246results about How to "Improve anti-clogging performance" patented technology

This invention provides a designing method for anti-jam drop-fill douches including: 1, setting up a structure model of the runner of a douche to divide it into lattices and design the border condition of the computed regions, 2, applying CFD evaluator to compute the runner of the drop head, 3, getting the velocity of flow field and eddy distribution parameter and determining the position of low flow rate regions in the head runner and the decision factor for pressure energy dissipation, 4, finishing borders of the runner structure and changing the tooth structure to reduce brush of the tooth tine place and the back surface to the runner borders to strengthen the eddy structure of the flow field, 5, computing repeatedly and balancing flow field parameters in the front and back runners to decide the anti-jam ability of the douche and testing the flow-pressure relation of the douche to guarantee its water power performance.

The invention relates to a micro-irrigation permeating tube and a manufacturing method thereof. The micro-irrigation permeating tube comprises a capillary permeating tube (1) made of materials having a capillary permeating function is provided with hydrophilic inorganic fillers and a three-dimensional network capillary water seepage structure of thermoplastic plastics, and has unpowered, self-adaptive, continuous and balanced permeation functions, so that water can automatically permeates outward through a tubing or stops permeating outward according to water level of soil contacted with the capillary permeating tube. The capillary permeating tube further comprises a gel protective layer (4), high water retention tree powder is thrown into gaps of non-woven fabric and absorbs water to swell to form the gel protective layer. The tubing having good water permeating capacity can resist blockage, bacteria and prevent rats; by the adoption of the micro-irrigation permeating tube assisted by other irrigation components, an unpowered, self-adaptive, continuous and balanced permeating system which is applicable to the field of water-saving micro-irrigation is formed.

The invention discloses a swirling electronic-controlled fuel injector of a gasoline engine. The swirling electronic-controlled fuel injector of the gasoline engine consists of an end cover, an iron core, a reset spring, an armature, a valve rod, a valve core and a valve seat which are connected axially in turn, and also comprises a coil frame and a coil arranged at the periphery of the iron core, a casing at the periphery of the coil, a guide sleeve movably matched with the valve core and an injection hole, wherein a flow guide slot is formed between the guide sleeve and the valve seat and communicated with an oil through hole 1 indirectly; a swirling chamber of a ring structure is arranged at the periphery of a sealed ring belt formed by the matching of the valve core and the valve seat in sealed way; the flow guide slot is tangent to the swirling chamber or communicated with the swirling chamber in a proximately tangent direction; the swirling chamber is communicated with the injection hole when the valve core moves upward; and the number of the injection hole is only one. The electronic-controlled fuel injector of the invention enables fuel oil to form high speed revolution in the swirling chamber to form umbrella-like spraying, thereby achieving good atomization effect, overcoming a conflict between the atomization and anti-clogging performance of the conventional electronic-controlled fuel injectors of the gasoline engines, and fulfilling the purpose of having good atomization effect and high anti-clogging performance.

The invention discloses a nano long-acting liquid coolant. The nano long-acting liquid coolant comprises the following components of a base liquid which is composed of diatomic alcohol and a diluent, metal nanoparticles with a particle size of 3-100nm or carbon nano tube particles with a tube diameter of 8-100nm and length of 100-600nm, a dispersing agent, a corrosion inhibition additive, a pH regulator and a fluorescence colorant. The nano long-acting liquid disclosed by the invention is high in heat conductivity coefficient, good in heat transfer performance, good in liquidity and low in cost.

The invention relates to an impulse type drip irrigation system. After passing through an impulse valve which is in front of each capillary pipe, pressurized water enters each capillary pipe in a fast-rising and slowly-reducing pressure impulse flow manner, and is sprinkled to irrigate crops in an impulse way through a micro-sprinkler head mounted on each capillary pipe. The fast-rising pressure can form a strong impact on obstructions while the slowly-reducing pressure cannot enable the water in the capillary pipe behind the impulse valve to generate resilience; and a negative pressure is formed at a water outlet of an irrigator to cause negative pressure suction blockage of the water outlet. The impulse frequency which is adjustable within a large range can be reduced at the same irrigation strength; and an impulse type micro-sprinkler irrigation system without need of a filter is formed by irrigators with larger water outlet apertures. The impulse irrigation mode is used for the micro-sprinkler irrigation to overcome defect of annularly concentrated precipitation amount of other micro-sprinkler irrigation equipment. The impulse type drip irrigation system provided by the invention has the characteristics of blockage prevention, uniform sprinkling and low cost.

