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392results about How to "Wide range of functions" patented technology

Preparation method for aluminum oxide by direct forming method

The invention discloses a preparation method for aluminum oxide by a direct forming method. The method is characterized in that the aluminum oxide is directly formed by a wet filter cake, wherein pore volume is 0.3-0.8ml / g; a specific surface area is 150-300 m<2> / g; and crushing strength is 30-120 N / particle; the preparation process comprises the steps: a) meta-aluminate containing aluminum or a strong acid salt compound is neutralized with a precipitator solution at a temperature of 30-80 DEG C and pH of 6-9; accessory ingredient is added in a neutralizing process; mixture is aged for at least 10min after neutralizing; b) prepared aluminium hydroxide gel is washed by de-ionized water for 4-10 times; dosage of the de-ionized water for each time is 10-40 times of mass of a dried substrate of prepared aluminium hydroxide; a hydrated alumina filter cake is obtained after washing and filtering; content of the aluminium hydroxide in the filter cake is controlled to be 5-50%; and c) the accessory ingredient is added into one or various liquid in the step a) and step b); the filter cake after washing is formed by a normal forming method; and the formed filter cake is dried at a temperature of 80-120 DEG C and calcined at a temperature of 450-1000 DEG C to obtain a finished product of the aluminum oxide.
Owner:CHINA NAT OFFSHORE OIL CORP +1

Alga microorganism fertilizer agent and preparation method thereof

The invention relates to an alga microorganism fertilizer agent and a preparation method thereof and belongs to the technical field of aquiculture and the like. The alga microorganism fertilizer agent is fermented in such a way that monosodium glutamate waste liquid, alga paste, photosynthetic bacteria, actinomycetes, azotobacters and bacillus subtilis are compounded, and meanwhile, chitosan, chitosan oligosaccharide, microelements and molasses are added according to appropriate parts. The alga microorganism fertilizer agent is formed in such a way that the monosodium glutamate waste liquid is adopted for fermentation, and the raw materials preparation is simple; high-content compound bacteria are contained (the content of the bacillus subtilis is larger than three hundred million / mL, and the total content of the photosynthetic bacteria, the actinomycetes and the azotobacters is larger than one hundred million / mL) and the fertilizing effect is obvious; and the alga microorganism fertilizer agent also has a function of purifying water body, has a wide application range, and is suitable for sea-water and fresh-water cultivation.
Owner:日照巴斯德生物科技有限公司

Ophthalmic lens system capable of wireless communication with multiple external devices

The present invention relates to methods, apparatus, and devices associated with an ophthalmic lens system wherein the lenses may communicate with multiple external devices. More particularly, the present invention relates to an ophthalmic lens system that may communicate with a secondary and a tertiary device, wherein the wireless communication with the secondary and the tertiary electronic external devices may reduce power, communication, and processing requirements within the ophthalmic lenses and may broaden the range of possible functionalities of the ophthalmic lens system.
Owner:JOHNSON & JOHNSON VISION CARE INC

Dual-mode dual-card dual-standby single-pass wireless terminal and communication method thereof

The invention relates to a mobile communication technology, and discloses a method for writing data in a user identification module card and a mobile terminal. In the invention, because a bit in an EF file is used to mark a data record with larger length which is written at present, whether the write of the data record is finished is identified through the bit value. Thus when the mobile terminal or an SIM card is unusual or suddenly power down, the mobile terminal knows that updated data content has been lost partially through the bit value, namely the data record is a wrong data record, so that the data which is updated in the SIM card is judged to an invalid data, and when the mobile terminal or the SIM card is normal or re-electrified, the data can be re-written or selected to be deleted, thereby ensuring the updated data accuracy in the SIM card.
Owner:SPREADTRUM COMM (SHANGHAI) CO LTD

Method for preparing semiconductor photoelectric device

The invention discloses a method for preparing a semiconductor photoelectric device, which comprises the following steps: 1) selecting a substrate; 2) preparing a semiconductor homojunction or heterojunction on the substrate by utilizing the processes of epitaxy, crystallizing, sputtering, evaporating, rotary coating, bonding, welding, linking, chemically corroding or etching; and 3) generating an electrode at the top end or bottom end of the semiconductor homojunction or heterojunction, thereby forming a whole semiconductor device by the substrate, the semiconductor homojunction or heterojunction and the electrode. According to the method provided by the invention, semiconductor junctions in various bandwidths can be provided, a wider working spectral region can be covered, the semiconductor junctions can be prepared on the substrates having different specific structures, and the advantages in preparation and performance characteristics of a planar film structure and a nanometer line are combined together, thereby realizing a semiconductor photoelectric device structure having a wider function.
Owner:王浩

