment acquisition module, and sending the parameters to a data calculation and control module; the data calculation and control module preprocesses the data, compares the data with a preset danger threshold value, and judges whether safety early warning is triggered or not; if the danger threshold value is reached, the data calculation and control module sends a prompt to a user, generates a CAN control instruction and sends the control instruction to the execution terminal module through a CAN bus; if the dangerous threshold value is not reached, continuing to receive the next round of collected data; and after receiving the CAN control instruction, the execution terminal module executes a corresponding compartment environment adjustment operation. According to the invention, intelligent monitoring and active safety protection of the closed compartment environment are realized in a simple and low-cost manner, and safety accidents caused by oxygen deficit and high temperature are effectively prevented.

This invention provides a tunnel ventilation construction method, belonging to the field of tunnel engineering. It includes: ventilation of the entrance work area and cross passage work area, using a single-machine, single-pipe forced-in method to inject fresh air into the excavation face; ventilation after tunnel breakthrough, utilizing cross passages for tunnel ventilation; and tunnel dust control, implementing dust control throughout the entire tunnel excavation stage. The aim is to solve the problems of turbulent airflow and insufficient air supply that are common in existing tunnel ventilation construction methods. The achieved technical effects are: avoiding localized oxygen deficiency and harmful gas accumulation caused by turbulent airflow, and significantly improving the air circulation and safety of the working face during tunnel ventilation construction.

The utility model discloses a high-dissolved-oxygen-content constructed wetland system for removing sulfonamide antibiotics. The high-dissolved-oxygen-content constructed wetland system comprises a shell, a filler module and a water supply module, the filler module is mounted in the shell, and a water outlet is formed in the shell; the filler module sequentially comprises a vermiculite filler layer, a sludge biochar composite filler layer and a ceramsite filler layer from top to bottom, the thickness of the vermiculite filler layer, the thickness of the sludge biochar composite filler layer and the thickness of the ceramsite filler layer are 20-40 cm respectively, and wetland plants are planted in the vermiculite filler layer; according to the vertical flow constructed wetland system, vermiculite, composite sludge biochar and ceramsite are used as fillers of the constructed wetland, and the internal structure and porosity of the vertical flow constructed wetland system are changed by adjusting the combination mode of the fillers and setting the height of the fillers, so that the content of dissolved oxygen in the system is increased, the activity of microorganisms in the system is ensured, and the service life of the system is prolonged. The additional aeration process due to insufficient oxygen is reduced, and the removal efficiency of the vertical flow constructed wetland on various pollutants is improved.

The embodiment of the utility model provides a forestry tree cultivation frame which comprises a support used for providing support; the ventilating base is positioned at the bottom of the bracket and is provided with a plurality of ventilating holes; the vertical ventilation pipe is arranged on one side or in the middle of the support and penetrates through the support, the lower end of the vertical ventilation pipe is led into the ventilation base, and the upper end of the vertical ventilation pipe extends to the position above the sapling planting soil surface; the automatic lifting adjusting mechanism is fixed above or inside the support and moves up and down to adjust the height of the support; the drainage channel system is arranged at the edge of the breathable base and is communicated with the outside of the cultivation frame; the ventilation holes of the ventilation base are arranged in a fan shape and are different in size, the large ventilation holes are formed in the periphery, and the small ventilation holes are distributed in the center. And one or more waterproof ventilation valves are arranged around the ventilation holes. Through the scheme of the embodiment of the invention, the problem that the plant roots are possibly damaged due to oxygen deficit or water accumulation can be solved.

To solve the aforementioned problem, the present invention is a multilayer film characterized in that a layer containing cerium oxide contains cerium oxide including a cubic crystal system polycrystal structure and a columnar structure, the film thickness of the layer containing cerium oxide is 85 nm or more and 800 nm or less, when the entire layer containing cerium oxide is defined as a region (A) and the oxygen deficiency rate of cerium oxide in the region (A) is defined as an oxygen deficiency rate (V A ), the oxygen deficiency rate (V A ) is 0.05% or more and 10% or less, the film thickness of a layer containing silicon oxide or a layer containing magnesium fluoride is 50 nm or more and 240 nm or less, and the refractive index of the low-refractive layer with respect to light with a wavelength of 500 nm is 1.65 or less.

