17results about How to "Meet precise requirements" patented technology

The invention provides welding equipment for machining engineering machinery parts, and relates to the technical field of mechanical welding, the welding equipment comprises a bottom plate, and the top of the bottom plate is fixedly connected with a power box. A mechanical welding arm is adjusted by arranging a first motor, a driving synchronous wheel, a threaded sleeve and other parts, meanwhile, angle adjustment is conducted on a rotating box through a rotating motor, a belt wheel and other parts, an adjusting motor is started, the adjusting motor rotates to drive a worm to rotate, and therefore a worm wheel is driven to rotate; a worm wheel rotates to drive a positioning rod to rotate, a clamping box rotates through a limiting ring and a ball, the horizontal angle of an accessory is adjusted, an electric push rod is started, a rotary disc is driven to rotate through the electric push rod, and then a pull strip is driven to pull a clamping block to efficiently clamp and fix the accessory, so that the efficient fixing effect is achieved; and the welding efficiency is improved.

The utility model discloses a culture medium split charging device, and relates to the technical field of culture medium split charging. The device structurally comprises a peristaltic pump, a rubber hose, a trigger switch, a suction guide pipe, a split charging guide pipe, a fixed rack and a split charging guide pipe mounting seat, wherein the suction guide pipe and the split charging guide pipe are mounted at two ends of the rubber hose; the rubber hose is mounted on the peristaltic pump; and the split charging guide pipe mounting seat is clamped and mounted on the fixed rack through bolts and nuts. According to the utility model, the starting and stopping of the peristaltic pump are controlled by adopting the trigger switch, an operator can start the peristaltic pump to carry out split charging and pipetting only by manually triggering the trigger switch, the operation is simple and convenient, and the split charging efficiency is improved; the peristaltic pump has a quantitative metering function, the fixed output quantity of each time of starting can be preset, the peristaltic pump pumps according to the set liquid quantity after a trigger switch is pressed down in the split charging and liquid transferring process, and the peristaltic pump automatically stops after the liquid quantity reaches a set value, so that the liquid quantity of each time of split charging of a culture medium is stable and consistent, and the working efficiency is improved. And the accurate requirement of molecular biological experiments on the culture medium split charging amount is met.

The present application belongs to the technical field of valve control, and particularly relates to a precise electric actuator and method for regulating valve. The electric actuator comprises a communication pipe assembly and a butterfly valve assembly. The communication pipe assembly comprises a pipe body, one side of the outer wall surface of the pipe body is fixedly connected with one end of a connecting pipe, the other end of the connecting pipe is fixedly connected with a blocking column. The butterfly valve assembly comprises a butterfly valve body, the butterfly valve body is accommodated in the inner cavity of the pipe body, the top of the butterfly valve body is fixedly connected with one end of a first main shaft, the other end of the first main shaft is coaxially fixedly connected with one end of a second main shaft, the first main shaft is inserted into the connecting pipe, and the blocking column is wrapped on the outer wall surface of the second main shaft. The present application can ensure that the regulating valve is always in full open state, so that the flow capacity is stable and reliable, and the precise requirement of maximum flow for working condition is met. The present application can improve the efficiency of on-site debugging, troubleshooting and emergency operation, and can improve the precision of repeated positioning and realize high-precision control of valve opening.

The utility model discloses a portable pH electrode for ultrapure water occasion uses relates to ultrapure water technical field, including electrode tube, the electrode tube outer wall fixed mounting has the connecting pipe, the connecting pipe top fixed mounting has the connecting ring, the connecting ring top inserts the hose, the hose outer wall is equipped with the mechanism of easy to dismantle and flow rate control, the mechanism of easy to dismantle and flow rate control includes the adjusting plate, the adjusting plate both ends inwall all are equipped with the sliding slot, in the utility model, through easy to dismantle and flow rate control mechanism, utilize the rotation of adjusting lever to drive the sliding block to move in the sliding slot, and then through the push -pull rod to make the outer clamping lever and inner clamping lever relatively rotate and press the hose, because inner clamping lever can slide in the outer clamping lever inwall, can more nimblely adjust the degree of extrusion, to realize the more fine flow rate control of potassium chloride solution in the hose, better satisfy the accurate requirement of pH measurement to ultrapure water occasion.

