238results about How to "Low fluid resistance" patented technology

The invention discloses a proportional electromagnetic valve for an electrically controlled high-pressure common-rail fuel injection system of a diesel engine and relates to an electromagnetic valve. A position at which a fixed iron core (8) and a movable iron core (3) of the electromagnetic valve attract each other is a conical polar plane. The fixed iron core (8), the movable iron core (3), a guide pipe (18), a spiral spring (15), an electromagnetic coil (4), a square iron core (19), a shell (14) and a valve body (1) jointly form the electromagnetic valve in an assembling way. When driving current is input into the electromagnetic coil, a magnetic field is generated through a magnetic path in the valve, electromagnetic force with magnitude which is in proportion with the magnitude of the driving current and is not related to a stroke is generated relative to the movable iron core, the movable iron core is enabled to overcome spring force to move, the movable iron core stops moving at a balance point of the two kinds of force and therefore is kept at a stable position, and the movable iron core can proportionally and continuously move according to the magnitude of the driving current to control the opening of the valve. Under complex working conditions under which the diesel engine works, the electromagnetic valve not only can stably control the on/off of a fuel path, but also can accurately and proportionally control the flow of the fuel path according to the driving current.

A shock absorbing device uses a damper including a cylinder enclosing a viscous fluid; a piston rod; and a piston dividing the interior of the cylinder in two axially separated parts. The piston is connected to the piston rod and has an orifice communicating the two parts. The piston includes an inner member integrally connected with the piston rod, and an outer member disposed about an outer perimeter of the inner member and configured to be axially movable with respect to the inner member. The inner and outer members are configured to define a gap therebetween through which the viscous fluid can flow, and to be biased away from each other by a spring disposed therebetween. The inner and outer members are arranged so that the gap is reduced as the amount that the inner member protrudes into the outer member increases, to thereby define a variable orifice.

A pump according to the present invention has a circular diaphragm 4 placed at the bottom of a casing 2. At the bottom of the diaphragm 4, a piezoelectric element 6 is installed in contact with the diaphragm 4. A narrow space between the diaphragm 4 and the top wall of the casing 2 constitutes a pumping chamber 8. An inlet flow path 12 and an outlet flow path 14 are open to the pumping chamber 8, wherein a check valve 10 is installed in the inlet flow path 12. Immediately downstream of the pumping chamber, the outlet flow path 14 has a narrow segment 16. The narrow segment 16 of the outlet flow path has ½ the diameter and ¼ the cross sectional area of the outlet flow path 14. The outlet flow path 14 has a return inlet 22, which is connected to a return outlet 23 in the inlet flow path via an active valve 24. The active valve 24 is opened and closed freely by an actuator 26 made of shape-memory alloy.

The invention discloses a deepsea manned submersible synchronous folding horizontal stabilizer, which comprises a manned submersible body.A vertical stabilizer is arranged at the tail of the manned submersible body, horizontal stabilizersare symmetrically arranged at the two ends of the vertical stabilizer, the vertical stabilizer is of a fixed structure, and the horizontal stabilizersare of movable structures;open grooves are symmetrically formed in the tail of the manned submersible body, and the horizontal stabilizersextend and retract at the positions of the open grooves; the deepsea manned submersible synchronous folding horizontal stabilizer is compact and reasonable in structure and convenient in operation, and the retracting and extending of the two horizontal stabilizers are synchronously controlled through the telescopic movement of an oil cylinder. During floating and diving of a submersible, the horizontal stabilizersare retracted into the interior of the manned submersiblebody so as to reduce fluid resistance and increase the floating and diving speeds of the submersible. When the manned submersible dives to the bottom of the sea and sails,the horizontal stabilizers can be extended to ensure sailing stability of the manned submarine.

The invention discloses a flying device which comprises a device main body, a sealed inner shell located on the device main body and an outer shell located outside the inner shell. An air channel is arranged between the inner shell and the outer shell; the outer shell located on the upper part of the device main body comprises a plurality of spoilers, and a guide inlet and a guide outlet which are communicated with the outside are arranged between every two spoilers or on each spoiler per se. The air channel is communicated with the guide inlet and the guide outlet respectively; the surface path passed by fluid on the external surfaces of the spoilers is longer than the air path in the air channel on internal surfaces of the spoilers in a corresponding zone, therefore, a high pressure zone produced by low flow rate in the air channel is transferred to a low pressure zone produced by high flow rate outside the outer shell from the guide outlet; and the surface path passed by fluid on the outer shell part at the upper part of the wing is longer than the surface path of the outer shell part at the lower part of the wing in the flying direction. The invention can increase the speed ofthe flying device and can save energy.