The invention discloses an RSU (Roadside Unit)-based distributed real-time navigation method in a vehicular ad hoc network. The method comprises the following steps: collecting and processing route request information and a vehicle position report; interacting region cross time delay information between RSUs and requesting and responding destination region time delay; selecting a region path and designing an intra-domain route; implementing navigation. The entire network is divided into different regions; route decision can be independently performed on a vehicle flow in each region by collecting the route request information and the vehicle position report of the region at the region and RSU interactive region cross time delay information and destination region time delay information of other regions; according to the distributed information acquisition and route decision mode, the calculation complexity of a navigation algorithm is obviously reduced, and the real-time property of the navigation system is improved; the intra-domain route is designed according to the goal of minimum intra-domain average time delay, the road blockage situation is avoided through a flow division manner, and strong anti-blockage capacity of the method is guaranteed.

The invention discloses watering apparatus applied to various water droppers and drop irrigation tubes. The aim of the invention is achieved by the use of shell, runner set in the shell, and entrance and exit communicating with two ports of the runner. It is characterized in that the borderline or centre line of the runner is a separate-shape curve or a curve with separate shape. Compared with a routing labyrinth runner, the invention's has more strong energy-reducing effect, the fluid-state index small, and has the ability to reduce pressure sensitivity of the water dropper, and is wider than the routing labyrinth runner, sand-carrying ability strong and has very strong anti-jamming ability.

The invention relates to a seeping micro-irrigation container and a preparation method thereof. The container is made of a micro-irrigation material with a capillary water seeping function, has a three-dimensional network capillary water seeping structure of inorganic particles and thermoplastic plastics, and has a power-free self-adaptation, continuous and balanced seeping function. According to water potential of soil contacted with the container, water can seep outwards automatically through the capillary network structure inside the container or stop seeping outwards. The container further comprises a gel protective layer (11). The container has good water seeping capacity, can prevent blocking, bacteria and rats, can be used as a mini reservoir independently, can also be connected with a pipeline system, and forms a power-free self-adaptation, continuous and balanced seeping micro-irrigation system.

The invention discloses a fluidic impulse tee joint. The fluidic impulse tee joint comprises an inlet section, a fluidic element and two outlet sections. When the tee joint is applied to a micro-irrigation system, the inlet section is connected with a branch pipe, the fluidic element is located between the inlet section and the outlet sections, the two outlet sections are respectively connected with hair pipes, water flow passes through the inlet section from the branch pipe and enters into the fluidic element, the fluidic element generates impulse water flow, the water flow flows alternately in the two hair pipes intermittently according to a certain frequency, impulse water flow is formed in the hair pipes, the impulse water flow in the hair pipes enters an watering device, intense turbulent fluctuation and impact water flow is formed in the watering device, and the anti-blocking performance and the watering uniformity of the watering device are enhanced. The fluidic impulse tee joint has the advantages of being simple in structure and processing process, low in production cost and convenient to install and use. The fluidic impulse tee joint can be widely applied to irrigation requirements of field crops, vegetables, forest, fruits and the like.

The invention discloses a design method of anti-blockage channel structures of douches of a labyrinth channel structure, which includes five parts of: the drawing of the shape of an original runner structure, drawing of a contour map of sediment concentration with two-phase numerical simulation, redesigning of a boundary line of the runner, sizing of the shape of the runner structure, standardized designing of the boundary line of the runner, etc. The method optimizes parameters of the runner structure of the douche. Compared with the douche in the shape of the original runner structure, in the designed douche, the sediment concentration distribution in the runner is more uniform, thus basically eliminating the phenomenon that a great number of solid particles accumulate at the runner wall. Therefore, the anti-blockage capability of the douche is doubled and the service life reaches twice that of the original service life. The hydraulic performance and prototype of the designed douche remain unchanged and the manufacture technique and material usage of the products are the very same with that of present products.

The invention relates to a micro-irrigation system, a manufacturing method and an application of the micro-irrigation system. An irrigation element of an irrigation section of the micro-irrigation system is an unpowered self-adapting, lasting and balanced infiltrating micro-irrigation pipe or container; the irrigation element comprises a capillary infiltration layer (11) with a three-dimensional mesh structure; and the capillary infiltration layer is made from a capillary infiltrating micro-irrigation material with the three-dimensional mesh structure, and the micro-irrigation element is further coated with a gel protective layer (13). The micro-irrigation system has a composite infiltration structure, and the water can automatically permeate outwards or stop permeating outwards through the infiltrating micro-irrigation element according to the water potential height of the soil contacting the water. The system has the functions of resisting blockage and bacterium and can prevent a mouse, can be widely applied to the field of water-saving micro-irrigation and applied to a desert to play the roles of stabilizing sand and improving the desert, and can be applied to saline and alkaline lands to play the roles of holding down salt and alkali and transforming the saline and alkaline lands.