The utility model provides a gas regulating valve group applied to low-power laser equipment, which is characterized in that an air channel and a left side air inlet channel arranged on a base are communicated with a first switch valve arranged on the upper surface of the base so as to control the ventilation and air cutoff actions of air; an oxygen channel and a right air inlet channel which are formed in the base are communicated with a second switch valve mounted on the upper surface of the base so as to control the ventilation and cutoff actions of oxygen; a right air inlet channel and an exhaust channel are formed in the base; the right air outlet channel is communicated with a proportional valve mounted on the upper surface of the base; the left air inlet channel and the right air outlet channel are communicated through a transition channel in the base, and a steel ball is arranged in the transition channel in a sliding mode to block the left air inlet channel or the right air outlet channel so as to achieve the shuttle valve function. The transition channel is communicated with a shuttle valve structure air outlet formed in the base. The shuttle valve, the proportional valve and the two sets of switch valves are integrally mounted, so that the compactness of the valve bank is improved, interfaces are reduced, and the possibility of leakage is greatly reduced.

The utility model discloses a printing head assembly and additive manufacturing equipment, and relates to the technical field of additive manufacturing, and the printing head assembly comprises a base, a telescopic adjusting mechanism, a printing head body and an elastic buffer piece; the telescopic adjusting mechanism is provided with a fixed part and a movable part, the fixed part is connected to the base, and the movable part is adjustably and slidably matched with the fixed part along a first path; the printing head body is in sliding fit with the movable part along a first path, and the printing head body is used for conveying a thermoplastic wire to a printing area; the first end of the elastic buffer piece is connected to the movable part, and the second end of the elastic buffer piece is connected with the printing head body; the elastic buffering piece is used for preventing the printing head body from moving backwards on the first path under the elastic acting force. According to the scheme, fine position adjustment of the printing head on the feeding path can be achieved, meanwhile, the elastic device is arranged, so that the printing head has certain buffering capacity, and damage to the printing head caused by accidental collision is reduced.

The utility model provides a conveying device for production and packaging, which relates to the technical field of conveying devices and comprises a workbench, four supporting columns are fixedly mounted at the bottom of the workbench, and a square hole is formed in the top of the workbench. In the utility model, firstly, the motor I runs to drive the two rotating rods to rotate at the same time so as to drive the conveying belt to run to move the special wax package, so that long-distance and continuous material transportation can be realized, the moving time of the material between different work stations is greatly shortened, and the overall production efficiency is improved; the conveying belt can stably run at a high speed, the efficiency of a packaging production line is further improved, the conveying belt can accurately convey materials to a designated position, the accurate requirement of packaging production is met, the requirement for manual carrying is reduced, and the labor cost is reduced.

The present invention provides a system and method for online monitoring of bolt preload of a wind turbine, including a monitoring probe, a temperature sensor, a data acquisition and processing device, and a monitoring system. By accurately positioning a specific wind turbine, a blade, and a bolt, accurate position monitoring of a specific bolt is achieved; by real-time monitoring of the tightening stress of the entire circle of connecting bolts at the root of the wind turbine blade detected by ultrasonic wave, and by correcting the strain error caused by the temperature change of the environment in which the bolt is located, a more accurate actual tightening stress of a bolt is obtained, and it is determined whether the bolt is loose or broken, and early warning and fault judgment are carried out in time, so that the operation and maintenance personnel can grasp the health status of the blade root bolt at any time, filling the gap of the current lack of an online real-time monitoring system for wind turbine bolts.

