1339results about How to "Unique design" patented technology

A liquid pumping apparatus for pumping liquids, more specifically a linear peristaltic pump apparatus. The apparatus consists of a high durometer compressible elastomeric liquid flow tube (12), an infeed valve assembly (26), an outfeed valve assembly (38), an extensible and retractable actuator anvil (34) having a round surface which engages the flow tube (12) at all times, an opposed anvil (24.1) having a round surface in engagement with the flow tube at all times, the flow tube being held between the anvils (34, 24.1) in a slightly compressed state when the anvil (34) is retracted, and a control assembly (100) for causing the movable anvil to be sequentially extended and retracted to cause flow within the flow tube (12) from the infeed valve assembly (26) to the outfeed valve assembly (38). With this apparatus the lumen of the flow tube (12) to the sides of the anvils is not completely reduced to zero volume during displacement compression whereby gas embolisms do not erupt or explode when discharged. Two principal embodiments are disclosed, one having infeed and outfeed check valves which oclude the flow tube, and the other having check valves.

The invention relates to an NFC antenna structure for a metal back cover mobile phone. An NFC antenna with a coil form is arranged in a metal back cover of a mobile phone. The metal back cover of the mobile phone is provided with a concave groove used for blocking a vertex of the metal back cover of the mobile phone and a hole used for arranging a camera. The NFC antenna communicates with an external reader-writer antenna via the concave groove and the hole based on magnetic field coupling. The NFC antenna comprises an NFC coil and a ferrite magnetic sheet. The concave groove starts at one side of the metal back cover of the mobile phone and ends at the opposite side of the metal back cover of the mobile phone. The concave groove comprises two transverse grooves and two vertical grooves. The NFC antenna employs the opening for arranging the camera in the metal back cover of the mobile phone for radiation and the metal back cover of the mobile phone is provided with the concave groove, so that the vortex of the metal back cover is prevented from causing magnetic field interference to the NFC antenna and the excellent electrical performance of the NFC antenna and the reader-writer can be guaranteed during work.

The overall hydraulic electric forklift hydraulic system comprises the hoist oil cylinder, slanting oil cylinder formed slanting lifting device, steering device mainly made of the deflector and the steering oil cylinder, hydraulic motor, hydraulic motor brake and its speed regulating valve. The above mentioned three devices can get hydraulic energy form a generator driven gear pump, the said gear pump generated hydraulic energy divided into two ways, one passing through the optimal valve supplying to the said steering device and several valve controlled lifting device, the other way going to the control valve and converting brake valve drive device through change-over valve. It can replace variable pump for the control of the generator gear pump through electricity, getting rid of the low efficiency, big energy consumption, high oil temperature, long time damage to the hydraulic motor, traveling, and poor brake stability.

The invention discloses a testing machine for testing a crane scale and a method for disassembling and assembling a weight thereof. The testing machine for testing a crane scale comprises a position adjustment control device, a rack, a weight, a weight drive mechanism, a weight swing mechanism, a suspender and an anti-swing mechanism, wherein the weight swing mechanism comprises a weight swing mechanism shell, a motor No.3, a stop dog, a worm, a worm gear and a weight swing mechanism driving part, the worm and the weight swing mechanism driving part are installed in the weight swing mechanismshell and are in rotating connection, the worm gear is sleeved on the weight swing mechanism driving part and is fixedly connected with the weight swing mechanism driving part, and the worm and the worm gear are engaged with each other, the output shaft of the motor No.3 fixed on the weight swing mechanism shell is fixedly connected with the worm, the stop dog is installed in a through groove of the weight swing mechanism driving part, the weight swing mechanism is installed at the center of a middle cross beam of the rack, the weight swing mechanism driving part is sleeved on the suspender, and a through hole on the weight swing mechanism driving part is in clearance fit with the suspender. The invention also provides a method for disassembling and assembling the weight in the testing machine.

