132results about How to "Small vibration" patented technology

The slotting and milling cutter process for vane of integral vane wheel is completed in a numerically controlled machine tool with slotting and milling cutter advancing in the radial direction of the vane wheel and axial direction of the cutter. It has small radial force component caused by cutting, less vibration of the workpiece and the cutter, smooth cutting, small and controllable vane deformation, high machining quality and high machining efficiency. The present invention can meet the requirement of machining great diameter and high precision vane wheel product.

A novel clothes dryer belongs to the technical field of textile drying equipment and comprises a casing, an inner drum, an air duct, a semiconductor refrigerator, a condenser and an evaporator, wherein the inner drum is communicated with the air duct through a communicating pipe assembly, both the condenser and the evaporator are disposed in the air duct, a hot end of the semiconductor refrigerator is connected with the condenser through a first heat exchange pipe, a cold end of the semiconductor refrigerator is connected with the evaporator through a second heat exchange pipe, a drive device which enables air to flow inside the communicating pipe assembly, the air duct and the inner drum is disposed on the communicating pipe assembly, and a dewatering pipe is disposed on the air duct in a communicated manner. Air in the novel clothes dryer is reusable, the clothes drying time is short, and energy consumption is low. Low operational temperature effectively protects clothes from damage. Exhausting the used air indoors is not needed, so that indoor environment is guaranteed effectively, noise and vibration are low, and control is convenient.

The invention belongs to the washing machine field, in particular to a wash bucket for a double-mode washing machine, comprising a water holding bucket, a rotary drum and a clutch, wherein, the rotary drum consists of an inner rotary drum and an outer rotary drum; horizontal rotary shafts of the inner rotary drum and the outer rotary drum are coaxial; a vertical rotary shaft is arranged on the bottom center of the inner rotary drum; a horizontal rotary shaft is arranged on a horizontal axis of rotation of the outer rotary drum; a bearing is arranged at the bottom of the outer rotary drum; the inner rotary drum is pivotally arranged inside the bearing at the bottom of the outer rotary drum through the vertical rotary shaft on the bottom center of the inner rotary drum and combined with the outer rotary drums; water-sealed bearings are arranged on the side face and the bottom part of the water holding bucket; the horizontal rotary shaft of the outer rotary drum is pivotally arranged inside the water-sealed bearing on the side face of the water holding bucket; the clutch passes through the water-sealed bearing at the bottom of the water holding bucket and connected with the vertical rotary shaft of the inner rotary drum which is arranged inside the inner rotary drum and extended out of the bottom part of the outer rotary drum. During the washing process, the inner rotary drum and the outer rotary drum simultaneously rotate along the horizontal rotary shaft on the outer rotary drum, thereby washing mode of a drum-type washing machine is realized; during the wringing process, the inner rotary drum rotates at high speed along a shaft which is perpendicular to the ground, thereby wringing of an impeller washing machine is realized.

The invention relates to a permanent magnet system used in rotary magnetic refrigerator, wherein, the stator comprises a hollow cylinder permanent magnet and a magnetic conductive polar shoe; the hollow cylinder magnet is assembled symmetry around the central axle of the section of magnet via even permanent magnets; the magnetic direction of permanent magnet is decided by Halbach rotation theory; the magnetic conductive polar shoes are formed by two metals with better magnetic conductivity, while one side face is engaged with the wall of the chamber of permanent magnet, while another side is arc; two magnetic conductive polar shoes are contacted on the wall of chamber at the center of N and S polarities, with 180 degree spatial difference. The rotor comprises a rotary axle, a magnetic conductive iron corn and a magnetic medium; the rotary is cylinder; the iron corn is made from magnetic conductive magnet, as the cylinder with central hole or with cut-off two edges, sheathing the rotary axle while the rotary axle is at the center; two magnetic mediums are mounted on two outer arc faces of magnetic conductive iron corn, while the spatial positions are 180 degree different. The invention can be used as rotational permanent magnetic device.

