84results about How to "Replace regularly" patented technology

The invention relates to an underground water in-situ restoration system which is characterized by comprising a vertical impermeable wall arranged along the periphery of the polluted zone, wherein the vertical impermeable wall is in a semi-closed structure; the opening of the vertical impermeable wall is provided with a multi-treatment-unit reaction grid; the multi-treatment-unit reaction grid is arranged on the front edge downstream the underground water pollution stream and is perpendicular to the underground water flow; and the upstream and downstream of the multi-treatment-unit reaction grid are respectively provided with an underground water monitoring well for determining the change conditions of water level and water quality before and after underground water restoration. The system can overcome the defects of narrow restoration range, high clogging tendency, single treated pollution component and the like of the traditional continuous reaction wall in engineering application, can effectively restore underground water pollution streams with multiple pollutant components and complicated underground flow field, and can monitor the dynamic changes of water level and water quality of underground water in real time, thereby periodically cleaning and replacing the reaction medium in the treatment unit reaction grid.

The present invention belongs to the technical field of tree transplanting and maintaining, specifically an integrated device for landscape tree/seedling maintaining. The device includes an aboveground device and an underground device, wherein the underground device contains a U-shaped permeating pipe and an underground water storage device. The U-shaped permeating pipe is buried close to the location of the root system of the landscape trees/seedlings with one end of the U-shaped permeating pipe connected to the buried underground water storage device and the other end of the U-shaped permeating pipe stretching out of the ground. The aboveground device contains an infiltrating and irrigating bag and a three-way pipe, wherein the infiltrating and irrigating bag covers the base part of a tree trunk and is connected with the other end of the U-shaped permeating pipe by the three-way pipe. The landscape tree/seedling maintaining integrated device has various maintaining functions such as supplying water and medicine, preserving moisture and temperature, preventing transpiration of branches and trunks, supplementing the root system with water, draining off water for ventilation, and automatically accumulating rainwater.

The invention relates to a complete water dispenser of a water purifier, which comprises a shell, a hot tank and/or cold tank, an outlet faucet and a control device, wherein a normal-pressure water bag is arranged in the water dispenser; the water inlet of the normal-pressure water bag is connected with the water outlet of a magnetic valve or electric valve; the water inlet of the magnetic valve or electric valve is connected with a water outlet of the water purifier by a first water pipe; the control device controls the opening and closing of the magnetic valve or electric valve according tothe detection signals of an upper water level detection device and a lower water level detection device; and the water purifier is a water purifier of which the outlet water bears certain pressure, such as a reverse osmosis water purifier. In the invention, the linkage between the water dispenser and the water purifier is built by a pressure signal in interconnected water pipes. As the water in the normal-pressure water bag is isolated from the outside air, secondary pollution is avoided; the normal-pressure water bag can be washed and changed periodically; and the use and manufacturing cost of the normal-pressure water bag are lower than those of a pressure water tank.

A kitchen oil fume purification method. The oil fume is fully washed by the degreasing and cleaning liquid in the cleaning tower, and then sent to the electric dust removal tower to remove dust and purify harmful gases, and then the activated carbon absorption tower absorbs the irritating gas to purify the oil fume. . The invention comprehensively utilizes chemical and physical principles to purify kitchen oil fumes, has a simple structure, can be used continuously, does not require frequent maintenance, and has a long service life. The cleaning liquid in the circulating water liquid medicine pool can be replaced regularly, and the purification effect is good.

The invention provides a seal and an application method thereof and belongs to the technical field of seals. The seal comprises a driving assembly, a spring, a movable component, an overturning mechanism, a sliding groove, a seal body and red ink paste. The driving assembly is connected with the spring. The spring is connected with the movable component. The driving assembly is connected with a shell. A positioning rod of a driving wheel is in sliding connection with the shell. Positioning rods are detachably connected with a seal base. The driving wheel is in sliding connection with the sliding groove. Through the unique overturning mechanism in the seal, overturning can be achieved while the driving wheel moves in the sliding groove, and accordingly, the seal is driven to overturn. According to the seal and the application method thereof, the overturning mechanism is adopted in the seal, a seal using person can be effectively prevented from using the seal illegally without approval,and the seal application safety is improved.

The invention relates to a communication technology based safe elliptic curve cryptoguard method for a train operation control system(CBTC); on the basis of the safety threat in the wireless environment and the feasibility of demonstrating the use of the elliptic curve cryptosystem (ECC) in the CBTC wireless certification, the invention designs an ECC algorithm protection method aiming at the safety of the CBTC system, which mainly includes three major steps that: in the invention, the Weil theorem is adopted to calculate the order of equation of the ECC, the big prime number is judged by utilizing the inverse proposition of the Fermat small theorem and the pseudoprime number, the construction of the safe elliptic curve cryptosystem is completed by mainly utilizing the Markov predictive matrix; and then the arrangement of the ECC cryptosystem in the CBTC system is designed and completed; finally the ECC code based bi-directional certification in the CBTC wireless environment which can resist the malicious AP attacks is created. The ECC cryptosystem of the invention has the advantages of periodically changing, ensuring safety and adopting the bi-directional certification; moreover, the certification time meets the system standard.

