49 results about "Particulate media" patented technology

The invention belongs to the technical field of part processing, and provides a multi-harmonic excitation conformal polishing and grinding device and method for ring parts, the device adopts a double-mass double-excitation four-machine reverse split driving mechanical vibration system, high-frequency large-amplitude compound vibration of a conformal container is realized, and the polishing and grinding efficiency is improved. Therefore, the particle medium is driven to perform efficient longitudinal spiral motion around the ring part; the rotary motion of the ring part cooperates with the geometric constraint of the conformal container, so that the relative motion between the particle medium and the ring part is improved, an alternating stress flow field is formed in the ring part, and the problem that the inner surface machining efficiency and the outer surface machining efficiency are inconsistent due to the splitting effect of the ring part on the particle flow field is successfully solved. By means of the method, the problems of low machining efficiency, uneven machining and poor surface quality existing in a traditional finishing machining method for the ring parts with the cartridge receiver and the flame tube as typical parts can be solved, and the machining cost is reduced while the machining precision and the surface quality of the ring parts are improved.

There is a scent delivery device and method of manufacture thereof wherein a scent delivering granular media is disposed within an airtight or textile container. The granular media includes: free-flowing non-silica, non-garnet, and non-staurolite glacial remnant sand mixed in a drum with powdered orris root fixative physically bonded to the free-flowing non-silica non-garnet, and non-staurolite glacial remnant sand and a fragrance fixed to the orris root fixative. The airtight container is a clear glass jar with a lidded top in functional communication with a heating lamp such that heat from the lamp is directed to the container and thereby to the scent delivering granular media.

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.

The invention relates to the technical field of magnetic pumps, in particular to a magnetic pump capable of conveying a particle-containing medium, which comprises a pump body, an impeller, a magnetic power mechanism and a medium separation mechanism, the medium separation mechanism is provided with a first medium inlet, a second medium inlet, a first medium outlet and a second medium outlet, the medium separation mechanism is used for separating a first particle-containing medium at the first medium inlet into a second particle-containing medium and a particle-free medium, and the magnetic power mechanism is provided with a medium channel communicating with the second medium outlet and the pump cavity; the particle-containing medium is separated to form a particle-free medium, then the particle-free medium enters the magnetic power mechanism, the medium flowing effect of the magnetic power mechanism towards the direction of the pump cavity is achieved, particles in the medium in the pump cavity are prevented from entering the magnetic power mechanism, and meanwhile the particle-free medium is separated according to the characteristics of the particle-free medium. And the magnetic power mechanism can be additionally cooled, lubricated and the like.

Provided is a method for industrially advantageously producing an organic acid salt from which a perovskite-type composite oxide having a small particle diameter and a high crystallinity can be obtained, the method comprising mixing and reacting a solution (solution A) containing any one component of an organic acid, an A-site element compound, and a B-site element compound with a solution (solution B) containing two components of the organic acid, the A-site element compound, and the B-site element compound to produce an organic acid salt, wherein the two components are not contained in the solution A. The method for producing the organic acid salt is characterized by firstly feeding, into a reaction vessel, either one of the solution A and the solution B and a granular medium in an amount of 5.0-95.0 vol% relative to the volume of the one solution, and then stirring the solution and the granular medium in the reaction vessel and therewhile mixing and reacting the solution in the reaction vessel with the other of the solution A and the solution B.

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.

The present invention provides a short-process particulate medium forming method and device for a dissimilar alloy multi-layer honeycomb composite plate. The specific steps are as follows: surface pretreatment of the alloy plate; laying out the alloy plates; performing metallurgical bonding on the pre-prepared dissimilar alloy composite plate by diffusion bonding: placing the dissimilar alloy composite plate in a resistance furnace and heating the resistance furnace to the preset temperature for diffusion bonding in an equal-gradient manner; pressing the left punch and the right punch into the first cavity and the second cavity respectively, and controlling the current frequency by changing the press to perform pulsed pressure on the pressing plate, the die, the punch in the forming device and the contact area with the surface of the dissimilar alloy composite plate; performing heat preservation and pressure holding treatment on the dissimilar alloy composite plate; forming the dissimilar alloy composite plate with solid particles; cooling in a gradient manner and unloading to obtain the dissimilar alloy multi-layer honeycomb composite plate. The present invention integrates the forming preparation and the diffusion bonding of adjacent metal layers. The metallurgical bonding effect of the diffusion bonding is uniform and the forming efficiency is relatively high.

The utility model discloses a shield pump for conveying granular media, which comprises a connecting seat, the front end of the connecting seat is connected with a pump shell through a flange, the rear end of the connecting seat is fixedly connected with a machine shell, a shaft sleeve is rotatably arranged in the middle of the connecting seat in a penetrating manner, and one end, facing the pump shell, of the shaft sleeve is fixedly connected with a baffle ring. The baffle ring is located in the pump shell, a plurality of arc-shaped grooves are formed in the end face, facing the shaft sleeve, of the baffle ring, a rotating shaft fixedly penetrates through the shaft sleeve and the baffle ring jointly, and the end, located in the pump shell, of the rotating shaft is fixedly connected with an impeller. In the process of conveying granular media, the rotor can drive the baffle ring to rotate in the pump shell, so that fine particles entering the gap between the baffle ring and the connecting seat can be thrown out of the baffle ring under the action of the arc-shaped groove, and the fine granular media entering the shielding cover from the fit gap between the shaft sleeve and the connecting seat are reduced; therefore, the probability that the shaft sleeve is stuck and the shielding sleeve is damaged is reduced, and the use effect is good.

