39results about How to "Control contact" patented technology

The invention relates to a countercurrent double-loop cylinder dryer, which comprises a support, an inner cylinder, an outer cylinder, a driving device, a feeding device and a discharging device, and is characterized in that: a middle cylinder is arranged between the inner cylinder and the outer cylinder, and one end of the inner cylinder and one end of the middle cylinder are respectively provided with an annular seal plate; one end of the outer cylinder is provided with a seal plate, and the three cylinders constitutes a material layer and two flue gas heating units, i.e., an inner-layer flue and an outer-layer flue; and a plurality of reinforcing supporting columns are arranged among the three cylinders for connecting and positioning, and frying plates are uniformly arranged on the outer wall plate of the inner cylinder and the inner wall plate of the middle cylinder. The problems that the material and the flue gas flow from the same pipeline, and are fully mixed, so that the dried material is mixed with impurities and the production safety is possibly generated by ineffectively controlling sparks in the flue gas to be contacted with the material and the like in the traditional drum drying machine can be solved, the structural design is reasonable, the performance is stable, the process flow is smooth, the overheating time of a dry area is long, the thermal efficiency is high, the energy is saved and the consumption is reduced, the quality of the dried material is high, and the range of application is wide.

The invention relates to a cleaning sterilizing device for a washing machine, a washing machine using the cleaning sterilizing device and a control method thereof, wherein the cleaning sterilizing device comprises an ozone bubble generating device, a bubble generator and a control device; the ozone bubble generating device comprises an ozone generator and an air pump; the ozone bubble generating device is connected with the bubble generator; and the control device can control the ozone bubble generating device and the bubble generator to individually form air bubbles or ozone bubbles or control the ozone bubble generating device and the bubble generator to simultaneously generate air bubbles and ozone bubbles. Through a corresponding control method, only air bubbles are injected in the water cleaning process of the washing machine to reduce the mutual friction of clothes in the washing process; the air bubbles and the ozone bubbles are simultaneously injected in the water storage and rinsing process; and only the ozone bubbles are injected in the final dewatering procedure to sterilize the clothes. The washing machine using the cleaning sterilizing device has the advantages of high clean ratio, high sterilizing capability, low ozone consumption and low energy consumption, and is helpful for realizing energy conservation and discharge reduction.

The invention discloses a method for preparing nano tungsten nitride, belonging to the technical field of powder metallurgy preparation. The method comprises the following steps: synthesizing and preparing a tungsten oxide precursor through a solution method; and nitriding the tungsten oxide precursor in ammonia gas to obtain nanocrystalline tungsten nitride powder, wherein the particle size of the powder is 30-120nm. By virtue of the method disclosed by the invention, the problems that ultrafine nanocrystalline powder can be difficultly prepared by a traditional preparation method and the preparation time is long in the traditional preparation method can be solved. The tungsten nitride powder prepared by using the method disclosed by the invention is controllable in particle size, low in cost and high in utilization rate of raw material powder and has remarkable catalytic performance.

A method of controlling the de-alloying of metal alloy particles for fuel cell catalyst layers includes a step of forming a two-phase liquid system that comprises a first liquid and a second liquid. The first liquid is immiscible with the second liquid and the second liquid contains an acid. Metal alloy particles are added to the two-phase system to form a particle-containing liquid mixture. The particle-containing liquid mixture is agitated such that etched metal alloy particles are formed. The resulting etched metal alloy particles are then advantageously used to form fuel cell catalyst layers.

The invention discloses a magnetic stirring high-temperature and high-pressure oil gas fluid sample preparation device. The sample preparation device comprises a heating jacket, a high-pressure cavity with magnetic stirring, an external gas cylinder, an intermediate container and a high-pressure gas pump, wherein the interior of the high-pressure cavity is sequentially provided with a first cavity, a second cavity and a third cavity from top to bottom, and the first cavity is provided with a pipeline for inputting and outputting a sample; the third cavity is communicated with a high-pressure gas pump through an intermediate container; a heating sleeve wraps the periphery of the first cavity, a magnetic stirrer is arranged in the first cavity, and a pneumatic motor for driving is arranged below the magnetic stirrer; sample preparation of the degassed oil and the associated gas is completed by using the sample preparation device through four steps of oil gas injection, oil gas heating and pressurizing operation, oil gas stirring and mixing and sample preparation transfer-out. The device is novel in structural design, does not need to swing the cylinder in the sample preparation process, occupies a small area, adopts the pneumatic motor, shortens the length of the heating sleeve, saves electric energy, and is convenient and fast to use.