Circularly polarizing plate, display device, and multilayer retarder

A circularly polarizing plate includes: a first retardation layer having negative refractive index anisotropy; a second retardation layer having positive refractive index anisotropy; and a linear polarizer, the first retardation layer and the second retardation layer being disposed such that their optical axes are parallel to each other, the first retardation layer providing an in-plane retardation whose absolute value is |R1(λ)| to light having a wavelength of λ nm, the second retardation layer providing an in-plane retardation whose absolute value is |R2(λ)| to light having a wavelength of λ nm, the first retardation layer and the second retardation layer satisfying the following formulas (1) to (4):|R1(450)|>|R1(550)|>|R1(650)|  (1)|R2(550)|>|R1(550)|  (2)|R2(550)|−|R1(550)|>|R2(450)|−|R1(450)|  (3)|R2(650)|−|R1(650)|>|R2(550)|−|R1(550)|  (4)
Owner:SHARP KK

Illuminated wearable ornament

An electronic ornament that can be worn or attached to or suspended from an object has an LED matrix (21) capable of displaying a user-selected message from a preprogrammed set of graphic symbols or a user-programmed arbitrary pattern or animation. A safety pin (31) or other fastener (34) attaches the ornament to a wearer or to an object, making the display readable by others during conversations and gatherings from a distance of several meters. The user can select the message or pattern using only two buttons (28) and (29), and the selection is retained even when battery (25) is removed. The LED display (21) scrolls messages horizontally such that more than one average text character but less than one average word is visible at a time, making the display surprisingly readable yet economical and small enough to make it easy to wear or use as a lightweight ornament.
Owner:RAPID PROTOTYPES

Chlorin iron (iii) chelate with plant growth regulating activity and its application as plant growth regulator

The invention discloses dihydroporphin (III) chelates having plant growth regulating activity and use thereof as plant growth regulators. The respective structures of the chelates are shown below. In the structures, R may be H, Na, K, CH3 or C2H5, and X may be Cl, OCOCH3 or OH. The dihydroporphin (III) chelates are formed by chelating pyropheophorbide, purpurin and dihydroporphin serving as main ligands and different acid radicals and hydroxy radicals as axial ligands (X) with trivalent ions of iron serving as a transitional metal. The dihydroporphin (III) chelates serving as plant growth regulators are safe, nontoxic and insusceptible to accumulation of residue; the activity of the dihydroporphin (III) chelates are high and the effect of the dihydroporphin (III) chelates are remarkable; and the dihydroporphin (III) chelates can improve the chlorophyll content in plants, promote rooting, and increase germination rate, resistance and yield.
Owner:NANJING NORMAL UNIVERSITY +1

Antibiotic substitute feed additive, its formula, feed with antibiotic substitute feed additive and production method of feed with antibiotic substitute feed additive

The invention relates to an antibiotic substitute feed additive, a formula of the antibiotic substitute feed additive, feed with the antibiotic substitute feed additive and a production method of the feed with the antibiotic substitute feed additive. The antibiotic substitute feed additive is a natural antibiotic component. The formula of the antibiotic substitute feed additive comprises a natural antibiotic component, trace elements, a compound enzyme, probiotics, prebiotics and an acid preparation. The invention also relates to the production method of the feed with the antibiotic substitute feed additive.
Owner:张兴龙 +1

Multifunctional intelligent mattress

The invention relates to a mattress for daily use, in particular to a multifunctional intelligent mattress, which comprises a bottom layer, a bed spread layer, a control panel and a cold-heat exchanging module, wherein the bed spread layer covers the bottom layer, the control panel and the cold-heat exchanging module are arranged on the bottom layer, the control panel is connected with the cold-heat exchanging module and an external power supply through a conducting wire, the cold-heat exchanging module comprises a heat conduction pipe, a heat conduction sheet I, a heat conduction sheet II, a semiconductor refrigeration sheet, a heat radiator I and a heat radiator II, the semiconductor refrigeration sheet is respectively clamped between the heat conduction sheet I and the heat conduction sheet II, the semiconductor refrigeration sheet is closely contacted and connected with the heat conduction sheet I and the heat conduction sheet II, the heat conduction sheet I and the heat conduction sheet II are respectively connected with the heat radiator I and the heat radiator II through the heat conduction pipe, and the semiconductor refrigeration sheet is connected with the control panel. Due to the adoption of the multifunctional intelligent mattress, the defect of single function of other mattresses can be solved, and functions on adjusting temperature according to requirements of different parts of a human body, generating anion, playing music and bell ringing can be realized.
Owner:GUANGZHOU UNIVERSITY