The invention discloses a flexible MEMS resistance-reducing skin and a manufacturing method thereof used for reducing skin friction resistance during the advancing of on-water or underwater vehicles, which employs micro-fine resident bubbles to reduce resistance and belongs to the fields of micro-machinery and fluid dynamics. The upper surface of the skin is a surface layer coated with micro-pit arrays and processed by surface soakage; electrolytic anodes and cathodes of comb-shaped micro-fine planar metal, which are attached on an insulating layer, are arranged at the bottom of the micro-pits; a flexible substrate is positioned below the insulating layer; wire leading terminals for electrodes are arranged on the lower surface of the skin; and both the surface layer and the substrate are made by flexible materials. The overall thickness of the resistance reducing skin is at sub-millimeter level, and the skin is in the status of flexible film. The manufacturing method is an MEMS micro machining technique compatible with the flexible MEMS technology. The flexible MEMS resistance-reducing skin is coated on the outer surfaces of the on-water or underwater vehicles, with power thereof supplied by the on-water or under-water vehicles. Micro-bubbles stably residing in the micro-pits are formed by water electrolysis reaction to coat most parts of the surfaces of the on-water or under-water vehicles, thus realizing the function of reducing skin friction resistance.

The invention relates to a constant-temperature constant-humidity box for electrostatic spinning and a method for realizing constant temperature and constant humidity. The box comprises a work chamber, a processing chamber, and a refrigeration and dehumidifying apparatus, wherein the work chamber, the processing chamber, and the refrigeration dehumidifying apparatus are arranged in the box body. A circulating air duct is arranged in the work chamber; and an inlet and an outlet of the circulating air duct are connected with the processing chamber. The refrigeration and dehumidifying apparatus includes semiconductor refrigeration plates; and a refrigeration end of each semiconductor refrigeration plate is arranged in the circulating air duct. And an exhaust fan is arranged at the inlet of the circulating air duct. According to the invention, the semiconductor refrigeration plates are used for carrying out cooling and dehumidification on recirculating air; and the recirculating air is recycled continuously in the processing chamber and the work chamber under active suction of the exhaust fan and the effect of the circulating air duct, thereby controlling the humidity and temperature in the processing chamber. Because vibration and noises of the exhaust fan and the semiconductor refrigeration plates are low, the provided constant-temperature constant-humidity box is especially suitable for precise electrostatic spinning. The box and method can be applied to temperature and humidity control of electrostatic spinning.

Disclosed are an auxiliary washing machine and a clothes treatment apparatus using the same. The clothe treatment apparatus includes a main washing machine configured to treat laundry and an auxiliary washing machine located at one side of the main washing machine. The auxiliary washing machine includes a frame defining an accommodation space, a drawer configured to be accommodated in the accommodation space, the drawer defining a space for storage of wash water, a rotating structure placed within the drawer, the rotating structure having a rotating shaft penetrating the drawer so as to treat laundry, a suspension assembly configured to support vertical load of the rotating structure such that the rotating structure is supported to float with respect to the drawer and to alleviate horizontal vibration of the rotating structure, and a front panel located in front of the drawer, the front panel defining a front external appearance of the auxiliary washing machine.

The invention relates to a household miniature oil press, which comprises an electric device and an oil pressing device, wherein the electric device is provided with a motor and a reduction box. The motor transmits power to the reduction box through a transmission belt and a transmission wheel, and then the power is transmitted to the oil pressing device after deceleration by the aid of the reduction box. The oil pressing device is provided with a feeding cylinder, a variable-section spiral propulsion shaft and an oil pressing cylinder, wherein the oil pressing cylinder is fastened onto the feeding cylinder, the variable-section spiral propulsion shaft is mounted in the feeding cylinder and the oil pressing cylinder, and a connecting shaft at the front end of the variable-section spiral propulsion shaft is connected with an output shaft of the reduction box. Compared with the prior art, the household miniature oil press has the advantages that materials do not need to be fried, the household miniature oil press is small in size, simple and convenient in operation, high in oil yield, stable and reliable in operation and low in noise and vibration, electricity is saved, the rotating thrust of the miniature high-speed motor is used for replacing partial pressing force, and torque force needed by pressing is easily realized.

