255results about How to "Shorten spin time" patented technology

The invention provides a sludge-dewatering compound conditioning agent and an application method thereof. The sludge-dewatering compound conditioning agent comprises a Fenton reagent or / and similar Fenton reagent and a skeleton construct, and the weight ratio of the Fenton reagent or / and similar Fenton reagent and the skeleton construct is 1: (0.05-300); and the skeleton construct adopts a powder body. The application method comprises the following steps: adding the Fenton reagent or / and similar Fenton reagent into sludge slurry, and mixing for oxidation; and adding the skeleton construct into the sludge slurry with the Fenton reagent or / and similar Fenton reagent, and mixing. Due to synergy of the Fenton reagent or / and similar Fenton reagent and the powder type skeleton construct, extracellular polymeric substances in sludge can be destructed effectively, the compressibility of organic substances can be reduced, and the sludge dewatering performance of the sludge-dewatering compound conditioning agent can be improved greatly. The procedures of the application method are simple, the conditions can be controlled easily, the sludge dewatering time can be shortened, and the large-scale treatment of the sludge can be realized.

The invention relates to the technical field of residual sludge treatment, in particular to a process method for conditioning and dehydrating residual sludge. The method particularly comprises the following steps: (1) adding acid into the residual sludge to be treated and with the water content of 90 to 95 percent and adjusting until the pH value is between 4.0 and 6.0; (2) adding quaternary ammonium salt cationic organic matters into the conditioned sludge in the step (1) and performing hybrid reaction; (3) adding a dehydration aid into the conditioned sludge in the step (2) and stirring uniformly; and (4) adding coagulant into the conditioned sludge in the step (3) and mechanically dehydrating after mixing and stirring. The extracellular polymers on sludge flocs are stripped and partially hydrolyzed by a chemical conditioning mode, microbial cells are dissolved, a large amount of bound water is released, and the water permeability of the sludge is improved by utilizing the aid, so that the dehydration performance of the sludge is integrally improved, the water content of the sludge is reduced, the dehydration time is shortened and the dehydration cost is reduced.

The invention relates to a dewatering control method for a roller washing machine. The dewatering control method includes a distribution detecting step and a dewatering step. The distribution detecting step includes that an eccentric value is divided into a plurality of gears, and during distribution, the gears are tried from low gears to high gears. If an actual eccentric value falls at a certain gear, low-speed dewatering is conducted, after a part of water is removed, an eccentric value is detected, and if the eccentric value still falls at the gear, medium-speed dewatering is conducted, otherwise, distribution is conducted again. Eccentric value detecting is also conducted during medium-speed dewatering, and if gears of an eccentric value are the same, final dewatering is conducted, otherwise, distribution is conducted again. During dewatering, low-speed dewatering and medium-speed dewatering are conducted first, eccentric value detecting is conducted, and final dewatering speed is relevant to the gears, and therefore, vibration of the washing machine can be fully reduced, noise is reduced, and box body collision can be avoided. Load with poor balancing performance is distributed at a high gear, dewatering at the set rotating speed is conducted, distribution detecting time can be effectively reduced, and power consumption and dewatering time can be effectively reduced.

The invention provides a tubular pyrohydrolysis treatment method and device for sludge. The device consists of five main systems, namely a feeding system, a modification system, a dehydration system, a heat exchange system, and a purification system; and by adopting a catalyst injecting mode, the sludge is directly heated with medium pressure steam and is subjected to pyrohydrolysis at medium temperature, the remaining heat in the hydrolysis process is fully recycled, and a liquid-solid mixture is obtained, so not only supports of controllable components are provided for a compound fertilizer, but also a filter cake which is subjected to liquid-solid separation has an adjustable moisture content, namely the moisture content of the raw sludge can be reduced to 40 to 60 percent from about 80 percent. Compared with the prior art, the device has the advantages that: the structure is simple, the device can be continuously and stably operated, the sludge pyrohydrolysis temperature is 210 to 250 DEG C, the reaction time is 10 to 20 minutes, the reduction and harmless treatment of the sludge can be economically, quickly and effectively achieved, the sludge can be treated on a large scale, and a novel approach is provided for the sludge treatment and the energy recycling of equipment.

