4results about How to "Reduce plugging rate" patented technology

The utility model discloses an oocyte collector belongs to medical appliance technical field, including protection shell and the collection pipe of activity connection in the protection shell, the inner wall fixed with antiskid air bag of protection shell, the upper half of collection pipe inserts and has the rubber plug of glue, and the surface fixed with adjusting box of glue plug, rotatingly connected with screw rod in adjusting box, the outer wall screw connection has adjusting block of screw rod, the upper and lower both ends fixed with connecting pipe and discharge pipe of adjusting box, the adjusting block is opened and has the flow -guiding hole of being linked with the communication of connecting pipe and discharge pipe, and the connecting pipe is inserted with suction pipe, the rubber plug is provided with negative pressure pipe, and one end fixed with suction hood of negative pressure pipe is located in the inside of collection pipe, and the suction hood is provided with two baffles in parallel. This oocyte collector, solve the problem of pollution and mistake of existing collector pipe after processing easy to cause, improve the accuracy and safety of oocyte collection.

This application relates to the field of asphalt concrete production technology and discloses an asphalt concrete aggregate screening device, including an installation plate and equidistantly arranged installation blocks. The bottom surface of the installation plate is fixedly connected to equidistantly arranged installation rods, and each installation rod has a guide rod slidably connected to its inner wall. This asphalt concrete aggregate screening device, by setting rigid springs, rubber springs, and elastic buffer pads, uses rigid springs and rubber springs between the guide rods and installation rods, with installation blocks below forming an independent spring group. Square rods are connected by connector one, connector two, and bolts. Elastic buffer pads are placed at the connection points. The damping characteristics of the rubber springs absorb uneven vibrations, and the elastic buffer pads effectively absorb vibration differences between segments, improving the amplitude consistency of each part of the device. This solves the problem of uneven amplitude in traditional devices and improves the screening efficiency.

The application discloses a cerebrospinal fluid shunt device and a precise control system thereof, and relates to the medical field.The system comprises an implantable shunt device and an extracorporeal control terminal.A MEMS pressure sensor and an electromagnetic proportional regulating valve are built in the implantable shunt device, a PID control algorithm is executed by a micro control unit, and the shunt flow is dynamically adjusted according to real-time intracranial pressure, so that the defects of traditional mechanical valve pressure fixation and extracorporeal monitoring technology which cannot be intervened in real time are overcome.The system adopts magnetic resonance coupling technology to realize wireless and passive power supply, completely gives up the intracorporeal battery, and avoids the risk of secondary replacement surgery.The extracorporeal terminal can non-invasively set a target pressure and control parameters, and can display the intracranial pressure trend in real time.The optimized bowl-shaped valve core and guide groove design effectively suppresses turbulent flow, and in combination with a closed-loop feedback mechanism, the precision and long-term reliability of the shunt treatment are significantly improved, and the risk of pipe blockage and excessive shunt is reduced.

The present invention provides a method for rapid bottom cleaning of a double-wall steel cofferdam in a deep-water area, and relates to the field of building construction technology, including the preparation of materials and equipment, the assembly of a self-made slag extraction system, the use of a long-arm grab to perform preliminary bottom cleaning in the cofferdam, the use of a self-made slag extraction system to perform precise bottom cleaning in the cofferdam, and the arrangement of divers to go into the water to inspect and accept the quality of the bottom cleaning of the foundation pit. The construction method of the present invention effectively reduces the pipe blocking rate of the bottom cleaning auxiliary equipment, improves the efficiency of the bottom cleaning construction, and reduces the damage rate of the bottom cleaning equipment. Through the self-made slag extraction system, the cost of equipment rental and maintenance costs are reduced, and the slag extraction system is easy to assemble, the difficulty of component manufacturing is low, and it can be conveniently manufactured at a nearby selection plant, saving transportation costs. The method of the present invention overcomes the problems of easy pipe blocking, easy damage, and poor bottom cleaning effect of precise bottom cleaning auxiliary equipment.