1698 results about "Polluted environment" patented technology

The invention relates to the technical field of aging detection, and discloses a xenon lamp simulation environment aging detection method and system for a water-based waterproof material. The method comprises the following steps: testing a water-based waterproof material sample in an aging detection platform and collecting first aging response data; calculating a characteristic spectrum drift parameter combination in combination with the first aging response data, and solving a multi-factor aging dynamics equation set to obtain three-dimensional environment field data; inputting the three-dimensional environment field data into a back propagation neural network to carry out multi-factor environment parameter collaborative optimization to obtain an intelligent control parameter combination; performing test parameter adjustment and detection on the aging detection platform according to the intelligent control parameter combination to obtain second aging response data; and performing spectral attenuation index calculation and aging degree grading based on the second aging response data to obtain an aging state evaluation result of the water-based waterproof material sample. According to the method, multi-dimensional quantitative characterization of the aging state of the water-based waterproof material and scientific prediction of the service life of the water-based waterproof material in an acid pollution environment are realized.

The invention provides an intelligent control method and system for air purification equipment. According to the method, multi-dimensional environment data, including pollutant three-dimensional space data captured by air purification equipment, real-time airflow velocity and concentration distribution, in an open type pollution environment are obtained, a pollutant distribution thermodynamic diagram is generated, and the multi-dimensional data and the thermodynamic diagram are jointly coded to form a pollution concentration gradient map. Meanwhile, a historical control strategy data set is collected, cross-environment matching is carried out on the historical control strategy data set and the atlas, and diversion control characteristics associated with the pollutant diffusion direction are extracted; on the basis of the mapping relation between the characteristics and the atlas, a dynamic flow guide parameter set is determined, an intelligent control instruction of the air purification equipment is finally generated, and directional airflow disturbance and air distribution optimization control over the high-concentration area are achieved. According to the technical scheme, the intelligent control efficiency and precision of the air purification equipment can be improved.

The invention provides solid-waste-based fluid-state solidified soil and a preparation method of the solid-waste-based fluid-state solidified soil. The solid waste-based flow state solidified soil comprises a filling material, a framework material and a reinforcing material, the filling material comprises the following components in parts by weight: 60-95 parts of engineering residue soil, 5-40 parts of alkaline waste residues, 5-30 parts of a cementing material, 1-10 parts of a polymer emulsion, 0.5-3 parts of silica fume, 0.1-1 part of cellulose ether, 0.1-1 part of a compound water reducing agent and 0.5-2 parts of an exciting agent. The framework material comprises waste concrete blocks and / or waste brick blocks; the reinforcing material comprises a waste safety net and / or fiber gridding cloth. The flow-state solidified soil can achieve rapid backfilling in a narrow space, is excellent in shrinkage cracking resistance and impermeability, simple in preparation method and convenient to apply and construct, effectively solves the problems that the flow-state solidified soil is large in shrinkage, prone to cracking and the like, improves the quality of a backfilling project, achieves in-situ resource utilization of construction waste, and reduces the construction cost. And the construction cost of engineering can be reduced, and the problems of land occupation, environment pollution and the like caused by solid waste stacking are reduced.

The invention belongs to the field of metal materials, and particularly relates to high-elongation and high-forming passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components of C, Si, Mn, Al, V, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.

The invention belongs to the field of metal materials, and particularly relates to high-formability steel for a passenger car and a production method of the high-formability steel, the steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the following chemical components: C, Si, Mn, Al, Ti, Ta, Bi, Sb, Ni, Pt and Y, P is limited to be less than or equal to 0.015%, S is limited to be less than or equal to 0.005%, N is limited to be less than or equal to 0.003%, and the balance is Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of acid pickling and cold rolling are reduced, the production process is simplified, and the environment is not polluted.

