31results about How to "Achieve high concentration" patented technology

The invention discloses an electrostatic field-based air sampler and a sampling method thereof. The air sampler mainly comprises a hemispherical electrode (1), a round electrode (2) and a sampling tank (4). Microorganisms with electric charges in air in a sampling space are concentratedly deposited in a liquid medium in a relatively small area in the center of a hemisphere along the direction of an electrostatic field under the action of the electrostatic field, and an air sample is dynamically conveyed under the drive of a micro peristaltic pump simultaneously. The defects that efficiency is low, an automatic sample conveying system is not provided and the like in the prior art are overcome, and the air sample is sampled to the trace liquid medium through the electrostatic field by a novel electrostatic field sampling method, and is dynamically conveyed to a biological/chemical sensor through an inlet and outlet. The air sample is highly concentrated, and the air sampler can be integrated with the sensor and has a good application prospect in the fields of environment monitoring and the like.

The invention discloses a disk type braking device with a grading braking function. The disk type braking device with the grading braking function comprises a braking disk; one side of the braking disk is provided with a first braking head used for generating braking torque for the braking disk; the other side of the braking disk is provided with a second braking head used for generating braking torque for the braking disk, and the second braking head and the first braking head are of the same structure and are opposite in position; the second braking head and the first braking head each comprise a base frame, a first brake head and a second brake head, and the first brake heads and the second brake heads are arranged on the base frames, wherein the first brake head of the first braking head and the first brake head of the second braking head are symmetrical to each other, and the second brake head of the first braking head and the second brake head of the second braking head are symmetrical to each other; and the disk type braking device further comprises a force applying mechanism driving the first braking head and the second braking head to act, the force applying mechanism drives the first braking head or the second braking head to act so as to achieve trapezoidal grading braking on loads, the force applying mechanism drives the first braking head and the second braking head to act at the same time so as to achieve trapezoidal grading braking on the loads, and the force applying mechanism does not drive the first braking head or the second braking head to act so as achieve trapezoidal grading braking on the loads. The structure of the two braking heads is adopted for the disk type braking device, and trapezoidal grading braking on the loads can be achieved.

The invention relates to a diaphragm-free electrochemical lithium extracting system and method. The system is mainly composed of an electrolysis tank, a washing tank, a power supply, and a series of desorption lithium batteries and electronic balance electrodes, wherein the electrolysis tank is divided by a series of partition plates into raw material pools and recovery pools at sequential alternating positions, and the different raw material pools and the different recovery pools are connected in series through connecting pipes correspondingly. A to-be-extracted lithium raw material and recovery liquid are introduced into the raw material pools and the recovery pools correspondingly, and the electrodes are switched between the raw material pools and the recovery pools, so lithium is separated out of the raw material and enriched in the recovery liquid. By means of the system, the grade of the electrolysis tank can be easily improved or lowered, or the position exchange frequency of the electrodes is controlled, and therefore the lithium extracting requirement of different lithium-containing solutions is met. According to the system, in the lithium extracting process, a raw material circuit and a recovery liquid circuit are independent of each other and continuously operate, and therefore the continuous electrochemical lithium extracting can be realized. In addition, since onlythe regular movements of the electrodes are related in the lithium extracting process, automatic operation is easily realized.

The invention relates to a resource recycling process and a resource recycling system for compound bed regenerated wastewater. The resource recycling system for the compound bed regenerated wastewateris used for treating regenerated wastewater generated by ion exchange regeneration. According to the invention, a membrane separation and concentration system and a bipolar membrane system are sequentially arranged; the membrane separation and concentration system is used for carrying out quality-divided recycling on the composite bed ion exchange resin regeneration wastewater, and the bipolar membrane system is used for treating a concentrated solution of the membrane separation and concentration system to obtain acid and alkali which are recycled for the system. The system has the advantages that sulfate radicals are efficiently concentrated with low energy consumption, the salt concentration of acid and alkali prepared by a bipolar membrane is guaranteed, the rest monovalent brine suchas sodium chloride, sodium nitrate and the like is concentrated by a reverse osmosis system and sent to the bipolar membrane to prepare acid and alkali, and mixed acid can be prepared or sulfuric acid and hydrochloric acid can be respectively prepared according to the difference of inlet water quality; reasonable arrangement is realized according to the treatment characteristics of respective membranes; and the energy consumption of the whole system is greatly reduced while efficient concentration is realized.