The present invention relates to a low-noise three-screw waste oil pump with a mortise and tenon joint structure. A driving screw and two driven screws are housed within a screw bushing. The screw bushing covers the spiral sections of the driving screw and the two driven screws, forming a spiral sealing chamber. The axial length of the screw bushing is greater than the spiral meshing portion formed by the driving screw and the driven screws, forming a screw bushing inlet cavity and a screw bushing inlet cavity. When liquid enters and exits the spiral sealing chamber, a buffer zone is formed with the pump inlet and outlet cavities, thereby reducing vibration and noise. The driving screw and the driven screw adopt a split structure and a mortise and tenon joint. The spiral sections and the axial force balancing portion are made of different materials, achieving low cost and high wear resistance. The present invention is very suitable for use in environments with limited space, low-noise transportation of gaseous and particulate media, rapid maintenance and replacement, and high requirements for overall size and weight. It has very important market economic value.

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 invention provides a forming and forming method and mold for a solid particle integrated fiber-reinforced metal laminate, and relates to the technical field of composite board processing, and the forming and forming method comprises the following steps: paving a pretreated metal board and a fiber-reinforced prepreg to obtain a fiber-reinforced metal laminate sample in a semi-cured state; the sample is positioned and installed in the forming female die, and the center of the sample coincides with the axis of the punch in the forming process; the edge pressing charging barrel and the forming female die are connected through a disc spring, the edge pressing charging barrel is filled with quantitative solid particle media, and a guide ring and a forming punch are assembled; the mold is heated to a prepreg forming temperature interval, and the punch compacts the medium to achieve plastic forming; and synchronously raising the temperature to a curing temperature to complete curing of the prepreg. Forming and curing processes are integrated in a single mold, the problems of interface pollution and thermal stress accumulation of traditional step-by-step manufacturing are solved by utilizing the flexible pressure transfer characteristic of granular media, and high-precision forming and interface combination strengthening machining of complex curved surface components are achieved.

The invention belongs to the technical field of barreling finishing machining of blisk parts, and aims to solve the problems that air inlet and exhaust edges of blisk parts are over-polished, blade roots are under-polished, and machining is not uniform. The invention provides a particle medium flow field regulation and control method for blisk spiral vibration composite polishing and grinding. A multi-target evaluation model of a blisk wear depth average value and a variable coefficient is constructed based on an entropy weight method and a subjective assignment method; optimal process parameters are selected through orthogonal simulation of container size parameters and motion parameters; a container wall configuration optimization method is provided for non-uniformity of the area from the blade root to the blade tip, and optimization design is conducted on container wall configuration through a response curved surface, a neural network, a genetic algorithm and the like; in order to solve the problem of excessive polishing of air inlet and exhaust edges, a blade expansion configuration regulation and control method is provided, and the machining uniformity and consistency of the blisk are comprehensively achieved. According to the invention, high surface integrity and uniform consistency polishing and grinding of the blisk are realized.

The invention relates to a method for filtering water by means of a filter (10, 10'') comprising at least one granular medium forming a layer of granular media (14), which is submerged and placed in a tank (18), the filtering method comprising: - at least two steps of cleaning (2) the filter, the filtering method being characterised in that it comprises at least one step of unclogging (4) the granular media, comprising the following steps: - stopping the filtering of the water; - at least once, placing the grains forming the granular media in suspension by means of at least one injection of at least one unclogging fluid into the layer of granular media (14); - returning the granular media to the state in which it forms a layer of granular media (14) of the suspended material previously retained in the layer of granular media (14); and - resuming the filtering.

The invention discloses a tri-eccentric U-shaped metal butterfly valve suitable for particle media, and relates to the technical field of butterfly valves, the tri-eccentric U-shaped metal butterfly valve comprises a valve body, a driving assembly, an adjusting assembly, a valve assembly and a driving rod, the driving assembly is fixedly connected with the valve body, and the driving assembly comprises a fixing plate and a support. In the process that the butterfly valve is put into use, the motor is started, along with continuous operation of the motor, the first friction ring continuously rotates, so that the second friction ring continuously bears force, that is, the threaded pipe can always keep a tightening state on the bolts on the two sides under the action of friction force, and through the continuous tightening state of the bolts, the safety of the butterfly valve is improved. The two sets of first sealing flanges and second sealing flanges can be always kept in a stable pressing and tightening state, so that the sealing state of the connecting position of the butterfly valve is stable, leakage caused by loosening of the connecting position of the butterfly valve in the using state of high-speed particle medium fluid for a long time is avoided, and the using stability of the butterfly valve is effectively improved.

