56results about How to "Eliminate swirls" patented technology

A combustor system includes a pylon fuel injection system coupled to a combustion chamber and configured to inject fuel to the combustion chamber. The pylon fuel injection system includes a plurality of radial elements, each radial element having a plurality of first Coanda type fuel injection slots. A plurality of transverse elements are provided to each radial element. Each transverse element includes a plurality of second Coanda type fuel injection slots.

An improved pot and pan washing machine is provided including a low suction intake manifold and a partition for capturing a substantial portion of the wash action of the washing machine within a segregated area. The intake manifold of the instant invention includes a plurality of voids having a void concentration that increases as the distance from the source of suction (such as a pump or intake inlet) increases. The partition (or divider) of the instant invention can be removed and repositioned within the wash tank through the use of channels along the walls of the wash tank that receive the partition.

The invention relates to a spiral symmetrical flow anaerobic reactor, which comprises a water distribution region, a reaction region and a three-phase separation region, wherein the water distribution region, the reaction region and the three-phase separation region are respectively arranged on a reactor from bottom to top, the water distribution region comprises a bottom plate and a lower post body, the upper surface of the bottom plate is connected with the lower post body, the reaction region comprises a middle post body, the middle post body comprises a spiral flow reaction region and a free airspace region, a back flow pipe is arranged in the free airspace region, and a case of the three-phase separation region is respectively provided with a cone body, an upper post body and a coverplate from bottom to top. The spiral symmetrical flow anaerobic reactor has the advantages that the water distribution is uniform, the blockage is not easy to occur, the spiral symmetrical flow anaerobic reactor trends to the flat push flow state, the treatment efficiency is high, the liquid solid mass transfer effect is good, the organic load impact resistance capability is high, the intermediate product suppression is reduced, and the particle sludge and the recycled alkalinity can be effectively maintained.

An axial flow fan is provided that is arranged in a rotatable manner around an axis in a stationary shroud ring, with fan blades. The shroud ring has an essentially cylindrical annular surface with an axial extension from a leading edge to a trailing edge and the fan blades have an axial depth from an inflow edge to an outflow edge. The outflow edges of the fan blades in an axial direction project beyond the trailing edge of the annular surface and form a blade overhang and flow guidance elements are arranged radially outside the fan blades as well as in the axial region of the blade overhang.

The invention relates to a soybean milk machine, in particular to a dual-rotation direction blade hole-blade soybean milk machine, comprising a top cover, a motor, a sealing ring, a rotation shaft, a sleeve, a hole blade, a grinding hole, a material cylinder, a main blade, a cylinder bottom blade and a base. The top cover and the base are respectively arranged at the top part and the bottom part of the material cylinder; the sleeve is a cylinder with the upper end closed and the lower end opened; the lower end of the sleeve is provided with four cylinder bottom blades integrated with the sleeve and evenly distributed along the circumference of the sleeve; the top cover and the base are respectively provided with a motor; the rotation shaft of the motor of the base penetrates an axial hole at the bottom part of the material cylinder and the upper end thereof is connected with the main blade which is integrated with the rotation shaft. Compared with the traditional soybean milk machine, the dual-rotation direction blade hole-blade soybean milk machine of the invention greatly improves the speed of beating the slurry particles by the blades, and increases the rate that the blades collide with the slurry particles, thereby greatly enhancing the working efficiency of the soybean milk machine.

A polishing pad is adapted for use on a polishing tool. The polishing tool has a support surface for receiving the polishing pad. The polishing pad comprises a polishing layer comprising a fabric polishing surface and a backing layer, the backing layer having an inner and outer surface. The outer surface of the backing layer is adapted to mechanically or adhesively attach in removable fashion to the support surface of the polishing tool. The polishing pad includes a middle layer made from a non-foam, solid thermoplastic polymer in the form of a flexible sheet. The middle layer self-bonds bonded to the polishing layer and the inner surface of the backing layer to form a three-layer polishing pad.

A combustor system includes a pylon fuel injection system coupled to a combustion chamber and configured to inject fuel to the combustion chamber. The pylon fuel injection system includes a plurality of radial elements, each radial element having a plurality of first Coanda type fuel injection slots. A plurality of transverse elements are provided to each radial element. Each transverse element includes a plurality of second Coanda type fuel injection slots.