The invention provides a semitrailer wire harness. The semitrailer wire harnesses comprise a main wire harness and a branch wire harness, the main wire harness comprises a grounding wire, a pluralityof first wires, a plurality of second wires and a shell wrapping the wires into a whole. One wiring end of the grounding wire is divided into two strands, namely a first strand of grounding wire wiring end and a second strand of grounding wire wiring end; the wiring end of the first strand of grounding wire and the wiring ends of the plurality of first wires are used for being connected with a seven-core socket together so as to be connected with different lamps of a light assembly of the semitrailer; the branch wire harness comprises a plurality of third wires wrapped together; one end of each of the plurality of third wires is correspondingly connected with the wiring end of the second strand of grounding wire and the wiring ends of the plurality of second wires respectively; the other ends of the third wires are used for being connected with a five-core socket unit together so as to be connected with a braking system of the semitrailer. In this way, the semitrailer wire harnesses bind the wires used for supplying power to the light assembly and the brake system of the semitrailer together, and the high concentration of the wire harnesses is achieved.

The invention relates to a concentration method and equipment, in particular to the concentration method and equipment for concentrating dairy products by adopting a reverse osmosis technology. The concentration method comprises a step of performing reverse osmosis concentration treatment on raw milk by using a reverse osmosis film, wherein the reverse osmosis concentration treatment comprises low-pressure reverse osmosis concentration treatment and high-pressure reverse osmosis concentration treatment; the low-pressure reverse osmosis concentration treatment means that the reverse osmosis concentration treatment on feeding materials is carried out by adopting a first predetermined pressure, and the high-pressure reverse osmosis concentration treatment means that the reverse osmosis concentration treatment on the feeding materials by adopting a second predetermined pressure, and the first predetermined pressure is less than the second predetermined pressure. The concentration equipmentcomprises a temporary memory unit, a homogenizing unit and corresponding concentration units. Through arrangement of a low-pressure reverse osmosis concentration treatment unit and a high-pressure reverse osmosis concentration treatment unit, feed liquid can be concentrated quickly and effectively.

The present invention discloses an ox horn-like transcranial magnetic stimulation coil capable of increasing the magnetic field depth. The coil comprises a coil body; the coil body is in an arc horn shape formed by a lead wire in a surrounding manner; the coil body continuously forms an arc shape; openings in the two ends of the coil body are opposite; the whole coil body forms an ox horn-like structure in a surrounding manner; the distance between central points of the cross sections of the two ends of the coil body is 5-20 cm; the inner diameters of the openings in two ends of the coil bodyare both 1-25 cm; and a vertical axial included angle between the cross sections of the two ends of the coil body is 0-180 DEG C. By arranging the ox horn-like coil, a magnetic line of force can be constrained and self-guided; and compared with an existing transcranial magnetic stimulation coil, the ox horn-like transcranial magnetic stimulation coil can achieve the effects of highly centralizingmagnetic stimulation, increasing the depth of magnetic stimulation and improving the utilization rate of a magnetic field, and also can achieve the effect of improving the biological effect.

The invention relates to a continuous electrochemical lithium extraction device based on an anion exchange membrane and a lithium extraction method thereof. The device is mainly composed of a power supply, an electrode, an electrolytic tank, a washing tank, anion exchange membranes and the like, the electrolytic tank is divided into a series of raw material pools and recovery pools by a series ofanion exchange membranes, the positions of the raw material pools and the recovery pools are alternately, and different raw material pools and recovery pools communicate sequentially and respectively.Under the action of a pump, the raw material and the recovery liquid are respectively pumped into the raw material pools and the recovery pools, and the lithium in the raw material is transferred andenriched in the recovery liquid through the control of the electrode position. The device is simple in composition and operation, only electric energy is consumed in the lithium recovery process, andthe use of any other toxic reagent does not be involved, so the continuous ion pump lithium extraction device and the lithium extraction method thereof is a green and efficient lithium extraction device and lithium extraction method.