The present invention provides a device (100) for moving on a particulate medium comprising one or more ramps. The device comprises: a body (104) having a front portion (A) and a rear portion (B) in a longitudinal direction; and one or more rotatable members (102, 102a, 102b), each rotatable member for rotational movement relative to the body (104) about a respective axis of rotation having a component aligned with the longitudinal direction and externally exposed to adjacent portions of a particulate medium on which the device (100) is to be disposed. The one or more rotatable members (102, 102a, 102b) each include one or more helical fins (106) extending outwardly from the axis of rotation such that rotation of the one or more rotatable members (102, 102a, 102b) is configured to move the device (100) on the particulate medium. A first longitudinal distance between a center of mass of the device (100) and the front portion (A) of the body (104) is less than a second longitudinal distance between an expected center of contact between the device (100) and the particulate medium and the front portion (A) of the body (104) when the device (100) is located on a flat portion of the particulate medium.

The invention provides an impeller for a granular medium delivery pump and the granular medium delivery pump. The impeller comprises blades and a cover plate, and a plurality of short back ribs are arranged on the side face of the periphery of the cover plate at intervals in the rotating direction. According to the impeller, the short back ribs are arranged on the cover plate of the impeller, particulate matter entering the cavity between the cover plate and the protective plate can be effectively reduced, the particulate matter is prevented from entering the cavity along with centrifugal force brought by rotation of the impeller, and a flow passage component is effectively protected.

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.

The invention relates to a pectin-based cryogel particle medium and a preparation method thereof. According to the method, pectin is used as a framework material, a pectin matrix is solidified through a low-temperature chemical cross-linking technology, and the porous cryogel particle medium is prepared by combining a freezing casting method and an airflow cutting dripping process. The obtained medium has the following characteristics: (1) the medium has excellent biocompatibility and is suitable for the field of biological medicine; (2) a stable three-dimensional network structure is formed through the synergistic effect of chemical crosslinking and freeze casting, and the mechanical strength is remarkably improved; (3) an internal through type pore channel structure guarantees efficient material transmission; and (4) a non-toxic cross-linking agent and an environment-friendly process are adopted in the whole process. The preparation method disclosed by the invention is simple in process flow, and continuous production can be realized without complicated equipment.

The present invention relates to a method (200) for treating a flow of an aqueous solution, the method comprising: a) activating (205) a particulate medium (20) to be activated, which medium comprises a material having a non-zero electrical conductivity; b) dispensing (210) the thus activated particulate medium (20) into a treatment volume (15); and c) circulating (215) a flow of an aqueous solution to be treated (25) in the treatment volume (15) through the activated particulate medium (20), in order to form a flow of treated aqueous solution (45), which activation takes place using a bipolar electrochemical process, the bipolar electrochemical process comprising the application, using at least two electrodes (95), of an electrical potential difference to an activation compartment (70) containing the particulate medium (20), in the presence of an electrolyte (90), without direct contact between the particulate medium (20) and the electrodes (95).

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.

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.

Method and installation for treating a stream of aqueous solution using a particulate medium activated by bipolar electrochemistry. The present invention relates to a method for treating (200) a stream of aqueous solution, the method comprising: a) the activation (205) of a particulate medium (20) to be activated comprising a material having non-zero electrical conductivity, b) the distribution (210) of the particulate medium (20) thus activated in a treatment volume (15), and c) the circulation (215) of a stream of aqueous solution to be treated (25) in the treatment volume (15) through the activated particulate medium (20), to form a treated aqueous solution stream (45), the activation being carried out by a bipolar electrochemistry process.The bipolar electrochemical process comprises applying an electrical potential difference by means of at least two electrodes (95) to an activation compartment (70) containing the particulate medium (20) in the presence of an electrolyte (90), without direct contact between the particulate medium (20) and the electrodes (95). Figure for the abstract: 1,

The application discloses a method and device for layer-shaped second phase directional distribution and powder homogenization loading, which comprises a feeding structure, a filler device and a stacking barrel; by virtue of the difference between the base powder and the shape and fluidity of the layer-shaped second phase, the layer-shaped second phase particle medium is directionally arranged in the base powder under the action of circulating rotation shearing, and the powder column is obtained by loading through continuous convex layer accumulation, and the density distribution of the filled powder column is uniform; the high performance and quality consistency of the powder metallurgy material are realized through layer-by-layer powder loading and second phase directional arrangement, and the overall density and density uniformity of the compact are improved.

The invention relates to a method for filtering water by means of a filter (10, 10'') comprising at least one granular medium forming a layer of granular media (14), which is submerged and placed in a tank (18), the filtering method comprising: - at least two steps of cleaning (2) the filter, the filtering method being characterised in that it comprises at least one step of unclogging (4) the granular media, comprising the following steps: - stopping the filtering of the water; - at least once, placing the grains forming the granular media in suspension by means of at least one injection of at least one unclogging fluid into the layer of granular media (14); - returning the granular media to the state in which it forms a layer of granular media (14) of the suspended material previously retained in the layer of granular media (14); and - resuming the filtering.

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.

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.