65results about How to "Reduce the number of blockages" patented technology

An optical collector with multi-section circular arc relates to an optical collector utilizing solar energy, particularly a linear focusing reflecting type optical collector. The optical collector comprises a receiver (1), a reflector with multi-section circular arc (2) and a bracket (3), wherein the receiver (1) is above the reflector with multi-section circular arc (2) and is in the position ofthe focal line formed by the reflector with multi-section circular arc (2). The bracket (3), under the reflector with multi-section circular arc (2) is for fixing the reflector with multi-section circular arc (2) and extends out a supporting rod from the gap of the reflector with multi-section circular arc (2) to support the receiver (1). By adopting the reflecting type linear optical collector, the problems of the refracting type optical collector, that the cost is high, the size is difficult to amplify, the optical efficiency is limited by index of refraction, etc., can be solved. The reflector with multi-section circular arc instead of the parabolic reflector can obviously decrease the processing difficulty and manufacturing cost and also can decrease the mounting difficulty and promotethe concentrating ratio.

The invention pertains to the communication technical field, and particularly relates to a design method of a low density parity-check matrix. Aiming at distributing the storage, avoiding the read/write conflict and simplifying an encoder, the design method of the invention designs an H check matrix based on a layer scheduling algorithm decoding method, and conducts a beam-column transform to the check matrix and searches for the largest average ring to improve performances. By adopting the method of the layer scheduling Min-Sum algorithm to decode, the matrix can simultaneously meet the requirements of realizing high performances and low complexity hardware. The matrix produced by using the method of the invention can realize an LDPC decoding circuit with low complexity and high throughput rate.

In the distillation purification of (meth)acrylic acid or a (meth)acrylic ester, attachment, deposition and accumulation of solid matter are prevented to thereby stably maintain a high recovery rate for (meth)acrylic acid or a (meth)acrylic ester, realizing stable continuous operation of the distillation column for a prolonged period of time. There is provided a method of distillation of a composition containing (meth)acrylic acid or a (meth)acrylic ester by means of a distillation column having multistage trays in its interior, wherein use is made of a distillation column packed with, as trays, corrugated-plate-type non-weir perforated plates each having a corrugated sectional configuration and multiple through-holes and flat-plate-type non-weir perforated plates each constituted of a flat plate having multiple through-holes.

The invention discloses a system and a method for processing coarse titanium tetrachloride. The system comprises a mixing tank, an evaporator, a buffering tank, a vanadium slag pump and a vanadium slag recovering device, wherein the mixing tank is provided with a coarse titanium tetrachloride inlet, an organic matter inlet and a mixture outlet; a stirrer is arranged in the mixing tank; the evaporator is provided with a mixture inlet, a steam inlet, a fine titanium tetrachloride gas outlet and a vanadium slag outlet; another stirrer is arranged in the evaporator; the buffering tank is provided with a vanadium slag inlet and a vanadium slag discharging port; the vanadium slag pump is connected with the vanadium slag discharging port; and the vanadium slag recovering device is connected with the vanadium slag pump. With the adoption of the system, the average blocking times of a vanadium slag pipeline are reduced to be once a month; the perforating times of the vanadium slag pump are reduced to be once every three months; in addition, the yield of obtained fine titanium tetrachloride is beyond 95%; and compared with the prior art, the yield of fine titanium tetrachloride is increased by more than 18-35%.

The invention discloses an overlapping rectangular subpattern-based non-symmetry and anti-packing model (NAM) image representation method, which comprises a coding process and a decoding process. The coding process mainly comprises the following steps of: dividing a gray image matrix into same-class blocks which can be overlapped by utilizing an extended Gouraud shadowing method and four criterions of an overlapping rectangular NAM; and coding all the same-class blocks to acquire a color table P and a coordinate table Q of the same-class blocks. The decoding process mainly comprises the following steps of: decoding coordinate matrixes H, V and I according to the coordinate table Q, reconstructing a decoded image by utilizing the extended Gouraud shadowing method according to the H, the V, the I and the color table P, and calculating the peak signal to noise ratio (PSNR) of the reconstructed image. On the premise of ensuring the quality of the image, the method has a low bit rate, a small number of blocks and high processing speed, and can be applied to the conventional joint photographic experts group (JPEG) market as well as the emerging fields of wireless communication, network transmission, medical images and the like.