The invention relates to a filter-type electrochemistry air sterilization and purification device.The filter-type electrochemistry air sterilization and purification device comprises a shell, a power source, an electrolyzed water generation module and air drafting devices for driving air to flow through the electrolyzed water generation module.The power source is connected with a positive electrode connecting end and a negative electrode connecting end which are connected to the electrolyzed water generation module, the electrolyzed water generation module is installed in the shell, an air inlet and an air outlet are formed in the electrolyzed water generation module, and outside air is led into the electrolyzed water generation module by the air drafting devices through the air inlet, and is processed through the electrolyzed water generation module and discharged through the air outlet.According to the filter-type electrochemistry air sterilization and purification device, the air is led into the electrolyzed water generation module through the air inlet in the electrolyzed water generation module by the air drafting devices, is in contact with active oxygen substances generated in the electrolyzed water generation module and then is discharged from the air outlet, sterilization and purification are achieved, indoor objects, plants, persons and the like are not damaged, sterilization and purification can be carried out in the indoor movement space with persons, and the elimination efficiency of microorganisms can be 99% or above.

The invention discloses a long-term preservation method of rice blast strains. According to the method, filter paper serves as a preservation medium and long-term preservation of the rice blast strains is realized. The method comprises the following implementation steps: 1) preparing a corn flour straw agar culture medium; 2) placing a filter paper piece on a solidified corn flour straw agar culture medium flat plate; 3) inoculating the activated rice blast strains to the flat plate; 4) taking out the filter paper full of the rice blast strains; 5) performing drying treatment on the filter paper in a super-clean bench; and 6) preserving the filter paper at -20 DEG C. The method is simple, lower in pollution and long in preservation cycle, the activation times are reduced, and the characters of the strains are stable; meanwhile, the preservation space is saved and the strains are convenient to activate.

The invention discloses a household air purification device, and relates to the technical field of air purification equipment. The household air purification device comprises a shell; the shell comprises an air inlet arranged on a front wall, an air outlet arranged on a rear wall and a filter net mechanism and a fan arranged in an inner cavity; the filter net mechanism is vertically arranged between the air inlet and the air outlet; the fan is located on the rear side of the filter net mechanism; the shell further comprises a protection cover plate located on the outer side of the air inlet; a clearance is preserved between the protection cover plate and the air inlet; a camera is arranged on the top of the shell; and an air outlet grid plate is arranged on the air outlet. The household air purification device is especially applicable to air purification in a room of a child; and meanwhile, the household air purification device has a real-time monitoring function, so that safety and stability are high.

The invention discloses a fixation and encapsulation pole for an all-condition intelligent vacuum circuit breaker. The fixation and encapsulation pole comprises an insulating encapsulation body and an insulating pull rod. A vacuum arc-extinguishing chamber is fixed and encapsulated in the insulating encapsulation body. The movable end of the vacuum arc-extinguishing chamber is connected with a sliding connecting piece. The insulating pull rod is located at the lower portion of the insulating encapsulation body. One end of the insulating pull rod is connected with the movable end of the vacuum arc-extinguishing chamber which is fixed and encapsulated, and the other end of the insulating pull rod is connected with an operating rod which extends out of the insulating encapsulation body. The fixation and encapsulation pole has the advantages of being simple and compact in structure, low in cost, wide in application range, capable of improving reliability and safety and the like.

The invention discloses a vegetable and fruit storage refrigeration house based on solar energy power supply. The structure of the vegetable and fruit storage refrigeration house is more reasonable, the solar energy at the arranging position of the refrigeration house can be sufficiently utilized, and a horizontal movement door can reliably slide. A refrigeration house body comprises a bottom terrace and mutually-connected heat preservation wall plates. A movable solar energy power supply mechanism arranged on the top of the top heat preservation wall plate is further included. The solar energy power supply mechanism is connected with a storage battery and comprises a movable base, a first lead screw base fixed to the movable base, a first lead screw located in the first lead screw base, afirst nut matched with the first lead screw, a first motor driving the first lead screw, a second lead screw base fixed to the first nut, a second lead screw located in the second lead screw base, asecond nut matched with the second lead screw, a second motor driving the second lead screw, a telescopic rod fixed to the second nut, an installing support and a universal joint connecting the telescopic rod with the installing support.