The invention discloses a complex water body pollution detection method and system based on an adaptive cruise technology, and belongs to the technical field of environment monitoring. The method overcomes the inherent defect that an existing monitoring scheme based on a static preset path cannot adapt to a dynamic pollution environment by constructing a closed-loop feedback control architecture of real-time sensing, central decision making and dynamic execution. Generating initial global pollution distribution estimation and planning an initial path by the main aircraft; the subordinate vehicle sails along the path and estimates the local pollution concentration and the gradient direction in real time; and the main aircraft fuses all data to update global estimation, and dynamically generates an instruction for guiding the subordinate aircraft to move towards a pollution concentration gradient rising direction after identifying a pollution plume or a hot spot, thereby realizing active tracking and high-resolution surveying and mapping. According to the invention, the efficiency, precision and intelligent response capability of pollution monitoring are significantly improved, and accurate and adaptive tracking of a dynamic pollution field is realized.

The invention relates to the technical field of transformers, in particular to an oil-immersed power transformer which comprises a hollow rod, a first round rod, a first piston, a first spring, a cylinder, a second round rod, a second piston, a limiting block and a ventilation assembly. A hollow rod is fixedly connected to the diaphragm; a first round rod is slidably connected to the hollow rod. A first piston is fixedly connected to the first round rod and makes contact with the lower end of the hollow rod. A cylinder is fixedly connected to the box body; through cooperation of the hollow rod, the first round rod, the first piston, the first spring, the cylinder, the second round rod, the second piston, the second spring and the limiting block, pressure relief operation can be automatically completed when pressure in the transformer body is increased abnormally, and therefore the transformer body can be protected; and the transformer oil sprayed out at a high speed can be intercepted and prevented from being sprayed to the outside to pollute the environment, the intercepted transformer oil is gathered on the upper side of the diaphragm, manual collection of the transformer oil can be facilitated, and waste is avoided.

The invention belongs to the field of metal materials, and particularly relates to high-strength passenger car steel and a production method thereof.The steel plate is mainly suitable for manufacturing passenger car structural parts, the steel comprises the chemical components of C, Si, Mn, Al, Nb, V, Ta, Bi, Sb, Ni, Cr, Pt and Y, P is limited to be smaller than or equal to 0.015%, S is limited to be smaller than or equal to 0.005%, N is limited to be smaller than or equal to 0.006%, and the balance Fe and inevitable impurities. The steel plate is obtained by adopting hot rolling, EPS, continuous annealing and finishing processes, the processes of pickling and cold rolling are reduced, the production process is simplified, the production cost is reduced, and the environment is not polluted.

The invention provides a preparation method of 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride, which comprises the following steps: salifying 4-fluoro-3, 5-dimethylaniline serving as a substrate with concentrated hydrochloric acid, reacting with sodium nitrite to prepare a diazo solution, reducing the diazo solution into corresponding phenylhydrazine by using alkaline sodium sulfite as a reducing agent system, and reacting the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride with the diazo solution to prepare the 4-fluoro-3, 5-dimethylphenylhydrazine hydrochloride. And acidizing the 2, 5-dimethyl phenylhydrazine to obtain corresponding phenylhydrazine hydrochloride. According to the preparation method, sodium sulfite which is low in cost and easy to obtain is used as a reducing agent, the defects that metal residues are high, the environment is prone to being polluted and the raw material cost is high due to the fact that a metal reducing agent is adopted when phenylhydrazine hydrochloride is prepared in the prior art are overcome, the reaction is completed in a water phase, no organic solvent is adopted, and the concept of green chemistry is met; and the problems of complicated post-treatment and easy pollution caused by the adoption of an organic solvent can be effectively avoided.

The utility model relates to a pressure gauge, in particular to an anti-impact pointer pressure gauge. Comprising a pressure gauge body, a pointer is arranged on a movement shaft in the pressure gauge body, the pointer comprises a pointer body, a spring and a pointer tip, a mounting hole is formed in the middle of the pointer body, the pointer body is arranged on the movement shaft through the mounting hole, the spring is arranged between the pointer body and the pointer tip, and the pointer tip is arranged in the mounting hole. The two ends of the spring are fixedly connected with the needle tip and the needle body respectively. According to the anti-impact pointer pressure gauge designed in the scheme, when the pressure of a working medium is sharply reduced or increased and the point of the pointer impacts the stop pin on the dial, the spring deforms and unloads, and the pointer can be effectively prevented from deforming, being damaged and falling off. The pressure gauge does not need to be filled with damping liquid, so that the cost of the pressure gauge is greatly reduced, and the problem of environmental pollution caused by leakage of the damping liquid of the pressure gauge is solved.

