9results about How to "Stable working conditions" patented technology

The invention relates to a band-gap reference voltage circuit based on channel length modulation effect compensation. The circuit comprises a Zener voltage stabilization source module which is used for carrying out preliminary step-down on external input voltage to generate primary reference voltage; the linear voltage stabilization source module is coupled to the Zener voltage stabilization source module and is used for generating a linear voltage stabilization source; the first-order band-gap reference circuit module is coupled to the linear voltage stabilization source module and is used for generating a first current subjected to first-order temperature compensation; the lambda modulation effect high-order compensation circuit module is respectively coupled to the Zener voltage stabilization source module and the linear voltage stabilization source module, and the lambda modulation effect high-order compensation circuit module generates a second current with a high-order nonlinear temperature coefficient through a channel length modulation effect; and the starting circuit module is used for providing starting voltage and driving current in the power-on process of the band-gap reference voltage circuit. According to the invention, the reference voltage with an ultralow temperature coefficient can be realized.

The present application relates to the technical field of dental floss box production, and particularly relates to a dental floss box stacking and boxing assembly line, which comprises a conveying mechanism, and the conveying mechanism comprises a processing box, the top of the processing box is fixedly connected with a processing fixing plate, the front end of the top of the processing fixing plate is fixedly connected with a conveying belt, the front end of the conveying belt is provided with a metal plate, the bottom of the metal plate is fixedly connected with the top of the processing fixing plate, the front end of the metal plate is fixedly connected with a mounting plate, and the top of the front end of the mounting plate is fixedly connected with a pushing cylinder; through the setting of the turnover mechanism, the automatic online detection and sorting of the appearance quality of the dental floss box are realized, the detection efficiency and consistency are significantly improved, the defective products are prevented from flowing into the market, through the setting of the baffle mechanism, the accurate completion of the sucking and detecting actions is ensured, through the setting of the stacking mechanism, the automation of the stacking of the dental floss box is realized, and the operation efficiency of the packaging process is improved.

The utility model provides a laser pumping drive circuit, and relates to the technical field of drive circuits. The output end of a voltage-controlled constant current source unit is connected with a pumping laser; the output end of the dual-mode current setting unit is connected with the reference input end of the voltage-controlled constant current source unit; the output end of the temperature control driving unit is connected with the thermoelectric refrigerating unit, and the feedback input end of the temperature control driving unit is used for receiving a temperature sensing signal; the analog input end of the multi-channel signal acquisition unit is respectively connected with a current sampling point of the voltage-controlled constant current source unit, the output end of the monitoring photodiode and a temperature sensing signal node; the positive power supply output end and the negative power supply output end of the power supply management unit are respectively connected with the power supply ends of the voltage-controlled constant current source unit and the multi-channel signal acquisition unit, and the enabling control end of the power supply management unit is connected with an external interface and is used for receiving a digital enabling signal and guaranteeing the temperature stability and reliability of the laser pumping drive circuit.

This invention discloses a pre-distribution assembly, comprising: an inlet diffuser, which includes: a sleeve consisting of an inner cylinder and an outer cylinder arranged coaxially, with a liquid-holding zone between the inner and outer cylinders, and multiple strip-shaped holes on the upper sidewall of the inner cylinder; an annular bottom plate coaxially connected to the bottom ends of the inner and outer cylinders, the annular bottom plate having multiple through holes and / or multiple slits; a top cover, with a sealing cap located at the upper end of the inner cylinder; a rotating shaft coaxially passing through the inner cylinder, the lower end of the rotating shaft passing through the annular bottom plate; a spiral blade disposed on the rotating shaft and positioned opposite to the strip-shaped holes; a conical splash plate linked to the lower end of the rotating shaft; and a stepped distribution plate coaxially disposed below the inlet diffuser, in a stepped shape with a lower center and higher periphery. This invention also discloses a hydrogenation reactor. The pre-distribution assembly of this invention, through the cooperation of the inlet diffuser and the stepped distribution plate, achieves uniform distribution of gas and liquid phase materials across the entire cross-section of an ultra-large-scale hydrogenation reactor.

The present invention provides an optical quantum computing chip integrating a light source and a controlled NOT gate, the chip comprising a coherent excitation light source, a single-bit gate, a controlled NOT gate circuit and a detection module; wherein the coherent excitation light source emits two photons, and two single-bit gates are used to prepare arbitrary single-bit state photons, which are input into the controlled NOT gate circuit, and are detected by the detection module after passing through the controlled NOT gate circuit. The present invention can avoid complex four-wave mixing frequency degeneracy by integrating the light source and the controlled NOT gate on chip, and at the same time, the on-chip integration approach has the advantages of high integration, stable working conditions, and low cost.

