142results about How to "Extended replacement time" patented technology

The invention discloses an insulation monitoring and life prediction method of a cross linked polyethylene cable. One of the leakage current, insulation resistance and dielectric loss angle of the cross linked polyethylene cable serves as detected amount alpha, and the detected amount alpha and the mutation rate beta of the detected amount alpha are computed in real time, so monitoring of a cable insulation degradation process is realized. The daily average, month average and year average of the detected amount alpha and the mutation rate beta of the detected amount alpha are obtained by computation, and the insulation life of the cable is computed according to a formula. The insulation monitoring and life prediction method of the cross linked polyethylene cable has the advantages that monitoring of the cable insulation degradation process can be realized, the service life of cable insulation can be quantitatively predicted, and the utilization rate of the cable is improved.

The invention discloses an air purifying device which comprises a shell, an air blower, a filtering layer and at least two absorption layers, wherein the shell is a sealed device with an air inlet and an air outlet; the filtering layer, the absorption layer and the air blower are sequentially arranged in the shell, and are sequentially arranged in a direction from the air inlet to the air outlet; and the adjacent absorption layers are oppositely and fixedly arranged in the shell in a staggered way. The air purifying device can be used for effectively purifying air; the replacing time of the absorption layers is prolonged; and the purifying efficiency can be improved.

The invention discloses an air filter, which consists of an air inlet pipe, an air inlet pipe of an engine, a filter element, an upper shell and a lower shell of the air filter. The upper shell and the lower shell of the air filter are abutted to form a shell of the air filter, and the filter element is fixed at the abutted part of the upper shell and the lower shell of the air filter, wherein an open pore of the upper shell of the air filter is communicated with the air inlet pipe of the engine, and an open pore of the lower shell of the air filter is communicated with the air inlet pipe. The air filter is characterized in that the abutted surface of the upper shell and the lower shell of the air filter is an inclined plane, the included angle of the abutted surface and the horizontal plane is alpha, and the side wall of the upper shell of the air filter is vertical to the abutted surface. The air filter has the advantages that the air filter can avoid blockage of a bent upper part on the side wall of a vehicle body, is favorable for assembly and disassembly of the upper shell of the air filter, so as to replace the filter element conveniently; at the same time, the air filter improves filter area of the filter element, reduces air resistance in the air filter, improves air inlet efficiency, prolongs the service life of the filter element, and prolongs the replacement time of the filter element.

The invention relates to a gas-solid separation ceramic film and a preparation method thereof, belonging to the technical field of high temperature dedusting. Under extremely severe working conditions like high temperature and high pressure, a ceramic film supporting body and a film suffer from brittle rupture due to poor toughness of materials. According to gas-solid separation ceramic film modification methods in the invention, a small amount of micrometer toughening aids like zirconia powder, alumina silicate fiber and mullite are added into raw materials used for preparation of a ceramic film supporting body and a small amount of nanometer toughening aids like zirconia are added into raw materials used for preparation of a gas-solid separation film, so the toughness of the gas-solid separation silicon carbide ceramic film can be effectively improved; and with the two modification methods, on the premise that each excellent performance of the gas-solid separation ceramic film is not reduced, the toughness of the gas-solid separation ceramic film is improved and does not suffer brittle rupture and the like under severe working conditions.

The invention discloses a new energy powered all-weather air purifying device. The new energy powered all-weather air purifying device comprises a mounting plate, a connecting plate, a shell, an air purification filter screen, a hole hood, an activated carbon filter screen, an HEPA filter screen, screw rods, nuts, round holes, straight slots, first springs, pressing plates, round bars, leaf springs, clamping blocks, a sucking pump, a suction pipe, an exhaust pipe, a cavity, short pipes, a round tube, a second spring, a piston, a piston rod, a protective cover, fixed rods, a solar cell panel, arubber gasket, a wind power generation device, a cylindrical shell, a power generator, a rotary shaft, fan blades, a first connecting pipe, a second connecting pipe, a solenoid valve, an air outlet hose, a spray head, mounting holes, a wind-solar complementary controller, a storage battery and a guide sleeve. The new energy powered all-weather air purifying device drives the piston and the pistonrod through air flow formed by purified air to move the protective cover, so that the solar cell panel can be covered by the protective cover in rainy and strongly windy weather and be exposed in theair in clear weather.