The invention provides an inflatable automobile which is characterized in that the lift force is eliminated by changing the fluid distribution state between the upper part and the lower part of an automobile to change the traditional method that the automobile overcomes the lift force by the weight in hundred years, and therefore, the weight factor does not need to be considered. The bodywork of the automobile is made of light materials; for example, the inflatable layer of the inflatable automobile can be integral or local and can be an outer layer or an inner layer, and meanwhile, a lead-in opening is communicated with a fluid passage, which can greatly reduce the fluid resistance when the automobile runs. In the inflatable automobile which is the lightest in the world, due to the fact that a path through which the fluid of the lower part of the automobile flows is longer than the upper part, and thereby, the pressure of the upper part of the automobile is slightly higher than that of the lower part, and like an invisible hand stably presses the shell of the upper part of the automobile; and compared with the traditional automobiles, the inflatable automobile is more stable and saves more energy when running at high speed. Because the bodywork is the inflatable layer, when an accident happens unfortunately, the self safety is ensured, and meanwhile, the safety of hit automobiles or pedestrians is also increased, the inflatable automobile saves the most energy in the world and is extremely safe.

The invention discloses an ascending and descending dual-buoyancy regulation sinking bed-floating bed water quality purification device. A sinking bed system is provided with a hollow sinking bed water level regulating framework; a circle of hollow outer rectangular framework is tightly fixed on the periphery of an upper rectangular frame of the sinking bed water level regulating framework; water is injected into the sinking bed water level regulating framework and the outer rectangular framework, so that the sinking bed system reaches a fixed planting water level or a growth water level. The device is characterized in that a floating bed system providing region is added to the periphery of a sinking bed; the system balance is controlled through the peripheral single floating bed system; the bed body stability is enhanced, so that the influence of environment factors on the sinking bed and a floating bed is reduced. The water level of water sinking plants in the water is regulated through the water irrigation and water pumping effect inside the sinking bed and the effect of a regulating rope; by controlling the growth position of the water sinking plants in the water, the most proper growth water level of the water sinking plants in the water can be realized; the natural environments are simulated to the maximum degree. The water sinking plants and water emerging plants are combined; the water body ecological system recovery can be facilitated to the maximum degree.

The invention relates to a compound cigarette filter tip which comprises a filter tip section close to the lip end, a filter tip section close to the tobacco shred end and wrapping paper. The filter tip section close to the lip end is provided with a fiber filtration layer, the filter tip section close to the tobacco shred end is provided with a metal sintered porous filtration layer, the metal sintered porous filtration layer is a micro-filtration element made from a metal powder sintered porous filtration material, the metal powder sintered porous filtration material is prepared by using metal particles as a raw material, one-time formation is achieved through a formation technology after pretreatment, and the metal powder sintered porous filtration material is formed after sintering. The filtration material is high in filtration precision, good in filtration effect, uniform in structure and good in reproducibility, so that the compound cigarette filter tip does not deform, has the very good filtration effect on nicotine, tar, nitrosamine and other non-gaseous-phase toxic and harmful substances, does not absorb beneficial aroma components in cigarettes, is high in melting point, does not cause overburning producing cancerogens, prevents scorch and toxic smoke (produced due to scorch of the filter tip), has a good cooling effect and makes cigarettes having a cool and refreshing taste.

The invention discloses a submerging bed-floating bed coupled water purifying device. The submerging bed-floating bed coupled water purifying device comprises a submerging bed and a floating bed which are made of UPVC (hard polyvinyl chloride) tubes, wherein the submerging bed comprises upper and lower rectangular frames which are the same in shape; a plurality of perpendicular connecting tubes are arranged between the two rectangular frames; a plurality of horizontal connecting tubes are arranged in the lower rectangular frame; the frames are internally communicated; a floating block capable of being spliced is embedded into the lower rectangular frame, and a planting pot in which submerged plants are planted is arranged on the floating block; a floating block capable of being spliced is also embedded into the floating bed, a planting pot in which emergent aquatic plants are plants is arranged on the floating block, and artificial seaweeds are suspended between adjacent floating blocks of the floating bed; the submerging bed is placed on the center of the inner outline of the floating bed; a connecting rope is arranged between the submerging bed and the floating bed. According to the submerging bed-floating bed coupled water purifying device disclosed by the invention, positions, in water, of submerged plants are regulated by internally watering and pumping the submerging bed, so that the positions of the submerged plants are changed along with ecological niches of water level, transparency and the like, and a natural water environment is simulated to a greatest extent. The water plant planting amount is large, the varieties are rich, the survival rate is high, and the restoration of water body ecological community is facilitated.

The invention provides a pump-driven two-phase circuit device for heat dissipation of a high heat flux electronic device. Heat is collected and transported by using an endothermic process in evaporation and an exothermic process in condensation during a circulation flow process of a working medium. An evaporator for the circuit device comprises micro-channels and fins. In an area of high heat flux, the micro-channels are used to dissipate heat and increase a heat transfer coefficient of a partial area, while in an area of low heat flux, the fins are used. Due to great area difference between the micro-channel area and the fin area in the evaporator, when the working medium in the micro-channels enters the fin area, volume quickly expands and temperature of the working medium reduces, so as to help heat dissipation of the device in the fin area. By using different structures and with little resources, heat dissipation problems of devices with different powers are solved. The pump-driven two-phase circuit device for heat dissipation of the high heat flux electronic device can adapt to heat dissipation of electronic devices with different heat flux densities and can satisfy working requirements of electronic devices with a heat flux density of 50 W/cm<2> or above.