The invention discloses an energy-saving environment-friendly street lamp device with high luminous flux, belonging to the technical field of street lamps. The invention aims to overcome the problem that an existing street lamp is poor in condensation effect. The device specifically comprises a base, a placement plate and a lamp body mechanism, wherein a vertical frame is fixedly connected to the outer wall of the top of the base, an adjusting assembly is fixedly connected to the outer wall of one side of the top of the vertical frame, the placement plate and a bottom plate are both installed on the ground, and the lamp body mechanism comprises a refraction assembly and a bulb. According to the invention, the lamp body mechanism is arranged, the refraction assembly and the bulb are matched with each other, a grid motor is in an in-situ state, and a grid plate forms an annular closed space, so light emitted by the bulb is collected and light leakage is avoided; and meanwhile, the relative position of the bulb is fixed, the light is continuously refracted by a refraction plate in the annular closed space, and most of light rays are transmitted to the bottom through a ferrule, so high light gathering is achieved, luminous flux is improved, light rays are concentrated through the ferrule, and lighting effect is enhanced.

The invention relates to a preparation method of a clavulanic acid tert-butylamine salt. The preparation method comprises the steps: acidifying a water solution of clavulanic acid, and then, extracting clavulanic acid from the water solution of clavulanic acid by using an organic solvent unmixed with water to obtain a clavulanic acid extracting solution; then, carrying out a mixed reaction on theclavulanic acid extracting solution and tert-butylamine serving as an organic amine donor to form a salt, carrying out standing for layering, and collecting a heavy phase to obtain a clavulanic acid tert-butylamine salt solution with high concentration; and finally, adding a cosolvent into the clavulanic acid tert-butylamine salt solution, and carrying out anti-solvent crystallization, filtration,washing and drying to obtain the clavulanic acid tert-butylamine salt. The preparation method of the clavulanic acid tert-butylamine salt disclosed by the invention is simple and convenient to operate, low in energy consumption and capable of reducing the preparation cost, and the quality of a product is high.

The invention discloses a bi-component apple vinegar beverage main agent. The beverage main agent comprises a main agent A and a main agent B. The main agent A comprises concentrated apple vinegar, high fructose corn syrup A, honey, sodium citrate A and caramel color A in a specific ratio, and the main agent B comprises apple vinegar, edible salt, sucralose, sodium citrate B, caramel color B and edible essence in a specific ratio. By mixing and concentrating ingredients with great influence on taste and flavor in advance, an apple vinegar beverage with consistent flavor and stable quality canbe obtained according to standardized operation, and the beverage is low in transportation cost and good in storage performance. The invention further discloses a preparation method of the bi-component apple vinegar beverage main agent, the beverage main agent is stable in performance, easy and convenient to operate and high in production efficiency, and large-scale production can be achieved. Theinvention also discloses an application of the bi-component apple vinegar beverage main agent in rapid preparation of apple vinegar beverages, rapid blending production of the apple vinegar beveragesin different beverage factories can be realized, and the flavor and the quality are stable.

The invention discloses a sensor device for detecting metal wall thickness by pulsed eddy current. The device comprises an I-shaped framework, excitation coils are respectively arranged at two ends ofa horizontal framework of the I-shaped framework, detection coils are arranged at the two ends of a vertical framework of the I-shaped framework, a center hole is formed in the center of the upper portion of the I-shaped framework, a cylindrical magnetic core is installed in the center hole, the outer side of the cylindrical magnetic core is wrapped with polytetrafluoroethylene cloth, a shieldinglayer of a square structure is arranged on the outer side of the I-shaped framework, and the shielding layer is located in the shell. The excitation electromagnetic field energy is large; the frequency components are rich, a space electromagnetic field can be highly concentrated, the detection rate of local corrosion and hole-shaped corrosion is improved, the shielding effect on the external environment is achieved, interference of detection signals is reduced, the filtering effect on the detection signals is achieved, the signal quality is improved, effective detection data are further obtained, and the detection sensitivity is improved.