The invention discloses a wide-adaptability cigarette packaging adhesive and a preparation method thereof, and relates to the technical field of adhesives, and the packaging adhesive disclosed by theinvention comprises an antifoaming agent added into a VAE emulsion and a polyvinyl alcohol aqueous solution, a preservative and an auxiliary agent, wherein the auxiliary agent comprises the followingcomponents in parts by weight: 5-10 parts of a plasticizer, 0-5 parts of a tackifier, and 0.1-0.5 part of a surface wetting agent. According to the present invention, the components are respectively added to the VAE emulsion to carry out different stirring so as to obtain the wide-adaptability cigarette packaging adhesive. The preparation method is simple, the cost is low, the requirement on the material is low, and the excellent adhesion effect can be provided even for the packaging material with the small effective adhesion area; and particularly, the shutdown frequency and nozzle blockage in the cigarette production process are reduced, and the influence of temperature is not likely to happen.

The invention discloses a solid-liquid separating and filtering device for a squeezer. The solid-liquid separating and filtering device for the squeezer comprises a box body and a squeezing part, wherein the inner wall of the box body is fixedly connected with a juice squeezing pipe; the upper surface of the box body is provided with a first opening communicated with the juice squeezing pipe; and the surface of the box body is provided with a second opening used for placing a residue storage barrel. The solid-liquid separating and filtering device for the squeezer further comprises six connecting plates, switching parts and linkage parts, wherein the surfaces of the six connecting plates are all provided with filter screens; the switching parts are used for sequentially switching the six filter screens to the lower surface of the juice squeezing pipe; the linkage parts are used for driving the six filter screens to be all inclined in the direction of a barrel opening of the residue storage barrel before switching; and the switching parts are in transmission connection with the linkage parts. The solid-liquid separating and filtering device for the squeezer has the effect that the switching parts switch the filter screens, and solves the problems that after an existing fruit squeezer squeezes fruit juice, garbage in the fruit squeezer is inconvenient to clean, and due to the fact that pulp of different fruits is different in size, the large pulp is easy to shield mesh openings of the filter screens, so that the juice flowing out is influenced.

The embodiment of the invention discloses a data access method and device, a server and a storage medium, and the method comprises the steps: obtaining a current data access request which comprises adatabase object and a transaction number; the database object and the transaction number are blocked; and executing data access corresponding to the blocked data access request. According to the embodiment of the invention, the blocking number in the data access corresponding to the data manipulation language is reduced, and the blocking number in the data access corresponding to the data definition language is increased; due to the fact that the number of times of execution of the data manipulation language in the database is very large and far higher than the frequency of execution of the data definition language, control and management of concurrent operation of the database through different locks are achieved, violent competition of system lock resources is greatly reduced, blocking conflicts are reduced, and the concurrent performance of the database is improved.

The invention discloses a method for processing and building overhauling working lining bricks of a vertical type vacuum refining furnace hearth and belongs to the technical field of metallurgical furnaces. The method comprises the following steps of: pausing when building working lining bricks (5) to third or fourth working lining bricks far from locking bricks, and accurately measuring a height dimension (1) between an elevation position below 10 to 15 mm of a horizontal elevation of the plane of a flange (2) and the upper end of locking bricks (3); setting the third or fourth working lining bricks far away from the locking bricks as cut working lining bricks (4), and cutting the cut working lining bricks (4) by the height dimension (1) on a brick cutter; and directly building the cut working lining brick (4), the second working lining bricks (5) far away from the locking bricks, and the locking bricks (3) till completing the overhauling of the working lining bricks of the hearth. The method has the advantages of avoiding processing of the locking bricks during medium repair, effectively simplifying construction procedure, greatly lightening the workload of labors and improving working efficiency, along with relatively small workload.