The invention discloses a tunable laser system, a acousto-optic tunable filter that utilizes frequency offset compensation. Precision and stability of the output wavelength are realized by a wavelength lock; the wavelength lock utilizes two separated cavity laser beam to avoid using a beam splitter, which reduces requirements to space comparing to a tradition wavelength lock, and running is more stable, and assembly easier. The acousto-optic tunable filter comprises a acousto-optic crystal and a acoustic wave transducer that are bond on surface selected by a crystal to generate acoustic wave;an optical reflector is used for reflecting the diffracted ray back to the acousto-optic medium; because the two incident rays are opposite relative to the acoustic wave propagation direction, the frequency offset generated by the two diffraction is compensated. The invention can be used to produce wideband tunable laser system for various applications with different laser gain medium, acoustic wave drive frequency and acousto-optic crystal.

The invention provides a garlic root cutter which belongs to the field of deep processing machines of garlic. The garlic root cutter comprises a stand and a chain wheel and chain transmission mechanism, wherein the chain wheel and chain transmission mechanism is installed on the stand; a material cup assembly is arranged on the chain wheel and chain transmission mechanism; the chain wheel and chain transmission mechanism is connected with a power mechanism and drives the material cup assembly to do rotating movement from back to front around a chain wheel; the front end of the stand is provided with a root cutting press wheel and a sawtooth blade which are connected with the power mechanism; one side of the root cutting press wheel is provided with a wheel cleaning device, and the rotating plane of the sawtooth blade is parallel to the upside of the running plane of the material cup assembly. The garlic of which the garlic root is upward is placed into a material cup of the material cup assembly when in use; and when the material cup is run from back to front, the root cutting press wheel presses the garlic, and the garlic root is cut by the sawtooth blade. Because the producing areas of the garlic are different, and the lengths of hair roots on the garlic are different, a hair root cleaning mechanism and a hair shearing mechanism are selectively arranged at the back of the root cutting press wheel. Compared with the prior art, the garlic root cutter has the advantages of great saving of manpower, high root cutting efficiency, low garlic loss rate, time saving, and the like and has unique design, skillful structure and environmental protection, water saving and labor intensity reduction.

The invention relates to a LED bulb having light on the back, including a lamp body, a lamp seat and a lamp head, the inner of the lamp body is provided with LED lamps, the shape of the lamp is protruding surface, inside which is partly provided with a convex mirror, or the outside is partly provided with curved surface. The convex side on the inner surface of the lamp protruding surface is coated with tapetum lucidum, which adds the reflecting effect. The invention has the following beneficial effect: through the convex mirror and the concave surface to reflect the LED light, the light can be reflected to the back of the lamp, thereby advancing the photometric brightness of the lamp back, eliminating the shadow to make the illuminating and decorative effect even better. The invention has simple structure, easy realization.

The invention provides a slope type medicament storeroom, which includes a frame and supporting beams. Each beam is separately fixed to the frame; U-shape medicament storing slots are connected with the supporting beam and form angle of 20 DEG with horizontal; a medicament discharging mechanism is disposed on the U-shape medicament storing slots, and convex tendons are arranged on surface of each U-shape slot touched with medicament box. Advantages of the medicament storeroom are that: medicament can be compactly stored, charge and discharge for medicament box can be fast and convenient, and usage is simple.

The invention provides an engine air cleaner, which comprises the following parts: an adsorbed layer casing, an adsorbed layer equipped in the adsorbed layer casing, wherein the absorbed layer includes a plurality of air flow channels, an integral absorbed agent arranged alternatively with the air flow channel, a plurality of wedge-shaped baffle plates arranged on the air flow channel. The improvement program still comprises the following parts: a pyramid air-in channel, a hydrophobicity polymeric film, a non-corrodible steel filter gauze, a pyramid air-out channel, a supporting frame or the like, wherein the absorbed layer is manufactured by the renewable, conveniently unpacking and changing and integral absorbed agent and is fixed in the supporting frame of the absorbed layer interior, the casing of the absorbed layer with the wedge-shaped baffle plate optimizes the flow characteristic of the air in order to reduce the resistance and noise of the air, the supporting frame, the cleaner casing, the wedge-shaped baffle plate, the integral absorbed agent seals separately with collar seal in order to avoid the air short circuit. The invention removes the gaseous impurity and the particulate effectively in the condition of reducing the air resistance as possible as we can.