The invention relates to the field of metal pressure moulding and provides an overlarge type ring rolling machine which has large rolling force, good rigidity, high processing precision, high processing efficiency and low processing cost and can be suitable for the manufacturing requirement on a large cylindrical section. A stand of the overlarge type ring rolling machine comprises a drive side stand and an operating side stand which are longitudinally and oppositely arranged, both ends of each roll are supported, and axes are horizontally arranged; a drive roll is arranged at the lower part of the stand, and a core roll is positioned on the drive roll; at least one of double axial directions of the core roll is set to be a drawing direction of the core roll, one end of the core roll points to the other end along the drawing direction, the starting point end is a suspending end, and the terminal point end is a drawing end; a drawing unit comprises the core roll and a drawing end core roll bearing seat thereof or the core roll and core roll bearing seats at both ends of the core roll; the overlarge type ring rolling machine is provided with a roll drawing mechanism for doing reciprocating motion along the drawing direction of the core roll; and the roll drawing mechanism is provided with a detachable type fixing structure of the drawing unit. The invention is suitable for producing a large cylindrical section with large axial size, weight and wall thickness in the fields of large nuclear power, petrochemical container, aerospace, and the like.

The invention discloses an overhead single-track train system, which is a single-track train running between an upper and a lower auxiliary main single tracks and an overhead single-track system in which an upper and a lower rows of multiple tracks formed by two pairs of main auxiliary single tracks arranged on both sides of the same I-shaped beam. The single-track train is a light main auxiliary single-track train which consists of narrow train body with small cross section, a plate-shaped shock absorber, a main track wheel motor directly driving a main track wheel, an auxiliary wheel in parallel with the train and a small single main track wheel for bearing; the main structure of the overhead single track is a main bearing beam with I-shaped cross section, which consists of an I-shaped upper flange of girder, a horizontal lower flange and a middle vertical wall; both the upper and the lower flanges are structures with thick root and thin flange edge; the middle vertical wall is provided with a structure hole; the I-shaped beam of the upper flange is formed by an auxiliary track support arm, in which the main body is a reversed T-shaped main beam; the T-shaped beam structure is the same with a corresponding part of the entire I-shaped beam; the main single tracks are paved at the edge of the lower flange; the auxiliary single tracks are arranged on the edge of the upper flange or the top of the single-track support arm; both ends of the I-shaped beam are supported by a T-shaped pier; the invention is characterized by low cost, low energy consumption and low noise.

The invention relates to a washing machine, in particular to a double-mode washing machine and a washing method, wherein, during the washing process, a rotary drum of the washing machine rotates along a horizontal rotary shaft, and clothes washed are driven by the rotary drum and continuously lifted and thrown in the rotary drum and lifted and thrown again, and then the clothes are thrown and washed repeatedly; during the wringing process, the rotary drum rotates at high speed along a shaft which is perpendicular to the ground and the clothes are dried. The washing process is designed by imitating the principle of a mallet striking the clothes, and the rotary drum is driven to rotate along a shaft in parallel with the ground and by utilization of mechanical power of a motor; the clothes are continuously lifted and thrown in the rotary drum and lifted and thrown again, and repeated motion is performed, thereby the invention has the advantages of non winding, even washing and small abrasion during the washing process. During the wringing process, the rotary drum rotates at high speed along the shaft which is perpendicular to the ground and moisture is made to be away from the clothes, thereby both noise and vibration are low. Moreover, due to removal of a damping block, the invention has the advantages of light weight and convenience in transportation and movement when users use the washing machine.

The present invention provides a vehicle braking composite material reinforced by confusion of natural fiber and crystal whisker and preparing method thereof. The raw materials of composite friction material is composed of bamboo fiber, phenolic resin, magnesium sulfate crystal whisker, steel fiber, copper powder, graphite dust, pyrophyllite powder, aluminum oxide, iron oxide, barium sulfate and zinc stearate. The preparing method comprises the following steps: preprocessing the raw materials, mixing the raw materials, hot pressing shaping and heat processing. The invention uses the bamboo fiber with low cost for reinforcing the phenolic resin. The proper amount of wear-increasing agent, anti-wear agent and filling agent for exerting the cooperative coupling function among the substrate, the fiber/crystal whisker and filling agent, thereby obtaining the novel vehicle braking composite material which has the advantages of stable friction coefficient under different temperatures, low wear rate, high heat fading resistance, excellent braking effect, shock absorbing, noise reduction and low cost.