The present invention relates to an input device for game machine. An input device for a game machine for inputting signals to a game machine using a computer, including: at least one control member projecting to the outside of a casing; a movement-transmitting member formed around the control member and operatively associated with the movement of an operating point of the control member, the movement-transmitting member being provided with a plurality of conductive elastic members; and a board provided in the casing and having formed thereon resistors corresponding to the conductive elastic members, the conductive elastic members changing the area of contact between the conductive elastic members and the resistors according to a direction of movement and a tilt angle of the operating point of the control member.

The invention relates to a method for controlling gas backflow in melting reduction smelting. Each DRI downcomer connected with a shaft furnace is mounted with a cold gas and nitrogen adding pipe which is provided with a control valve. The DRI downcomer is mounted with a temperature detection galvanic couple to detect gas temperature in the downcomer. Through inputting cold gas or nitrogen to the DRI downcomer, the temperature of the backflow gas in the DRI downcomer is controlled at 650-750 DEG C. The high temperature backflow gas which does harm to shaft furnace running is transformed into normally used reduction gas, which participates in reduction inside the shaft furnace to achieve control of the gas backflow. Conventional practice of suppressing backflow gas is changed by the present invention, adding powder to shaft furnace center is cancelled, and the backflow gas is dredged and used. Cold gas/nitrogen is fed into the DRI downcomer to reduce the temperature of backflow gas, improve dust distribution and enrichment condition in the shaft furnace, reduce shaft furnace differential pressure, improve gas utilization, prolong shaft furnace emptying cycle, reduce downcomer blockage frequency and damping down time, and improve operation rate and yield.

The invention discloses a millikan oil drop experiment instrument capable of generating tiny charged oil drops by utilizing compressed air flow and an experiment method. For the experiment instrument, an air compressor is adopted for generating compressed air flow, and the air flow is sprayed at high speed from an air pipe and enters an atomizing cup, so that oil liquid in the atomizing cup oscillates in the boiling state and is atomized into tiny charged oil drops. The oil drops enter an oil drop box, and are observed after amplification and shooting by a microscopic vidicon, by measuring the static balance voltage and uniform-velocity falling speed of the oil drops, the carried charge amount of the oil drops can be obtained through calculation. For the experiment instrument, the large number of tiny charged oil drops can be rapidly generated for experiment measurement, the millikan oil drop experiment instrument has the advantages that the experiment speed is improved, the consumable items are saved, the residue is reduced, the cleaning is convenient, etc., and the millikan oil drop experiment instrument is particularly suitable for physics experiment teaching needing multi-user repeated use.

The invention discloses a method of testing life cycle of an Nand flash, including the steps of establishing an Nand flash virtual bad block table; detecting the life cycle according to the virtual bad block table. The virtual bad block table is utilized to replace an original bad block table obtained by actual scanning in the prior art, life cycle testing is performed according to the virtual bad block table, and testing time is greatly shortened.

The invention discloses a mortar spraying robot for construction, which comprises a cart body, a hopper is fixed inside the cart, a cover is fixed on the upper end of the hopper, a feeding port is arranged on the cover, and a feeding port is arranged on the upper end of the cover. The middle part is installed with the motor A with the rotating shaft down. The motor shaft of the motor A passes through the cover and is connected with the shaft. The fan blade A is fixed on the side of the shaft close to the cover, and the fan blade B is fixed on the side of the shaft. , the fan blade B is located below the fan blade A, the bottom end of the shaft is fixed with a tapered auger, and the bottom of the cover is fixed with a nozzle A. The invention has a simple structure and a reasonable design. By adding a cleaning device, the material will not stick to the pipe wall, and through the stirring of the two fan blades and the spraying of high-pressure water, the hard block of the material is crushed, reducing the blockage of the device. At the same time, a tapered auger is set to increase the pressure and reduce the number of blockages. When one of the two augers is broken, the other can continue to work without affecting the construction speed.