Parking guide method based on vehicle-mounted panoramic system

The invention relates to a parking guide method based on a vehicle-mounted panoramic system. The parking guide method comprises the following steps: (1) splicing scenes output by a 360-degree panoramic system to obtain a 360-degree auxiliary panoramic view around a vehicle; (2) setting a parking position and a parking type through an interactive interface; (3) generating a parking track accordingto the current position and the parking position of the vehicle in combination with the parking type; and (4) generating a parking guide signal according to the parking track, and displaying the parking guide signal. According to the parking guide method provided by the invention, the environment around the vehicle can be displayed in multiple view angles, information interaction between a user and a driver can be formed through the interactive interface of the user, and a parking path plan and a corresponding steering operation sequence are recommended according to the parking position and the parking type input by the user, so as to guide the driver to drive the vehicle in the preset parking position quickly and accurately. The parking guide method provided by the invention is high in intelligent degree and wider in function.
Owner:浙江华锐捷技术有限公司

Liquid fertilizer with seedling function and high stability and preparation method of liquid fertilizer

The invention discloses a liquid fertilizer with a seedling function and high stability. The liquid fertilizer is prepared from the following raw materials in parts by weight: 35-40 parts of calcium superphosphate, 8-12 parts of a mepiquat chloride preparation, 280-320 parts of powdery potassium silicate,5-6 parts of dried blood, 8-12 parts of lake mud, 12-18 parts of sesame seed meal, 4-5 parts of grape seeds, 3-5 parts of pineapple juice, 18-22 parts of monopotassium phosphate, 8-12 parts of potassium feldspar, 6-8 parts of volcanic mud, 15-25 parts of chlormequat chloride, 4-7 parts of cassava residue, 4-6 parts of pinus massoniana needles and 800-900 parts of cassava residue. According to the liquid fertilizer disclosed by the invention, the problem that available silicon is not suitable for being directly used is solved; by virtue of a chelate production method, the obtained fertilizer is stable in performance, wide in function and free of a toxic or side effect; rooting of crops and formation of blossom buds can be effectively promoted; the effect of developing seedlings and stems is reached.
Owner:章云

Unmanned aerial vehicle body

The invention relates to an unmanned aerial vehicle body, which belongs to the technical field of unmanned aerial vehicles. The unmanned aerial vehicle body comprises a cockpit, central supporting arms, cantilevers, landing frames, a buoys, rotor wings and an anti-collision ring, wherein the central supporting arms are mounted on the circumference of the cockpit; the central supporting arms are cross-shaped hollow structures; the cantilevers are Y-shaped hollow structures; one ends of the cantilevers are inserted into the central supporting arms and connected with the cockpit through the central supporting arms; the other two ends of the cantilevers are connected with the inner circumference of the anti-collision ring through anti-collision supporting arms; the upper ends of the landing frames are connected with the central supporting arms; the lower ends of the landing frames are fixed together with the buoys; and rotor wings driven by a motor is arranged on the cantilevers. The invention is applied to the manufacturing of unmanned aerial vehicle bodies and has the advantages of light mass, high strenght, amphibious property and the like.
Owner:绍兴宝旌复合材料技术研发有限公司

Special fruit tree liquid fertilizer and preparation method thereof

The invention discloses a special fruit tree liquid fertilizer. The special fruit tree liquid fertilizer mainly comprises the following components in parts by weight: 1 part of matrine, 2-8 parts of calcium propionate, 1-5 parts of salicylic acid, 6-10 parts of zinc chloride, 4-8 parts of manganese sulfate, 8-12 parts of ferrous sulphate, 1-5 parts of magnesium oxide, 1-5 parts of vitamin C, and 40-60 parts of organic matters. The invention further provides a preparation method for the special fruit tree liquid fertilizer. Compared with the prior art, the special fruit tree liquid fertilizer is stable in property, and multiple in functions, has no toxic or side effects, can effectively kill pests, can prevents fruits from being putrid, can improve yield of fruit trees, and has a favorable application prospect in the field of fruit tree planting.
Owner:JURONG TIANWANG TOWN DAIZHUANG ORGANIC AGRI PROFESSION COOP

