18 results about "Particulate media" patented technology

The utility model discloses a quick opening and closing type safety valve, which relates to the technical field of safety valves and comprises a valve seat and a valve cover, the valve cover is positioned on the valve seat, a valve rod is arranged in the valve cover, an adjusting nut is arranged at the upper end of the valve rod, and an electromagnetic coil mounted in the valve cover is arranged on the lower side of the adjusting nut. A spring located in the valve deck is arranged on the peripheral side of the valve rod, a guide sleeve is arranged in the valve seat and installed in the valve deck, and the lower end of the valve rod penetrates through the guide sleeve. Millisecond-level opening and closing of the valve clack and precise graded pressure relief are achieved through magnetic force driving, sudden drop of system pressure is avoided, the multi-stage stepped valve element is combined with the spiral flow channel to form centrifugal vortex, the surface of the valve element is actively washed, particulate matter deposition is effectively removed, flow resistance is reduced, the self-cleaning and wear-resisting characteristics are achieved, kinetic energy is buffered in cooperation with the damping ring, and the service life is prolonged. And the sealing structure is suitable for high-pressure, corrosive and particle-containing medium scenes.

This invention discloses a variable stiffness tactile detection sensor for marine weld joints based on luminous flux modulation, belonging to the field of industrial inspection and tactile sensing technology. It includes: an integrally molded silicone body, a circular circuit board, a top rigid support, and an optical modulation assembly. The silicone body has an integrally molded central optical cavity, with a clamping cavity area formed outside the central optical cavity. The central optical cavity is surrounded by side walls and a lower wall, with the side walls connected to the outer wall of the silicone body via connecting sections. The circular circuit board is mounted at the lower part of the central optical cavity and has a light-emitting unit and multiple photosensitive units disposed thereon. The optical modulation assembly includes at least two polymer-dispersed liquid crystal films, which are arranged in the optical path area between the light-emitting unit and some of the photosensitive units to modulate the luminous flux distribution within the central optical cavity. The clamping cavity area is filled with particulate medium to form a particulate clamping variable stiffness structure. The top rigid support is mounted on the upper part of the central optical cavity and has a negative pressure connection interface communicating with the clamping cavity area. This enables the detection of multi-dimensional tactile features of the weld joints.

System for measuring the moisture content of a granular medium. This description relates to a system (1) for measuring the moisture content of a granular medium (2) comprising a collection element (3) intended to be placed in the granular medium (2) in contact with the granular medium (2), and configured to collect water present in the granular medium (2), a reservoir (14) for receiving the collected water, moisture sensors (16) in regions at least partially distinct from the granular medium (2), at least one temperature sensor (24), at least one conductivity sensor (26) configured to measure the conductivity of the water received in the reservoir (14), and transport means (18, 21) configured to transport water from the reservoir (14) to the conductivity sensor (26). Figure for the abstract: Fig. 1

The invention belongs to the technical field of chemical equipment, and relates to an orifice flow disc type liquid distributor suitable for a high-viscosity or granular medium and a use method. The orifice flow disc type liquid distributor comprises an orifice flow disc, an outer cylinder is arranged on the orifice flow disc, air rising holes and liquid distribution holes are evenly formed in the orifice flow disc, the liquid distribution holes are distributed around the air rising holes, air rising pipes are arranged on the air rising holes, liquid baffles are arranged on the air rising pipes, the liquid distribution holes are of an inverted-cone-shaped structure, rib plates are arranged below the liquid distribution holes, and the rib plates are arranged on the outer cylinder. Liquid distribution plates are arranged at the lower ends of the rib plates. The liquid distribution holes of the inverted-cone-shaped structure are adopted, liquid flowing resistance can be reduced, the diameter of the upper end is large and can rapidly receive liquid in the liquid distribution groove, the diameter of the lower end contracts, local acceleration can be formed, kinetic energy is more stable when the liquid flows out, and uneven liquid outlet caused by flow fluctuation is avoided.

An enhanced activated sludge system for removing PFAS from a flow of wastewater and / or landfill leachate includes at least one bioreactor configured to receive a flow of wastewater and / or landfill leachate and configured to promote growth of biological flocs. The at least one bioreactor mixes the biological flocs with a particulate media to form biological flocs enmeshed with the particulate media which adsorb and remove a majority of the PFAS from the flow of wastewater and / or landfill leachate and outputs a flow of biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto and treated wastewater and / or landfill leachate having a majority of the PFAS removed. A separation subsystem separates the biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto from the treated wastewater and / or landfill leachate and outputs a flow of treated wastewater and / or landfill leachate having a majority of the PFAS removed.