The invention relates to agricultural irrigation devices, in particular to a water-saving-valve-controlled drip irrigation tank. The water-saving-valve-controlled drip irrigation tank is provided with a closed tank body, a ventilation overflow stop valve is arranged at the top of the tank body, and a water inlet and a water outlet are formed in the bottom of the tank body. The water-saving-valve-controlled drip irrigation tank is characterized in that a water inlet one-way valve is arranged on the inner side of the water inlet in a butt joint mode, an in-out linkage water valve is arranged at the bottom of the tank body and provided with a valve body, a piston cavity provided with a piston and a compression spring is arranged in the valve body, and a water inlet pipe is installed at the end, close to the piston, of the valve body to be communicated with the piston cavity. A water supply opening is formed in the valve body to be communicated with the water inlet in the bottom of the tank body, and a transition water opening is formed to be communicated with the water outlet in the bottom of the tank body. A water drip distribution device is further arranged on the valve body and communicated with the piston cavity. The water-saving-valve-controlled drip irrigation tank overcomes the defects that blocking occurs easily when drip irrigation is conducted through a water dropper, water yield cannot be adjusted, the water dropper is complex in structure, high in manufacturing cost and short in service life, and a system is large in power consumption. Meanwhile, the water-saving-valve-controlled drip irrigation tank is more stable and more reliable in work, low in failure rate and wide in agricultural crop irrigation application range.

An anti-blocking design method based on two-phase stream simulation for the drip irrigator features that according to the mathematical simulation about the two-phase stream in the flow field of said drip irrigator, the region in the flow channel, where the solid is easily deposited, is analyzed out and the influence of the flow channel structure to the delivery and deposition of solid is further analyzed. On this basis, the structure parameters of flow channel are modified and said simulation is repeated until no obvious deposition of solid.

The invention relates to an anti-biological clogging device for a drip-irrigation system. The drip-irrigation system is started, an air intake brake valve is opened, an ozone generator is started, and compressed water which comes from the head part of the drip-irrigation system is sprayed at high speed from a jet orifice of a jet nozzle so as to form the negative pressure in a gas injection cavity; and under the action of the negative pressure, the ozone generator ensures that ozone generated through air ionization enters the gas injection cavity through the air intake brake valve, a check valve and an air inlet pipe along with the air filtered by an air filter, and enters an oscillating cavity for vortex oscillation, stirring and aerification along with the high-speed water flow sprayed by the jet nozzle so as to form 'ozone water' of which gas and liquid are distributed uniformly, and the 'ozone water' enters the drip-irrigation system to kill microorganisms in flow channels and cansynchronously inhibit crop root systems from growing toward the direction of a water outlet of a drip irrigation emitter in an underground drip-irrigation system, so that the aim of biological clogging resistance of the drip-irrigation system is fulfilled. Compared with a method of injecting a chemical agent into irrigation water, the invention has the advantages that: the residue of harmful substances which can pollute the environment is not produced, and the risk of using dangerous chemical agents is avoided.

The invention relates to a pulse micro-sprinkler irrigation system. After passing pulse valves before all capillary pipes, pressurized water enters all the capillary pipes in a mode that pulse flow speeds up under rising pressure and slows down under lowering pressure, and the pressurized water is sprinkled out to irrigate crops through micro sprinkler heads arranged on all capillary pipes in a pulse mode. Quickly rising pressure can produce strong impact on blocking objects, and slowly lowering pressure cannot lead water in the capillary pipes behind the pulse valves to return, form negative pressure on water outlet holes of sprinklers and block the negative pressure sucking type water outlet holes. The pulse frequency can be adjusted in a large range, the pulse frequency can be slowed down under the same irrigation strength, and the sprinklers with large diameter water outlet holes are adopted to form the pulse micro-sprinkler irrigation system which does not require filters. The use of the pulse irrigation mode for micro-sprinkler irrigation overcomes the defects of concentrated annular water output of other micro-sprinkler irrigation equipment. The pulse micro-sprinkler irrigation system has the characteristics of blockage resistance, uniform sprinkling and low cost.