Steel belt cleaning machine

The invention discloses a steel belt cleaning machine. The steel belt cleaning machine comprises a main body, wherein an ultrasonic cleaning device is arranged on one side of the inner wall of the main body; a conveyor belt is arranged in the main body and runs through the ultrasonic cleaning device; a partition is arranged on each of two sides of the conveyor belt; a connecting device is arranged on one side of the ultrasonic cleaning device and arranged at the top of the conveyor belt; a friction device is arranged at one side of the connecting device; a water storage room is arranged at one side of the friction device; a water spray device is arranged at the bottom of the water storage room; and a drying device is arranged at one side of the water storage room. As the ultrasonic cleaning device is arranged, the surfaces of steel belts can be efficiently cleaned, and the effects of obvious cleaning effect, no damage to the surface of a cleaned wire, high cleaning efficiency, high safety and reliability and time and labor saving are achieved; as the partitions are arranged on the two sides of the conveyor belt, and the movable friction device is arranged, the steel belt cleaning machine can adapt to steel belts with different thicknesses, and use of diversified products can be met; and as water resources are recycled, energy saving and environmental protection are achieved.
Owner:ANHUI PROVINCE ZHONGYANG PIPE IND

Fruit tree specially-used biological fertilizer, and preparation method thereof

The invention discloses a fruit tree specially-used biological fertilizer. The fruit tree specially-used biological fertilizer is prepared from following ingredients, by weight, 1 part of bacillus mucilaginosus liquid, 40 to 60 parts of soybean meal, 30 to 50 parts of chicken manure, 10 to 30 parts of straw, 20 to 40 parts of monosodium glutamate residue, 20 to 50 parts of Chinese prickly ash, 20 to 40 parts of radix Ilicis pubescentis, 10 to 50 parts of fructus cnidii, 40 to 60 parts of cortex meliae, 50 to 70 parts of rangoon creeper, 30 to 50 parts of Chinese gall, 5 to 15 parts of yeast powder, and 5 to 10 parts of a trace element additive. Compared with existing technology, the fruit tree specially-used biological fertilizer is stable in performance, and wide in functions; no toxic or side effect is caused; and application prospect in the field of fruit tree plantation is promising. According to the fruit tree specially-used biological fertilizer, bacillus mucilaginosus is used for fermentation, and a plurality of traditional Chinese medicine extracts are added, so that the fruit tree specially-used biological fertilizer is capable of promoting absorption on nutritive components in soil, and increasing fruit yield.
Owner:徐州绿油油生物肥料有限公司

Rich content management and display for use in remote field assets

A field asset such as a vending machine includes a coin acceptor, a bill validator, and a card reader all operatively connected to a shared bus. A rich content display device displays color graphics and an extended function adapter (EFA) coupled to the shared bus includes a rich content agent (RCA) to manage rich content displayed on the display. The RCA may include a content management agent (CMA) coupled to a rich content player that executes rich content file for display on the display device. The EFA may include a cashless agent to generate procedural state information. The CMA detects the procedural state information and controls the presentation of rich content on the display device based at least in part on the detected procedural state information. The EFA may include an analytic agent to determine a substantive state of the vending machine including an inventory state and an environmental state.
Owner:CRANE PAYMENT INNOVATIONS INC

Household intelligent system based on set top box control

The invention relates to digital television set top box equipment, in particular to a household intelligent system controlled by using a set top box. The household intelligent system comprises a set top box, an intelligent household control terminal and a background server control center, wherein the set top box is respectively connected with the intelligent household control terminal and the background server control center. The set top box has the advantages of high system intelligentization, simple operation interface and wide range of functions and can be widely applied to the fields of smart homes and the like.
Owner:QINGDAO PENGHAI SOFT CO LTD

Quick coupling

The invention belongs to the field of pipe connection, and particularly relates to a rapid coupling which is applied to the connection pipes and valves of fluids such as gas and liquid. The quick coupling comprises three components, namely a connection body, a sealing ring and a multifunctional movable sleeve; the three components can be freely assembled, disassembled and changed; the sealing ring is arranged between a ring-shaped boss in the connection body and a fixed limiting pin of the multifunctional movable sleeve and only moves in the range of the sealing wall of the connection body; the quantity of square side through holes of the connection body is equal to the quantity of elastic arm barb claws on the multifunctional movable sleeve; the elastic arm barb claws are correspondingly arranged and hooked on the hook walls of the square side through holes; and the inclined planes of the square side through holes of the connection body are staggered away from the inclined planes of the barb claws of the multifunctional movable sleeve. The quick coupling provided by the invention has the effects of overcoming the defects of the conventional quick couplings, enabling the mounting and dismounting between the connection pipes as well as between the connection pipes and the valves to be convenient and quick, being simple in structure, simple in manufacturing process and high in production efficiency, reducing the production cost and having wide application.
Owner:史在恒