The invention discloses a pulsator washing machine top cover with dampers. The pulsator washing machine top cover with the dampers comprises a top cover body and a folding cover, wherein the dampers are respectively arranged on two sides of the folding cover; one damper is a hydraulic type rotary damper, and the other damper is a spring type rotary damper. The torque produced by the spring type rotary damper at an initial phase is smaller, and due to the smaller torque, the initial speed of the folding cover is faster when the folding cover rotating downwards at the initial stage of the closure of the folding cover, so that the closure time of the folding cover is saved; larger torque is provided for the later period of the closure of the folding cover, so that the closure speed of the folding cover is slowed down, and the hidden danger that hands of customers can be injured due to overfast speed is avoided; while the hydraulic type rotary damper is good in stability and smaller in vibration during the folding cover rotary process, so that the folding cover can be downwards rotated to the closure state stably and quietly. According to the pulsator washing machine top cover with the dampers, the different dampers are adopted, and the advantages of a spring type rotary damper and a hydraulic type rotary damper are reasonably combined, so that the two dampers are mutually complemented to achieve better an automatic folding cover buffer closure effect.

The invention discloses a magnetic refrigeration cooling device and control system which comprises a magnetic refrigeration system, a cooling system and a driving control system. The magnetic refrigeration system comprises a magnetic field system, a magnetic working medium device, a refrigeration end and a heating end, a magnetic working medium is placed into the magnetic field system, the magnetic torque of the magnetic working medium is neat or disordered along with change of a magnetic field direction, the cooling system comprises a pump, a disk seamless cooling pipeline, a disk seamless heat absorption pipeline, a draft tube and cooling liquid, and the cooling liquid circulates in the pipeline in a reciprocating manner under driving of the pump. By the aid of a single-chip microcomputer in the adaptive on-off driving control system for an intelligent temperature control switch, on one hand, periodic change of the magnetic field system is controlled, on the other hand, the pump is controlled to drive the cooling liquid to periodically and circularly flow, the cooling efficiency of the system is higher than that of a traditional single cooling system by the aid of magnetic refrigeration technology, magnetic leakage can be effectively decreased, a cooled part can be intelligently cooled, energy is saved, environments are protected, pollution is avoided, and noise is quite low.

The invention discloses a manufacturing method for an automobile transmission gear, and relates to the field of manufacturing of automobile parts. The method comprises the following steps: (1) blank forging, (2) spheroidizing annealing, (3) turning machining, (4) hobbing, (5) gear shaving, (6) carburization, (7) quenching and tempering and (8) grinding machining. According to the method, spheroidizing annealing treatment is adopted, so that the cutting performance of the gear is improved, a structure with spheroidized or granular carbide uniformly distributed on a ferrite substrate is obtained for preparation for subsequent heat treatment; a gas carburization method is adopted, and volatile kerosene is used as a carburizer, so that carburization effects are effectively improved, the thickness of a carburized layer is increased, the surface of the gear is hard and wear-proof, and high toughness of the core of the gear is maintained; quenching and tempering heat treatment is adopted after carburization, so that the carburization effects are further consolidated, and the mechanical performance of the gear is improved.

The invention discloses a split wall-mounted type air-conditioner indoor room, which comprises a main surrounding frame, a front-surface framework, a heat exchanger and a control box, wherein the front-surface framework is positioned on the main surrounding frame, the heat exchanger is arranged behind the front-surface framework, the control box is positioned on the lateral surface of the heat exchanger, and a heat-exchanger cooling-medium pipe cover for preventing the condensed water of a cooling-medium pipe from dropping onto the control box is sleeved on the cooling-medium pipe on the end surface of the heat exchanger positioned between the heat exchanger and the control box. A control-box cover is formed by being integrated with the heat-exchanger cooling-medium pipe cover, a baffle plate is formed between the heat-exchanger cooling-medium pipe cover and the control-box cover, and the heat-exchanger cooling-medium pipe cover and the control-box cover are divided into respectively-independent cavity bodies through the baffle plate. Through the split wall-mounted type air-conditioner indoor room, the hidden fire danger of air-conditioner operation is eliminated: through the use of the heat-exchanger cooling-medium pipe cover, the condensed water on the surface of the cooling-medium pipe can not flow onto electrical-appliance components, such the control box and the like. The direct contact of a heat-exchanger fin and the main surrounding frame is avoided, and the severe phenomena of icing and the like are prevented from being caused.