The invention discloses an integrated-type high polymer grouting system which comprises a truck. An air compressor is installed on the truck. A first pneumatic diaphragm pump and a second pneumatic diaphragm pump are respectively connected with the air compressor through air ropes. A first storage vat and a second storage vat are further installed on the truck. The first storage vat is connected with the first pneumatic diaphragm pump through a feed delivery pipe. The second storage vat is connected with the second pneumatic diaphragm pump through a feed delivery pipe. A grouting matching instrument is further installed on the truck. A discharge port of the first pneumatic diaphragm pump and a discharge port of the second pneumatic diaphragm are respectively connected with the grouting matching instrument through the feed delivery pipes. A discharge port of the grouting matching instrument is connected with a grouting gun head through a feed delivery pipe. The integrated-type high polymer grouting system is unique in design, compact in structure, reliable in performance, easy to operate and also capable of conveniently and independently reaching a construction site, has the functions of fine matching, high-pressure mixing, automatic temperature-control pressure-control and the like, is offered to a high polymer grouting technology for protecting medium-sized and large-sized dams and restoring transportation infrastructures and buildings, and shows strong practicability and irreplaceability.

The invention provides a wearable device control implementation method. The method comprises steps as follows: acquiring data detected by an electro-cadiography sensor to determine a heart rate value, and acquiring data detected by an acceleration sensor simultaneously to determine activity parameters; judging whether the heart rate value and the activity parameters are matched with preset conditions; transmitting a reminding message through a remote interface when the heart rate value and the activity parameters meet the preset conditions. The invention further provides a wearable device control implementation device. According to the scheme, the physical condition of a user can be monitored, and the user's preference for the environment where the user is located can be judged.

The invention relates to an automatic charging equipment for an electric vehicle. The ground system includes a three freedom linkage delivery device and a charging plug. The X axis delivery unit comprises an X axis pulley and a motor for controlling the motion of the X axis pulley. The Y axis delivery unit includes a Y axis sliding piece and a motor for controlling the motion of the Y axis sliding piece. The Z axis delivery unit includes a charging plug hoist and a motor for controlling the motion of the charging plug hoist and mounted on the Y axis sliding piece. The Y axis delivery unit is installed on the X axis pulley. A charging plug is mounted on the charging plug hoist. The charging plug is provided with an infrared positioning collection tube and switches in a power box through a contactor. The vehicular system comprises a charging socket and an infrared positioning transmission tube. The charging socket is located on the bottom of the electric vehicle and provided with the infrared positioning transmission tube. The charging socket switches in an accumulator cell via electrical wires. The equipment is utilized in the areas of district, markets and the like and is a convenient and rapid charging mode.

The invention relates to a steel rail on-line wind-jet quenching heat treatment simulation experiment device, and belongs to the technical field of steel metallurgy. The experiment device is composed of the structures of: a Laval-type flat-slot nozzle system, a steel rail guiding system, a frame system, a valve system, a compressed air pipe system, a roller way system, a detection instrument system, a steel rail heating furnace system, and the like. With wind, water, heating furnace, and roller way conditions in an experimental innovation platform in metallurgical rolling, a steel rail on-line wind-jet quenching heat treatment simulation experiment device is designed and manufactured, and a steel rail on-line wind-jet quenching heat treatment simulation experiment method is developed. The method and the device are used for carrying out heavy rail full-length on-line quenching simulation experimental researches. The experiment method is simple and reliable. With the method, heavy rail full-length on-line quenching process research period can be greatly shortened, and process research cost can be reduced. The method is a feasible method of laboratory simulation research currently. With the device and he method, technical support can be provided for a heavy rail full-length on-line quenching production line.

