93 results about "Root type" patented technology

A Roots-type blower comprises a housing defining a rotor chamber and an inlet and outlet to the rotor chamber. First and second rotors are mounted in the rotor chamber, each rotor defining a plurality of lobes, adjacent lobes and the housing cooperating to define gas transport chambers. The blower is configured so that a net flow rate of gas into a gas transport chamber is generally or approximately constant, whereby a change in gas pressure in the gas transport chamber is generally or approximately linear, as the gas transport chamber approaches the outlet. In one embodiment, this is accomplished by providing flow channels extending from the outlet towards the inlet, and from the inlet towards the outlet, corresponding to each rotor. The flow channels permit gas to flow from the high pressure outlet to a gas transport chamber and from the gas transport chamber to the low pressure inlet. The resulting amelioration of pressure spikes associated with flow back substantially reduces the operational noise level of the blower.

The invention discloses a manufacturing process of a fir blade root type steam turbine blade. The manufacturing process comprises the steps that A, a process head of a blank of the blade is machined; B, the process head is located through three center holes of the blank of the blade, the process head is clamped through a fixture during machining, rough machining and finish machining are conducted on all parts, except the blade root, of the blade, a blade crown is machined at the blade crown end during finish machining according to the process datum, and the blade crown and a blade root middle body form a large spatial locating surface; C, a fixture for blade root milling is adopted, the machined spatial locating surface is used for locating, and rough machining and finish machining are conducted on the blade root of the blade; D, a blade steam passage is polished. By the adoption of the machining method, the traditional square box pouring technique is eliminated, the machining risk is lowered, and cost is reduced. Meanwhile, a large surface is no longer machined through locating of a small surface, and the small surface is machined through locating of the large surface instead; as a result, the manufacturing accuracy of the large steam turbine blade is greatly improved, and the positional accuracy between the large surface and the small surface is ensured.

The invention reduces power consumption and makes rotor with ease. As illustrated in FIG. 2, a multistage roots pump (1) in the invention including upstream rotors (R1a, R1b, R2a, R2b) having multiple teeth, supported by a pair of revolving shafts (A1, A2); and downstream rotors (R3a, R3b˜R5a, R5b) having identical number of teeth (31) with the upstream rotors, supported by revolving shafts (A1, A2). The discharge area formed by the outer periphery of the downstream rotors (R3a, R3b˜R5a, R5b) and the inner periphery of the pump chambers (P1˜P5) is smaller than that of the upstream rotors (R1a, R1b, R2a, R2b).

The invention discloses a construction method for rooted foundation anchorage, comprising the following steps:

• • precasting a concrete caisson in sections, excavate or bore hole for the caisson sinking, reserving holes for projection of anchor roots in the wall of caisson;
  • cleaning the bottom of the bore hole, and sealing the bottom with concrete; precasting the beam type concrete roots and, within the bore hole, projecting the roots into the earth around the caisson;
  • sealing a concrete cover over the bore hole to form a flat cap, which can be used as the cap of a bridge foundation.

The invention also discloses a construction method for a root-type cast in-situ bored pile with anchor roots, comprising the following steps:

• • placing a reinforcement cage in a bored hole; each guide framework is internally provided with anchor roots;
  • using a vibration extruder to squeeze the roots in the reinforcement cage;
  • using the squeezing head of the vibration extruder to squeeze the anchor roots from top to bottom gradually. The invention greatly improves the traditional foundation structure. The anchor roots increases friction and structural stability greatly, thus making it possible to reduce gravity of the structure.

An embodiment of the invention provides a root key pushing device suitable for root type tubular pile foundation, which can be adjusted through rotation and can achieve flexible centering simultaneously. The root key pushing device comprises a lifting platform, a rotating platform and an adjusting platform from the bottom up, wherein the lifting platform is a bearing structure of the whole pushing device, bears gravity and impact force brought by the rotation operation of an upper-part member after supported and stabilized with the inner wall of the tubular pile, and is connected with external force simultaneously to perform integral lifting of the whole root key pushing device; a rotating shaft is arranged in the center of the lifting platform and is connected with the rotating platform; the rotating platform is provided with a rotary drum matched with the rotating shaft of the lifting platform, and the rotary drum is arranged on the rotating shaft of the lifting platform in a sleeving manner; and lateral spacing baffles are arranged on the adjusting platform and used for vertical and horizontal position adjustment during centering of the root key.

A gear compressor or supercharger for compressing compressible fluids such as air, having a pair of intermeshing helical lobed rotors. A plenum or cavity is provided at a rear end of the gear compressor, situated rearwardly of said rotors and below an respective axis of rotation of each of said rotors, which spans at least a distance between said respective longitudinal axis of rotation of each of said rotors. In a preferred embodiment the plenum is in direct fluid communication with high pressure fluid which is discharged from said high pressure discharge port. The above modification improves the efficiency of the compressor, particularly at high revolutions.