The invention discloses a cleaning device for an elevator handrail, comprising a cleaning mechanism and a wiping mechanism. The cleaning mechanism includes a clamping mechanism, a sponge (10), a water tank (5) and a cleaning liquid pipe. The clamping mechanism includes two Symmetrical arc-shaped clamping piece (1), two symmetrical connecting rods (2), driving rod (4) and supporting rod (3); the supporting rod (3) is fixed on the water tank (5) and connected with the driving rod (4) Threaded connection; one end of the connecting rod (2) is hinged to the middle of the clamping piece (1), and the other end is hinged to the support rod (3); one end of the driving rod (4) is hinged to one end of the clamping piece (1), and the other end It is threadedly connected with the support rod (3); the sponge (10) is set on the inner wall of the clamp (1); the cleaning liquid pipe is provided with a cleaning liquid pump, the inlet of the cleaning liquid pipe is connected with the water tank (5), and the outlet is facing the sponge (10). The structure of the device is simple, so that the handrail is fully in contact with the cleaning mechanism, and the cleaning effect is better.

The invention discloses a self-pressurization type hydraulic oil tank of a loading machine. The self-pressurization type hydraulic oil tank comprises an oil tank body, an oil outlet pipe and an oil returning pipe, wherein the oil outlet pipe and the oil returning pipe are communicated with the oil tank body. A pressurization filter assembly and a manual unloading valve are arranged at the top of the oil tank body and communicated with air above oil in the oil tank body. The self-pressurization type hydraulic oil tank has the advantages that the problem that a hydraulic system of an open type oil tank is polluted by the external environment is effectively solved, and the problems that an oil adding cover of an existing pressurization oil tank is difficult to open, and a lifting movable arm has potential safety hazards can further be solved; in addition, operation is easy and convenient, and the manufacturing cost is low.

A rural closestool device based on compound enzyme decomposition belongs to the field of agricultural living facilities. A sewage drainage outlet is formed in a side surface of the closestool main body, a sewage drainage device is arranged at the sewage drainage outlet, a motor is fixedly connected with a stirring device, the stirring device rotatably penetrates into the closestool main body, andthe dehumidifying device is communicated with the inside of the closestool main body; a signal output end of the photoelectric switch is connected with a signal input end of a time relay, the signal output end of the time relay is connected with the signal input end of the motor, a temperature and humidity sensor is fixed on a rear side plate of the closestool main body, a temperature signal output end of the temperature and humidity sensor is connected with a temperature signal input end of a temperature and humidity controller, and the temperature signal output end of the temperature and humidity controller is connected with the signal input end of an electric heating piece; the humidity signal output end of the temperature and humidity sensor is connected with the humidity signal inputend of the temperature and humidity controller, and the humidity signal output end of the temperature and humidity controller is connected with the signal input end of the dehumidifying air pump. Therural closestool device disclosed by the invention is used in rural areas, remote mountain areas and the like.

The invention belongs to the technical field of preparation of mattresses and particularly relates to a preparation method of a sponge-palm fiber mattress provided with a storage layer. The method comprises steps as follows: S1, palm fiber is paved layer by layer, tightly sewn and covered, a palm fiber mattress layer is formed, and multiple single-layer sponges are glued and stacked to form a sponge layer; S2, herbal medicines, fragrance and substances with other effects are put in a storage bag, and the storage layer is formed; S3, the palm fiber mattress layer and the sponge layer formed inS1 and the storage layer formed in S2 are connected through buckles to form the sponge-palm fiber mattress; S4, the sponge-palm fiber mattress is subjected to surface packaging treatment. The problemsthat existing palm fiber mattresses have poor softness and sponge mattresses are easy to deform after long-term use can be solved, substances with special functions of promoting sleep, relieving andthe like can be added, and the sponge-palm fiber mattress is easy to popularize.

The invention relates to the technical field of electric dust precipitation, and specifically relates to an efficient self-cleaning wet electric dust precipitation system. The system comprises a towerbody, an air inlet, an air outlet, a dust outlet, a water pipe, an atomization spray nozzle, a dust collection plate dust clearing device and a dust collection plate; a top cover over the tower bodyis provided with the air inlet, the bottom of a side face of the tower body is provided with the air outlet, and a bottom cover of the tower body is provided with the dust outlet; a mist spraying device is arranged at an upper pend of the tower body and located above the dust collection plate, the mist spraying device comprises the water pipe and the atomization spray nozzle; the dust collection plate is arranged in the tower body, and the dust collection plate dust clearing device is arranged in the tower body; the dust collection plate dust clearing device comprises a dust removal brush, a cross bar, a telescopic rod, a rotating mechanism and a motor, wherein the rotating mechanism is connected with the motor, the telescopic rod is connected with the rotating mechanism, a top end of thetelescopic rod is fixedly connected with a middle part of the cross bar, and the dust removal brush is fixedly mounted on the cross bar. Thus, water for cleaning is reduced, moreover, each corner of the dust collection plate can be cleaned. So, the efficient self-cleaning wet electric dust precipitation system has the advantages of being economical, saving, efficient and environmental-friendly, and so on