44results about How to "Increase tangential force" patented technology

The invention discloses an alkylation reactor and an alkylation reaction method. The alkylation reactor comprises a reactor drum body, a sealing head, an inner rotating bed, an outer rotating bed, a feeding pipe, a fed material distributing pipe, a discharging opening, a circular cooling gas inlet and a circular cooling gas outlet, wherein the reactor drum body and the sealing head form a closed shell; the inner rotating bed is arranged in the middle in the shell; the fed material distributing pipe is arranged in a central hollow drum structure of the inner rotating bed and is communicated with the feeding pipe; a feeding mixer is arranged at the connecting position of the feeding pipe and the sealing head; the discharging opening is formed in the lower part of the shell; the inner rotating bed is connected with a driving device by the feeding pipe; the outer rotating bed is arranged at the outer side of the inner rotating bed; the upper end of the inner rotating bed and the fed material distributing pipe are connected into an integrated structure by a sealing member; the outer rotating bed and the shell are fixedly connected; and the outer rotating bed is connected with the driving device at the lower part by a rotating shaft. The alkylation reactor and the alkylation reaction method disclosed by the invention have the advantages that concentrated sulfuric acid is adopted as a catalyst, iso-butane and olefin are adopted as materials to carry out alkylation reaction, the reaction can be carried out under low temperature, the acid consumption is low and the quality of a product is high.

The invention provides a gear-tooth block meshing switching device for linear reciprocating motion and rotational motion. Four pairs of track plates are mounted in a casing, one ends of the track plates are hinged to the inner walls of the two sides of the casing, the other ends of the track plates are provided with track grooves respectively, and a track shifting mechanism lifter is arranged among the four pairs of track plates. Tooth block lines including a plurality of tooth blocks are mounted on a driving frame mechanism, sliding pins extending from two sides of each tooth block are respective disposed in each track groove, a gear fixedly mounted with a transmission shaft is arranged between the two tooth block lines, and the lifter driving device drives the lifter to lift or descend the track plates. Besides, a frame of the driving frame mechanism is connected with one end of a connecting rod, and the other end of the connecting rod is connected with a piston. The switching device is capable of realizing equivalent switching between linear reciprocating motion and rotational motion.

The invention relates to a rotary motion and reciprocating motion converting device (20) which comprises pistons (72, 74, 76, 78), wherein one end of each piston rods (62, 64) is connected with the pistons (72, 74, 76, 78); a shell (25) is installed on a base seat (11); a side wall (28) of the shell (25) is provided with a bearing seat (5); a transmission shaft (6) is installed in the bearing seat (5); the transmission shaft (6) is provided with transmission wheels (15, 17); the edge parts of the transmission wheels (15, 17) are provided with column pins (7, 71) extending out axially; a first gear (10) and a second gear (14) which can rotate relative to the transmission shaft (6) are installed close to the transmission wheels (15, 17); the first gear (10) and a first rack (2) are meshed mutually; the second gear (14) and a second rack (22) are meshed mutually; the first rack (2) and the second rack (22) are respectively positioned at two sides of the transmission shaft (6); connecting plates (90, 91) are connected with the end parts of the first rack (2) and the second rack (22); the connecting plates (90,91) are connected with other ends of the piston rods (62, 64); tooth-free parts of the first gear (10) and the second gear (14) are respectively provided with pin grooves (9, 21); the pin grooves (9, 21) are internally provided with sliding blocks (32, 42) which are matched with the column pins (7, 71); and the restoration springs (12, 121) are arranged below the sliding blocks (32, 42). Thus the conversion between the rotary motion and the reciprocating motion is realized.

The invention discloses a semi-automatic rigid-flexible coupling type hydraulic exoskeleton, and relates to an assistant force mechanism in the field of robots. The exoskeleton comprises a waist unit,leg units and a hydraulic damper regulator. The hydraulic damper regulator comprises a cylinder body, a titanium alloy sleeve, a cylinder head, a piston, an extension assistant force spring, an oil inlet plug, an intersection channel type valve body, a valve body sealing seat, a valve body end bevel gear, an angle sensor, a motor fixing base, a direct-current servo motor, a coupling and a motor end bevel gear. The semi-automatic rigid-flexible coupling type hydraulic exoskeleton can achieve assistant force or damping adjustment in a weight carrying mode or on-load walking mode; in the weightcarrying mode, both a from-high-to-low carrying mode and a from-low-to-high carrying mode are supported, and the high applicability is achieved; assistant force can be provided to knee joints when theknee joints bend naturally when a user bends down; a semi-automatic torque adjustment system is formed by hydraulic dampers and springs, the assistant force and damping force can be adjusted in magnitude, the weight is light, and high coupling is achieved between human and machines.