The invention discloses a two-wall hollow fabricated root-type open caisson foundation. The two-wall hollow fabricated root-type open caisson foundation is composed of a shaft, root keys and a back cover, the shaft is of an annular tubular structure with two hollow walls, and is composed of a shaft inner wall, a rib wall and an outer wall in the radial direction, and a formed cavity between the well walls communicates vertically so that mud sucking equipment can be lowered and moved in the cavity between the well walls; bottom feet of the shaft are blade feet, and root keys are arranged on thepositions, penetrating through the shaft inner wall, the rib wall and the outer wall and protruding and extending from the outer wall, of the shaft; the shaft is formed by connection of a bottom segment and a plurality of standard segments in the vertical direction, the bottom segment is in a blade shape, and the blade feet are formed; and for the shaft which is completely jointed and sunk in place, the root keys are arranged in the shaft, and then the bottom of the shaft is poured to form the back cover. According to the two-wall hollow fabricated root-type open caisson foundation, main components are connected by prefabricated components correspondingly, the structure is simple, fast and accurate sinking of an open caisson can be realized, the construction difficulty is effectively lowered, the operational safety factor is improved, industrial mass production is facilitated, and economic benefits are obvious.

The invention provides a method for inducing aquatic root of fleshy-root-type flowers. The method comprises the following steps: step 1, selecting a potted plant; step 2, cleaning roots; step 3, selecting a specific bactericide to treat the root; step 4, selecting a specific plant growth regulator to treat the root; step 5, placing the root into a water culture tank to induce aquatic root; and step 6, transplanting the plant into a container and adding a nutrient solution for maintaining. In the method provided by the invention, a specific bactericide is selected to treat the root, not only can kill common diseases of the fleshy-root-type flower, but also can stimulate the growth of the aquatic root of the-fleshy root-type-flower on a certain degree; and a specific plant growth regulator is selected to treat the root, and can greatly promote the growth of the aquatic root system of the fleshy-root-type flower. The method provided by the invention is adopted to treat the fleshy-root-type flowers such as northeast kaffir lily and the like, so that the phenomenon of death caused by watering problem during the maintaining process of the fleshy-root-type flowers can be reduced, and meanwhile the damage of soil diseases and pests to the plants can be reduced.

The invention provides an integrated design technology for sowing, culturing and transplanting rice, belonging to the technical technology of agriculture. The technology consists of a sower, a seedling root type seedling cultivation box, a planting device, five-element rich soil and a vertical type seedling putting bracket. Therefore, the rice sowing, the rice culturing and the rice transplanting form an integrated scientific production service mode. The technology adopts the sower to sow in a branching way to reach even sowing and solve the difficulty of uneven sowing in the prior art; the method for culturing the seedlings by means of branching the seedling root leads the sower to have no seedlings division function, better transplant the seedlings, and solve the difficult of too muck idle roots when grafting the seedlings by a grafting device; culturing the seedling roots with the five-element rich soil, so as to lead roots of the seedlings to be heavy and the grafted seedlings not to be easily float, and solve the difficulty of too much float roots when grafting by the grafting device; and culturing the seedlings by filling seedling roots with the five-element rich soil, and when grafting the seedlings, grafting the five-element rich soil into farmlands, so as to realize transplant with soil, recycle organic fertilizer, improve soil and increase grain yield. The technology can improve productivity effect, reduce production coast, and mechanize rice owing, culturing and grafting.

The invention relates to the technical field of solar machinery, in particular to a rooting type photovoltaic panel solar power generating device for desert regions. The device comprises supporting columns in longitudinal symmetrical arrangement, fixing plates are connected to lower outer walls of the supporting columns, rooting devices are arranged at bottoms of the supporting columns, and electric telescopic rods are arranged at top centers of drivers which are connected to tops of the supporting columns respectively. Arc windproof covers are connected to tops of the electric telescopic rods, a supporting seat is arranged at the top center of each arc windproof cover, a photovoltaic support is arranged at the top of each supporting seat through auxiliary rods in bilateral symmetrical arrangement, a solar power generating device body is arranged above the photovoltaic supports, and bottom front and rear sides of the a solar power generating device body are fixedly connected with topsof the photovoltaic supports through connectors in bilateral symmetrical arrangement. By the rooting type photovoltaic panel solar power generating device, defects of high time and labor consumption and high mounting cost of a traditional rooting type photovoltaic panel solar power generating device for the desert regions in the prior art can be effectively overcome.