The invention relates to a yaw speed reducer of a wind power generator. Four-stage satellite transmission structures are arranged in a box and are connected with each other to be transmitted to an output gear shaft in sequence; a motor flange is connected to the upper end of the box; the output gear shaft is arranged in a support body through an upper bearing and a lower bearing and is sealed by an oil seal base; a first-stage internal gear ring is connected into the motor flange through bolts; a motor input connection sleeve is arranged in the motor flange through a bearing; the number of theinternal teeth of the motor input connection sleeve is the same as the number of the external teeth of a first-stage sun gear; and the internal teeth of the motor input connection sleeve and the external teeth of the first-stage sun gear have the same modulus and the same pressure angle of 20 degrees and are in mutual meshing transmission. The yaw speed reducer has compact structure, reasonable design, good uniform-loading effect, strong bearing and impact resistance capacity, good sealing performance and a uniformly-forced satellite gear meshed with the floating sun gear, is convenient to make and not easy to cause the environmental pollution and runs stably, thereby meeting the requirements of the clients.

The invention discloses a vector control AC frequency-variable speed regulation system of an electric automobile, which comprises a DSP controller, a reverse rotation converter module, a two-phase/three-phase AC converter module, a PWM converter, a three-phase AC induction motor, a magnetic flux linkage observer, and a battery pack; wherein, a control system conducts the control by means of speed and magnetic flux linkage closed loop, and a magnetic flux observer uses a current structure; the amplitude and phase of the magnetic flux of a rotor are solved by using three-phase stator current and the rotation speed of the motor, and the field orientation is realized; as the asynchronous motor is a nonlinear link coupled by multiple variables, decoupling and linearization can be achieved via the filed orientation, and therefore system calibration can be performed to obtain the desired dynamic performance. Therefore, by means of comparative and comprehensive researched into the direct torque control technology and vector control technology, the vector control AC frequency-variable speed regulation system has the advantages of solving the key technical problems of the frequency-variable speed regulation of the driving system of an electric automobile, and providing a more efficient technology for the driving system of the electric automobile.

The invention provides a vibration electric hammer, wherein a drill sleeve is fixedly mounted at a front end of a cylinder body; an impacting hammer is mounted on a proper position on a rear part of the drill sleeve; a compression spring is mounted the proper position of a drive piston; the drive piston and the compression spring are mounted in the cylinder body at the back of the drill sleeve; an air hole is arranged on an upper surface of an outer circle of the cylinder body; the drive piston can seal the air hole at a free state; large bevel gears are fixedly mounted at the proper position of the cylinder body; the large bevel gears, small bevel gears, large gears, small gears and a motor sequentially form a drive chain relationship; the piston is mounted at the proper position at the back of the cylinder body; a connecting rod iron core is connected with the piston via a pin shaft; and an electromagnet is fixedly mounted in a shell at the proper position at the back of the cylinder body.

The invention discloses a direct-driven permanent-magnet motor. The direct-driven permanent-magnet motor comprises a stator and a rotor, wherein the stator comprises a water jacket engine base and a stator iron core, the stator iron core is fixed on the water jacket engine base, a plurality of annular opening grooves are formed in a surface of the stator iron core according to a rule, stator windings are arranged in the opening grooves, the rotor comprises a rotor body with a support and a rotor fan, the rotor body comprises a rotation shaft and a rotor iron core, the rotor iron core is arranged on the rotation shaft and is formed by laminating a plurality of fan-shaped rotor punching sheets in a staggered way, a plurality tapered grooves are formed in the outer circumference of each fan-shaped rotor punching sheet, and T-shaped magnetic steel with a tapered cross section is arranged in each tapered groove. In the direct-driven permanent-magnet motor, the stator windings uniformly generate heat, the magnetic steel is simple and reliable in fixing, a glass fiber or a jacket sleeve is not needed to be bonded, the rotor body and the magnetic steel are low in heat generation, and the reliability and the safety of the magnetic steel are improved; and meanwhile, the motor process is further simplified, the motor cost is reduced, and the market competiveness of a product is improved.