The invention provides a method and a device for the drying and the quality enhancement of lignite. The device comprises a drying/sieving device, a preheating and drying/sieving device, a hot blast heater, a drying drum, a vibration fluidized bed, a cyclone separator, a defogger and a dust remover. The hot blast heater is respectively connected to the drying drum and the vibration fluidized bed, and an outlet of the preheating and drying/sieving device is respectively connected with the drying drum and the vibration fluidized bed. The preheating and drying/sieving device divides the lignite into two stages of big particle diameter and small particle diameter, high-temperature flue gas generated by the hot blast heater is used as a heating medium, the temperature of the flue gas is regulated by the residual low-oxygen gas after oxygen gas is separated by using an air separation system, the drying drum and the vibration fluidized bed are used for producing the quality-enhanced lignite with the big particle diameter and the small particle diameter, different production requirements are met, and part of exhausted tail gas is circularly used for preheating the raw materials of the lignite after being defogged. The invention respectively carries out drying and quality enhancement on the lignite according to the sizes of the particle diameters by grading equipment, eliminates the problem of uneven drying caused by different particle diameters, realizes the effective quality enhancement and the comprehensive utilization of coal resources, and is used for the large-scale process of drying and quality enhancement of the lignite.

The invention discloses a synthetic method of anethole. Anisole and propionyl chloride serve as starting raw materials, are subjected to a friedel-crafts acylation reaction, then are restored through sodium borohydride, and then are catalyzed and dehydrated through organic acid and acid inorganic salt, and finally the anethole is manufactured through rectification. Side reaction is low through the adoption of acylation and reduction, a middle body is not needed to be purified and can be directly put into the next reaction, purification loss and purification cost of the middle body are reduced, yield coefficient is improved, and energy consumption is reduced. A chemical reduction method is utilized to replace a catalytic hydrogenation method, selectivity is high, response speed is fast, side reactions are small in number, and reduction yield coefficient can reach above 98%. Double catalysts are adopted to carry out ordinary pressure low temperature dehydration in dissolvent with a low boiling point, and compared with a negative pressure continuous dehydration method, dehydration time can be shortened by 90%, and the energy consumption is greatly reduced. The total yield coefficient of the method can reach 75%. A product quality index is higher than that of a natural product standard.

The invention relates to a dehydration control method for a washing machine, comprising the following steps that: the eccentric state is detected at the dehydration travel of the washing machine, and when the eccentric state is beyond the set value, the operations of unfastening the washing bag and detecting eccentric state are repeatedly processed, and when the eccentric state is within the set value, a first step of a first intermittent dehydration operation is processed; the eccentric state is detected after the first intermittent dehydration operation, and when the eccentric state is beyond the set value, the operations of unfastening the washing bag and detecting eccentric state are repeatedly processed, and when the eccentric state is within the set value, a second step of a second intermittent dehydration operation is processed; the eccentric state is detected after the second intermittent dehydration operation, and when the eccentric state is beyond the set value, the operations of unfastening the washing bag and detecting eccentric state are repeatedly processed, and when the eccentric state is within the set value, a third step of the main dehydration operation is processed. The invention is characterized in that the RPM of each dehydration operation is selected according to the detecting time of eccentric state, and the dehydration operation is processed according to the selected dehydration RPM. The invention has the advantage of shortening the whole dehydration time.

The invention discloses a spin drying control method and device of a washing machine and the washing machine. The method comprises the following steps: when a spin drying procedure is executed, collecting the speed of a spin drying drum and the acceleration of the spin drying drum in the vibration direction in real time; calculating the vibration displacement of the spin drying drum in the vibration direction according to the speed and the acceleration; when the speed of the spin drying drum reaches the resonance point speed, judging whether the vibration displacement is greater than a preset displacement threshold corresponding to the resonance point speed; if so, controlling the washing machine to perform loose shaking work; otherwise, controlling to increase the speed of the spin drying drum to the stable-gear speed, and judging whether the vibration displacement is greater than the preset displacement threshold corresponding to the stable-gear speed; and if the vibration displacement is less than or equal to the preset displacement threshold corresponding to the stable-gear speed, controlling to continuously increase the speed of the spin drying drum to the next stable-gear speed. By adopting the method disclosed by the invention, high-speed vibration of the spin drying drum can be effectively reduced, and the spin drying time is shortened while the spin drying effect is improved.

Provided is a washing and drying machine by which condition of laundry housed in an inner tub is allowed to be checked during each operation of washing, spin-drying, and drying processes. In the washing and drying machine, an inner cover 13 provided at an outer tub cover 11 for closing the upper opening of an outer tub 3 is formed of a transparent heat resistant resin material, and an outer cover 14 is also formed of a transparent material for readily recognizing the condition of laundry in the inner tub 4 from outside of the washing and drying machine.

The invention discloses a waste plastic recycling dehydrater which comprises a base, a machine shell, a screen drum and a main shaft with mixing blades. The bottom of the machine shell is fixed on the base, the screen drum is fixed in the machine shell, and the main shaft is horizontally installed in the center of the screen drum and penetrates through the screen drum and the machine shell. The two ends of the main shaft are fixed on the base through bearing pedestals, sealing devices are arranged at the connecting positions of the two ends of the main shaft and the machine shell respectively, and the main shaft is driven by a main shaft rotation power device to rotate. One end of the machine shell is provided with a feed port communicated with the interior of the screen drum, the other end of the machine shell is provided with a discharge port communicated with the interior of the screen drum, and a water outlet is formed in the bottom of the machine shell. The dewatering machine is reasonable in stress, and the sealing effect between the main shaft and the machine shell is good. In comparison with an existing structure, the main shaft of the dewatering machine is higher in speed, so that the dewatering effect is better.