The invention provides a low-noise regulating valve which comprises a valve body, a sleeving valve element, a valve element and a valve rod, wherein the valve element is arranged in the valve body, and the valve element is connected with the valve rod. The low-noise regulating valve is characterized in that a valve seat in the valve body is provided with a multi-taper-hole sleeve, and the inner wall of the multi-taper-hole sleeve is matched with the valve element; the upper end of the multi-taper-hole sleeve is fixed through the sleeving valve element, and the side wall of the multi-taper-hole sleeve is provided with a plurality of taper holes; the diameters of the taper holes are gradually increased from the inner wall to the outer wall to form a taper of (1:10)-(1:1); the annular wall of the sleeving valve element is provided with a groove which can be used for injecting rubber; and the lower bottom surface of the valve seat in the valve body is transited by adopting a parabolic quadratic surface. According to the low-noise regulating valve, through the secondary noise reduction of the multi-taper-hole sleeve, the sound path noise reduction of the valve element with an elastic damping sleeve and the optimized sound source noise reduction of the valve seat, the noise treatment of multiple parts of the regulating valve is realized, and the regulating valve has the advantages of simple structure, easiness of replacement and convenience in use.

An axial flow fan is provided that is arranged in a rotatable manner around an axis in a stationary shroud ring, with fan blades. The shroud ring has an essentially cylindrical annular surface with an axial extension from a leading edge to a trailing edge and the fan blades have an axial depth from an inflow edge to an outflow edge. The outflow edges of the fan blades in an axial direction project beyond the trailing edge of the annular surface and form a blade overhang and flow guidance elements are arranged radially outside the fan blades as well as in the axial region of the blade overhang.

The invention discloses a one-station type cement production system which comprises a grinding aid metering proportioning device, a grinding aid stirring device, an automatic grinding agent and cementraw material proportioning device, a grinding dust collection device, a sealed tube type conveyer belt, cement tank discharge equipment, cement lifting conveying equipment and packaging filling equipment, wherein a discharge hole of the grinding aid metering proportioning device is connected with the grinding aid stirring device through a conveyer belt; the discharge hole of the grinding aid stirring device is connected with the automatic grinding agent and cement raw material proportioning device through the conveyer belt; and the discharge hole of the automatic grinding agent and cement rawmaterial proportioning device is connected with the grinding dust collection device through the conveyer belt. The one-station type cement production system has the beneficial effects that grinding aids are automatically proportioned, accurate proportions are ensured, raw material waste is avoided, meanwhile the proportioning efficiency is improved, high stirring and mixing efficiency is achieved, and the labor is saved.

The invention discloses a preparation method of isopentenyl alcohol. The preparation method includes: in a hydrogen atmosphere, taking 5% Pd / C as the main catalyst, and in the presence of a cocatalyst, conducting isomeric transformation of the raw material 3-methyl-3-butene-1-ol into isopentenyl alcohol; specifically, mixing the main catalyst and the cocatalyst that are evenly mixed in a weight ratio with the reaction raw material uniformly, carrying out constant temperature heating reaction at 50DEG C-110DEG C for 60-100min, and then ending the reaction. The preparation method of isopentenyl alcohol provided by the invention can well inhibit the generation of the hydrogen reaction product isoamyl alcohol, the yield of the hydrogen reaction product can be inhibited below 7%, and a good effect can be achieved at high temperature, the rise of temperature also changes the balance, so that the content of the target product is increased, and the one-time conversion rate of the raw material is effectively improved.

The invention discloses a structure and method for regulating diffusion flowing of a pump station forebay, and belongs to the technical field of water conservancy projects. The structure comprises anapproach channel, the forebay, water inlet ponds, separating piers between the water inlet ponds and water pump water sucking pipes in the water inlet ponds and is characterized in that the forebay isprovided with a plurality of flow separating plates and an arc strip plate, the flow separating plates are fixed to the forebay, and are in one-to-one corresponding to the separating piers, the arc strip plate is fixed to the rear ends of the flow separating plates, and the flow separating plates are connected into a comb-shaped combination plate. The structure is suitable for forward water inletforebays of various pump stations. The forebay flowing state can be effectively improved, the vortex and the backflow of the forebay can be removed, the water flow in the forebay and the water inletpond can be more smooth, the good water inlet condition is provided for water inlet of a water pump, the safe and economic operation of a pump station is facilitated, and the structure is simple, technically reliable, easy to implement, small in engineering amount, and large in economic benefit. The structure is technically reliable, easy to implement, obvious in benefit and wide in application prospect.