The invention provides an integrated power driving system for a vehicle, which comprises a motor (1), a transmission (2) arranged at the output end of the motor (1), and an inverter (3) arranged at the other end, opposite to the output end, of the motor (1), wherein the motor comprises a motor shell (11), a front end cover, a rear end cover and a stator assembly (10) and a rotor assembly (14) accommodated inside the motor shell (11); the transmission (2) is provided with a transmission shell, the transmission shell comprises a transmission semi shell (12) close to the motor (1), and the transmission semi shell (12) is formed to be the front end cover suitable for the motor (1); the inverter (3) comprises an inverter shell (13), a power module (31) and an inverter end cover (32), and the inverter shell (13) is formed to be the rear end cover suitable for the motor (1); and the inverter shell (13) and the transmission semi shell (12) are arranged on the motor shell (11) via a fastener. The power driving system is compact in structure and low in manufacturing cost.

The invention discloses an electronically-controlled type automatic rice seedling disc supply machine. The electronically-controlled type automatic rice seedling disc supply machine comprises a rack, a rack support, a guide plate, a control box, a rubber roller wheel conveying mechanism, a disc supply mechanism and a sensing detection mechanism; and the rack support is arranged below the rack, the guide plate is arranged on the rack, and the control box is arranged at the bottom of the rack. The electronically-controlled type automatic rice seedling disc supply machine is reasonable in design and high in adaptability and saves cost; the electronically-controlled type automatic rice seedling disc supply machine which is small in vibration and impact and stable is adopted, the automatic disc supply operation on soft and hard seedling discs is achieved, and a steering engine and a control system which are small in vibration and stable in disc placement are selected for achieving electronic control; and by means of the electronically-controlled type automatic rice seedling disc supply machine, the automatic degree of a rice seedling disc seedling raising and sowing production line is improved, the labor intensity of seedling raising by peasants is reduced, and the production efficiency of the seedling raising production line is improved.

The invention relates to the field of food processing, and specially relates to an automatic intelligent noodle processing robot, which comprises a flour feeding device, a water feeding device, a stirring roller, a noodle guiding device, a noodle pressing device, a noodle cutting device, and a touch control screen. The stirring roller is connected to the flour feeding device and the water feedingdevice. A stirring screw rod is arranged in the stirring roller. The water feeding device is connected to an electric heating device. The noodle guiding device is arranged in the outlet of the stirring roller body. The noodle pressing device is arranged in the outlet of the noodle guiding device. The noodle cutting device is arranged in the outlet of the noodle pressing device. The touch control screen is connected to and controls the flour feeding device, the water feeding device, the stirring screw rod, the noodle pressing device, and the noodle cutting device. The robot has the advantages that the kneading, noodle pressing, and noodle cutting steps are integrated, and intelligent automatic noodle processing is realized.

Disclosed is a laundry treatment apparatus including a first cabinet, a first drum provided inside the first cabinet for receiving laundry therein, a first drive unit for rotating the first drum, a first controller for controlling the first drive unit, a second cabinet located under the first cabinet and having an introduction/discharge opening, a drawer provided so as to be discharged from the second cabinet through the introduction/discharge opening, a second drum provided inside the drawer for receiving laundry therein, a second drive unit for rotating the second drum, a second controller for controlling the second drive unit, and a remote controller for transmitting a control signal to the second controller via wireless communication.

The invention discloses a bionic hummingbird ornithopter. Low-frequency swinging of wings of the ornithopter is used for providing enough force so as to enable the bionic hummingbird ornithopter to complete actions such as suspension, advancing and retreating. Force provided only by one motor drives the wings to be flapped at the same time through a gear set and a connecting rod, two elastic rodsare controlled cooperatively through two steering engines, the state of the two wings is changed through changing of the forms and the positions of the elastic rods, so that the magnitude and the direction of resultant force generated by the pair of wings are controllable, and linear and variable-direction flying of the bionic hummingbird ornithopter is realized. The bionic hummingbird ornithopteradopts lithium batteries with the large energy density for power supply, the batteries and flexible battery connecting rods of the batteries can cooperatively control the system so as to balance thegravity center of the system and reduce system vibration, so that the system is stable and reliable. According to the bionic hummingbird ornithopter, the bionic attitude flight of the small-mass ornithopter is realized by utilizing an uncomplicated structure, the flying action can be stably and reliably realized, and the bionic hummingbird ornithopter promotes the development of bionic aircrafts.