The invention discloses a telescopic overall hoisting derrick device and a hoisting method thereof. The derrick body is divided into a derrick body upper section and a derrick body lower section, wherein the derrick body upper section is arranged in the derrick body lower section; a roller device is arranged between the derrick body upper section and the derrick body lower section; when the derrick body upper section completely retracts in the lower section and is positioned at a horizontal position, the overall gravity center of the derrick device is positioned at a central position of a derrick supporting table; a telescopic derrick driving device is arranged between the derrick body upper section and the derrick body lower section; and a derrick hoisting hydraulic cylinder is arranged on the derrick supporting table and drives the derrick body lower section to change from a horizontal state to a vertical state. The hoisting method comprises a mounting method, a detaching method and a hoisting method, wherein the mounting method is a sectioned hoisting mounting method. The derrick device is unique and ingenious in design, overall in hoisting, time-saving and labor-saving, and great detachment is not required, so that the using cost and the maintenance cost are greatly saved, and the using and mounting efficiency and the safety are improved.

A device used to secure an automobile catalytic converter. The invention deters a person from tampering with or stealing a catalytic converter. The device consists of at least four overlapping, and adjustable plates comprising an adjustable frame structure that clamp around the catalytic converter. Tightening of fasteners keeps the frame structure securely in position around the catalytic converter, preventing easy access to the catalytic converter. The frame structure is then secured to the automobile itself with a looped cable, which prevents easy removal of the catalytic converter.

The invention discloses an automatic printer for a vamp. The automatic printer comprises a combined rack body on which a working platform is arranged, wherein an annular conveyor belt and a driving device of the conveyor belt are arranged on the combined rack body, and an adhesion layer with changeable adhesion strength is coated on the surface of the annular conveyor belt; a material feeding mechanism is arranged below the combined rack body and is used for upwards propping against a printed object to press and adhere the printed object on the adhesion layer; and a printing mechanism is arranged above the combined rack body and is used for printing the printed object. According to the automatic printer for the vamp, which is disclosed by the invention, firstly the printed object is temporally adhered on the annular conveyor belt to be arranged and flattened and then is printed, secondly the printed object is automatically shoveled out of the annular conveyor belt by a material collection shovel, and finally product collection processing is carried out; and therefore, through the new conveying and printing operation manner, the printing precision and the printing quality of a printing mechanism are improved.

The invention discloses a vertical pipe production line. The vertical pipe production line is characterized in that: a core shaft support is arranged on a lower portion of a frame, a mold core shaft is erectly fixed on the core shaft support, a propulsion device connected with a first power generator is arranged on a lower portion of the mold core shaft; at least a support frame is fixed on the frame, a circular orbit and a second power generator are arranged on the support frame, the core shaft support is positioned in the center of the circular orbit, a circumferential yarn disk is arrange on the circular orbit and is connected with the second power generator; a circular dipping groove is arranged on the support frame approaching a circumference inside the circular orbit, a axial fiber position frame and a circumferential fiber position frame are distributed on the circular dipping groove; a product synchronization cutting apparatus is fixed on an upper end of the frame, the productsynchronization cutting apparatus is positioned above the mold core shaft. According to the present invention, the vertical pipe production line is adopted, such that circumferential winding of the continuous fibers and axial arrangement of the continuous fibers are combined well so as to improve product quality and processing stability.

A soap-dispensing faucet structure comprises an upright cylindrical faucet body, having a spout extending outwards at the front side, and a tube seat at one side of the lower section to which a core shaft, a locking cap, and a faucet handle are sequentially mounted thereto. The upper section of the faucet has an appropriate-depth receiving chamber to which a sleeve cover and a pump device are combined to form an individual soap-receiving accommodation space. The lower section of the faucet has a set of cold and hot water ducts and an outlet tube that are fluidly connected to the core shaft of the tube seat to provide another individual water-discharging chamber linked to the spout to form a water influx-and-outflow circuit to be switched on and off by the faucet handle, providing a concise and whole depth-extending visual effect, and easier assembly and maintenance of the soap-dispensing faucet thereby.

