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46results about How to "Moderate clearance" patented technology

Self sealed self decompressed coal seam sampling method and apparatus

The invention relates to a self-sealing and self-decompressing coal seam sampling method and a device thereof, which comprises the steps as follows: (1) a sampler is arranged ready; (2) when a sampling drilling bit drills into a coal seam, a coal sample goes into the front end of a piston of a sampler and repeatedly extrudes the piston to squeeze the sealing liquid through a liquid outlet of an inner tube of the sampler into a gap between the inner tube and an outer tube of the sampler, the coal sample is penetrated, enwrapped and solidified through the gap between the sampling drilling bit and the inner tube to form the front end sealing of the coal sample; (3) when the piston crushes a brittle baffle inside the sampler, coal sampling is completed, and the gas borne by the coal sample automatically butts against the piston to continue to move backwards until an unidirectional valve of the piston is opened for pressure relief, and the gas which enters a vacuum tube of the sampler is absorbed by the absorbing material in the vacuum tube; and (4) when the absorption is completed, the coal sample and the absorbing material are taken out, and the conventional gas content measurement and calculation are conducted. The coal seam sampling method and the device can be widely used in sampling processes for various coal gas content measurements.
Owner:NORTH CHINA INST OF SCI & TECH

System for treating printing and dyeing wastewater with activated coke adopted and process thereof

The invention provides a system for treating printing and dyeing wastewater with activated coke adopted. The system comprises a hydrolytic acidification device, an activated sludge pool, a settling pool and a biological filter pool, wherein the hydrolytic acidification device, the activated sludge pool, the settling pool and the biological filter pool are arranged in a sequentially connected mode, activated coke is added into the hydrolytic acidification device, and discharging water with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again. According to the system, the activated coke is added into the hydrolytic acidification device, the activated coke is fully mixed with the wastewater in the hydrolytic acidification device, so that standing time of recalcitrant molecules in the wastewater on the hydrolytic acidification device is improved, and efficiency of hydrolytic acidification is improved. The wastewater with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again, the activated coke continues to have the function of absorption and degradation, and removal efficiency on sludge concentration and organic matter in the activated sludge pool is improved.
Owner:BEIJING GUODIAN FUTONG SCI & TECH DEV

Protective device of vacuum measuring tool of ion beam etching system

The invention provides a protective device of a vacuum measuring tool of an ion beam etching system. The ion beam etching system comprises a reaction cavity and the vacuum measuring tool used for measuring the internal vacuum degree of the reaction cavity; a ventilation connector is arranged on the wall of the reaction cavity; and the vacuum measuring tool is connected to the ventilation connector. The protective device comprises a blocking plate arranged in the reaction cavity and used for shielding the ventilation connector; the blocking plate is close to the inner wall of the reaction cavity at the ventilation connector; and a projection surface, projected onto the blocking plate along the central axis of the ventilation connector, of the ventilation connector is located in a shieldingsurface range of the blocking plate. The protective device further comprises a push-pull mechanism for driving the blocking plate to be far away from or close to the ventilation connector. According to the protective device, metal particles and ion beams are effectively blocked through the blocking plate which closely shields the ventilation connector; the blocking plate is driven to be far away from or close to the ventilation connector through the push-pull mechanism, so that a gap between the blocking plate and the inner wall of the reaction cavity is prevented from being blocked by impurities, and the proper gap is kept under the condition that the ventilation requirement is met.
Owner:JIANGSU LEUVEN INSTR CO LTD

System for treating printing and dyeing wastewater with activated coke adopted and process thereof

The invention provides a system for treating printing and dyeing wastewater with activated coke adopted. The system comprises a hydrolytic acidification device, an activated sludge pool, a settling pool and a biological filter pool, wherein the hydrolytic acidification device, the activated sludge pool, the settling pool and the biological filter pool are arranged in a sequentially connected mode, activated coke is added into the hydrolytic acidification device, and discharging water with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again. According to the system, the activated coke is added into the hydrolytic acidification device, the activated coke is fully mixed with the wastewater in the hydrolytic acidification device, so that standing time of recalcitrant molecules in the wastewater on the hydrolytic acidification device is improved, and efficiency of hydrolytic acidification is improved. The wastewater with the activated coke and from the hydrolytic acidification device enters the activated sludge pool again, the activated coke continues to have the function of absorption and degradation, and removal efficiency on sludge concentration and organic matter in the activated sludge pool is improved.
Owner:BEIJING GUODIAN FUTONG SCI & TECH DEV