The invention discloses a hot pressing process and device for high-performance bamboo-wood composite floor production, and belongs to the technical field of hot pressing. The hot pressing device comprises a hot press body, a protective cover is arranged on the outer side of the hot press body, and a movable door is hinged to the front side face of the protective cover through a first hinge; a feeding assembly used for facilitating feeding is arranged on the movable door, and a pushing assembly is arranged on the movable door; an adsorption unit is arranged on the right side face of the protective cover; and two fixing blocks are fixed to the bottom of each of the left side face and the right side face of the protective cover, first screws are fixed to the lower surfaces of the fixing blocks, and universal wheels are installed at the bottoms of the first screws. According to the hot pressing process and device for high-performance bamboo-wood composite floor production, by arranging first strip-shaped holes and storage strip-shaped plates, workpieces to be subjected to hot pressing can be placed on the movable door in a layered mode, so that the workpieces can be synchronously fed to multiple layers of hot pressing stations on the hot press body, the actual feeding speed is greatly increased, and the actual working efficiency can be advantageously improved.

The invention discloses a clamping device for orthopedic treatment which comprises a first clamping plate, first fixing plates are fixedly connected to the two sides of the top of the first clamping plate, and a clamping mechanism is arranged at the top of the first clamping plate. The clamping mechanism comprises a second clamping plate, second fixing plates are fixedly connected to the two ends of the bottom of the second clamping plate, first special-shaped holes are formed in the two ends of the top of each second fixing plate, threaded sleeves are fixedly connected to the two ends of the top of each first fixing plate, threaded blocks are in threaded connection with the interiors of the threaded sleeves, first rotating grooves are formed in the tops of the threaded blocks, first connecting blocks are arranged in the first rotating grooves, first special-shaped blocks are fixedly connected to the top of the first connecting blocks, and the first special-shaped blocks are arranged in the first special-shaped holes and movably connected with the second fixing plates in a sleeving mode. The clamping device has the advantages that the problem that an existing clamping device is prone to unstable clamping or limbs of a patient are prone to being separated from clamping plates during clamping can be solved, and the patient can be effectively prevented from being injured by clamping, which facilitates smooth operation or treatment.

The invention relates to a nozzle and a herbicide spraying device for synchronous rice transplanting of a rice transplanter. The herbicide spraying device comprises a material storage assembly and a water feeding assembly, wherein the lower end of the material storage assembly is connected with a nozzle assembly, a rotating speed detection assembly is mounted at the front end of the nozzle assembly, an adjusting assembly is connected to the rear end of the nozzle assembly, a pesticide filling assembly is arranged at the rear end of the material storage assembly, a pressurizing assembly is mounted at the right end of the material storage assembly, and the water feeding assembly is located at the left end of the material storage assembly. The nozzle and the herbicide spraying device for synchronous rice transplanting of the rice transplanter have the beneficial effects that herbicide in the equipment can be completely discharged, so that the pesticide waste can be reduced; the equipment can adjust the pesticide filling speed according to the spraying speed, and therefore, the herbicide can be conveniently kept at the same concentration; the equipment can independently adjust the angle of the nozzle, multi-angle work of the equipment is facilitated, the equipment can adjust the herbicide concentration of the equipment according to the weed concentration of the rice field, and the equipment has cleaning and anti-blocking functions.

The invention discloses a series assembly device and method for solar cell silicon wafers, and belongs to the technical field of assembly equipment, the series assembly device comprises a cell silicon wafer plate body, the cell silicon wafer plate body is made of a plurality of silicon wafers and a plurality of assembly parts, the plurality of silicon wafers are assembled together through the assembly parts, the silicon wafers are provided with a plurality of first conductive sheets, and the first conductive sheets are arranged on the silicon wafers. One end of the first conducting strip is fixedly connected with a second conducting strip, the other end of the first conducting strip is fixedly connected with a third conducting strip, one end, close to the second conducting strip, of the silicon wafer is fixedly connected with a plug board, and one end, close to the third conducting strip, of the silicon wafer is provided with a plug port. The tightness between the second conducting strip and the third conducting strip is realized, the contact area between the silicon wafers is increased by using the plugging of the plugging plate and the plugging port, and meanwhile, the second conducting strip and the third conducting strip which are plugged are connected together in an electrocoagulation manner, so that the electrification between the plurality of silicon wafers is realized.