The invention discloses a cleaning device for improving wafer surface cleanliness and a using method thereof, and relates to the technical field of semiconductor manufacturing, the cleaning device comprises a cleaning device main body, the bottom wall of the cleaning device main body is provided with a flushing liquid backflow assembly, and the flushing liquid backflow assembly comprises a liquid collecting tank installed on the bottom wall of the cleaning device main body; z-shaped filter plates which are arranged in a staggered manner are mounted in the liquid collecting tank; a first backflow pipe is installed on the back face of the liquid collecting tank in a penetrating mode, a third mixed-flow pump is installed at one end of the first backflow pipe, a second backflow pipe is installed at one end of the third mixed-flow pump, and a backflow box is installed at one end of the second backflow pipe in a penetrating mode; the bottom of the liquid collecting tank is inclined, the inner wall of the liquid collecting tank is made of polytetrafluoroethylene materials, and the inner wall of the liquid collecting tank is coated with a nanometer coating. By installing the flushing liquid backflow assembly on the bottom wall of the cleaning device body, the problems that in an existing cleaning device, the cleaning liquid recycling efficiency is low, impurity filtering is insufficient, the cleaning liquid waste treatment cost is high, and the environment is polluted can be solved.

The invention discloses a phosphogypsum-based filling material and a preparation method thereof, and belongs to the technical field of mine backfilling. The ardealite-based filling material is prepared from the following raw materials in percentage by weight: 60-70% of ardealite, 8-20% of fly ash, 2-8% of sulphoaluminate cement and 2-18% of slag powder. The invention also discloses a preparation method of the phosphogypsum-based filling material. The ardealite filling material disclosed by the invention realizes efficient resource utilization of a large amount of industrial solid wastes, and the performance of the ardealite filling material meets the technical specification requirements of mine engineering; the problems that a large amount of ardealite is piled up, the utilization rate is low, and the environment is seriously polluted are solved, and the problems that an existing filling material is high in raw material cost, complex in additive variety, high in additive amount, long in setting time, high in bleeding rate and the like are solved.

The invention discloses a fireproof and explosion-proof safety type transformer, and relates to the technical field of transformers, one side of the top end of an embedded fixing box is connected with an outer row fixing pipe in a penetrating manner, the top end of the inner side of the outer row fixing pipe is fixedly provided with a pressing spring, and the bottom end of the pressing spring is fixedly provided with an I-shaped clamping frame; a clamping sealing ring is fixed to the position, corresponding to the I-shaped clamping frame, of the inner side of the outer exhaust fixing pipe, a plurality of exhaust fixing holes are formed in the outer side end of the outer exhaust fixing pipe at equal intervals, and isolation double-layer sleeves are symmetrically welded to the top end of the inner side of the embedded fixing box. The situation that the environment is polluted due to the fact that transformer oil overflows when hot steam is exhausted is avoided, meanwhile, resources are recycled, resource waste is reduced, the transformer oil is supplemented in real time, stability of internal protection is guaranteed, meanwhile, an internal fire extinguishing component is used for directly conducting fire extinguishing treatment on the interior, and the environment is protected. And the condition of high-pressure deflagration and explosion caused by internal fire is avoided.