The invention belongs to the field of submersible buoyancy force adjusting correlation techniques, and discloses a total-sea-depth buoyancy force adjusting integrated valve set. The total-sea-depth buoyancy force adjusting integrated valve set is of a plug-in mounting structure and comprises a first stop valve, a second stop valve, a third stop valve, a fourth stop valve, a speed adjusting valve and a valve body. The first stop valve, the second stop valve, the third stop valve and the fourth stop valve are mounted in the valve body in a plug-in mounting manner and are sequentially connected end to end to form a bridge type loop. Switching of water injection and drainage working conditions of water ballast space is achieved by controlling the start-stop combination among the first stop valve, the second stop valve, the third stop valve and the fourth stop valve. The speed adjusting valve is additionally mounted in the integrated valve set, and therefore the working conditions of the integrated valve set comprise the seawater pump water injection and drainage working condition and the dump injection working condition at the same time. According to the total-sea-depth buoyancy forceadjusting integrated valve set, interchangeability of the valves is good, the overall structure is compact, and mounting and maintaining are convenient.

The invention provides a low-noise electromagnetic valve comprising an electromagnetic driving mechanism, a traction mechanism and a valve body, wherein the valve body comprises a cylindrical shell, a valve core and an upper cover, both ends of the cylindrical shell are provided with connecting flanges, the valve core is in the structural shape of a cylindrical surface generated in such a way that a pipeline with the diameter equal to that of the cylindrical shell is beveled by the other pipeline at an angle of 45 degrees, the cylindrical shell is provided with a hole in the same structural shape with the valve core, one end of the valve core is articulated on the edge of the hole, and the upper cover is fixed on the hole of the cylindrical shell; the traction mechanism comprises a pull rod and a pulling plate, wherein the pulling plate is articulated with the pull rod and the middle of the valve core; and the pull rod of the traction mechanism is connected with the electromagnetic driving mechanism. The invention has the outstanding disadvantages of fast opening and closing, small size, little fluid resistance, no regenerative noise and wide application prospect in a pipeline control system with higher noise reduction requirements.

The invention relates to an ADCA (Azodicarbonamide) foaming agent waste liquor treatment process which comprises the following steps of: preheating waste liquor to 40-60 DEG C; treating the waste liquor in a vacuum crystallizer under the condition that the temperature is 45-130 DEG C and the vacuum degree is 0-0.1 MPa; separating out sodium sulfate; reducing the temperature of a mother solution obtained after the sodium sulfate is separated to 35-40 DEG C, and crystallizing under the condition that the vacuum degree is 0.080-0.085 MPa; and separating out ammonium chloride. The ADCA foaming agent waste liquor treatment process provided by the invention can recover the sodium sulfate and the ammonium chloride under the precondition of zero sewage discharge and can greatly reduce the treatment cost of waste water.

The invention discloses a stop valve of a pipeline, which comprises a valve clack, wherein the valve clack comprises a sealed valve plate and a lower cylindrical body which is vertical to the valve plate; the internal surface of the lower cylindrical body of the valve clack is a cylindrical ring surface, the cylindrical ring surface is vertical to the sealed surface of a valve seat at a fluid inlet, and an outlet is tangential to an inlet of a valve body, i.e. the tangential line of the center line of the cylindrical ring surface at the outlet is superposed with the tangential line of the center line of the section at the inlet of the valve body. The cylindrical ring surface can be a cylindrical ring with equal diameter and can be also a cylindrical ring with variable diameter. The valve clack of the stop valve structure can lower the local resistance of the valve obviously, lower the pressure of a medium on a valve rod because the structure of the valve clack enables the medium to smoothly flow from an inlet of a valve cavity to an outlet, reduce the energy loss of the pipeline valve greatly, save the running cost of the pipeline and play an indispensable positive role in the aspects of environmental protection and energy saving.

A filtering aid for filtering an aluminate solution and a using method of the filtering aid relate to a method of using pulverized coal ash and pulverized coal ash residue to serve as the filtering aid. The filtering aid is characterized in that the filtering aid is pulverized coal ash and pulverized coal ash residue of thermal power plants. According to the method, the source of raw materials for the filtering aid is stable and reliable, the preparation method is simple, convenient and practical, and the used raw materials are industrial waste and are low in price and convenient to use. The pulverized coal ash and pulverized coal ash residue have adsorption and entrapment effects on solid impurities and particles suspended in liquid due to different particle sizes and porous characteristics, thereby the purpose of liquid and solid seperation is achieved. The pulverized coal ash and pulverized coal ash residue are used as the filtering aid so that the filtering aid does not cause the loss of an aluminum element in the leaf filtration process, also does not introduce other impurity elements to the leaf filtration process, can keep chemical compositions of an original solution in stability and constant to the maximum limit and is easy to popularize and apply in industry.