The invention discloses a flow passage structure design method for an anti-clogging drip irrigation emitter. The method is based on computational fluid dynamics CFD and particle image velocimetry PIV, corrects flow passage structure parameters by means of combining CFD simulation, LRP test sample fast manufacturing and PIV visualized test, processes samples, performs a muddy water anti-clogging test according to relevant international standards, and finally realizes product structure setting and mode opening production. The method can remarkably improve anti-clogging property of the emitter. The method is adopted to perform quadratic optimization of a ladder-type flow passage structure of the drip irrigation emitter and standardize optimizing parameters, thereby normal irrigation days of the emitter are added to 11 days from 6 days before the optimization; maximum sand content is decreased to about 5 % from over 60 %; and anti-clogging property of the emitter is remarkably improved.

The invention provides a cellular integral sulfur-tolerant methanation catalyst. The cellular integral sulfur-tolerant methanation catalyst comprises 1, a cellular integral carrier which is prepared from a porous ceramic material and has multiple channels passing through the cellular integral carrier, and 2 active components which comprise a molybdenum oxide as a main active component, a cobalt oxide as a first assistant, and at least one of a zirconium oxide, a cerium oxide and a lanthanum oxide as a second assistant. The invention also discloses a preparation method of the cellular integral sulfur-tolerant methanation catalyst.

This invention describes a means for acquiring GPS P/Y code under jamming conditions. It improves jam resistance by augmenting a component of the GPS signal with one from a different satellite system, such as a low earth orbiting (LEO) satellite. The preferred embodiment of this invention employs the Iridium LEO satellite constellation broadcasting in a 10 MHz wide band about 1,621 MHz. A low-cost, integrated Iridium receiver coupled to the GPS receiver employs a single antenna that is capable of receiving both the GPS and Iridium signals together.

The invention provides a drip irrigation tape with pasters inlaid internally. The drip irrigation tape with the pasters inlaid internally is characterized in that the drip irrigation tape comprises a drip irrigation tape body and a plurality of paster drippers inlaid in the inner wall of the drip irrigation tape body at equal intervals, wherein each paster dripper comprises a filtering part, a labyrinth flow channel and a water outlet groove, the filtering part is composed of a plurality of filtering grooves, the width of each filtering groove is 0.5 mm, one end of the labyrinth flow channel is communicated with the filtering part, the other end of the labyrinth flow channel is communicated with the water outlet groove, and the water outlet channel is communicated with a water outlet hole in the drip irrigation tape body; all the paster drippers are located in two mark lines. The drip irrigation tape with the pasters inlaid internally has the advantages that the drip irrigation tape with the pasters inlaid internally is high in production efficiency, convenient to package, easy to transport, stable in flow, capable of customizing flow according to water requiring characteristics of crops, high in anti-blocking performance and good in water irrigation uniformity; the drip irrigation tape can be directly laid in a specific position to be installed, and thus construction is fast to perform; irrigation can be carried out as long as a valve is opened; the drip irrigation tape with the pasters inlaid internally can be used for accurately applying fertilizer as water and fertilizer integration equipment, time, labor, effort and land are saved, a user is free from worry, production and income are improved, and the drip irrigation tape is environmentally friendly.

The present invention relates to a biochemical treatment reactor for waste water containing quinolone antibiotics, the reactor is composed of CAF (Composite Anaerobic Filter) and FBBR (Fixed Bed Membrane Bioreactor). Such pollutants are decomposed into small molecular compounds, and then degraded by microorganisms in the aerobic reactor, so as to achieve the purpose of removing such pollutants. By improving the traditional reactor, the present invention not only solves the problem that antibiotic wastewater containing quinolone compounds is difficult to biodegrade, but also solves the problem of mud run-off and difficult acclimation in traditional reactors, and opens up a new path for the treatment of this type of antibiotic wastewater new way.

The sheet ambient-flow irrigator includes water inlet channel, water outlet channel and flow channel, the water inlet channel is communicated to the water inlet of the flow channel, and the water outlet channel is communicated with the water outlet of the flow channel. The sheet ambient-flow irrigator features the water inlet channel with filtering net; and the flow channel with linear homogeneously distributed bosses in the middle part and linear homogeneously distributed toothed structures on two sides to form labyrinth flow channel. The flow channel of the present invention has ambient water flow and outstanding energy dissipating effect, and the irrigator may be used widely in irrigation of cotton, sugar cane, vegetable, etc.