Repair agent for treating heavy metal contaminated soil and application thereof

The invention discloses a repair agent for treating heavy metal contaminated soil and an application thereof. Proper wastes of straw crushed matters, turf, modified lignin and roots, stems, leaves and shells of leguminous plants are selected according to the characteristics of the heavy metal contaminated soil, and a chemical adsorbent and a microbial inoculant are optimized and combined. Firstly, the wastes of straw crushed matters, turf, modified lignin and roots, stems, leaves and shells of leguminous plants are separated under the action of other chemical agents; by combining the auxiliary coordinating action of the chemical adsorbent and assisting available matters and excretions thereof generated by microorganisms in the growing process, a matrix and a raw material growing each other are formed; and a microbial community which is complex in composition, stable in structure and wide in function and contains various bacteria is formed through symbiotic and proliferative relationship. The microorganisms in a purifying process of the soil containing heavy metals benefit each other to exert the maximum combined advantages, so that the repair agent has an efficient treatment effect and is low in cost and obvious in economical benefit.
Owner:ZHENJIANG HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG

Application of metal derivative containing chlorophyll and hydrolyzate thereof as plant growth regulator

ActiveCN102273467AExcellent plant growth regulator activityReduced activityBiocidePlant growth regulatorsNon toxicityRoot growth
The invention provides an application of a metal derivative containing chlorophyll and hydrolyzate thereof as a plant growth regulator. The metal derivative containing chlorophyll and hydrolyzate thereof is selected from chlorophyll metal chelate, a chlorophyllin metal chelate and a monomeric metal chelate obtained by separating a chlorophyllin mixture. The chlorophyll is a green pigment extracted from a natural plant raw material and provided with a phaeophytin mother ring structure. The chlorophyllin is a mixture of multiple dihydroporphin components obtained by hydrolyzing the chlorophyll.The monomeric chlorophyllin component is selected from dihydroporphin-e4, dihydroporphin-e6 or phaeophorbide a monomethyl ester. Metal ions comprise bivalent or trivalent transition metal manganese, iron, copper or zinc ions in an oxidation state. The plant growth regulator provided by the invention has the advantages of safety, non-toxicity, low residue, strong activity, good effect, stable product property, controllable and reliable quality and easiness in promotion and application; the chlorophyll content of the plant can be increased, the root growth is promoted, the germination ratio is increased, the stress resistance is enhanced and the yield is also increased.
Owner:NANJING NORMAL UNIVERSITY +1

Special compound organic fertilizer for tobacco and preparation method thereof

The invention discloses a special compound organic fertilizer for tobacco. The special compound organic fertilizer mainly comprises the following components in parts by weight: 25-40 parts of maize straws, 10-25 parts of excrements of livestock, 10-15 parts of oil cake, 0.1-0.6 part of urea and 0.1 part of a decomposition agent. The organic fertilizer is mainly prepared by the following steps: pretreating raw materials, performing primary fermentation, performing secondary fermentation, drying and packaging. The fertilizer is applied to the ditch before tobacco plant transplanting, so that growth of the tobacco plants can be obviously promoted, particularly the plant height and leaf length are increased, and the tobacco planting soil is improved; and therefore, the nicotine content of the tobacco leaf is reduced, the quality and appearance quality of the tobacco leaf are improved, the land resources can be effectively protected due to reasonable application of the fertilizer, and a necessary guarantee is provided for sustainable development of the tobacco leaf. The organic fertilizer is particularly suitable for cultivation of high-quality tobacco leaf. In addition, the organic fertilizer disclosed by the invention is wide in source and low in price, the pollution of straw combustion and livestock manure on the environment is reduced, the preparation method is simple and feasible, and the fertilizer is wide in functions and good in effect.
Owner:FUJIAN AGRI & FORESTRY UNIV