Self sealed self decompressed coal seam sampling method and apparatus

The invention relates to a self-sealing and self-decompressing coal seam sampling method and a device thereof, which comprises the steps as follows: (1) a sampler is arranged ready; (2) when a sampling drilling bit drills into a coal seam, a coal sample goes into the front end of a piston of a sampler and repeatedly extrudes the piston to squeeze the sealing liquid through a liquid outlet of an inner tube of the sampler into a gap between the inner tube and an outer tube of the sampler, the coal sample is penetrated, enwrapped and solidified through the gap between the sampling drilling bit and the inner tube to form the front end sealing of the coal sample; (3) when the piston crushes a brittle baffle inside the sampler, coal sampling is completed, and the gas borne by the coal sample automatically butts against the piston to continue to move backwards until an unidirectional valve of the piston is opened for pressure relief, and the gas which enters a vacuum tube of the sampler is absorbed by the absorbing material in the vacuum tube; and (4) when the absorption is completed, the coal sample and the absorbing material are taken out, and the conventional gas content measurement and calculation are conducted. The coal seam sampling method and the device can be widely used in sampling processes for various coal gas content measurements.
Owner:NORTH CHINA INST OF SCI & TECH

Design method of wind-proof anti-theft weight restraint bracket

The invention relates to a weight restraint bracket, in particular to a design method of a wind-proof anti-theft weight restraint bracket. The invention is characterized in that the weight restraint bracket comprises guide pulleys, one end of a weight fixing frame is provided with an anchor ear of the weight fixing frame, the other end thereof is the body of the weight fixing frame, the M-shaped anchor ear is welded on the body of the weight fixing frame, and both ends of the anchor ear of the weight fixing frame are fixed at both ends of the body of the weight fixing frame by bolts; and two groups of parallel guide pulley angle cleats are vertically fixed on the body of the weight fixing frame by bolts, two parallel guide pulleys are vertically connected between the two parallel guide pulley angle cleats of each group, and a gap is formed between the two guide pulleys. The weight restraint bracket of the invention overcomes the problems of oscillation, impact, clamping stagnation, deflection and the like of the weight restraint bracket in a strong wind area, and simultaneously changes the sliding friction between the anchor ear of the weight and the restraint pipe into rolling friction, thereby reducing the friction resistance.
Owner:周建科

Sliding vane expander comprising cylinder rotated with rotor

The invention discloses a sliding vane expander comprising a cylinder rotated with a rotor. The sliding vane expander comprises a casing, a moving cylinder, the rotor, a bearing pack and mechanical seals; a barrel of the casing is internally provided with the moving cylinder coaxially, and the cylinder is internally provided with the rotor eccentrically, but the outer diameter of a rotating disk is kept for a certain distance with the wall of the cylinder; 6-12 (an even number of) axial rectangular grooves are distributed in the rotating disk uniformly, and sliding vanes are arranged in the grooves; a wide sliding vane is embedded into a trapezoid groove of the cylinder for driving the moving cylinder to rotate synchronously; a left end plate of the casing is provided with an air inlet andan air outlet, and communicates with an airfoil inlet gap and an outlet gap in a guide disk through a transition chamber; and both the inlet gap and the outlet gap communicate with a chamber betweenthe cylinder and the rotating disk smoothly. The relative speed difference between the moving cylinder and the sliding vanes is lower, and the frictional loss is less; and the expander has the advantages of high efficiency, large flow, the simple structure and the like.
Owner:SOUTHEAST UNIV