The utility model discloses a piston sealing assembly which comprises a piston head body, a sealing groove is formed in the circumferential face of the piston head body, an O-shaped ring tightly connected with the sealing groove is embedded in the sealing groove in a sleeved mode, and the highest point of the O-shaped ring protrudes out of the circumferential face of the piston head body. Scraping lips are arranged on the circumferential face of the piston head body and close to the top edges of the two side end faces, and the highest points of the scraping lips protrude out of the circumferential face of the piston head body. The highest points of the scraping lips on the two sides of the piston head body protrude out of the circumferential face of the piston head body, and the scraping lips on the two sides of the piston head body make contact with fine particles attached to the inner wall of a plunger rod cylinder barrel earlier than the piston head body. The scraping lip protruding out of the piston head body can scrape away fine particles attached to the inner wall of the cylinder barrel, the fine particles are prevented from remaining on the inner wall of the cylinder barrel, then the influence of the fine particles on the piston and the cylinder barrel is reduced, the sealing performance of the plunger type cylinder in the working environment with particle media is improved, energy loss is reduced, and the service life of the plunger type cylinder is prolonged.

A chemical product production method according to the present disclosure involves: introducing an inert gas into a reactor accommodating a granular medium that contains a fluid material A and an additive B having a pore volume of 0.01 cm3 / g to 10 cm3 / g, inclusive, to cause the granular medium to flow; heating the reactor; and supplying a starting material that contains a plastic to the heated reactor.

Devices and methods associated therewith for facilitating movement, removal and / or installation of components from treatment units (e.g., water treatment units and wastewater treatment units). The treatment unit can take the form of a granular media filter (e.g., upflow filter, downflow filter or bi-flow filter) or a sludge collection basin. One preferred device is one or more floats facilitating safe removal of components of a treatment unit. The float(s) can be operably associated with an air scour system of a water filter to remove the air scour system from a granular media filter bed. The float(s) can be operably associated with a collection grid of a sludge collection container facilitating safe removal of the collection grid from the sludge collection container. Another preferred device is a flexible piping / conduit operably connected to a pressurized air source and an air scour system to assist in removal / installation of the air scour system.

This invention provides a tip-extending biomimetic tunneling soft robot for particulate media, comprising a tip-extending portion, a drive portion, and an extension length measurement unit. The internal soft cavity of the tip-extending portion is housed within a transparent external cavity in a flip-out manner. The drive portion is connected to the air intake chamber of the external base portion via a flexible hose, supplying high-pressure gas to the air intake chamber to drive the closed end of the internal soft cavity to flip and extend outward from one end of the transparent external cavity. The extension length measurement unit includes a flexible traction member and a rotating roller. One end of the flexible traction member is connected to the tip of the internal soft cavity, and the other end of the flexible traction member is wound around the rotating roller. When the tip of the internal soft cavity flips and extends outward, it drives the flexible traction member to move together. The tunneling depth is determined by measuring the length pulled out of the flexible traction member from the rotating roller. This invention's soft robot is capable of tip-extending tunneling and can accurately measure the extension length.

The present application relates generally to methods and systems for delivering amendments like sulfate to a subsurface below a ground surface. In one embodiment a process comprises advancing a borehole from the ground surface to the subsurface below the ground surface wherein the borehole is advanced above a water table. The borehole is at least partially filled with a mixture comprising gypsum and a granular media. The borehole is then irrigated with water to at least partially dissolve the gypsum and to spread the dissolved gypsum to a desired treatment zone below the ground surface. The irrigating may comprise employing a gravity fed trickle flow using an irrigation line while the desired treatment zone may comprise one or more hydrocarbons.

The field of chromatography, specifically the field of expanded bed chromatography. The invention is an expanded bed chromatography apparatus 1 which has an elongate tube 4 defining an operating volume 8 and having a central axis 7. The top end of the tube is sealed with a cap 2 having an exit port 3. The other end of the tube 4 is connected to a base 5. The base includes a process fluid inlet having a plurality of outlet apertures 10a, 10b, 10c in fluid communication with the operating volume of the tube and an inlet aperture 11 in fluid communication with the plurality of outlet apertures. Each of the plurality of outlet apertures is spaced radially from the central axis of the tube. In use, a mobile phase of process fluid passes up through a particulate media in the tube from the inlet to the exit port in a cap at the top of the apparatus. Target product is adsorbed onto the particulate media and is subsequently eluted from it. Alternatively, impurities are adsorbed on the particulate media and the target solution passes through the expanded bed for collection.