The utility model discloses a micro-nano bubble generator capable of controlling the temperature of micro-nano bubble water, which comprises a micro-nano bubble generator main body, the input end of the micro-nano bubble generator main body is provided with an input pipe fitting I, and the output end of the micro-nano bubble generator main body is connected with a temperature control assembly through an input pipe fitting II; the temperature control assembly comprises a mounting support, a cooling fan and a cooler, the cooler is mounted at the bottom of the mounting support, the cooling fan is fixed to the top of the mounting support, and a second pipeline and a first pipeline are fixed to one side of the cooler. According to the micro-nano bubble generator, the generated micro-nano bubble generator body can be effectively cooled through cooling liquid, the temperature of the cooling liquid is monitored in real time through the temperature sensor, backflow and re-cooling of the cooling liquid which does not reach the standard are achieved in cooperation with the first three-way electromagnetic valve, the second three-way electromagnetic valve and the backflow pipe, and it is ensured that the temperature of the output cooling liquid is within the set range; and the accurate requirements of different application scenes on the temperature are met.

The invention provides a large-flow ambient air particulate matter rectangular filter membrane cutter which comprises a base and a cutting cover. A rectangular frame is arranged on the base; a clamping groove is formed in the frame; a cylinder is arranged in the center of the cutting cover, a cutting reserved opening is formed in the lower portion of the cylinder, a cover plate is arranged in the middle of the cylinder, a groove is formed in the lower portion of the cover plate, and different numbers of ceramic blades are placed in the groove according to different cutting requirements. According to the device, multiple cutting modes are adopted, the rectangular filter membrane can be accurately divided into different parts by selecting different blades through the eight-part cutting reserved opening of the first cutting cover and the #-shaped cutting reserved opening of the second cutting cover, and the accurate requirement for filter membrane cutting in experiment and practical application is met; the device is used for precisely dividing the large-flow ambient air rectangular filter membrane into two parts, three parts, four parts, eight parts and nine parts, the filter membrane can be conveniently and rapidly cut, the experiment efficiency is improved, and the experiment error in the pretreatment stage is reduced.

The invention provides a novel fixing device for mouse brain imaging. The novel fixing device comprises a first fixing assembly, the bottom of the first fixing assembly is connected with an adjusting platform, the bottom of the adjusting platform is connected with a mounting bottom plate, a second fixing assembly is arranged on the mounting bottom plate, and one end of the second fixing assembly is close to the first fixing assembly; the first fixing assembly comprises an inverted-T-shaped plate, the inverted-T-shaped plate is installed at the top of the adjusting platform, two supporting cylinders are symmetrically arranged at the positions, close to the second fixing assembly, of the inverted-T-shaped plate, the top of each supporting cylinder is movably connected with a first connecting plate, a brain fixing piece is connected between the two first connecting plates, and the brain fixing piece is fixed to the head of a mouse. A positioning hole is formed in the brain fixing piece and used for positioning a window area for mouse brain imaging. According to the device, the stress reaction of the mouse in the experiment process is relieved, the reliability and repeatability of the experiment are improved, the absolute stability of the mouse in a waking state is ensured, and the accuracy of experiment data is effectively improved.

The utility model discloses a laser precise synchronizing signal output system, which comprises a central control system, a high-voltage switch trigger, a high-voltage generator, a high-voltage switch, a laser generating unit and detection equipment, the central control system comprises a single-chip microcomputer, a charging signal generating circuit and a synchronizing signal generating circuit. The charging signal output end of the single-chip microcomputer is connected with the high-voltage generator, and the control output end of the single-chip microcomputer is connected with the input end of the charging signal generating circuit. Three output ends of the charging signal generation circuit are respectively connected with the input ends of the high-voltage generator, the high-voltage switch trigger and the synchronous signal generation circuit, and respectively send a path of simultaneous sequence charging signals; the output end of the synchronous signal generation circuit is connected with the detection equipment to send a synchronous control signal, so that the detection equipment is started, and the delay time of the synchronous control signal can be adjusted to control various detection equipment to work synchronously.