The invention belongs to the scientific and technical field of oral medicine and oral health, and particularly relates to an oral health-care agent capable of clearing away heat and toxic materials, and a preparation method thereof. The oral health-care agent contains a food-grade heat-clearing and detoxicating prescription, an anti-ulcer agent, a caries-prevention agent, a cell adhesion moisturizer, a natural antibacterial and anti-inflammatory agent and an oral health-care agent, preferably, the preparation further contains a preservative, more preferably, the preparation further contains apreparation-acceptable safety carrier or excipients; and all the ingredients are scientifically prepared and optimized to obtain a group of safety and multi-effect compositions which not only can clear away heat and toxic materials and is antibacterial and anti-inflammatory, but also can prevent tooth and periodontium and other oral diseases, and then a convenient and practical oral health-care agent is prepared by adopting a mild technological method. The oral health-care agent capable of clearing away heat and toxic materials not only has medicine efficacy, but also has the safety of health-care food, and is convenient to use, good in efficacy and fast in effect.

The invention discloses a gear shifting and displacement carbon-free trolley walking in an S-shaped path mode. The trolley comprises a trolley frame, a drive mechanism, a transmission mechanism, a steering mechanism and a gear shifting and displacement mechanism, wherein the drive mechanism, the transmission mechanism, the steering mechanism and the gear shifting and displacement mechanism are arranged on the trolley frame. Different from the prior art, the drive mechanism is connected with the transmission mechanism through a flexible cotton rope, the transmission mechanism is fixed to the trolley frame through a bearing block and connected with the steering mechanism through a drum shaft, front wheels of the trolley are supported unilaterally, and an angle fine-adjustment mechanism is in rigid connection with the steering mechanism. The gear shifting and displacement carbon-free trolley walking in the S-shaped path mode can walk in the S-shaped path mode when the distance between two barriers is within 700-1300 mm, and adjustable large-displacement walking can be achieved. The front wheels of the trolley are unique in design and good in removability; the front wheels are provided with axial positioning units, so that the running tracks of the trolley are uniform, symmetrical and high in precision.

The invention discloses a bicycle with a miniature box transmission on a middle axle. The bicycle comprises a frame device, a transmission device, a moving device and a safety device and is characterized in that: the middle axle of the frame device is provided with the miniature box transmission consisting of a box speed transformation device and a shifting device; the middle axle and an auxiliary axle are arranged in a box; a clutch sleeve and a driving gear are fixedly arranged on the middle axle; the right outer end of the middle axle is in movable fit with a middle axle driven gear and a chain wheel; a clutch sleeve and a driven gear are fixedly arranged on the auxiliary axle; and an auxiliary axle driving gear is fixedly arranged at the right outer end of the auxiliary axle and engaged with the middle axle driven gear. The bicycle has a small and compact structure, large transmission ratio range, high climbing capability, high level road speed, low production cost and high popularization value, is convenient to use, flexible and rapid to shift, easy to manufacture and easy to accept by bicycle enthusiasts and can particularly realize quick shifting under various road conditions.

A modular panel that can be used for multiple purposes and one that can be interconnected with other articles and with similar modular panels by means of a versatile fastening system. The modular panel includes a flexible planar body having spaced-apart edges, reusable fastening components positioned along at least one of the spaced-apart edges of the flexible planar body and a plurality of reusable fastening components positioned intermediate the spaced-apart edges of the flexible planar body.