Tablet computer protective sleeve

The invention relates to a tablet computer protective sleeve. The tablet computer protective sleeve comprises a bed plate and a cover plate, wherein both the bed plate and the cover plate comprise cortices surface coats, rigid plastic plate layers and inner lining layers, wherein the cortices surface coats, the rigid plastic plate layers and the inner lining layers are sequentially mutually bonded by an adhesive; the four angles of the bed plate are respectively provided with a convex first fixed jaw, the first fixed jaws and the bed plate are of a whole, the interior of each first fixed jaw is provided with a first plastic extending part extended from the rigid plastic layer in the bed plate, each first plastic extending part is formed into a hook type by virtue of die pressing, the outer surface of each first fixed jaw is provided with a first cortices extending part of the cortices surface coat of the bed plate, each first cortices extending part is covered and bonded on the outer surface of each first plastic extending part; and a connecting part comprises a cortices surface coat and an inner lining layer, one end of the connecting part shares the cortices surface coat and theinner lining layer together with the bed plate or the cover plate, and the other end of the connecting part is bonded with the cover plate or the bed plate and then seamed by use of suture line. The protective sleeve provided by the invention has the characteristics of simple structure, convenience in processing, elegant appearance, convenience in use and wide function.
Owner:NINGBO YINZHOU TEERFEI ELECTRONICS CO LTD

Multi-layer sheet having functional surfaces for use on a 3-d printer and related methods

A multi-layer sheet for use with a three-dimensional printer platform includes an intermediate layer, a polymer receptive coating disposed on one side of the intermediate layer, and a pressure sensitive adhesive disposed on an opposite side of the intermediate layer. The three-dimensional printer includes a platform, a printer head that deposits material to form a product while at least one of the platform and printer head are moved. The multi-layer is sheet disposed on the platform upon which the product is formed with the product formed on the polymer receptive coating, and the pressure sensitive adhesive contacting the platform.
Owner:SHAWSHEEN RUBBER CO INC

Microbial sewage treating agent used for livestock and poultry breeding wastewater treatment

The invention discloses a microbial sewage treating agent used for livestock and poultry breeding wastewater treatment. In the microbial sewage treating agent, proper bacterial strains are selected according to the characteristics of livestock and poultry breeding wastewater for being optimizingly combined, wherein effective substances and secretion substances, generated during growth processes, of the microorganisms are formed into substrates and raw materials which are mutually grown, and a microbial community, which is complex in composition, is stable in structure, is wide in functions, including various bacteria is formed through a mutual symbiotic and proliferative relationship. The microorganisms are beneficial to each other during a purification process of the livestock and poultry breeding wastewater and a best cooperative advantage of the microorganisms is achieved. The microbial sewage treating agent has a high-efficient treatment effect, achieves qualified discharge of the wastewater, is low in cost and is significant in economic benefit.
Owner:陈键

Dyeing wastewater purifying agent

The invention discloses a dyeing wastewater purifying agent. Proper inorganic compound treating agents, organic compound treating agents and microbial inoculants are selected and subjected to optimal combination according to the characteristics of the industrial dyeing wastewater; the microbes generate useful materials and secretions thereof in the growth process to form the matrixes and raw materials for mutual growth; a complex-composition stable-structure wide-function microbial flora with various bacteria is formed through the mutual symbiotic and proliferation relationship; under the multiplex synergistic actions of the inorganic and organic compound treating agents, oxidizers and the like, all the components cooperate in the dyeing wastewater purification process to display the maximum combination advantages; and the dyeing wastewater purifying agent has efficient treatment effect, enables the wastewater to be discharged after reaching the standard, and has the advantages of low cost and obvious economic benefit.
Owner:ZHENJIANG HUAYU ENVIRONMENTAL PROTECTION EQUIP MFG

Control valve

The invention relates to a control valve (10) for controlling the pressure and flow of hydraulic oil from or to the working connections (A, B) of a consumer. The pressure and the pressure flow are controlled by means of at least one sliding piston which can be actuated by at least one drive mechanism and which can be displaced in a slider hole and in co-operating annular channels. The invention is characterized in that the annular channels are symmetrically arranged, whereby a tank connection annular channel is arranged in the symmetrical centre point on a symmetrical axis. Annular channels associated with the working connections (A, B), pump-pressure annular channels, load-sensing annular channels and end-chamber annular channels are arranged behind each other on both sides. According to the invention, the latter can be connected to other channels. The aim of the invention is to create equivalent hydraulic ratios for both working connections A and B and to keep the number of control edges in the control valve to a minimum.
Owner:BUCHER HYDRAULICS
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