The utility model relates to the technical field of cutting saws, and discloses an outward-swinging precise digital display cutting saw for manufacturing a precisely-carved cast aluminum door, which structurally comprises a corner sawing machine, a saw blade, a cleaning device, an atomizing mechanism and a collecting box, and has the beneficial effects that the cleaning device is additionally arranged on the corner sawing machine, and a gear is driven to rotate by virtue of a motor; the gear rotates to drive two sets of racks at the upper end and the lower end of the gear to move synchronously, the triangular scraping plate and the wiping block which are installed at the bottom of the gear move synchronously, residual chippings and dust on the workbench are cleaned, follow-up manual cleaning work is avoided, the machining efficiency is improved, the working intensity of workers is reduced, and the working efficiency is improved. And then by means of operation of a water pump in the water tank in the corner sawing machine, water flow in the water tank can be discharged into a flow dividing pipe through a water inlet pipe and sprayed out through a plurality of atomization nozzles arranged on one side of the flow dividing pipe, dust falling treatment is conducted on chippings and dust collected in the collecting box, and the situation that the dust splashes and pollutes the environment can be avoided.

The invention discloses a bacillus M3 and an application thereof. The bacillus M3 is separated from an extremely polluted environment by adopting a gradient pressure screening method, has relatively strong heavy metal tolerance, can remove uranium in soil, is used for in-situ remediation of uranium pollution of soil, has the characteristics of greenness, environmental protection and no drug residue, is high in biological safety, can greatly reduce the remediation cost, and reduces the damage of a soil structure.

The invention relates to the technical field of laser spot welding machines, and provides a laser spot welding machine for mold machining, which comprises a workbench, a mounting frame is fixed on the rear side of the top wall of the workbench, a first electric sliding rail is fixed on the top wall of the mounting frame, a vertical plate is fixed on the top wall of a sliding block of the first electric sliding rail, and a second electric sliding rail is fixed on the side wall of the vertical plate. A cross beam is fixed to the side wall of a sliding block of the second electric sliding rail, a laser spot welding machine body is fixed to the front end of the cross beam, the outer side of a welding head of the laser spot welding machine body is sleeved with a protection cover, and the gas spraying and collecting assembly, the eye protection assembly, the translation lifting assembly and the purification assembly are arranged on the workbench. By means of the technical scheme, the problems that most welding equipment in the prior art does not integrate the protective gas injection function and the waste gas treatment function, the health of operators can be threatened, the environment can be possibly polluted, meanwhile, strong light, ultraviolet rays and infrared rays are generated during welding, and the operators are prone to visual damage in the welding process are solved.

The utility model discloses a biosafety cabinet capable of double-layer filtration, which comprises a cabinet body, an operation chamber is arranged in the cabinet body, and a bottom air duct is arranged at the bottom end of the operation chamber. By arranging the reducing pipe, the exhaust pipe, the exhaust outlet, the filter box, the exhaust filter, the air disc and the high alcohol, double-layer filtration of exhausted air is achieved, air can be exhausted into the reducing pipe through operation of the exhaust fan, airflow can be concentrated and pressurized through arrangement of the reducing pipe, meanwhile, the air is conveyed into the filter box, and the filtering effect is improved. The air disc divides air into a plurality of small bubbles and increases the contact area with the high-alcohol, the high-alcohol can kill bacteria in the air and adsorb particle dust and various suspended solids, then the air is conveyed into the air exhaust opening, secondary filtering is conducted when the air passes through the air exhaust filter, and the exhausted air is purified; therefore, the exhausted air does not carry germs, the environment is prevented from being polluted, and the use safety is improved.

The invention belongs to the technical field of lifting operation platforms, and particularly relates to a pushing chain type lifting operation platform which comprises a pushing chain lifting mast, the pushing chain lifting mast comprises a telescopic mast and a pushing chain driving system, and an operation platform is installed at the top end of the telescopic mast. According to the pushing chain type lifting operation platform, a variable frequency motor drives a pushing chain to conduct high-speed and constant lifting motion, a mast is vertically pushed and driven to ascend and descend, so that the operation platform on the top of the mast is driven to ascend and descend, the operation platform can stop at any height without sliding down, pure mechanical driving is adopted, and the risk of hydraulic oil leakage is avoided; and meanwhile, the problems that the transmission efficiency is low, the lifting speed is low, the speed is not constant, the descending speed is difficult to control, the stopping precision is low, and oil leakage possibly pollutes the environment are solved.