The invention discloses a boundary layer suction type propeller adopting large and small two-stage blades. The boundary layer suction type propeller is mounted at the tail part of the aircraft; a large rotor and a small rotor are arranged on the thruster, blades of the large rotor adopt low rotating speed, thrust of a main part is generated, and the requirement for the climbing performance of the aircraft is met. the blades of the small rotor rotate at a higher speed, so that the load of the root can be increased, the load of the blades of the propeller is close to an ideal load, and energy contained in downstream airflow of the propeller is weakened to the maximum extent.

The invention discloses an efficient refrigerating beating machine which comprises a front frame and a rear frame. A tank is arranged at the upper end of the front frame, a sealing end cover and a feeding port are formed in the top of the tank, a mixing shaft is arranged in the tank, the lower end of the mixing shaft is connected with a frequency conversion motor, an open turbine paddle is mounted on the upper portion of the mixing shaft, an axial-flow paddle is mounted on the lower portion of the mixing shaft, the axial-flow paddle is a CBY paddle, namely a variable cross-section spiral arc paddle, the open turbine paddle comprises at least three blades, the axial-flow paddle comprises at least three blades, a baffle is welded on the inner wall of the tank and connected with crushing cutters in a threaded manner, the right side of the front frame is connected with the rear frame, and the rear frame is provided with a refrigeration device and a cooling device. According to the beating machine, mixing time is shortened, mixing efficiency is improved, energy is saved, materials are prevented from going bad, and the beating machine is environmentally friendly, low in production cost and easy to maintain.

The invention discloses a cable-stayed bridge steel plate composite beam capable of resisting vortex-induced vibration, which comprises a bridge deck slab, steel main beams are fixedly arranged at two ends of the bottom of the bridge deck slab, steel cross beams are fixedly arranged between the steel main beams, steel cantilevers are fixedly arranged at the side ends of the steel main beams, and maintenance rails are arranged at the bottom ends of the steel main beams. A stabilizing plate perpendicular to the steel cross beams is fixedly arranged between the middles of the steel cross beams, and flow guiding devices located on the inner sides of the overhauling rails are symmetrically arranged at the bottom ends of the steel cross beams. The flow guiding device is a right-angle triangular prism, the long right-angle side of the section of the flow guiding device is attached to the steel cross beam, the short right-angle side is perpendicular to the steel cross beam, and the bevel edge inclines downwards from the inner end of the flow guiding device. The invention aims to provide the cable-stayed bridge steel plate composite beam, which can solve the wind vibration problem of the cable-stayed bridge, change the air flowing state and improve the wind-resistant stability.

The invention belongs to the field of water conservancy and hydropower and relates to a novel bulkhead gate device capable of eliminating a gate front vortex. Two curved barriers which are as high asa gate and are tightly attached to the surface of the gate are vertically arranged on the upstream face of the gate, and the curve request of the curved barriers is made. In the arrangement mode, thedouble-curve vortex eliminating barriers can achieve the vortex eliminating effect under the conditions of different immersing water depths and different gate opening degrees, the structure is simple,arrangement is convenient, overhauling and maintenance are easy, the flow regime of the water flow in front of the gate and the gate flow passing capacity cannot be affected, no new harmful vortex isintroduced, and no extra surface swirl nor surface indentation vortex is generated. Therefore, the phenomena that due to the existence of the gate front vortex, the flow passing capacity is reduced,water flow turbulent fluctuation is intensified, water building vibration is caused, the flow regime of the water flow is deteriorated, and cavitation and cavitation erosion are caused are reduced, and engineering safe operation is guaranteed.

The invention provides an oxidizing solution separator provided with a gas-liquid separating spray nozzle, which has the structure of consisting of a shell, a material inlet and a material outlet; wherein the end of the material inlet positioned inside the shell is connected with a rotary spray nozzle by an elbow pipe bending upwards; an anti-rotation flow stabilizer is arranged above the material outlet positioned at the bottom of the shell; wherein the rotary spray nozzle consists of a cap cover, a guide vane and a ring-shaped base, the guide vane is vertically welded between the cap cover and the ring-shaped base, a rib plate is arranged at the bottom of the ring-shaped base, the ring-shaped base is connected with the upper end of the elbow pipe by the rib plate, and the anti-rotation flow stabilizer is formed by vertically welding a stainless steel plate at the bottom of the shell. The oxidizing solution separator has the advantages of improving the effect of gas-liquid separation, ensuring the safety of production and preventing production accidents.