The disclosed integrated device is composed of laser head, DC power source in high voltage, resistor and gas-extraction system. The laser head consists of blower fan, air passage, arc chamber, heat exchanger and optical cavity. Each part adopted in module structure is assembled in a sealed square box body. Discharge excitation for laser is DC discharge. Electrode structure adopted in sheet type electrode with wide anode bar makes discharge zone match to mode volume of cavity. Constant current technique in low resistance is adopted to reduce electric loss. Power source of using high frequency switch increases conversion efficiency for transforming and delivering electric power, and optical cavity is optimized to reach output of laser in low order modulo under high electro-optical conversion efficiency and high output power.

The invention discloses a blockage preventive device of a tobacco slicing machine. The blockage preventive device comprises a cutter, a worktable, a downstream machine, a barrier, a guide plate, a reset mechanism and an alarm mechanism. The cutter is positioned above the worktable, the downstream machine is positioned below the barrier, and the barrier is fixedly arranged on the lower side of theworktable; the guide plate is positioned on the right side of the barrier, only tobacco bales with the sizes smaller than or equal to approval standards are allowed to pass gaps between the guide plate and the barrier, the alarm mechanism is elastically connected with the guide plate by the reset mechanism, the reset mechanism can be driven by the guide plate to move rightwards to trigger the alarm mechanism if the guide plate is squeezed when tobacco bales with the sizes larger than the approval standards fall down, the tobacco bales with the sizes larger than the approval standards can fallon the downstream machine, and the guide plate can be reset by the reset mechanism. The blockage preventive device has the advantages that the blockage frequencies of the tobacco slicing machine can be effectively reduced by the blockage preventive device, accordingly, the production continuity can be improved, and the production efficiency of enterprises can be improved; alarm effects can be realized for blockage, accordingly, operators can be reminded of timely handling blockage, and material deficiency of production lines can be prevented.

The invention discloses a catalyst feeding programmed control system and method, and belongs to the technical field of program control. The system comprises a catalyst feeding pipeline (1), a separator (2), a stock bin (3), a vacuum pump (4) and a DCS program control unit (8), wherein the lower end of the separator (1) is connected with the stock bin (3) through a discharging pipeline (21), the discharging pipeline (21) is provided with a third control valve (31), and the separator (2) is connected with a gas pressurization pipeline (5); a gas purging pipeline (6) is connected to the third control valve (31), a purging electromagnetic valve (61) is arranged on the gas purging pipeline (6), a hole is formed in the top of the separator (2), a pressure transmitter (7) is installed in the hole, and a DCS program control unit (8) is connected with the first control valve (11), the second control valve (42), the third control valve (31), the fourth control valve (51) and the purging electromagnetic valve (61). According to the invention, the automatic unblocking of the system is realized by additionally arranging pressure interlocking and a purging gas circuit and redesigning an interlocking program.

The invention provides a high-efficiency low-scale polymerization inhibition process for extracting and separating C5 by a DMF (Dimethyl Formamide) method, and a used polymerization inhibitor is prepared from the following components in parts by mass: 100 parts of 4-hydroxy-TEMPO (Tetramethylpiperidinooxy), 60 to 100 parts of N, N-dimethylhydroxylamine, 70 to 90 parts of ethylene glycol di-tert-butyl ether and 70 to 100 parts of ethylene glycol diformate; a polymerization inhibitor only needs to be injected in front of DMF circulating solvent inlets of a first extraction tower and a second extraction tower respectively; the consumption of 4-hydroxyl-TEMPO in the polymerization inhibitor is low, but the byproduct yield of tar is not high, scaling is less and slow, and a filter is less and slow to block; and the maintenance period of the separation device can easily reach more than one year when the C5 raw material condition is better.