The invention relates to a metal surface plated nickel / gold treatment method of a ceramic metalized substrate. The method comprises the following steps of: making lines on the ceramic metalized substrate; depositing a metal layer on the ceramic metalized substrate by adopting ceramic metal deposition technology so as to realize the communication of the lines; covering a deposited metal layer in the space between the lines by using nickel / gold plating-resistant special ink so as to form a nickel / gold plating-resistant special ink covering layer; removing residual nickel / gold plating-resistant special ink and the deposited metal layer on the surfaces of the lines; grinding a smooth metal surface with certain roughness for plating nickel / gold; removing the nickel / gold plating-resistant special ink covering layer; and removing the deposited metal layer. The invention also provides the ceramic metalized substrate manufactured by the method. The design of the method is unique and ingenious so as to overcome the defect caused by line surface chemical nickel-gold treatment of the metal layer; the weldability of a bonding pad and the reliability of a welding point are improved greatly; the problem of the noising of a cladding material and the like caused by plating the nickel / gold is solved; and the method is suitable for large-scale popularization and application.

The invention relates to a solid phase micro-extraction device and a method for preparing a fiber extraction head thereof. The solid phase micro-extraction device comprises a micro sample injector, the inside of a sample injector push rod is provided with a stainless steel capillary pipe, and the lower end of the sample injector push rod is inserted with the fiber extraction head. The preparation method for the fiber extraction head comprises: corroding one end of a metal fiber into aqua regia, while corroding the other end in HF; dissolving metal salt and organic ligand in a solvent in a hot water reaction kettle to obtain a reaction mixed liquor; and immerging the one end of the metal fiber corroded by the HF after pretreatment into the reaction mixed liquor, and controlling the temperature to between 50 and 220 DEG C and the time to between 6 and 90 hours to prepare the solid phase micro-extraction head of which the surface is grown with metal organic porous skeleton materials in situ. The solid phase micro-extraction device has the advantages of difficult damage of extracted fibers, high temperature resistance, low cost, good extraction performance, capability of replacing the extraction head, and large adsorption capacity. The method can grow porous skeleton materials with different structures on the extraction head aiming at different compounds so as to design high-selectivity enrichment to a target object, and has wide application prospect in the aspect of analytical chemistry.

A bead stringing apparatus that enables the user to quickly restring pre-strung beads, of the type that are on temporary strings, commonly available in bead stores. The connectors on the apparatus pull both ends of the temporary string in a taut position over an open work space. This aligns the pre-strung beads automatically along the temporary string allowing them to be restrung easily by a permanent string or wire. The user can quickly resting rows of the pre-strung beads by putting their wire through the aligned holes and when the wire exits a row of the pre-strung beads the user can add in other loose beads on their wire to go in and between the pre-strung beads. This allows the user to create infinite designs and patterns of beadwork. The open work space around the pre-strung beads provides flexibility and ample room for the newly incorporated loose beads to hang down onto the permanent wire out of the way of the beading process. The pre-strung beads can also be measured along the temporary string for bead patterning.

The invention provides a competitive type aptamer sensor for detecting oxytetracycline (OTC) in food. By using graphene oxide-polyaniline (GO-PANI) and horse radish peroxidase (HRP) as amplification strategies, the competitive type aptamer sensor is constructed for performing ultra-sensitive detection on the oxytetracycline (OTC). During construction, a GO-PANI film is dropwise added on the surface of a glassy carbon electrode, and a gold nano particle is deposited on the surface of the electrode through an electrochemical method. An OTC connection aptamer has high affinity and specificity to OTC, is connected with the OTC when being used as a capture probe, and is simultaneously connected with the HRP to form an HRP-Apt. A complete antigen (OTC-BSA (Bovine Serum Albumin)) as an immobilized antigen is connected with the surface of the electrode, and is combined with the HRP-Apt by competing with to-be-detected OTC which is added in later. The sensor connected with the HRP on the surface performs electrochemical measurement in a work solution containing HQ (Hydroquinone Quinol) and H2O2. The oxytetracycline (OTC) can be detected by using the change of an electrochemical signal. The competitive type aptamer sensor prepared by adopting the method is strong in selectivity, high in sensitivity, simple and rapid to operate, and suitable for detecting the oxytetracycline (OTC) in a food.