The invention discloses a smoke exhaust ventilator. The smoke exhaust ventilator comprises a tank body internally provided with a draught fan. The smoke exhaust ventilator is characterized in that a rectifying net is horizontally installed in the tank body, the rectifying net is provided with net holes, and the rectifying net is of a concave-convex structure. The stereo rectifying net is installed in an airflow passage, so that airflow entering into the draught fan can be divided, large eddies among smoke flow are removed, and thus the purpose of reducing noises is achieved; and in addition, the flow field of the smoke flow can be better adapted, the contacted area is larger when the smoke flow passes, and when the airflow and sound waves pass through, energy can be consumed through friction, so that a better rectifying effect is achieved.

The invention discloses a step-type self-sealing waste heat recovery system which comprises a hot air hood and a hot air pipeline system, wherein the hot air hood is internally provided with a built-in flue; the hot air hood is provided with a fume sucking port; the built-in flue, the fume sucking port and the hot air pipeline system are sequentially connected; the lower part of the built-in flue is provided with a strip-shaped air sucking port for sucking hot air; the built-in flue is divided into a plurality of built-in sub-flues by a plurality of flue partitions along the length direction of the air sucking port; each built-in sub-flue is provided with an independent air sucking sub-port; the fume sucking port is internally divided into fume sucking sub-ports corresponding to the built-in sub-flues by a plurality of fume sucking port partitions; the built-in sub-flues are communicated with the corresponding fume sucking sub-ports. The step-type self-sealing waste heat recovery system is capable of effectively preventing external environments from influencing the waste heat recovery system, preventing external cold air from being sucked, eliminating a fume turbulent condition in the hot air hood, greatly improving the fume waste heat recovery rate of a sintering cooling machine and achieving the purpose of fully utilizing waste heat resources.

The invention discloses a stirring device for sewage treatment which comprises a driving part, a stirring shaft and an impeller, the impeller is concentrically and fixedly arranged on the stirring shaft, and the driving part is suitable for driving the stirring shaft to rotate in a reciprocating mode; the driving component comprises a rotary power source, a driving mechanism, a driving shaft, a shell and an energy storage mechanism, the one-way rotation of the rotary power source is suitable for driving the driving shaft to rotate forwards or backwards through the driving mechanism, and the driving shaft is concentrically and fixedly connected with the stirring shaft; the shell is fixedly arranged, energy storage mechanisms are arranged between the shell and the driving shaft, the number of the energy storage mechanisms is two, the energy storage mechanisms are suitable for storing energy through forward rotation and reverse rotation of the driving shaft respectively, and the energy storage mechanisms are suitable for releasing energy during forward rotation and reverse rotation conversion or reverse rotation and forward rotation conversion of the driving shaft. The stirring device has the advantages of full stirring, good mixing effect, good flocculation effect, reliable structure, stable operation and low cost.

The invention discloses an efficient and rotational-flow-free funnel. The efficient and rotational-flow-free funnel comprises a funnel body. A baffle assembly is arranged in the funnel body and divides the inner portion of the funnel body into a plurality of fluid channels. The baffle assembly comprises a plurality of baffles which are perpendicularly connected with the inner wall of the funnel body. By means of the efficient and rotational-flow-free funnel, rotational flow can be eliminated, air is prevented from being bringing in, the fluid channels are prevented from being blocked, large liquid flow can be ensured, fluid overflow can be avoided, and cost is low.

The invention relates to a volute tongue structure of a fan for a range hood. An inner concave surface is formed on one side, facing an air outlet of the fan, of a volute tongue. The volute tongue structure is characterized in that the volute tongue comprises a front disk, a central disk and a rear disk, wherein the side parts, facing to the air outlet of the fan, of the front disk, the central disk and the rear disk wholly form the inner concave surface, the front disk further extends to the bottom left to form a front side deep tongue on the basis of the inner concave surface, the rear disk further extends to the bottom left to form a rear side deep tongue on the basis of the inner concave surface, and the central disk is continuously and inwards concave to form a central short tongue on the basis of the inner concave surface. Compared with the prior art, the volute tongue structure disclosed by the invention has the advantages that the volute tongue forms the front side deep tongue, the rear side deep tongue and the central short tongue, the gap between the front disk, the rear disk and a vane wheel is smaller, and the gap between the central disk and the vane wheel is larger, so that the speed at which front and back air currents flow out cannot be much lower than the speed at which the central air current flows out, the whirlpool caused by a low speed of two sides and high speed of the center is eliminated, and further the whole efficiency of the fan is improved.