The invention discloses a medical microscale sample injector, and relates to the field of experimental appliances, the medical microscale sample injector comprises a shell, a quantitative sample injection driving assembly, a microscale sample injection driving assembly, a gun head sleeve, a first piston, a first connecting rod and a liquid storage gun head, the interior of the shell is a hollow cavity, and the gun head sleeve is arranged at the bottom of the inner cavity of the shell; the bottom end of the gun head sleeve penetrates through the cavity wall of the shell and then communicates with the liquid storage gun head, the first piston is slidably connected to the interior of the gun head sleeve, one end of the first connecting rod is fixedly connected with the top of the first piston, and the other end of the first connecting rod penetrates through the gun head sleeve and then is in threaded connection with the working end of the micro sample adding driving assembly; the trace sample adding driving assembly and the quantitative sample adding driving assembly are arranged on the top of the inner cavity of the shell side by side, and the gas outlet end of the quantitative sample adding driving assembly is communicated with the gun head sleeve through a pipeline. The continuous liquid injection device is simple in structure and convenient to use, and continuous liquid injection operation of multiple times of quantitative and non-quantitative dropwise adding of a sample solution is achieved.

The utility model discloses a program-controlled variable optical attenuator. The program-controlled variable optical attenuator comprises an optical splitter, a variable optical attenuation unit, an optical detector and a control unit, the optical branching device comprises a first optical branching device and a second optical branching device which are responsible for branching input optical signals, so that the flexibility and the expansibility of the system are improved. The adjustable light attenuation unit can change light transmission loss so as to adjust the light attenuation amount. The optical detector detects the attenuated optical power and transmits information to the control unit. The control unit is connected with the light detector and the adjustable light attenuation unit, and adjusts the adjustable light attenuation unit according to the light power information feedback to form a closed loop feedback system. The system can accurately control the light attenuation, track the change of the light signal in real time, ensure the stability of the output light power, improve the reliability and stability of the system, and meet the accurate requirements of different optical communication systems on the light signal power.

This utility model discloses an integrated skid-mounted pressure reducing device for high-pressure steam, relating to the field of pressure reducing devices for high-pressure steam. Existing high-pressure steam pressure reducing devices suffer from problems such as difficult condensate disposal, low energy utilization, and low integration. This device includes an inlet section assembly, a pressure reducing and regulating section assembly, an outlet section assembly, a dual condensate drainage system, and a safety protection system, arranged sequentially along the steam flow path. The system is integrated and installed on a skid-mounted base. It achieves precise condensate drainage through the dual condensate drainage assembly, closed-loop control through a pneumatic regulating valve, and optimized flow field through a gradual pipeline design. It also features dual N3 outlets for N3 steam diversion. This solves the problems of corrosion and low efficiency of traditional devices, achieving rapid installation, precise pressure reduction, high efficiency and energy saving, improving system stability and adaptability, and is suitable for steam demand in various industrial scenarios.

The utility model provides an integrated circuit chip placing rack structure, which relates to the technical field of chip placing racks and comprises an adjusting mechanism, the adjusting mechanism comprises a first fixing rack, a second fixing rack is arranged at a position close to one side of the first fixing rack, and a supporting mechanism is arranged at the bottom of the second fixing rack. According to the utility model, through the installed adjusting mechanism, the distance between the first fixing frame and the second fixing frame can be flexibly adjusted according to actual needs by adjusting the positions of the sliding groove and the sliding block so as to adapt to chips with different sizes, and through the matching design of the sliding groove and the sliding block, higher adjusting precision can be realized, and the chip fixing frame is convenient to use. The distance between the first fixing frame and the second fixing frame is ensured to be adjusted accurately so as to meet the requirement for the accuracy of the size of the chip, meanwhile, due to the fact that adjustment can be conducted at any time according to needs, the structure is further suitable for integrated circuit chips of various sizes, and high universality and applicability are achieved.