The invention discloses a sludge dehydrator, which comprises a frame and a supporting plate connected with the frame; a sludge pumping mechanism and a pressure extrusion mechanism are arranged at two sides of the supporting plate respectively; a frame plate type filter pressing mechanism is arranged between the pressure extrusion mechanism and the connected supporting plate; the filter pressing mechanism comprises a filter pressing unit; a filter plate is arranged in the filter pressing unit; an annular sleeve is sleeved on the peripheral wall of the filter plate; a filter pressing cavity is formed between the filter plate and a front pressing plate; filter cloth is arranged on the surface of the filter plate in the filter pressing cavity; the surface of the filter plate is provided with a filtrate drainage hole; the drainage hole is connected with a drainage passage arranged in the filter plate and extended to the exterior; and the filter plate is interconnected with the surface of arear pressing plate to form a whole, and the middle part of the filter plate is provided with a through hole which is communicated with a pipeline of the sludge pumping mechanism. The sludge dehydrator can improve the filter pressing efficiency and is convenient to control the dryness of mud cakes.

The invention provides a method and a device for controlling dehydration of a washing machine. The method comprises the following steps of: at the starting of the dehydration, acquiring acceleration data; calculating displacement of an outer barrel of the washing machine according to the acquired acceleration data; judging whether the displacement of the outer barrel of the washing machine is greater than a displacement limit value; when the displacement is not greater than the displacement limit value, judging whether the current rotating speed of the outer barrel of the washing machine reaches a set maximum rotating speed, if the current rotating speed of the outer barrel of the washing machine does not reach the set maximum rotating speed, controlling a motor driving circuit to increase a target rotating speed, and if the current rotating speed of the outer barrel of the washing machine reaches the set maximum rotating speed, keeping the current rotating speed until the end of the dehydration; and when the displacement is greater than the displacement limit value, judging whether the current rotating speed is greater than a set safety rotating speed, if the current rotating speed is not greater than the set safety rotating speed, controlling the motor driving circuit to stop a motor, and if the current rotating speed is greater than the set safety rotating speed, controlling the motor driving circuit to decrease the target rotating speed and keeping dehydrating. By the invention, the shortcomings of the conventional method and the conventional device for controlling dehydration of the washing machine can be solved, so that the washing machine can get higher counter balance and dehydration performance.

A high speed energy storage flywheel comprises a rotor which is located in a vacuum chamber provided in a stator housing and is supported by magnetic bearings with respect to the stator housing. A fluid tank used for releasing in a controlled manner, a fluid inside the vacuum chamber and therefore create a braking effect on the rotor by friction.

The invention discloses a method for preparing biochar through destructive distillation of oily sludge, and belongs to the technical field of biochar. The method has the advantages that the oily sludge and biomass materials are utilized as raw materials which are subjected to steps such as drying, activating, destructive distillation, hydrochloric acid soaking and modification to prepare the biochar; the prepared biochar has large specific surface area, high porosity, high fixed proportion of heavy metal and low content of polycyclic aromatic hydrocarbon, and can serve as a heavy-metal ion adsorbent and a soil conditioner.

The invention relates to an embedding vitrification ultralow-temperature storage method for bletilla striata seeds. The method comprises the following steps: collecting integral fruit, cleaning, wiping surfaces with ethanol, immersing in ethanol, flushing with sterile water, immersing in a mercuric chloride solution with a concentration of 0.1%, flushing, absorbing water on the fruit surfaces, splitting capsules in a longitudinal direction, and taking out powder-like seeds; pouring seeds into a sodium alginate embedding solution, stirring uniformly, dropwise putting into a calcium ion embedding solution, and putting in a room-temperature environment and forming embedded beads through solidifying; putting the embedded beads into a PVS2 solution and performing dewatering processing for 20-160 min; putting into a refrigeration tube, adding a PVS2 solution, and then putting the refrigeration tube in liquid nitrogen for refrigeration storage; when seeds are needed, taking out the refrigeration tube, unfreezing and removing the PVS2 solution, and washing; and inoculating the washed embedded beads to a solid VW medium for culture, enabling the seed to germinate, and performing domestication transplanting after seedlings grow to have the height of 6-10 cm. The seeds obtained by employing the method are high in germination rate and the cost can be saved.