The invention discloses an ocean wave energy, wind energy and vibration energy self-electricity-generating device which comprises a special wave vibration energy device and a wind power generator and consists of a triangular floating ball rack or a multi-angle floating ball rack. A swingable rotating arm provided with a spring and a gravity ball are arranged at the lower portion of a moving point, the lower portion of each floating ball is connected with N-S-pole magnet, the lower portion of the magnet is provided with an induction coil, and the electricity-generating efficiency is high. In addition, the wind power generator and a light condensing solar diaphragm plate are further arranged at the upper portion of a floating body, and the comprehensive effect is played. The ocean wave energy, wind energy and vibration energy self-electricity-generating device can be used in a permutation and combination mode or in a parallel mode, is flexible to use, high in comprehensive efficiency, good in self-electricity-generating power and wide in application range, a novel industry is formed, a principle can be applicable to various generating devices, and the ocean wave energy, wind energy and vibration energy self-electricity-generating device can be used for generating novel automobile power and ship power and is economic and practical, huge in market prospect and suitable for all kinds of people.

The invention relates to an integrated submersible photoelectromagnetism river and lake water purifying method and a device thereof. In the method, a sewage inhalation device, a gas-water mixer and a purifier which are successively connected are arranged at the bottom of a stream, a lake, an artificial lake, a fountain or a scenery fish pond. A water outlet of the purifier is arranged at a position near the water surface of the river and lake water; sewage water to be purified is inhaled by the sewage water inhalation device and is sprawled into the gas-water mixer in a jet flow way and at high speed after being magnetized strongly by a magnetizer; the sewage water in a gas mixing chamber of the gas-water mixer is forced to be mixed with ozone in the gas mixing chamber to compose a gas-liquid mixed flow; the mixed fluid is injected into the purifier; the high speed jet is utilized to involve and inhale sewage water near a water inlet of the purifier into the purifier; a photoelectric combined catalytic oxidation treatment is carried out on the sewage water mixed with the ozone in the purifier; then, outlet water forms a level circulating water flow on the periphery of the water outlet of the purifier to realize gradient exchange purification of the whole river and lake water. The integrated submersible photoelectromagnetism river and lake water purifying method and the device thereof have the advantages of less land occupation, little investment and operating cost and good purifying effect.

The present invention relates to a device for testing digital communication bit error rate, comprising a communication interface module for connecting to external computers or controllers; a bit error processing module for analyzing bit error of a device or system to be tested, and transmitting result to an external computer or controller; a clock generating module for selecting operation clock according to instruction of the communication interface module, and supplying the operation clock to the bit error processing module; an opto-electrical / electro-optical converter module for converting optical signal from outside into electric signal and transmitting the same to the bit error processing module, and converting high-speed electric signal generated with the bit error module into optical signal to output; a software system module for controlling the integral testing device. The device, including a bit error testing function for electric interface and optical interface, can be used as independent testing apparatus, also can be remote controlled or integrated onto an automatic testing system.

Aiming at solving the problem that the current drug storage device can not realize intensive storage and the fussy fetching of drugs, the invention provides a roller type slope storage warehouse, comprising a shelf body, a chassis and a smooth stripe drug groove, wherein the smooth stripe drug groove is fixed with the shelf body through the front, middle and rear beams; the drug groove forms an inclination angle of 10-30 degrees with the horizontal surface; the drug groove comprises a roller, a shaft and aluminium sections; and the roller and the shaft form the bottom part of the drug groove. The tilting structure and the roller are convenient for the drugs to slide downwards depending on self gravity; when the drugs at the lower end of the drug groove is taken out, other drugs slide downwards automatically, which is convenient for fetching. The inclination angle between the drug groove and the horizontal surface is preferably about 15 degrees. The roller type slope drug storage warehouse in the invention can meet the requirement of hospitals on intensive storage and convenient fetching of the drug storage device.