40results about How to "Reduce cut-off" patented technology

The invention discloses an ecological comprehensive treatment system of a northern mountain river channel. The system comprises three sub ecological systems of an ecological permeable dike built on the upstream of a main stream and a branch stream of a mountain river, a reservoir pond arranged at the middle and downstream area of the mountain river and a wet land communicated with the reservoir pond, and adopts an ecological treatment mode of closure-storage-preservation. The construction method comprises the steps of: a) building of the ecological permeable dike; b) setting of a triangular pyramidal wood pile stone cage; c) building of the reservoir pond; d) planting of plants of the reservoir pond; e) building of a wet land system; and f) recovery of a river bank band. The system and the construction method can effectively intercept the mountain debris flow and the river non-point source pollution, adjust the river runoff, improve the hydrologic conditions of the mountain river in non-flood season, decrease the dry season of the mountain river, and facilitate to recover the ecological system of the mountain river. Meanwhile, traditional depressions and empty ponds in the mountain river can be used in construction, so that the engineering building cost is reduced, and the self-cleaning capacity of river water is improved.

The invention discloses a grinding table of a disc grinder for preparing synthetic fiber pulp, which comprises a grinding plate, wherein the working surface of the grinding plate is provided with a plurality of grooves; the grooves are distributed in a multiple-layer concentric circle mode around the grinding plate; the grooves are evenly distributed on each layer of the concentric circle; grinding teeth are formed on the grinding plate between every two adjacent grooves on the same circle; and a pulp baffle plate is formed at the gap between any two adjacent layers. The invention can prolongthe the residence time of materials in the disc grinder, weaken the cut-off function of the grinding table, enhance the effects of crushing, kneading and fibrillation on the fibers, and greatly improve the microfibrillation degree of the pulp fibers.

The invention provides a batch refiner which comprises a shell, a moving refining plate, a fixed refining plate, a transmission shaft and a gap adjusting mechanism, wherein the moving refining plate and the fixed refining plate are coaxially arranged, and the transmission shaft is coaxially connected with the moving refining plate. The batch refiner is further provided with a fluid pushing device, a fluid inlet channel is arranged on the moving refining plate or the fixed refining plate and penetrates through two bottom surfaces of the moving refining plate or the fixed refining plate, a discharge end face of the fluid pushing device faces the fluid inlet channel, and communicated backflow gaps are reserved between the fluid pushing device and the shell as well as between each refining plate and the shell respectively. Multiple refining can be achieved by circulating pulp between the refining plates when the batch refiner is operated, and times of refining are not limited by the batch refiner; and gaps between the refining plates can be adjusted by the gap adjusting mechanism so as to adapt to changes of the pulp. The batch refiner is simple and flexible in operation.

The invention discloses a polyphenylene sulfide millstone for papermaking pulping. The polyphenylene sulfide millstone is used for a papermaking pulping process and is made of a polyphenylene sulfide composite material. Preferably, the polyphenylene sulfide composite material comprises 30-70 weight percent of polyphenylene sulfide, 5-10 weight percent of toughening component, 20-50 weight percent of reinforced fiber and 0-20 weight percent of wear-resistant component. The polyphenylene sulfide millstone for papermaking pulping is high in thermal stability, preferably, the polyphenylene sulfide composite material with the toughening component and the reinforced fiber is adopted, the elasticity modulus is 10-30 GPa and is close to the plant fiber elasticity modulus, the millstone made of the polyphenylene sulfide composite material has a small fiber cutting effect, and the physical performance of the pulp can be effectively improved.

The invention discloses a sample introduction chamber for a micro-fluidic chip, and a single index micro-fluidic chip. The sample introduction chamber for the micro-fluidic chip comprises a sample filtering cell and a sample introduction portion arranged at the cell mouth of the sample filtering cell; the sample filtering cell is arranged in a palm-leaf fan shape, the liquid outlet of the sample filtering cell is arranged in the narrow sidewall, and the bottom of the sample filtering cell is provided with flow guiding zones; the sample introduction portion is provided with air holes, air guiding grooves are arranged in the positions, close to the wide sidewall of the bottom of the sample filtering cell and correspond to the air holes, and an air gathering zone is arranged between all the air guiding grooves and the flow guiding zones; and every air guiding groove is communicated with the corresponding air hole, and every air guiding groove is communicated with the flow guiding zones through the air gathering zone. The bottom of the sample filtering cell is provided with the air guiding grooves, and the air gathering zone is arranged between the air guiding grooves and the flow guiding zones, so air can be easily discharged during sample introduction, and bubbles are reduced.

The invention relates to an unbleached tissue packing paper and a production method thereof, and belongs to the field of tissue packing paper in the papermaking industry. The whiteness of the unbleached tissue packing paper is 35-50%, a pulp used in the production of the unbleached tissue packing paper comprises 20-30% of wood pulp and 70-80% of unbleached straw pulp, and the beating degree of the unbleached straw pulp is 42-53DEG SR. The unbleached straw pulp with low beating degree is mainly used by the unbleached tissue packing paper, so a technical prejudice that the production of tissue packing paper needs the straw pulp with high beating degree is overcome; the produced paper has the advantages of high strength, low cost, environmental protection, no toxic substances, wide application range; the production method overcomes the problem of high difficulty of the production of the tissue packing paper from the straw pulp; and the produced tissue packing paper has also has uniform quality, good transparency and high physical strength.

The present invention is concerned with the treatment of produced water, obtained from a chemically enhanced oil recovery process using viscosity-increasing polymeric compounds. Said treatment comprises particularly the steps of obtaining a produced water, from an oil-water mixture recovered from an oil-bearing formation, wherein the produced water comprises the viscosity-increasing polymeric compounds; and, of directing the produced water to a specific filtration device, and subjecting the produced water to filtration, for obtaining a retentate stream and a permeate stream. Said process allows particularly obtaining a permeate comprising the viscosity-increasing polymeric compounds, said permeate being substantially free of suspended solids, free oil and emulsified oil.