The invention discloses a construction platform for facilitating root key construction of a root type cast-in-place pile. The construction platform for facilitating the root key construction of the root type cast-in-place pile comprises a base plate; the positions, corresponding to root key limiting devices, of the bottom of the base plate are respectively and rotatably connected with transmission gears; the transmission gears are respectively in transmission connection with respective driving motor; the transmission gears are in engaged transmission with vertical gear racks at the tail ends of the root keys which are inserted into the side wall of a pile pit. From the above structure, the construction platform for facilitating the root key construction of the root type cast-in-place pile disclosed by the invention can climb in the pile pit automatically so as to complete the construction of all root keys in the pile pit without external force, so that the construction efficiency of the root keys is improved.

The invention discloses an object root type design method and system based on a domain knowledge graph ontology, and the method comprises the steps: carrying out the type classification of obtained data, and obtaining structured data, semi-structured data and unstructured data; performing object construction on the structured data, the semi-structured data and the non-structured data in sequence based on the domain knowledge graph to obtain an entity object, an event object, a text object and a multimedia object; converting the entity object, the event object, the text object and the multimedia object into an entity type, an event type, a text type and a multimedia type according to the object root type; and sequentially performing knowledge processing on the text type and the multimedia type to convert into an entity type and an event type, and obtaining a conversion processing result. In the embodiment of the invention, the event type, the text type and the multimedia type are addedand extended to knowledge of the classification expression field, so that various typical field scenes can be better described.

The invention discloses a planting method of perennial root type aquatic plants in an artificial water body. The planting of the perennial root type aquatic plants in the artificial water body is finished through the following seven steps of: preparing planting soil; disinfecting the planting soil; preparing soft packs; filling the planting soil in the soft packs; planting the perennial root type aquatic plants in the planting soil of the soft packs; sealing the soft packs; and sinking the sealed soft packs in water body. According to the planting method of the perennial root type aquatic plants in the artificial water body, since soft containers have high water permeability and air permeability, the roots of the plants are not suppressed, the survival and the growth of the plants are facilitated, finally the survival rate of the perennial root type aquatic plants planted in the artificial water body is higher and can reach 95-100%, and the water body can be purified and the landscape can be beautified by using the method.

The invention belongs to the technical field of flow measurement, and particularly relates to an integrated Roots type flowmeter with a gas leakage detection function. The Roots type flowmeter comprises a microprocessor, a signal output part, a display part, a storage part, a power source part, a keyboard and remote control part, a gas leakage detection part and a temperature, pressure and flow detection part. The signal output part, the display part, the keyboard and remote control part and the storage part are connected with the microprocessor. The temperature, pressure and flow detection part and the gas leakage detection part are connected with the microprocessor through A/D converters respectively. The keyboard and remote control part and the microprocessor are connected with the power source part. The integrated Roots type flowmeter has the advantages that a pipe body of the Roots type flowmeter is provided with a gas leakage detection sensor, the on-site gas leakage amount can be detected in real time, an alarm is given in time when leakage occurs, and a signal is output to turn on an exhaust fan or turn off a gas inlet valve to cut off a dangerous source when the flowmeter exceeds safety limit requirements.

A roots-type fluid machine including a set of rotors and a rotor housing is disclosed. The rotor housing accommodates the rotors and has a suction space. The set of rotors mesh with each other and rotate in the rotor housing so that fluid is drawn into the suction space and discharged from the rotor housing. Each of the set of rotors includes a tooth having a twisted portion and a different shape variation portion. The twisted portion has a twist angle that changes linearly or non-linearly about a rotation axis of the corresponding rotor with respect to the variation of the position in the direction of the axis. The different shape variation portion has a twisted angle that changes by a smaller degree than the variation of the twist angle of the twisted portion.

The invention relates to a double-effect Roots-type MVR falling-film evaporation system. The system comprises a double-effect falling-film evaporator and a water vapor recompression system, and the evaporator comprises a first-effect evaporator body and a second-effect evaporator body which each comprises a heating chamber and a separation chamber; the water vapor recompression system mainly comprises a Roots-type MVR compressor. A vapor outlet of the second-effect separation chamber of the evaporator is connected with a vapor inlet of the water vapor compressor, and a vapor outlet of the water vapor compressor is connected with a vapor inlet of the first-effect evaporator body. According to the double-effect Roots-type MVR falling-film evaporation system, by means of recycling of second-effect low-grade waste heat, total latent heat of secondary vapor produced in the solution evaporation process is reused, primary energy source is saved, the energy consumption during solution evaporation is greatly reduced, and pollution to the environment is reduced. The double-effect Roots-type MVR falling-film evaporation system is simple in structure and small in occupied space, only a small amount of vapor is needed during starting, fresh vapor is not needed after the system is started, the automation degree is high, and the double-effect Roots-type MVR falling-film evaporation system is particularly suitable for heat sensitive materials, wide in application range and capable of being used in occasions of evaporation concentration, evaporation crystallization and low-temperature evaporation.

