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

The invention discloses a microwave power amplifier chip carrier and a preparation method thereof. The microwave power amplifier chip carrier includes: a high-silicon aluminum alloy substrate, a chip pad and a film capacitor, wherein the chip pad includes a chip welding metal layer and a carrier welding metal layer. Film capacitors include adhesive layers, dielectric layers, and electrode metal layers. The manufacturing method includes the following steps: providing a surface-polished high-silicon aluminum alloy substrate, sequentially forming an adhesive layer and a dielectric layer in the film capacitor region on the first surface of the substrate; forming a metal layer on the surface of the substrate; and performing scribing after forming a carrier welding metal layer on the second surface of the substrate. The microwave power amplifier chip carrier and manufacturing method provided by the present invention integrate the microwave power amplifier chip pad and the chip capacitor into one body, which can effectively reduce the manufacturing process steps of microwave components and reduce the difficulty of the process. In addition, the chip carrier also has excellent heat dissipation performance, grounding performance and reliability.

The invention relates to a continuous electrochemical lithium extraction system without a diaphragm and a lithium extraction method thereof. The system is mainly composed of an electrolytic tank, a washing tank, a power supply, a series of lithium absorbing and desorbing electrodes and an electronic balance electrode. Among them, the electrolytic cell is divided by a series of separators into raw material pools and recovery pools which alternate in sequence, and different raw material pools and recovery pools are connected in series through connecting pipes. The lithium raw material to be extracted and the recovery solution are respectively introduced into the raw material pool and the recovery pool, and lithium is separated from the raw material and enriched in the recovery solution by switching electrodes between the raw material pool and the recovery pool. The system is easy to increase or decrease the number of electrolytic cell stages, or control the frequency of electrode position exchange, so as to meet the lithium extraction requirements of different lithium-containing solutions. In the process of lithium extraction, the raw material and recovery liquid circuits are independent and run continuously, so continuous electrochemical lithium extraction can be realized. In addition, since the lithium extraction process only involves the regular movement of electrodes, it is easy to realize automatic operation.

The invention relates to an integrated motor speed reduction driving system for a helicopter empennage. The integrated motor speed reduction driving system comprises a disk type motor and a two-levelspeed change mechanism, wherein the disk type motor comprises a stator, a rotor, a roller bearing and a bearing bracket; the two-level speed change mechanism comprises a speed change box body, an output shaft, two gear pairs, a middle shaft and a synchronizer. The improvement is that: the integrated motor speed reduction driving system further comprises a split type middle transmission mechanism;the middle transmission mechanism comprises a rotary sleeve arranged on the output shaft in a sleeving manner, a rotary bracket, a first rotary body, a second rotary body, a third rotary body and thelike. The split type structure of the integrated motor speed reduction driving system reduces non-uniform stress on the output shaft, avoids the impact influence on the output shaft in a gear shiftingprocess, and guarantees stable operation of a helicopter tail rotor. A power end of the integrated motor speed reduction driving system for the helicopter empennage is directly output from a rotor end of the disk type motor, so that high integration of the integrated structure of a motor speed reducer is realized; the disk type motor is powered by an APU or a battery, so as to fulfill the aim ofelectrically driving a helicopter to be balanced or change the direction.

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 islow, 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 relates to a continuous electrochemical lithium extraction device and a lithium extraction method based on an anion exchange membrane. The device is mainly composed of power supply, electrodes, electrolytic tank, washing tank, anion exchange membrane and so on. The electrolytic cell is divided into a series of raw material pools and recovery pools by a series of anion exchange membranes, wherein the positions of the raw material pools and the recovery pools are alternated in turn, and different raw material pools and different recovery pools are connected in sequence. Under the action of the pump, the raw material and the recovery liquid are pumped into the raw material pool and the recovery pool respectively, and the lithium in the raw material is transferred and enriched in the recovery liquid by controlling the position of the electrode. The composition and operation of the device are simple, and only electric energy is consumed in the lithium recovery process, and the use of any other toxic reagents is not involved, so it is a green and efficient lithium extraction device and lithium extraction method.

The invention discloses a membrane system for realizing high concentration, and belongs to the technical field of water pollution treatment. The system includes a pretreatment system, a high concentration membrane system, a water production tank, and a secondary membrane system. The pretreatment system is connected to the high concentration membrane system, the high concentration membrane system is connected to the water production tank, and the water production tank is connected to the secondary membrane system; in addition, the water production tank is connected to the high concentration membrane system, and the secondary membrane system is connected to the high concentration membrane system. The system reduces the osmotic pressure difference between the concentrated water and the product water side by controlling the desalination rate of the membrane module, so as to achieve high concentration at a lower operating pressure, and the highest concentration can reach a state close to saturation.

The invention provides a method and device for integrating resources. The method for integrating resources comprises the following steps of: setting a priority level for a downlink time slot in a cell according to a predetermined time slot selecting rule; setting a priority level for carrier frequency in the cell according to a predetermined carrier frequency selecting rule; and distributing the user service to the carrier frequency with the highest priority level and the time slot with the highest priority level. According to the method and device for integrating resources, the priority levels of the time slot and the carrier frequency in the cell are set according to the predetermined time slot selecting rule and the predetermined carrier frequency selecting rule, and the user is distributed to the specific time slot of the specific carrier frequency in consideration of the time slot centralization and the carrier frequency centralization when the channel is distributed for users in response to the calling request initiated by the users, thereby realizing the highly centralized user distribution and achieving high efficiency and energy conservation of a TD-SCDMA (Time Division-Synchronization Code Division Multiple Access) system.