8 results about "Cascade impactor" patented technology

The invention relates to the technical field of cascade impactors, and discloses a multi-stage impact sampler which comprises an outer shell and a sampling mechanism arranged in the outer shell, the sampling mechanism comprises an impact seat, a middle plate located above the impact seat and an upper cover seat located above the middle plate, a plurality of impact grooves are formed in the upper surface of the impact seat, and the upper cover seat is arranged in the middle plate. An installation groove is formed in the upper surface of the middle plate, an installation hole is formed in the groove bottom of the installation groove in a penetrating mode, the upper end of each impact disc is open and provided with an external step, the lower end of each impact disc is closed and provided with a plurality of holes in an array mode, and the external steps are arranged in the installation grooves in a sleeved mode; a second spring is arranged between the external step and the groove bottom of the mounting groove, the closed end of the impact disc is located in the impact groove, the sampling mechanism further comprises a plurality of vibration assemblies, the vibration assemblies are used for driving the impact disc to vibrate, and the number of the vibration assemblies is multiple.

The application provides a stacking type impact crushing device and a high-energy crusher comprising the device, relates to the field of concrete pavement repairing and constructing machinery, and comprises a frame body, a crushing device, a stacking device and a pulling body. The frame body is provided with a first lifting assembly; the crushing device is slidingly arranged in the frame body; the stacking device comprises a lifting frame, a second lifting assembly and a lifting wheel assembly, the lifting frame is slidingly installed on the frame body and fixedly connected with a first movable end of the first lifting assembly, the second lifting assembly is fixedly installed on the lifting frame, and the lifting wheel assembly is fixedly installed on the top of a second movable end of the second lifting assembly; one end of the pulling body is fixedly connected with the crushing device, and the other end is slidingly arranged around the lifting wheel assembly and fixedly connected with the frame body; wherein the crushing device and the stacking device slide in the frame body along the vertical direction. The application utilizes the principle of a movable pulley to make the crushing device obtain greater gravitational potential energy in a short time and be quickly released, so that the working efficiency is greatly improved.

The application discloses a kind of nanoparticle particle size grading detection devices, it is related to particle detection technical field, including multistage cascade impactor aerosol classifier, multiple shunt bin, one saturation section, multiple condensation sections and multiple counters, the impactor classifier entrance of lower stage is connected with the impactor classifier outlet of upper stage, the particle size of particle gradually decreases by multiple impact plates from top to bottom trapping, each side outlet is connected to the inlet of shunt bin, the first outlet of shunt bin is connected with saturation section after passing through filter device, second outlet is located at saturation section outlet, and nanoparticle can be wrapped by sheath flow in saturation section and enter condensation section after being discharged through second outlet, one counter is provided at the outlet of each condensation section.The application further discloses a kind of nanoparticle particle size grading detection method, is implemented using the nanoparticle particle size grading detection device as described above.The application makes the detection of nanoparticle more accurate, and detection rate is faster, and device volume is smaller.

The invention relates to an atomized product sampling device, a measuring system and a testing method. The atomized product sampling device comprises a two-way electromagnetic valve, a first three-way pipe, a cascade impactor and a suction part. The first three-way pipe is provided with a first connector, a second connector and a third connector which are communicated with one another, one end of the two-way electromagnetic valve is used for being communicated with the outside atmosphere, and the first connector is detachably connected with the other end of the two-way electromagnetic valve; the second joint is used for being detachably connected with an atomization device; one end of the cascade impactor is detachably connected with the third connector, and the suction part can communicate with the other end of the cascade impactor. When the two-way electromagnetic valve is powered off, the two-way electromagnetic valve is opened; when the two-way electromagnetic valve is powered on, the two-way electromagnetic valve is closed, so that liquid drops generated by the atomization device enter the first three-way pipe from the second connector and are collected in the first three-way pipe, and aerosol particles generated by the atomization device can flow through the second connector and the third connector, enter the cascade impactor and are deposited on a collecting piece of the cascade impactor.

The invention discloses a porous nickel filling type high-dust-holding cascade impactor and a filtering method, and relates to the field of industrial production and scientific research. The problems that in the prior art, an inertial impactor still has many technical bottlenecks in practical application, and it is difficult to consider multi-scene adaptability and core performance indexes are solved. The porous nickel filling type high-dust-holding cascade impactor comprises an upper cover, a multi-stage seam plate, a multi-stage collecting plate and a filter material frame, aerosol enters from an inlet of the upper cover, sequentially passes through the multi-stage seam plate and the multi-stage collecting plate to complete filtering and collecting of aerosol particles with different particle sizes, and finally flows out from an outlet of the filter material frame; when the impactor works and aerosol passes through a narrow channel of the multi-stage slit plate, the aerosol deviates from an airflow track and impacts on the multi-stage collection plate filled with porous nickel by utilizing the inertia effect of particulate matters in air flow, so that high-dust-holding particulate matter trapping is realized. And the device is also suitable for different types of aerosol trapping scenes such as aerosol filtration and collection of nuclear power plants, biological aerosol sampling and the like.

The application relates to an atomized product sampling device and a measuring system. The atomized product sampling device comprises a two-way electromagnetic valve, a No. 1 three-way pipe, a cascade impactor and a suction member. The No. 1 three-way pipe has a first joint, a second joint and a third joint which are in communication with each other. One end of the two-way electromagnetic valve is used for communicating with the outside atmosphere, and the first joint is detachably connected with the other end of the two-way electromagnetic valve. The second joint is used for detachably connecting with an atomizing device. One end of the cascade impactor is detachably connected with the third joint, and the suction member can communicate with the other end of the cascade impactor. When the two-way electromagnetic valve is powered off, the two-way electromagnetic valve is opened. When the two-way electromagnetic valve is powered on, the two-way electromagnetic valve is closed, so that the liquid drops generated by the atomizing device enter the No. 1 three-way pipe from the second joint and are collected in the No. 1 three-way pipe, and the aerosol particles generated by the atomizing device can flow through the second joint and the third joint into the cascade impactor and are deposited on the collection sheet of the cascade impactor.

The application discloses a sea-air interface micro-plastic aerosolization detection system and a detection method. The first box body is a closed box body. An air inlet and an air outlet are arranged on the top cover of the first box body. An overflow pipe is horizontally arranged on the top of the first box body. A horizontal slit is arranged on the overflow pipe. The inlet of the overflow pipe is connected with seawater through a pump. The air inlet is connected with a clean air source. The air outlet is connected with a low-pressure cascade impactor. A first box body overflow port is arranged at a set height of the first box body. The first box body overflow port is sequentially connected with a multi-stage pre-filter and a polycarbonate membrane-glass sand core filter. Aerosol particles generated by breaking waves are collected into an atmospheric particulate matter grading sampler. Micro-plastic particles in seawater and air are identified and counted through different light excitation channels of a fluorescence microscope. Finally, the aerosolization degree of micro-plastics at the sea-air interface is quantified through a micro-plastic aerosolization formula.

This invention relates to a differential pressure monitoring and early warning device and method for a porous nickel-filled cascade impactor, belonging to the technical field of aerosol inertial classification and capture equipment. To address the difficulty in achieving online monitoring, visual display, and dust full warning for each stage of differential pressure in porous nickel-filled cascade impactors, this invention utilizes a differential pressure tapping channel, a slider-type pressure measuring component, a push rod transmission component, a three-color indicator block, a visual observation window, and a mechanical self-locking latch to achieve porous nickel block status monitoring and dust full warning. It is applicable to fields such as radioactive aerosol monitoring, ambient air detection, and particulate matter inertial classification and capture.