The invention relates to the technical field of oil well operation tools, in particular to a midway pressure test hydraulic oil drainage type tubing anchor and a using method thereof.The hydraulic tubing anchor comprises a center pipe, a cone connector, an anchor tile and a piston assembly, the cone connector is arranged at the top of the center pipe, and a sealing ring I is arranged between the cone connector and the center pipe for sealing; the center pipe is connected with an oil pipe through the cone connector, the anchor tile and the piston assembly are sleeved on the center pipe, the anchor tile is arranged between the cone connector and the piston assembly, one end of the anchor tile is provided with a cone hole matched with the cone connector, and the other end of the anchor tile is connected with the piston assembly. The oil drainage action can be completed by adopting a mode of directly pressing into the oil pipe, and any tool does not need to be put into the oil pipe; mainly solves the problem that in the operation process of an oil well, under the condition that a tubular column is not moved, the oil drainage function of the tubular column is realized, so that conventional well washing can be carried out, an oil tube and a sucker rod are cleaned together, and crude oil brought out and environment pollution caused by tube and rod lifting are reduced.

The invention discloses a Gordonia ovorans YDY-4 strain and an application of the Gordonia ovorans YDY-4 strain in degradation of n-hexadecane. The cholesterol-eating Gordonia sp. YDY-4 is named as the cholesterol-eating Gordonia sp. YDY-4, is preserved in the China Center for Type Culture Collection (CCTCC), and has the preservation number of CCTCC M 20251290, and the cholesterol-eating Gordonia sp. YDY-4 is named as the cholesterol-eating Gordonia sp. YDY-4 and is preserved in the China Center for Type Culture Collection (CCTCC). The Gordonia ovorans YDY-4 provided by the invention has the capability of degrading n-hexadecane under the condition that the pH (Potential of Hydrogen) is 7.0 to 9.0, and can grow at 28 to 32 DEG C. The Gordonia ovorans YDY-4 provided by the invention has relatively strong environmental adaptability and n-hexadecane degradation capability, and provides a basis for bioremediation of petroleum polluted environment and application of a microbial enhanced treatment technology.

Disclosed in the present invention is a preparation method for a water treatment agent produced from red mud of an aluminum factory, comprising: first, dealkalizing red mud slurry by means of a filter pressing process; then drying same and crushing same into powder; adding to a stirring tank the dry red mud powder to be heated and dissolved, and adding an excess of hydrochloric acid to obtain a chlorine salt material; then adding alkali to the chlorine salt material to adjust the pH value to weak acid; and finally spray-drying the water treatment agent to obtain a powdery preparation. The water treatment agent prepared in the present invention has excellent effects of flocculation and COD and ammonia nitrogen removal, and can effectively solve the problem that red mud waste residues stacked in aluminum factories cause environment pollution.

The invention relates to the technical field of civil air defense building ventilation equipment, in particular to efficient-purification and self-cleaning civil air defense building ventilation opening protective door equipment which comprises a door frame, a door body, a driving unit, a sensing system, a purification device, a self-cleaning execution unit and a control unit. The sensing system comprehensively collects environment and equipment data, and the control unit adopts a weighted fusion algorithm to calculate a comprehensive pollution index and determine a pollution level; the protection and ventilation efficiency coefficients under different door body opening and closing angles are calculated based on fluid analogue simulation; dynamically solving the optimal opening and closing angle of the door body and the optimal operation parameters of the purification device through a multi-objective optimization algorithm; and the self-cleaning effect is intelligently triggered and verified according to the filter screen state and the pollution level. Self-adaptive intelligent regulation and control of the protective door in a complex pollution environment are achieved, the safety protection and ventilation efficiency is effectively balanced, and the purification capacity and the automatic maintenance level are improved.