The utility model discloses a fruit packaging box, which relates to the technical field of fruit packaging, and is technically characterized by comprising a corrugated carton, handles are arranged on two side walls of the corrugated carton, two folding cover plates are arranged at the upper end of the corrugated carton, a storage mechanism for storing fruits is arranged in the corrugated carton, and the folding cover plates are arranged on the upper end of the corrugated carton. The storage mechanism comprises a containing frame arranged in the corrugated carton, a plurality of grating plates are arranged in the containing frame, and a plurality of first supporting rods are arranged on the inner wall of the folding cover plate. By arranging the storage mechanism, proper gas exchange can be carried out on fruits inside and outside a package, accelerated decay caused by insufficient oxygen or excessive carbon dioxide accumulation is avoided, and meanwhile, the fruits are separated, so that damage caused by mutual extrusion between the fruits is avoided.

To provide a technique for improving heat resistance in a catalyst for dehydrogenation reaction.SOLUTION: A main phase composed of perovskite-type oxides represented by the general formula (LA-xA ' x) (LA-y-zByB ' z) A1 - δ (where A is at least one element selected from alkaline earth metals, A ' is at least one element of Zr1 and Y, B is at least one element of Ti and Ce, B ' is at least one element selected from Y, Sc, Yb, Al, In, and Nd, 0 ≤ x ≤ 0.4, 0.3 ≤ (1-z) ≤ 1, 0 ≤ y, 0 <(1-y-z) are satisfied, and δ represents an oxygen deficiency amount), a main phase composed of perovskite-type oxides represented by the general formula AB ' 2O4, A2B ' 2O5, O3, and a sub-phase composed of at least one of three composite oxides represented by A3B ' 4O9.SELECTED DRAWING: Figure 2

The utility model belongs to the technical field of food packaging, and particularly relates to an anti-pollution adjustable breathable film structure for edible mushroom packaging, which comprises a packaging film main body, a plurality of groove bodies are arranged on the packaging film main body, adjustable breathable components are fixedly connected in the plurality of groove bodies, and one end of each adjustable breathable component is fixedly connected with a pulling component. Through the cooperation of the pulling piece and the adjustable ventilation assembly, when the temperature is high, ventilation adjustment in the package is achieved, the problems of too high humidity, insufficient oxygen and the like in the package caused by temperature rise are solved, freshness retaining of edible mushrooms is improved, when the temperature is reduced, the ventilation volume is reduced, a proper microenvironment in the package is kept, and the freshness retaining effect of the edible mushrooms is improved. Therefore, the packaging effect and the fresh-keeping quality of the edible mushrooms are ensured.

The invention provides perfusion equipment and method for organ transfer, and relates to the technical field of medical instruments.The perfusion equipment comprises an organ bin, a perfusion tank, a driving pump, an oxygenator, a first-stage bubble discharging assembly, a bubble detection part, a second-stage bubble discharging assembly, a pipeline assembly and a valve device; the bubble detection part detects whether the perfusate contains bubbles or not in real time; the first-stage bubble discharging assembly and the second-stage bubble discharging assembly form two-stage gradient bubble removal; the pipeline assembly comprises a main pipeline and branch pipelines, and the main pipeline forms a main filling circulation path; the secondary bubble discharging assembly is connected to the main pipeline in parallel through the branch pipeline. The valve device switches the conveying pipeline to ensure that no bubble enters the organ bin. According to the invention, through two-stage gradient bubble removal, the ability to deal with sudden bubbles is improved; the storage tank continuously supplies liquid to guarantee continuous filling of the organ bin; the organ hypoxia injury caused by shut-down bubble removal is avoided; the purpose of improving the safety, continuity and stability of the filling equipment is achieved.

The invention belongs to the technical field of aquaculture and discloses an illumination-adjustable aquaculture seedling raising box which comprises a base, a box body is fixedly installed at the top of the base, a backflow mechanism is fixedly installed on the outer side of the box body, an illumination mechanism is fixedly installed at the upper end of the back face of the base, and a controller is fixedly installed at the upper end of the front face of the box body. According to the device, a second motor is adopted to drive a bevel gear to drive a water body in a backflow pipe to circularly flow, dissolved oxygen is evenly distributed in the box body, the problem of low oxygen at the bottom of the box is effectively solved, the risk that seedlings are suffocated due to oxygen deficit is reduced, water flow circulation can further drive the seedlings to move, local gathering is prevented, and the seedlings are promoted to move and exercise; in addition, the circulating water flow can suspend and discharge metabolic waste, the waste is prevented from being decomposed to consume dissolved oxygen and release toxic substances, the water quality is kept stable, stimulation and poison of water quality deterioration to seedlings are reduced, and a good water environment is created for growth of the seedlings.