The invention discloses a lead welding device and technique for packaging a semiconductor power device and belongs to the technical field of semiconductor power device packaging and manufacturing. The device is a laser wire welding machine and comprises a computer main board, a laser generator, a chip and frame image identification system, a feeding system and an XY workbench. The computer main board is used for controlling all the actions of the laser wire welding machine to achieve the whole automatic and accurate wire welding technique process; the laser generator is used for outputting laser spots of the required power and the required diameter; and the feeding system is used for accurately conveying a frame, a lead and a brazing wire to the work position before welding actions are executed. According to the technique, lead connection is achieved through a brazing technique, and the brazing process is achieved through lasers. By the adoption of the device and technique, a wet aluminum pad and a frame are directly melted to achieve the stable and reliable connection of the lead, a chip and the frame, and therefore mechanical damage, thermal damage and the stress problem existing in a traditional routing technique are avoided.

The invention discloses a self-cleaning high-temperature oil gas filter dust-removal process device and method. The device comprises a plurality of filter towers connected in parallel, wherein each filter tower comprises an upper seal head, a lower seal head and a plurality of tower filter groups which are perpendicularly stacked and the same; upper seal heads of which the side surfaces are provided with high-temperature oil gas connectors are arranged at the upper ends of the perpendicularly stacked tower filter groups; the lower seal heads provided with dust-containing exhaust connectors are arranged at the lower ends of the perpendicularly stacked tower filter groups; the upper ends of the filter towers are connected in parallel through the high-temperature oil gas connectors; the lower ends of the filter towers are connected in parallel through the dust-containing exhaust connectors; a filter group purified-gas connector is formed in each tower filter group; the filter tower groups are connected in parallel through the filter group purified-gas connectors. According to the invention, after the device adopts a tower structure, the process device with a reasonable height-diameter ratio can be designed; after the high-temperature pyrolysis oil gas treated by the self-cleaning high-temperature oil gas filter dust-removal process device and method is recovered, the solid content of coal tar is less than 0.5 mg/L, so that the technical requirements of coal tar deep-processing process are completely met.

The invention discloses a method for improving wind power utilization of vertical axis wind turbine blade by using a guide strip technology. One guide strip is mounted on each of positions, which are located at 20%, 40%, 60% and 80% of the vertical axis wind turbine blade in a blade stretching direction. Height of the guide strips is 3% of blade chord length and thickness of the guide strips is 1% of the blade chord length. The guide strips extend to the blade tail edge from the blade front edge; and an offset distance front the front point positions of the front edges of the guide strips to final points of the tail edges of the guide strips is 6% of the blade chord length. The method has the effects and beneficial effects that: a flow-through path of airflow of the wind turbine blade is controlled by adopting the blade guide strip technology, so that angles that the airflow enters and leaves the blade are changed, thereby increasing lifting force of the blade and increasing tangential force of the blade simultaneously. The method has the advantages of reducing starting wind velocity of a fan, improving a wind energy utilization coefficient, and the like.

The invention provides a high-tap-density high-nickel ternary precursor and a preparation method and an application thereof. The preparation method of the ternary precursor comprises the steps that a,a salt solution and a complexing solution are continuously added to the bottom of a reactor, and when the particle size D50 of a current precursor reaches 10-12 [mu]m, controlling the pH value of a reaction system to be 11.10-11.50; b, controlling the pH value of the reaction system to be 10.50-10.90 when the particle size D50 of the current precursor reaches 8-10 [mu]m; and repeating the step aand the step b for multiple times to obtain the high-tap-density high-nickel ternary precursor with the particle size D50 of 8-12 [mu]m and the tap density of 2.4-2.5 g/mL, thereby solving the problems of difficulty in controlling the size of the precursor, low tap density and the like in the prior art. According to the preparation method of the ternary material precursor, ammonia gas and waste liquid in a system are recycled, sodium sulfate in the system is separated out through cooling crystallization to be used as a by-product, and resource comprehensive utilization of three wastes is achieved.

The present disclosure relates to piston engine systems which are no longer restricted by their compression ratios. Rather, a mixture of fuel and pre-compressed air is used to complete the combustion. The pressure of the compressed air is independently controlled. As a result, the clearance volume can be reduced to less than 1/50 or to zero, and the piston engine systems can be used with different types of fuels, for example, gasoline, diesel, ethanol, or vegetable oils.

The invention provides a foot dryer comprising a shell and a fan. The fan is arranged in the shell, the shell is provided with a containing cavity, the shell is provided with a containing cavity opening corresponding to the containing cavity, the inner wall of the containing cavity is provided with an air outlet, the air outlet is communicated with an air outlet of the fan through an air outlet duct, the outer side of the shell is provided with an air inlet opening, the air inlet opening is communicated with an air inlet of the fan through an air inlet duct, and soft foot pads are arranged atthe bottom of the containing cavity. The foot dryer has the following beneficial effects: the foot dryer is simple in structure and convenient to use; the air outlet in the cavity is used for impacting the foot surface and the tangential force, generated by the airflow impact, of the feet is increased, so that water spots on the foot faces are blown off, the foot drying time is effectively shortened, the foot drying effect is improved; the pneumatic noise at the air outlet is effectively lowered through the design of the air outlet, so that the working noise of the foot dryer is lowered; the comfort degree is improved in cooperation with a soft foot pad at the bottom, so that the user experience is greatly improved.