The invention discloses a liquid treatment agent for red mud harmless treatment and a preparation method thereof.The liquid treatment agent comprises a treatment agent A and a treatment agent B. The treatment agent A is formed by mixing hydrochloric acid and sulfuric acid, and the treatment agent B is prepared from malic acid, acetic acid, phthalic acid monoester, a solvent and an adsorbent, the mass fraction of the malic acid is 20%-40%, the mass fraction of the acetic acid is 20%-40%, the mass fraction of the phthalic acid monoester is 15%-25%, the mass fraction of the solvent is 5%-15%, and the mass fraction of the adsorbent is 5%-15%. The red mud is subjected to primary treatment by using the liquid treatment agent A, and then the red mud subjected to primary treatment is treated again by using the liquid treatment agent B, so that the alkalinity of the red mud can be effectively reduced, and various heavy metals, fluorides, radioactive elements and trace toxic elements in the red mud can be effectively removed; the environment pollution caused by the loss of the harmful substances is avoided, so that the innocent treatment of the red mud is realized.

The invention discloses a device for measuring the solid material level in a container in a non-direct contact manner, which is arranged on a tank body of a sand collecting tank and comprises a series of temperature probes, signal transmission lines, a main transmitter, a main signal transmission line and a main monitor, and the signal transmission lines, the main transmitter, the main signal transmission line and the main monitor are respectively arranged corresponding to the different temperature probes. The device is suitable for detecting and transmitting material level signals of solid sand in the sand collecting tank after separation and collection at the seabed, the purposes of online detection and control are achieved, the sand level including the liquid level in the container sand collecting tank or the sand storage tank can be effectively detected in real time, and it is ensured that the sand removing operation can be normally carried out. The system has the advantages of no environmental pollution, high monitoring efficiency and strong anti-interference capability, and provides important technical support for long-period seabed oil and gas exploitation, especially deep sea and open sea oil and gas exploitation.

The present application relates to a microbial grouting treatment soft foundation construction structure and its construction method. The scheme includes the following steps: improving the shear strength and bearing capacity of the soft foundation and reducing the compressibility and permeability of the foundation soil by setting up heap loading, microbial high-pressure rotary jet piles and microbial tree root steel pipe piles; draining the moisture in the foundation and eliminating or weakening the liquefaction characteristics of the foundation soil by heap loading in conjunction with drainage steel pipes, mesh water collection pipes and pumps; and improving the cooperative working ability of the microbial high-pressure rotary jet piles and the soil between the piles by setting up a microbial sand solidification layer, ensuring deformation coordination and preventing uneven settlement. The grouting material adopts a two-component microbial grouting material, which is safe, clean and environmentally friendly. The microbial induced calcium carbonate precipitation material has the advantages of fast speed and high efficiency. The induced precipitation of calcium carbonate can be completed in about a few hours, which greatly shortens the construction period and will not cause sewage to flow across the land and pollute the environment.

The invention belongs to the field of microbial agents, and particularly relates to a microbial composite agent for degrading herbicides and a preparation method of the microbial composite agent. The preparation method of the microbial complex microbial inoculant comprises the following preparation steps: mixing bran hydrolysate, peat soil and diatomite, sterilizing, adding a protective agent and a complex flora suspension in a sterile environment, uniformly mixing, kneading and forming, preparing into slices, naturally air-drying, and crushing to obtain the microbial inoculant, and uniformly mixing the microbial agent with the adsorbent, the surfactant and the nutrient substances to obtain the microbial complex microbial inoculant. According to the invention, domesticated microorganisms form a composite flora to prepare the microbial agent, and the composite flora exerts unique degradation capability and generates synergistic effect, so that the herbicide can be degraded more comprehensively and efficiently, and the proportion of each microorganism, an adsorbent, a surfactant and other components in the microbial agent can be adjusted according to different herbicide types and polluted environments; and efficient degradation of specific herbicides is realized.