This utility model relates to the field of aquaculture technology, specifically an escape-proof leech farming cage. It includes a cage body with an opening and escape-proof door at the top. The cage body is fitted inside an outer frame, which includes multiple side rods and several connectors. A cleaning assembly is provided on the outer frame, comprising four movable sleeves. A brush plate is positioned between adjacent side rods, and several bristles are inserted into the inner surface of the brush plate, with the ends of the bristles adhering to the outer surface of the cage body. This escape-proof leech farming cage, through the cleaning assembly, allows the movable sleeves to slide along the side rods, causing the brush plate and bristles to move against the outer surface of the cage body, effectively cleaning attached suspended matter, preventing mesh blockage, maintaining water circulation within the cage, and reducing oxygen deficiency.

The utility model provides a biological membrane fermentation device which comprises two fermentation tanks, a base is arranged on one sides of the two fermentation tanks, and an oxygen control assembly and an auxiliary assembly are arranged on the base. The oxygen control assembly comprises an air purifier arranged at the top of the base, an air pump arranged on the air purifier, an air conveying pipe arranged at the output end of the air pump and a flow dividing pipe arranged at one end of the air conveying pipe, and the two ends of the flow dividing pipe extend into the two fermentation tanks respectively. The air blower, the air purifier, the ventilation pipe fitting, the oxygen detector and the like are arranged, the oxygen detector can monitor the oxygen content in the fermentation tank in different fermentation periods, the air blower is used for conveying air into the air purifier for purification when the fermentation tank is lack of oxygen, and then the ventilation pipe fitting is used for conveying oxygen into the fermentation tank; the required water quantity can be accurately added into the fermentation tank by utilizing the flow controller, and the water in the water storage tank can be automatically conveyed into the fermentation tank through the water conveying pipe by virtue of the water pump in case of water shortage.

The invention discloses a TiO2-doped ZnO wave-absorbing material and a preparation method thereof, and relates to the technical field of wave-absorbing materials. The chemical formula of the wave-absorbing material is Zn1-xTixO1-delta, x is greater than or equal to 0 and less than or equal to 0.2, and delta represents oxygen deficiency caused by Ti < 4 + > substitution; the doping mass ratio of TiO2 in the wave-absorbing material is 0 to 20 percent. The preparation method comprises the following steps: (1) preparing materials; (2) primary ball milling; (3); drying for the first time; (4) presintering; (5) crushing; (6) performing ball milling for the second time; (7) drying for the second time; (8) granulating and forming; (9) discharging glue; and (10) sintering. The dielectric loss of ZnO is improved through tetravalent Ti ion doping and introduction of an additional interface and dipole polarization, the wave-absorbing material with excellent wave-absorbing performance is obtained, and meanwhile the preparation method is simple, low in cost and suitable for mass production.

The invention provides a waste gas purification device suitable for environmental protection engineering construction. The waste gas purification device structurally comprises a bottom plate, a control end, a purification tank, a suction pipe and an output structure, the upper portion of the bottom plate is in spacing fit with the control end, the purification tank is vertically positioned, and the side edge of the purification tank and the control end are of an integrated structure; on the basis of an output structure carried at the upper end of a purification tank, an output block is installed above a suction pipe through a supporting device and then connected to the side edge of a guide structure through a straight pipe, and meanwhile a limiting ring of the guide structure is installed at the top end of the purification tank through a splicing body of a balance disc; according to the utility model, the purification tank jets the purified gas upwards, then the gas is guided by the straight pipe of the connecting groove and finally flows back to the small-range construction site with the barrier from the through groove area of the output block, so that the situation that the oxygen is insufficient due to the fact that the air in the small-range construction site with the barrier is continuously pumped out is prevented; and the sufficient effect of internal air is ensured.

The present application relates to the technical field of industrial furnace intelligent regulation, and particularly relates to an oxygen regulation method and system for an oxygen-enriched combustion system. The method comprises the following steps: obtaining limited measurement point operation data and fuel feeding state data of an oxygen-enriched combustion furnace; performing furnace space measurement point scope matching according to the limited measurement point operation data to obtain furnace space correlation data; positioning a fuel reaction interval in combination with the fuel feeding state data to obtain fuel reaction interval data; performing oxygen consumption space backstepping according to the limited measurement point operation data, the furnace space correlation data and the fuel reaction interval data to obtain furnace oxygen consumption distribution data; identifying local oxygen deficiency risk based on the furnace oxygen consumption distribution data to obtain local oxygen deficiency risk data; and generating partitioned oxygen supply control data according to the local oxygen deficiency risk data. The present application can improve the local oxygen deficiency risk identification accuracy and the oxygen regulation pertinence under the condition of limited measurement points, and reduce excessive oxygen supply and insufficient combustion.