The invention belongs to the fields of forestry biotechnological seed breeding or plant cell engineering and discloses an E.urophylla*E.saligna rooting culture medium and an application thereof. On the basis of an improved MS culture medium, IBA and 3-AB are supplied to the rooting culture medium. By means of addition of the novel rooting inductive substance 3-AB and the synergistic effect of the rooting-type growth regulator IBA, rooting ratio of the E.urophylla*E.saligna is more than 87% and transplanting survival rate is more than 91%. When rooted seedlings are transplanted on bags, the seedlings grow tidily and robustly, have strong resistance, and completely reach demands of large-scale and commercial seedling production. The rooting culture medium has good repeatability and stable effects, and has no intensive fluctuation on the rooting ratio and transplanting survival rate even after multiple times of usage, thereby completely solving a problem that the E.urophylla*E.saligna is difficult to root during tissue culture induction.

The invention discloses a water drainage system for a water-enriched edge slope. The water drainage system consists of a water collection system and a water drainage system, wherein the water collection system consists of hollow anchor rods, porous concrete and grout pipes; the water drainage system consists of a gravel reversed filter layer, a water isolation layer and a control valve; directed pipe heads are arranged at the front ends of the hollow anchor rods; grout plugs and the grout pipes are arranged in the hollow anchor rods; outer sleeve heads are arranged at the rear ends of the hollow anchor rods; and the porous concrete is pressed into the soil edge slope and is dispersed along a thin area of the soil to form a root-type network. By simulation of the ecological slope protection principle, the water drainage system has anchoring and reinforcing effects and facilitates stabilization of the edge slope; the control valve is arranged between the gravel reversed filter layer and a soil retaining wall, so that water loss and a threat to the stability of the edge slope due to reverse osmosis of water into the edge slope caused by changes of the water level in front of the wall are effectively avoided, and the problem that seawater with high salinity affects the water quality of underground water of the edge slope is solved; and furthermore, under a condition that the underground water level of the edge slope is relatively high, upper and lower water discharging holes simultaneously work to improve the water drainage efficiency.

The invention provides a three-twisted-blade Roots type power machine power generation device. The three-twisted-blade Roots type power machine power generation device is a volumetric rotary machine,the three-twisted-blade Roots type power machine power generation device comprises rotors and a machine shell, the pair of meshed three-twisted-blade rotors are adopted by the rotor, the three-twisted-blade rotors adopts novel wires, the half of a molded line on the single tooth of each rotor is an arc-shaped AB-straight line BC-involute CD-straight line DE-arc-shaped EF-opposite rolling FG shapedline. The power generation device uses low-quality waste heat to act to push the meshing rotors to expand and act, steam heat energy is converted into mechanical energy, the rotors drive output shafts to rotate to do work, the mechanical energy is further converted into electric energy, machining is easy, the area utilization coefficient is high, the meshing superposition degree is higher, and the operation is more stable.

The invention relates to a rotor of a Roots type vapor compressor, and belongs to the field of vapor compression. The rotor comprises a rotor body the cross section of which is 8-shaped, wherein the sealing surface of the rotor body is parallelly provided with grooves at a certain interval; the grooves are internally provided with sealed strips matched with the grooves, the bottom surfaces of the sealed strips are provided with small holes, one ends of filament winding springs are arranged in the small holes, and the other ends of the filament winding springs prop against the bottom surfaces of the grooves; and the sealed strips are protruded out of the surface of the rotor body, and an expansion clearance is preset between the rotor body and a shell. The Roots type vapor compressor provided by the invention has the advantages that a clamping phenomenon of the rotor and the shell is greatly reduced, a sealing effect is good, and an energy-saving effect is notable.

A Roots-type supercharger includes a housing, a first rotor, a second rotor, an outlet volume, a transfer volume, and a bleed port. The housing includes an interior chamber, an inlet port, and an outlet port. The first rotor and the second rotor have a plurality of lobes respectively. The outlet volume is substantially bounded between the outlet port, the first rotor, the second rotor, and the interior chamber of the housing. The transfer volume is substantially bounded between the first rotor, the second rotor, and the interior chamber of the housing. The bleed port is adapted to fluidly connect the outlet volume and the transfer volume at least during a portion of a transfer volume cycle. The variable bleed port may include a plate that pivots about a pivot or slides along a slide. The plate may be arc shaped and may arc around a centerline of one of the rotors. The plate may be positioned within an operating cavity. The operating cavity may be defined within the housing between a bearing plate and a main housing of the housing. A method of supercharging an internal combustion engine includes bleeding a transfer volume to an outlet volume through a bleed port.