The invention discloses a glass circuit board based FPC (flexible printed circuit) board hot-pressing device, processing system and method. The hot-pressing device comprises a rotating platform capable of rotating intermittently, wherein the rotating platform is provided with two layers of fixing boards which are mutually parallel and can rotate simultaneously, one layer is hot-pressing fixing board used for fixing hot-pressing assemblies, the other layer is a jig fixing board for fixing jig assemblies, the rotating platform is divided into a plurality of station areas, and one hot-pressing assembly and one jig assembly are arranged in each station area; each hot-pressing assembly comprises a lifting control mechanism, a hot-pressing head and a buffering mechanism; a loading platform, a first preset platform, an ACF (anisotropic conductive film) attachment assembly, a second preset platform, the hot-pressing device and an unloading platform are mounted on a mounting platform. The work efficiency of the hot-pressing device can be improved, the area occupied by the equipment can be reduced, and the cost is saved.

The invention relates to lubricating grease and a preparation method thereof, particularly relates to water-resistant extreme pressure lithium lubricating grease and a preparation method thereof, and belongs to the technical field of chemical engineering. The water-resistant extreme pressure lithium lubricating grease comprises the following components by weight percent: 70-90% of base oil, 9-15% of fatty acid, 1-2% of lithium hydrate, 0.3-0.7% of calcium hydroxide powder, 0.1-0.5% of antioxidant, 0.3-1.5% of antirust agent, 2-5% of extreme pressure agent and 2-5% of tackifier. The water-resistant extreme pressure lithium lubricating grease has the beneficial effects that the condition that the water-resistant extreme pressure lithium lubricating grease product has a high dropping point and good shear stability under a general condition is ensured; the product has excellent water-resistance, so that less loss in washing of a lot of water is ensured; the water-resistant extreme pressure lithium lubricating grease can work in the presence of water, is not easily softened to run off, and is good in mechanical stability; the product has excellent anti-rust property and extreme pressure anti-wear property; excellent lubrication of heavy duty equipment under a humid condition can be improved; the lubricating surface is prevented from being rusted.

The invention discloses a washing machine and a dehydration vibration detecting device and method thereof. The dehydration vibration detecting device comprises an accelerated speed detecting module arranged on a motor of the washing machine and used for detecting the dehydration vibration accelerated speed of the washing machine, a speed detecting module used for detecting the rotating speed of a dehydration tub of the washing machine, and a vibration calculating module. The vibration calculating module is connected with the accelerated speed detecting module and the speed detecting module, used for calculating the vibration displacement of the washing machine according to the vibration accelerated speed and the rotating speed so as to obtain the vibration situation of the washing machine. By means of the device, the vibration displacement of the washing machine can be calculated according to the vibration accelerated speed and the rotating speed of the dehydration tub of the washing machine during dehydration, the vibration situation of the washing machine is obtained, the washing machine selects the next dehydration action according to the vibration situation, and therefore the purposes of shortening dehydration time and reducing high-speed vibration are achieved.

The invention discloses a method for preparing tuber pickled vegetables through a three-stage air-drying multi-section ultra-high-pressure and positive-negative high-pressure permeation technology. The method comprises the following steps: performing three-stage air-drying on tuber vegetables; storing dehydrated tuber vegetables in a freezer of -18 DEG C for 10-12 months; during production, performing repeated permeation on the frozen tuber vegetables and a pickled vegetable fermenting solution under the positive-negative high-pressure condition, and performing permeation under the multi-section ultra-high-pressure condition to obtain the tuber pickled vegetables. According to the method, the usage amount of salt is reduced, the dehydrating time is greatly shortened, and the storage time of the dehydrated vegetables is prolonged.

The invention discloses a solvent-free epoxy resin as a plugging material and a preparation method and application of the solvent-free epoxy resin. The material is prepared from part A and part B at a ratio of 4:1 to 20:1 by weight, wherein the part A contains the following components by weight: 7.3-13.8% of organic silicon modified epoxy compound, 66.2-70.8% of Pluronic polyol polyether-modified epoxy resin, 15.0-25.0% of a reactive diluent, and 0.2-0.5% of a catalyst A, and part B contains the following components by weight: 99.0-99.7% of modified phenolic amine, 0.2-0.5% of a silicane coupling agent and 0.1-0.5% a catalyst B. According to the invention, reaction between benzyl glycidyl ether and hydroxyl silicone oil is utilized, so that the molecular weight of the reaction product is reduced, the viscosity is reduced, and the surface tension of the product is small for plugging effect. In addition, reaction between Pluronic polyol polyether and epoxy resin is adopted to improve the elasticity of a consolidating body and increase the surface activity of the system for water repelling effect. The solvent-free epoxy resin as the plugging material can be applied to engineering parts with visible water.