The invention discloses an environment-friendly treatment process and equipment for medical wastewater, and relates to the technical field of wastewater treatment.The environment-friendly treatment process comprises the steps of pretreatment, primary treatment, secondary treatment, disinfection treatment, energy recovery and intelligent management. The first-stage treatment is used for preliminarily decomposing organic substances in the wastewater, and the second-stage treatment is used for further degrading the organic substances in the wastewater and generating available energy. Large suspended matters and floating matters in wastewater are effectively intercepted through pretreatment, so that equipment blockage caused by subsequent treatment is prevented, the water quality and the water quantity are balanced by using the adjusting tank, stable working conditions are created for subsequent treatment, the whole treatment process is monitored in real time by utilizing intelligent management, and the treatment efficiency is improved. Data such as suspended matter concentration, PH value, heavy metal concentration and microorganism quantity are collected in real time, data analysis and decision support are performed through an intelligent control system, and the wastewater treatment efficiency is improved.

The utility model relates to the technical field of mine dust prevention and control, in particular to a linkage dust falling system for an underground coal mine fully-mechanized excavation face and an air return roadway, which comprises a heading machine group, a dust falling device, a dust falling device and a dust falling device, the dust removal unit comprises a plurality of spraying groups, and each spraying group is provided with a group of assembly integrated pipes; wherein each level of host is used for sending a wireless signal to identify a spraying state; the water path and the gas path are connected to two ball valves arranged in each stage of main machine through high-pressure rubber pipes, and the water outlet ends and the gas outlet ends of the ball valves are connected with the assembly integrated pipe. In the utility model, the heading machine set is equipped with the dust removal unit, so that the working environment in a fully-mechanized excavation face and an air return way can be obviously improved, the dust concentration is effectively controlled, equipment such as a heading machine can be protected, and the service life of the equipment is prolonged; according to the linkage system of the heading unit and the dust removal unit, the efficient and automatic dust removal effect is achieved by accurately controlling the spraying state, and a powerful guarantee is provided for underground coal mine safety production.

This invention discloses an inlet diffuser, comprising: a sleeve consisting of an inner cylinder and an outer cylinder arranged coaxially, the bottom end of the inner cylinder being higher than the bottom end of the outer cylinder, with a liquid-holding zone between the inner and outer cylinders; an annular bottom plate coaxially connected to the bottom end of the outer cylinder, forming a liquid phase channel between the annular bottom plate and the inner cylinder, the area of ​​the liquid phase channel being less than or equal to the area of ​​the liquid-holding zone; a top cover disposed above the inner cylinder, forming a gas phase channel between the top cover and the inner cylinder; a rotating shaft coaxially inserted into the inner cylinder; at least one layer of helical blades disposed within the inner cylinder and driving the rotating shaft to rotate; and at least one layer of splash plates, which have a downward-opening conical structure, and the splash plates are linked to the lower end of the rotating shaft. This invention also discloses a hydrogenation reactor. In the inlet diffuser of this invention, the gas phase enters the inner cylinder, blowing the helical blades and driving the splash plates to rotate, providing an initial horizontal velocity to the liquid phase, and covering the entire reactor cross-section with a spray area.

The invention relates to the technical field of aerospace, in particular to a temperature control device of a space manipulator joint, which comprises a heating sheet, a heat dissipation surface, a temperature measurement sensor, a heat pipe, a graphite film and a heat insulation material, the heating piece and the heat dissipation face are arranged on the outer wall of an electric box shell of the space manipulator joint and the outer wall of a joint shell of the space manipulator joint except the side wall, where the joint female end of the space manipulator joint is located, of the joint shell. The temperature measuring sensor is arranged on the outer wall of the electric box shell; the heat pipes are installed on the outer walls of the two axial ends of the joint shell through screws. The graphite film is fixed on the inner wall of the joint shell through heat-conducting glue; the outer walls of the joint shell and the electric box shell are covered with the heat insulation material, and except for the heat dissipation face, the heating piece, the temperature measuring sensor and the heat pipe are all covered with the heat insulation material. The heat dissipation device is high in heat dissipation capacity and high in heat dissipation speed, and the problems that heat dissipation is difficult and temperature distribution uniformity is poor during continuous work of a space manipulator joint are solved.