The invention discloses a fresh air machine with a filter screen being convenient to renew. The fresh air machine comprises a shell body, a fan, an unwinding device, a winding device and the filter screen. An air inlet communicating with the outside world and an air outlet communicating with indoor space are formed in the shell body; the fan is arranged in the shell body and used for blowing the air in the outside world into the indoor space; the unwinding device and the winding device both are movably arranged on the shell body; the filter screen is arranged in a tensioning mode, one end of the filter screen is wound on the unwinding device, and the other end, between the unwinding device and the winding device, of the filter screen is connected with the winding device; and a filter part which can shield the air inlet or the air outlet is formed in the position, between the unwinding device and the winding device, of the filter screen. By matched using of the unwinding device and the winding device, the filtering part, used for shielding the air inlet or the air outlet, of the filter screen of the fresh air machine of the structure can be renewed without the need of replacing the whole filter screen, so that the efficiency of renewing the filter part is improved, and the replacing time of the whole filter screen is prolonged.

The invention belongs to the technical field of cable materials, and provides a radiation-proof cable. The radiation-proof cable includes a cable external structure, a cable internal structure, and a filling layer. The arrangement sequence is the inner structure of the cable, the filling layer and the outer structure of the cable. The object of the present invention is to provide a radiation-proof cable, which has the functions of high temperature resistance and radiation protection.

A chopper mechanism for chopping stalk-like plant wherein the chopper mechanism includes a plurality of chopping elements that are removably mounted on the pair of chopper drums via associated holders. The chopping elements are mounted on the chopper drums circumferentially spaced apart and define a predetermined radial angle (α) therebetween. Each of the chopping elements having a pair of substantially parallel cutting edges spaced apart by substantially parallel mounting surfaces. One of the cutting edges is selectively engaged in the chopping while the other cutting edge is enclosed within the holder. The parallel cutting edge of the chopping elements facilitates in reversing each chopping element depending on the degree of abrasion of the cutting edge.

The invention discloses a rapier loom edge fabric yarn guide device which comprises a creel platform and a threading plate. The creel platform is horizontally arranged, multiple yarn bars used for inserting cheeses are arranged on the upper end face of the creel platform, the bottom ends of the yarn bars penetrate through the creel platform, hollow yarn guiding channels are formed in the yarn bars, a yarn inlet is formed by each yarn guiding channel at the vertex of the corresponding yarn bar, and a yarn outlet is formed in the portion, on the lower portion of the creel platform, of the bottom end of each yarn bar; tension-regulating devices are arranged on the edges of the lower end face of the creel platform, one side, provided with the tension-regulating devices, of the creel platform extends to form elastic flakes, the number of the tension-regulating devices and the number of the elastic flakes are the same as the number of the yarn bars, and yard guides are arranged at the ends of the elastic flakes; waste selvage yarns penetrate through the hollow yarn guiding channels and then sequentially pass through the tension-regulating devices, the yarn guides and the threading plate, the problems that before the device is used, the waste selvage yarns need to be wound on a waste selvage cylinder in advance, and tension of waste selvage warp becomes small with usage of the waste selvage yarns are solved, and the advantages that the tension of the waste selvage warp is balanced, and the waste selvage warp is not prone to breaking are achieved.