The invention discloses a movable type laboratory waste transit system and relates to the technical field of laboratory waste treatment equipment. The movable type laboratory waste transit system consists of a box body 7, an exhaust fan, a refrigerating plant, a sprinkling cooling device, a personal washing device 16 and a protective article cabinet 5. The movable type laboratory waste transit system is characterized by being fireproof, explosion-proof, leakage-proof and anti-static, being low in noise and the like, can realize all-weather intelligent exhaust purification and temperature control, can meet the transit and storage safety and environment-friendliness requirements of laboratory wastes, has the characteristics of safe use and the like, and can be used for temporarily storing various wastes produced in laboratories.

The present invention describes a uni-axial screw pump (1) to convey various viscous fluids with high pump efficiency wherein restraining devices restrain the fluid' s tendency to rotate around the axis (6) as the rotor (3) rotates. As a result all the fluid trapped between the helical thread (5) and inner surface of inner cylindrical casing (10) is forced in the axial direction towards the discharge end. It is simple in structure and small in external dimension. It can also be employed as hydraulic turbine, thermo motor, liquid motor, extruder, molder and etc. The said screw pump is characterized in that the thread (5) of the screw rotor (3) is disconnected perpendicularly to the axis to make a plurality of thread sections, a plurality of annular restraining devices (7) being inserted in the annular gaps formed between said disconnected thread sections (5), the said annular restraining devices (7) having restraining elements (9) and openings (8) for the fluid to be conveyed through, inner cylindrical sections (10) being axially disposed between the said inserted annular restraining devices (7) to enclose the screw rotor (3).

The invention discloses a transmission gear of an automotive instrument motor, which comprises a motor driven pinion, a middle gearwheel, a middle pinion and an output gearwheel. The middle gearwheel and the middle pinion are coaxial gears, the driven pinion and the middle gearwheel are meshed, the middle pinion and the output gearwheel are meshed, the driven pinion and the middle pinion have the same outline structure and are named as pinions, the middle gearwheel and the output gearwheel have the same outline structure and are named as gearwheels, the outline lines of the pinions are curves which are symmetrical along an axis OA and consist of six sections of tangential circular arcs, and the outline lines of the correspondingly meshed gearwheels are curves which are symmetrical along an axis OE and consist of five sections of tangential circular arcs; and the pinions and the gearwheels are meshed to work. The transmission speed ratio of the transmission gear is large and can reach 30 to 1; the tooth number of the pinions can be six so as to ensure a small integral structure; and when the gearwheels and the pinions are in meshed transmission, the transmission is smooth, and the vibration and noise are low.

The invention relates to an all-round verifying device for pressure instrument equipment. The all-round verifying device integrates a verifying device for hydraulic instrument equipment and a verifying device for air pressure instrument equipment in a combined mode so that the all-round verifying device can have the functions of verifying the two kinds of equipment. Control is performed through one same control system, a data processing module is assembled, so that collecting, processing and report generating of verification data are finished, and the device is high in automation degree, flexible in using and suitable for measuring external field pressure and particularly for verifying a pressure instrument of equipment in a guarantee for troops to carry out tasks in an unhindered way.

The invention relates to an engine and discloses a rotary-cylinder rotor engine, which comprises a shell and a rotor, and is characterized in that: the inner wall of the shell is round, an air-inlet notch and an air-discharging notch are arranged on the shell along a circumferential direction, the inner wall of the shell is provided a hole for installing a spark plug, and an inner gear ring is arranged in an end cover on the lateral surface of the shell; the rotor is of an annular structure, three cylinder bodies which are in star-shaped uniform distribution at an angle of 120 degrees are arranged in the rotor, a piston is arranged in each cylinder body, a crankshaft connecting-rod mechanism is installed at the center of the rotor, one ends of three connecting rods are installed on a connecting-rod pin on a crankshaft, and the other ends of the three connecting rods are respectively connected with the three pistons in the rotor; and the rotor is driven to rotate along the same direction by the crankshaft through a transmission mechanism. The rotary-cylinder rotor engine has the advantages of simple and reliable structure, intensity work doing, high power, small size, low oil consumption, small noise and small vibration and can be used for replacing ordinary reciprocating-type engines and rotor engines.