This invention proposes a straightening process and apparatus for large-sized, thick-walled, heat-resistant, thick-walled magnesium alloy cylindrical parts, comprising the following steps: placing the thick-walled magnesium alloy cylindrical part into a straightening mold and fixing it; then filling the inner cavity of the magnesium alloy cylindrical part with solid particulate media, graphite or BN, and compacting it using a press; transferring it to a mold and then to a heating fixture for heating and heat preservation; after reaching a preset temperature and time, turning on an ultrasonic generator, then applying pressure and maintaining it; after maintaining the pressure for a certain time, turning off the ultrasonic generator and releasing the pressure; transferring the straightening mold to a platform, cooling it, removing the solid particulate media, and taking out the cylindrical part. The solid particulate media precision straightening method for thick-walled magnesium alloy cylindrical parts provided by this invention solves the technical problem of straightening large-sized, thick-walled magnesium alloy cylindrical parts by using solid particulate media as the force transmission medium, and achieves precision straightening of thick-walled magnesium alloy cylindrical parts.

An enhanced activated sludge system for removing PFAS from a flow of wastewater and / or landfill leachate includes at least one bioreactor configured to receive a flow of wastewater and / or landfill leachate and configured to promote growth of biological flocs. The at least one bioreactor mixes the biological flocs with a particulate media to form biological flocs enmeshed with the particulate media which adsorb and remove a majority of the PFAS from the flow of wastewater and / or landfill leachate and outputs a flow of biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto and treated wastewater and / or landfill leachate having a majority of the PFAS removed. A separation subsystem separates the biological flocs enmeshed with the particulate media having the majority of PFAS adsorbed thereto from the treated wastewater and / or landfill leachate and outputs a flow of treated wastewater and / or landfill leachate having a majority of the PFAS removed.

This utility model discloses a discharge valve with protective and guiding functions to prevent crystallization and erosion, relating to the field of valve technology. The discharge valve includes a valve seat, a valve body, a valve stem, a guide anti-erosion sleeve, and a guide base. This discharge valve, by adding a guide anti-erosion sleeve and a guide base inside a traditional discharge valve, guides the valve stem, improving the stability of valve lifting and lowering, reducing valve stem swaying and deviation during movement, and lowering the risk of valve seal failure due to unstable valve stem movement. Simultaneously, it reduces the contact area between the valve stem and the medium, preventing medium particles from adhering to the valve stem surface and preventing particulate medium from being carried into the stuffing box, improving the reliability of the valve seal, reducing packing wear and leakage problems caused by medium particles entering the stuffing box, and extending the service life of the packing.

An abrasive blasting device includes a canister which defines a chamber therein. An abrasive particulate media and a pressurized gas are contained in the chamber of the canister and are unseparated from each other. The dispensing mechanism is mounted in the top wall of the canister and is configured to selectively release the abrasive particulate media via a pressure differential between the chamber and an exterior atmosphere outside of the canister.

This invention relates to a multi-media controlled oil dehydration device, comprising a shell with a feed inlet, a water outlet, and an oil outlet. The dehydration device includes a feed distributor, a particulate media assembly, and a fiber media assembly, sequentially installed in the lower, middle, and upper parts of the shell. The feed distributor is connected to the feed inlet pipeline. The lower part of the particulate media assembly has a support, and the upper part has an intercepting net. The lower part of the fiber media assembly has a support, and the intercepting net is installed below the support. The particulate media assembly communicates with the fiber media assembly through the intercepting net. This invention, by combining the particulate media assembly and the fiber media assembly, effectively removes water and impurities carried in the oil, optimizes the oil-water separation process, improves the dehydration effect, and achieves an emulsion water separation efficiency greater than 80%.

The utility model relates to a rotary joint suitable for high-viscosity and particle-containing media, which relates to the field of mechanical sealing and comprises a connecting pipe, and a connecting structure connected with an external pipe fitting is arranged at the position, close to the inlet end, of the connecting pipe. A bearing seat, a first moving ring seat, a static ring seat, a second moving ring seat and a shell are sequentially and detachably mounted on the outer side wall of the connecting pipe in the flow direction of a medium; an atmosphere moving ring and an atmosphere static ring are sequentially installed between the first moving ring seat and the static ring seat in a sealed mode in the flow direction of a medium, and a medium static ring and a medium moving ring are sequentially installed between the static ring seat and the second moving ring seat in a sealed mode in the flow direction of the medium. A blocking and sealing liquid cavity is formed among the static ring base, the atmosphere moving ring, the atmosphere static ring, the medium static ring, the medium moving ring and the outer side wall of the connecting pipe, blocking and sealing liquid circulates in the blocking and sealing liquid cavity, and liquid films are formed between the sealing faces of the atmosphere moving ring and the atmosphere static ring and between the sealing faces of the medium moving ring and the medium static ring. The service life of the rotary joint can be prolonged.