The invention relates to a low-power-consumption intelligent door lock. The low-power-consumption intelligent door lock comprises a door lock control MCU, a capacitance touch keyboard, a fingerprint sensor, a non-contact IC card antenna, a BLE module, a voice playing module, an OLED display screen, a door lock motor driving module, a battery capacity monitoring module and a door handle switch sensor, and further comprises a loudspeaker, a door lock motor and a battery. A low-power-consumption standby method comprises the steps that (1) the door lock is closed; (2) after 5 seconds, the BLE module, the voice playing module, the OLED display screen, the door lock motor driving module and the battery capacity monitoring module are turned off, and the capacitance touch keyboard, the fingerprintsensor and the non-contact IC card antenna are reserved to be turned on; (3) when the door lock control MCU monitors the situation that the door handle switch sensor does not transmit a signal for continuous 48 hours, the capacitance touch keyboard, the fingerprint sensor and the non-contact IC card antenna are turned off; (4) during door opening, the handle switch sensor transmits the signal tothe door lock control MCU, and the capacitance touch keyboard, the fingerprint sensor and the non-contact IC card antenna are turned on; and (5) the door lock is opened.

The invention discloses a rear clean-up scraper for a land leveler. The rear clean-up scraper for the land leveler comprises a mounting seat plate (1) and a four-bar linkage connected with the mounting seat plate (1); the four-bar linkage is driven by an oil cylinder (4) and connected with a gear rack (5); the gear rack (5) is fixed on a gear seat (6), and a clean-up scraper (12) is fixed to the gear seat (6) through a mounting plate; and the four-bar linkage drives the entire clean-up scraper (12) to move up and down under the telescopic action of the oil cylinder (4). According to the rear clean-up scraper for the land leveler, the two-times leveling of the land leveler can be realized through a single trip, the working efficiency is improved, the replacement time of a shovel blade is prolonged and at the same time, larger stones with irregular particle sizes on the surface are cleaned up, the leveling quality is improved, and the scratches on tires of road driving equipment are reduced.

The invention discloses a film for fixing retention needles and retention tubes, which comprises a supporting layer and a fixing film, wherein the supporting layer can be conveniently peeled off; a buffer water-absorption pad is arranged between the supporting layer and the fixing film; and the buffer water-absorption pad is provided with an anti-adhesion film (or special materials are not provided with an anti-adhesion film) and a sight hole are arranged on the buffer water-absorption pad. The buffer water-absorption pad is arranged between the supporting layer and the fixing film to form a sandwich structure, thereby preventing the fixing film with adhesive face from directly contacting the eyelet of the retention needle, and the film has the functions of buffering, water absorption and perspiration absorption, thereby greatly avoiding infections and phlebitis. In addition, after the film is fixed on the skin, since the buffer pad or functional pad is made of soft material, the comfort of the patient can be enhanced, and the film can not easily fall off.

The invention discloses a preparation method of coal-based agglomerated activated carbon having high adsorbability and high bulk specific weight. The preparation method comprises the following steps that non-caking coal and strong caking coal are used as raw materials to perform coal blending, the coal is mixed with asphalt and a strong alkaline compound, and smashing is performed to obtain raw material coal, wherein the raw material coal contains, by total weight, the non-caking coal 80-90%, the strong caking coal 5-15%, the asphalt 3-7% and a strong alkaline compound 0.2-1%; the raw material coal is briquetted, formed and granulated to obtain coal granules; the coal granules are subjected to oxidation treatment, carbonization treatment and activation treatment so as to produce the activated carbon. The preparation method utilizes a certain amount of non-caking coal and strong caking coal for coal blending to prepare the activated carbon, so that the activated carbon products also keep higher adsorbability while having high bulk specific weight, and the problem that the adsorbability and the bulk specific weight of the activated carbon are difficult to consider when the coal-based agglomerated activated carbon is prepared by adopting a traditional method is solved.