The invention provides an equal cost tree transfer method and equipment. The method comprises the steps of when BCB (backbone core bridge) equipment detects that any one BEB (backbone edge bridge) equipment does not support ECT (equal cost tree) smooth transfer in the ECT transfer process of an I-SID (backbone service instance identifier), judging whether the unicast forwarding table entry of the I-SID in a new B-VLAN (backbone-virtual local area network) taking the BEB equipment as a source is calculated or not, if so, directly deleting the unicast forwarding table entry of the I-SID in the old B-VLAN taking the BEB equipment as the source, if not, after receiving an LSP (link state protocol) message sent by the BEB equipment, calculating a unicast forwarding table entry of the I-SID in the new B-VLAN taking the BEB equipment as the source, sending the calculated table entry to a data plane, and deleting the unicast forwarding table entry of the I-SID in the old B-VLAN taking the BEB equipment as the source at the same time. The cutoff phenomenon during ECT transfer is reduced.

The invention relates to a coating white cardboard made of various fiber raw materials and a production process thereof, the fiber raw materials of a core layer comprise bleached sulfate softwood pulp, bleached hardwood chemical thermo-mechanical pulp, white cardboard waste pulp and bagasse pulp, and the fiber raw materials of a bottom layer comprise bleached sulfate softwood pulp, bleached sulfate hardwood pulp and high-grade deinked pulp. An interlayer reinforcing agent is sprayed between the layers; the bagasse pulp can be chemically bleached mechanical pulp, and the interlayer enhancer comprises 40-75 parts of spraying starch, 10-20 parts of water-based novolac epoxy resin emulsion and 8-15 parts of styrene-acrylic emulsion; the retention and drainage aid in the slurry of the core layer and the bottom layer comprises PEI, CPAM and bentonite. According to the method, the problem of shortage of wood raw materials can be relieved, the cost is reduced, the defects of the strength, water resistance and the like of fiber pulp are overcome by spraying the interlayer reinforcing agent between layers, the finished pulp can have better water filtering performance and papermaking performance by chemically bleaching the mechanical bagasse pulp, and meanwhile, the strength performance of the finished paper is improved.

The invention discloses a full-automatic cut-off machine for stainless steel profile. The full-automatic cut-off machine comprises a base, wherein an inverted rack is fixed to the top end of the base;a placing table is fixed to the top end of the base, a first rotating shaft is arranged on the outer wall of the front side of the placing table in a penetrating manner and through a bearing, the first rotating shaft extends to a cavity of the placing table and is rotationally provided with a first bevel gear in a sleeve manner at the tail end, and the two sides of the first bevel gear are in engaged connection to a second bevel gear and a third bevel gear correspondingly; first lead screws rotationally penetrate through the inner walls of the second bevel gear and the third bevel gear, the outer walls of the first lead screws are rotationally sleeved with clamping plates, and sliding grooves allowing the clamping plates to slide are formed in the top end of the placing table; water injection pipes are fixed in cavities of the set of clamping plates, penetrate through the inner wall of one sides of the clamping plates, extends to the outer wall of one side of the rack and are connected to a water tank in an inserted mode at the tail end, and a fixing plate is fixed to the bottom end of the water tank; and connecting pipes are fixed to the surfaces of the sides, located in the cavities of the clamping plates, of the water injection pipes and extend to the outer walls of one sides of the clamping plates, and are fixedly provided with atomizing nozzles at the tail ends of the connecting pipes.

The invention discloses a method and device for extracting and scattering tobacco stems synchronously. The method comprises the step one of carrying out feeding, wherein the tobacco stems and solvent are fed into a storage tank according to the set proportion; the step two of carrying out stirring, wherein a push type paddle stirrer is started, and the materials in the step one are stirred and mixed uniformly to obtain a tobacco stem mixture; the step three of carrying out scattering while carrying out extracting, wherein a scattering machine is started, the tobacco stem mixture in the storage tank enters the scattering machine under action of stirring and driving force of the push type paddle stirrer, and then flows back to the storage tank through a circulating pulp pipe by utilizing the centrifugal pumping action generated by a rotor and pulp separating blades, so that the materials are extracted and scattered in a circulating mode; the step four of carrying out secondary extracting, wherein the scattering machine is closed for carrying out secondary extraction. While extracting and scattering are completed, the purposes of high extracting efficiency, good scattering quality and low energy consumption are achieved.

A rubber track (1) has formed in it simple means that can carry a part of abnormal tensile force acting on substantially the entire length in the circumferential direction of the rubber track (1). Theconstruction secures smooth operation of the rubber track and reliably prevents cutting of a steel cord (s1) due to such abnormal tensile force. A core (3) has an engagement section (3b) located in the center region in the longitudinal direction of the core, guide projections (3a) on the outer sides of opposite ends in the longitudinal direction of the engagement section, and wing sections (3c) provided on the outer sides of the guide projections (3a). The core (3) further has tensile force carrying sections (4a, 4b) arranged at positions that are located in the thickness direction of the core and are closer to the outer periphery of the rubber track than the outer peripheral-side surfaces of the wing sections (3c). The tensile force carrying sections (4a, 4b) carry tensile force acting in the lateral direction of the core and also carry pressing force acting in the thickness direction of the core. Corresponding tensile force carrying sections (4a, 4b) of cores adjacent to each otherin the circumferential direction of the rubber track are engaged with each other. Further, a fixation belt layer in the circumferential direction of the rubber track is provided in a rubber track body(1a) at positions related to tensile force carrying sections (4a, 4b).