The invention discloses a method for improving uranium immobilization by bacillus by using an extracellular polymeric substance, and belongs to the field of environmental engineering, the bacillus licheniformis X-113 is separated from a uranium-polluted environment and is preserved in the China Center for Type Culture Collection (CCTCC) with the preservation number of CCTCC NO: M 20251207, and the bacillus licheniformis X-113 is preserved in the China Center for Type Culture Collection (CCTCC) with the preservation number of CCTCC NO: M 20251207. By optimizing the EPS culture conditions, the fixing capacity of the EPS-Bacillus sp.X-113 on uranium is remarkably enhanced compared with that of Without EPS-Bacillus sp.X-113, and the fixing capacity of the EPS-Bacillus sp.X-113 on uranium is remarkably enhanced compared with that of Without EPS-Bacillus sp.X-113. And numerous functional groups in EPS, such as carboxyl, hydroxyl, amino and the like, can be subjected to complexation, ion exchange and other reactions with uranium ions to fix the uranium ions, so that the uranium fixation of the bacillus is greatly improved.

The utility model relates to the technical field of receiving and sending ball valve residual liquid cleaning, and discloses a spherical pig receiving and sending ball valve residual liquid recovery device which comprises a blow-off pipe, a gas blocking oil conveyor and an adsorption tank, one end of the blow-off pipe is connected with the gas blocking oil conveyor, an exhaust pipe is arranged on one side of the gas blocking oil conveyor, an oil discharge pipe is arranged at the bottom end of the gas blocking oil conveyor, and the adsorption tank is connected with the blow-off pipe. One end of the oil discharge pipe is connected with a return pipe, one end of the return pipe is connected with one end of a discharge port of the ball receiving and sending valve, one end of the exhaust pipe is connected with an adsorption tank, and an exhaust valve is arranged at the top of the adsorption tank. The personal injury caused by residual liquid volatilization in the manual purging process is avoided, the safety is improved, and meanwhile, the purged nitrogen is adsorbed and purified, so that the environmental pollution is avoided.

The vegetable cultivation box comprises a water storage box with an opening in the upper end, sliding holes are downwards formed in the four corners, penetrating through the upper end of the outer wall of the water storage box, of the water storage box, first fixing holes are inwards formed in the positions, above the periphery of the outer wall of the water storage box, of the sliding holes, and each sliding hole is in sliding connection with a sliding rod; a plurality of second fixing holes are inwards formed in one side of the outer wall of each sliding rod, each first fixing hole is detachably connected with a plug pin, a rotating assembly is arranged at the upper end of each sliding rod, a planting box with an opening in the upper end is arranged at the upper end of each rotating assembly in a matched mode, and a plurality of water absorption rods are detachably connected to the bottom of the inner wall of each planting box; slide fasteners are slidably connected to the inner and outer sides above the left and right sides of the planting box in a matched manner, and a partition plate is arranged between the inner walls of the two slide fasteners in a matched manner. The water collecting tank does not need to be treated frequently, water cannot flow everywhere, the environment cannot be polluted, meanwhile, watering from the upper surface of soil is not needed, and soil hardening is avoided.

The invention discloses a secondary pollution prevention structure for powder bagging, and relates to the technical field of packaging equipment, the secondary pollution prevention structure comprises a discharging transfer bin, a conical bin, a dust recovery assembly and an air bag pressing assembly; the conical stock bin is fixed to the lower end of the discharging transfer bin, a discharging pipe is arranged at the output end of the conical stock bin, the dust recycling assembly comprises a shell, an exhaust pipeline and a dust suction machine, the shell is fixed to the outer walls of the conical stock bin and the discharging pipe, an air exhaust cavity is formed by the shell and the outer walls of the conical stock bin and the discharging pipe, and the dust suction machine is arranged in the air exhaust cavity. The air exhaust pipeline is communicated with the air exhaust cavity, the dust collector is connected with the end, away from the shell, of the air exhaust pipeline, the air bag pressing assembly comprises a fixing plate and an air bag, the fixing plate is arranged on the outer wall of the conical stock bin, and the air bag is fixedly arranged on one edge of the fixing plate or the outer wall of the discharging pipe. The powder bagging device can prevent powder from overflowing from a bag opening to pollute the environment during bagging.