Manufacturing method for pulling boring machine boring rod central frame

The invention discloses a manufacturing method for a pulling boring machine boring rod central frame. The manufacturing method comprises the step that a supporting base, a bearing outer sleeve, a bearing adjusting fixing board, a roller bearing, a blanket cushion sealing ring, a bearing inner sleeve, a right adjusting thread fixing board, right adjusting threads, an adjustable taper sleeve, a left adjusting thread fixing board and left adjusting threads are installed according to drawings. The clearance between the frustum-shaped adjustable taper sleeve and a boring rod is proper, wherein the adjustable taper sleeve of the pulling boring machine boring rod central frame is made of nylon materials, vibration is effectively avoided, the quality of a machined hole is ensured, collision is effectively avoided at the same time, and the service life of the boring rod is prolonged; due to the fact that the right adjusting thread fixing board, the right adjusting threads, the left adjusting thread fixing board and the left adjusting threads are arranged, the adjustable taper sleeves of different inner diameters can be replaced conveniently to enable the taper sleeves to be matched with boring rods of different diameters for use, the best using state is achieved, the structure is simple and reasonable, and use is convenient and reliable.
Owner:QINGDAO NPA IND

Unmanned aerial vehicle for cleaning high-voltage line insulator

The invention discloses a high-voltage line insulator cleaning unmanned aerial vehicle which comprises an unmanned aerial vehicle body, the unmanned aerial vehicle body comprises a fuselage, the periphery of the fuselage is fixedly connected with a set of wing rods, the tail ends of the wing rods are provided with mounting seats, the mounting seats are fixedly connected with motors, output shafts of the motors are in driving connection with wing panels, and the wing panels are fixedly connected with the fuselage. A water tank is fixedly connected to the lower portion of the machine body, a pair of water distribution pipes is rotationally connected to the bottom of the water tank, a pair of semicircular arc-shaped pipes are fixedly connected to the water distribution pipes, a set of spray heads are evenly distributed on the inner sides of the arc-shaped pipes, and the bottom of the water tank is connected with the water inlet end of a high-pressure water pump through a pipeline; the water outlet end of the high-pressure water pump is connected with a pair of water distribution pipes through pipelines, and electric telescopic rods are hinged to the front side wall and the rear side wall of the water tank. The device is high in working efficiency, low in dangerousness, low in use cost, simple in structure, clear in principle, easy to manufacture, low in manufacturing cost and worthy of popularization.
Owner:HARBIN UNIV OF SCI & TECH

Screwdriver

A screwdriver comprises a shaft barrel, a gear train installed in the shaft barrel, a shaft system installed on the gear train, a shifting ring installed outside the shaft barrel in a sleeving mode and a shell fixed outside the shaft barrel. A screwdriver rod body is driven to rotate through pressing, the rotation direction of the screwdriver rod body is controlled through shifting of a clutch spline shaft, screwing or unscrewing of a screw is achieved, rotation or stopping of the screwdriver rod body is achieved through shifting of a shifting ring and controlling of separation and reunion of a stopping claw and a stopping wheel, and the problem that large torque is needed when the screw is loosened and fastened is solved through fixing of the screwdriver rod body.
Owner:李传聪

Black tea fermentation production method and device

The invention discloses a black tea fermentation method and device which are sufficient in oxygen supply and capable of achieving independent fermentation. The black tea fermentation device comprisesa layered structure frame body; tea base fermentation tanks are formed in all layers, and a gap is formed between the upper tea base fermentation tank and the lower tea base fermentation tank; a heating mechanism is arranged on the frame body; the heating mechanism comprises a controller, and the controller is connected with a control power supply, a power supply, a temperature sensor and a buzzerseparately; and a heater connected with the controller is arranged at the bottoms of the tea base fermentation tanks. The original closed fermentation environment is broken through, the multiple independent tea base fermentation tanks are formed in the frame body of the layered structure, and the waiting time is saved; a gap is kept between upper and lower tea base fermentation tanks, so that airpermeability is high, oxygen supply is sufficient, and sufficient fermentation is facilitated; the heater is arranged at the bottoms of the tea base fermentation tanks and used for controlling the fermentation temperature and accurately controlling the fermentation temperature to achieve a variable-temperature fermentation effect; timing working hours is realized, and reminding is performed by the buzzer, so that the tea bases are stirred to be fully and uniformly fermented; wet cloth is adopted for moisturizing, so that observation and moisturizing are facilitated; and work is stopped and reminded regularly, and excessive fermentation is avoided.
Owner:安化县九红茶业有限公司
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