5results about How to "Increase pumping speed" patented technology

The utility model discloses a perforated plate inoculation instrument. The porous plate inoculation instrument comprises a rotary uniform mixing sample tube mechanism and an alternate uncovering mechanism, wherein the rotary uniform mixing sample tube mechanism comprises a fixed base plate, a support frame, a rotary fixed frame, a rotating wheel, a driving structure and a sample tube frame. According to the perforated plate inoculation instrument provided by the embodiment of the invention, the full-process automatic operation is realized by arranging the rotary uniform mixing sample tube mechanism and the alternate uncovering mechanism, and the rotary uniform mixing sample tube mechanism comprises the fixed base plate, the supporting frame, the rotary fixed frame, the rotating wheel, the driving structure and the sample tube frame; the driving structure can be used for driving the rotating wheel to rotate so that the fixing plate can turn over the sample tube frame, the rotating speed of the sample tube frame is increased, the uniform mixing treatment efficiency of sample tubes arranged on the sample tube frame is improved, the cover opening and liquid pumping speed is increased in cooperation with the alternate cover opening mechanism, and the inoculation efficiency is improved.

The present application relates to the technical field of turbo molecular pump, in particular to a kind of turbo molecular pump blade, turbo rotor and turbo molecular pump.Turbo molecular pump blade, the pressure surface and suction surface of blade body are both curved surface, the thickness of the blade body gradually decreases from root to top, the blade thickness of the blade body root is 3.5mm-4.5mm, the blade thickness of the blade body top is 1.5mm-2.5mm, the inlet angle of the blade body is 25°-35°, the outlet angle of the blade body is 40°-50°, the blade inclination of the blade body is 0°-20°.Design as smaller inlet angle and larger outlet angle, can improve the ability of capture, discharge and reverse to prevent backflow to the gas pumping capacity.In the case where other parameters are the same, it can improve the pumping speed and compression ratio of turbo molecular pump, can greatly improve the pumping capacity of turbo molecular pump under low pressure working condition.

This invention provides a vapor deposition reactor, comprising a furnace body, a container, a first inlet channel, an outlet channel, and a differential pressure regulating unit. The furnace body has a furnace cavity inside; the container is located in the furnace cavity and has a reaction chamber inside, while the furnace cavity outside the container forms a heating chamber; one end of the first inlet channel extends into the container and connects to the reaction chamber, and the other end is used to connect to an external reaction gas source; one end of the outlet channel connects the reaction chamber and the heating chamber, and the other end connects to the outside of the furnace body; the differential pressure regulating unit includes at least a first regulating unit, which is used to regulate the flow area of ​​the outlet channel.

The reversing valve comprises a valve body assembly and a valve element assembly, the valve body assembly comprises a valve element pipeline part, a feeding pipeline part and a pressure pump pipeline part, the rotating face of the valve element assembly abuts against a pipeline opening and a discharging opening of the pressure pump pipeline part, and the valve element assembly is provided with a material pumping channel and a discharging channel; the material pumping channel is provided with a first port and a second port, the feeding pipeline piece is provided with a linear feeding channel, and one end of the linear feeding channel is communicated with the material storage barrel; and in a material pumping state, the first port is communicated with a pipeline opening of the pressure pump pipeline piece, and the second port directly faces the other end of the linear feeding channel. Through the arrangement of the linear feeding channel, paint in the material storage barrel can directly flow into the valve element pipeline piece along the linear feeding channel, the problems of slow material pumping, large needed pumping force and the like caused by the fact that a paint flowing path is bent are solved, meanwhile, the second port directly faces the other end of the linear feeding channel, the paint can directly flow into the material pumping channel without hindrance, and the paint pumping efficiency is improved. And the material pumping speed is further improved.

The invention relates to the technical field of vacuum, in particular to a TiZrVAl alloy getter, a preparation method and a vacuum tube. The TiZrVAl alloy getter element provided by the invention is an integrally formed part prepared from the following metal powder in atomic percent: 25 to 35 percent of Ti, 25 to 35 percent of Zr, 25 to 35 percent of V and 10 to 25 percent of Al, and the total atomic percent is 100 percent; a porous air suction structure is arranged on the surface of the TiZrVAl alloy getter element. The getter element with the specific porous structure is prepared by introducing the Al element into the TiZrV alloy and combining the 3D printing technology, the activation temperature of the getter is remarkably reduced, meanwhile, the pumping speed and the suction capacity are greatly improved, and the service life is greatly prolonged.