The invention relates to a novel tool of a tire crusher, which is mainly used for cutting waste tires into blocks. The tool comprises two shaft levers (1) which are arranged in parallel; a plurality of blades (2) are tightly sleeved on each shaft lever (1); each blade (2) comprises a blade body (2.1) and blade teeth (2.2) arranged on the outer edge of the blade body (2.1). The tool is characterized in that the blade teeth (2.2) of the plurality of blades (2) are in helical arrangement on the shaft levers (1), and the blades (2) on the two shaft levers (2) are in bilateral symmetry arrangement. The tool has the advantages of small contact area of blade edge when the tire is cut, high cutting efficiency, replaceable blade teeth of the blades, and long service life of the blades.

The invention discloses a novel sawing machine blade connection structure and a manufacturing method thereof and aims at solving the problems that the blade is not firmly fixed, and spare parts, such as a saw plate are short in service life and poor in production continuity. The novel sawing machine blade connection structure comprises a saw plate arranged on a main shaft of a sawing machine; the novel sawing machine blade connection structure is characterized in that the saw plate comprises a man saw plate and an auxiliary saw plate; the main saw plate is arranged on the main shaft of the sawing machine through a main shaft connection through hole; a shaft neck shaft sleeve is arranged on a saw plate shaft neck of the main saw plate; the auxiliary saw plate is connected with the shaft neck shaft sleeve arranged on the saw plate shaft neck of the main saw plate through a shaft sleeve sink hole; a sawing machine blade is arranged between the main saw plate and the auxiliary saw plate; and is arranged on a saw plate installation flange of the shaft neck shaft sleeve through as blade installation hole; and the manufacturing method of the connection structure comprises manufacturing of the main saw plate, the auxiliary saw plate and the shaft neck shaft sleeve, machining of the sawing machine blade and combined installation of various parts. The novel sawing machine blade connection structure is reasonable in design, connection of the blade and the saw plate can be tighter, whole set replacement is not needed when abrasion is generated, and the novel sawing machine blade connection structure is simple and convenient to maintain, high in production efficiency and low in consumption of the spare parts.

The invention discloses an automatic water reservoir which comprises a multistage filter water box and a water storage tank, wherein an automatic water inlet control valve is arranged on a water inlet pipe of the multistage filter water box, a water outlet pipe is communicated with the water storage tank, a water stop sheet is arranged in the water storage tank, a cold water tank is arranged at one side of the water stop sheet, a hot water tank is arranged at the other side of the water stop sheet, the lower parts of the cold water tank and the hot water tank are respectively provided with a water drain valve, the water stop sheet is provided with a control valve for controlling water conveyed from the cold water tank to the hot water tank, the upper end surface of the water stop sheet is hermetically connected with the bottom surface of the multistage filter water box, a controller is arranged at the position outside and above the hot water tank, a heater is arranged below the hot water tank, a heat-insulation layer is arranged on the surface of the hot water tank, an exhaust pipe is arranged on the body of the hot water tank, a temperature sensor, an upper water level sensor and a lower water level sensor are arranged in the hot water tank, and the heater, the temperature sensor, the water delivery control valve and the upper and the lower water level sensors are respectively connected with the controller electrically. The automatic water reservoir can be used for storing purified tap water and boiled drinking water, thus reducing equipment, saving space and creating more convenience for people on the basis of purification and water storage.

The invention provides a switch cabinet operating environment improving system and method. The system comprises a switch cabinet, an axial flow fan, an industrial constant temperature dehumidifier, and temperature and humidity sensors, wherein the switch cabinet is arranged in a closed switch room; the axial flow fan is mounted on a pressure relief plate on the top of the switch cabinet; the axialflow fan is in signal connection with a controller in the switch room; the switch room is also internally provided with the industrial constant temperature dehumidifier and the temperature and humidity sensor for detecting the switch cabinet; the temperature and humidity sensor that detects air temperature and humidity is arranged outside the switch room; and the industrial dehumidifier and the temperature and humidity sensors inside and outside the switch room are in signal connection with the control system. The air in the switch cabinet is ensured to be dry, and insulation flashover and insulation damage of the equipment in the switch cabinet are reduced.