The invention discloses a polyurethane foaming machine, which comprises a casing, a silo and a driving shaft. A silo is arranged above the casing, and the number of silos is multiple groups. The bottom of the silo is connected with a feed pipe. , the bottom of the feed pipe is communicated with a first pressure pump. According to the density of different raw materials, the present invention can place high-density raw materials in high-position bins through the connection of multiple sets of silos and shells. When raw materials are mixed in an inclined shell, gravity factors can be avoided to cause higher densities. Large raw materials are concentrated under the inner cavity of the shell to prevent uneven mixing of raw materials. At the same time, the inclined shell makes it neither the same nor tangent to the incoming direction of raw materials, which increases the degree of confusion when raw materials enter the shell. The gap between the driving shaft and the driven shaft is large, and the blades have grooves, which increases the throughput of raw materials, improves the distribution and mixing effect of raw materials in the shell, and is beneficial to the mixing of raw materials in the foaming machine. It is suitable for a wide range of promotion and use.

The invention discloses a saccharifying tank for preparing a cell culture medium. The saccharifying tank comprises a tank body, wherein a first motor and a second motor are arranged above the tank body; the first motor is connected to a first stirring shaft and the second motor is connected to a second stirring shaft; a first stirrer mounting hole and a second stirrer mounting hole are symmetrically formed in two sides of the axis of the tank body; the first stirring shaft penetrates through the first stirrer mounting hole and extends into the tank body; the second stirring shaft penetrates through the second stirrer mounting hole and extends into the tank body; a first stirring blade is arranged on the first stirring shaft; a second stirring blade is arranged on the second stirring shaft; and the first stirring blade is located on the inclined upper part of the second stirring blade. By virtue of the two stirring shafts, a torque difference is caused between the upper and lower parts of the interior of the tank body to eliminate vortex, so that cooked mash is uniformly stirred.

The invention provides a bridging type noise elimination and air guide passage for a vehicle air conditioner compressor. The bridging type noise elimination and air guide passage is arranged in the air conditioner compressor. The air conditioner compressor comprises a shell, a rear end plate, a cylinder body and a front end plate, wherein the rear end plate, the cylinder body and the front end plate are arranged in the shell. A first-stage noise elimination cavity is formed by the shell, the front end plate, the rear end plate and the cylinder body in an enclosed manner. A valve assembly is arranged on the cylinder body. The bridging type noise elimination and air guide passage further comprises a noise elimination and air guide pipe. The noise elimination and air guide pipe is arranged at the position of the first-stage noise elimination cavity and fixedly connected with the cylinder body. A cavity is formed in the noise elimination and air guide pipe and communicates with a cylinder body exhaust hole and a rear end plate air inlet hole. High-pressure air in the compressor is exhausted from the cylinder body exhaust hole and then directly enters the built-in noise elimination and air guide pipe, the high-pressure air directly enters the air inlet hole of the rear end plate after passing through the cavity of the noise elimination and air guide pipe, and the bridging type noise elimination and air guide passage is formed. According to the bridging type noise elimination and air guide passage, the bridging type noise elimination and air guide passage arranged in the first-stage noise elimination cavity is designed, the whole high-pressure cavity is simplified into a pipeline connection type passage, a new air flowing path is formed, it is guaranteed that the pressure gradients of the high-pressure cavity are similar, and pressure losses are reduced.

The invention discloses a dishwasher washing pump and a dishwasher. The dishwasher includes a spray arm. The washing pump includes a pump housing with an inner cavity. In communication, a guide part is provided in the inner cavity of the pump casing, and part of the structure of the guide part is located in the projection of the opening on the inner cavity, and the guide part is used to guide the water flow in the pump casing to change. The direction of movement breaks up the vortex and reduces the local pressure loss of the water flow. The present invention eliminates the energy loss caused by "dead water area" or "vortex area" in the washing pump, thus improving the working efficiency of the washing pump.

The invention provides a vibration suppression structure for a vaned diffuser of a turbocharger. The vibration suppression structure for the vaned diffuser of the turbocharger comprises an air compressor volute, an air compressor impeller, a diffuser blade, a bearing body, a controller, a vibration sensor and an electromagnetic valve. According to the vibration suppression structure for the vaneddiffuser of the turbocharger, a plurality of gas taking holes are formed in the bearing body of the turbocharger; the vibration sensor and the electromagnetic valve are arranged, in the case of largevibration of a turbocharger body, the electromagnetic valve is controlled through the controller to lead air of the air compressor into the space between the outlet of the air compressor impeller andthe inlet of the diffuser blade, the local airflow vortex is eliminated, and the abrupt change state of a pressure in a local space is reduced, so that the vibration suppression effect on the vaned diffuser of the turbocharger is acted.