30 results about "Perforation plate" patented technology

The invention provides a flow guide ring structure, a fan assembly, an air conditioner and a noise reduction control method thereof.The flow guide ring structure comprises a flow guide ring, a noise reduction unit is arranged on the periphery of the flow guide ring, the noise reduction unit comprises a first sound absorption assembly, and the first sound absorption assembly comprises a first shell cover, a first partition plate and a first movable plate; the first shell cover covers the peripheral face of the flow guide ring to form a first cavity, the first cavity is divided by the first partition plate into a first sound absorption cavity and a second sound absorption cavity, the first sound absorption cavity and the second sound absorption cavity are different in size, and a plurality of first communicating holes are formed in a first perforated plate section of the first partition plate in a penetrating mode. The first movable plate is movably arranged on the first perforated plate section so as to adjust the number of the shielded first communicating holes. According to the flow guide ring structure, self-adaptive adjustment and noise reduction can be carried out according to the change of the operating parameters, so that noise of different frequencies generated under different operating parameters is effectively reduced, the frequency range of effective noise reduction is widened, the noise reduction effect is improved, and the mute experience comfort of a user is improved.

Methods and systems for uniformly cooling a dome within a plasma treatment system are disclosed. The methods and systems utilize a diffuser including a perforated plate and a cone. The perforated plate includes a center portion and multiple arrays of holes with each array being located circumferentially at a different distance from the center. The cone extends away from the center. The diffuser spreads cooling gas more uniformly across the surface of the dome.

The utility model provides a kind of positioning and guiding type butt joint perforated collection pipe, it is related to perforated collection pipe technical field, including collection pipe body, and the inside wall of collection pipe body is perforated and is equipped with placing opening, and collection pipe body inside is equipped with storage groove, and the through hole is perforated between storage groove and placing opening, and the inside wall of storage groove is perforated and is equipped with threaded hole.The utility model in the process other tasks, staff rotates handle, handle drives threaded rod rotation, threaded rod moves along threaded hole, so that storage plate drives connecting plate to leave connecting groove, staff can extract perforated plate from placing opening at this time, replace the perforated plate with other diameter through hole, insert perforated plate into placing opening, when connecting groove moves to connecting plate side, staff reversely rotates handle, storage plate moves along storage groove, connecting plate enters connecting groove, so it can be fixed, improve replacement efficiency, reduce cost.

Apparatus for location within a sewage conduit of a building comprises an open-topped chamber which includes entry and discharge openings and a removable cover for access to the contents of the chamber. The discharge opening is partially covered with a perforated plate to prevent the discharge from the chamber of relatively untreatable matter, this being subsequently removed through the access cover.

1. The name of the design product: perforated plate (Y02). 2. The use of the design product: for indoor walls, play a role in environmental protection, moisture-proof, fireproof and sound-absorbing. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective drawing.

The invention relates to the technical field of fan noise reduction, in particular to an adjustable fan acoustic liner and a noise reduction method and system.The adjustable fan acoustic liner comprises a perforated plate, a honeycomb cavity layer, a cavity layer filling block and a supporting layer; the cavity layer filling blocks are arranged on the supporting layer in an array mode, the honeycomb-shaped cavity layer is arranged on the outer sides of the cavity layer filling blocks in a sleeving mode, and the perforated plate covers the honeycomb-shaped cavity layer; the cavity layer filling blocks are arranged in an array mode to form a plurality of cavity adjusting areas, and the cavity adjusting areas are arranged in the circumferential direction of the supporting layer at intervals. The cavity layer filling blocks are arranged in an array mode, the multiple cavity adjusting areas are obtained, the noise reduction requirements of noise of different frequencies can be met by changing the heights of the cavity layer filling blocks, the noise reduction frequency can be widened by arranging the multiple cavity layer filling blocks of different heights in the cavity adjusting areas, multi-section coverage from low frequency to high frequency is achieved, and the noise reduction effect is improved. The sound absorption coefficient in a target frequency band can reach 0.9 or above, and the noise reduction requirement is met.

The invention relates to a rainfall system comprising: - a reservoir (4) having four lateral walls, - a perforated plate arranged under the reservoir, the perforated plate having regularly spaced perforations, - a receptacle (8) arranged below the perforated plate; characterized in that it comprises two butterfly flaps (40, 42) carried by two opposite lateral walls of the receptacle, each butterfly flap being pivotally mounted about an axis relative to the receptacle between a position in which the perforations are closed and a position in which the perforations are open; in the closed position, the two butterfly flaps are arranged in the same horizontal plane and close the perforations of the perforated plate; in the open position, each butterfly flap extends along a lateral wall of the receptacle. Figure to be published with the abbreviation: Figure 3

A foldable test bench comprises a perforated plate or template (2) having a plurality of seats (3) for the positioning of respective probes (4), a supporting structure (5) for the stable positioning of said template (2) on a work surface (P) in at least one raised position with respect thereto, wherein the supporting structure (5) comprises a first articulated arm (10) suitable to connect it to said template (2) and allowing the adjustment of the position of said template (2) with respect to the work surface (P) as well as its positioning in a closed non-operative position.

An apparatus (1) for producing a fluidized bed (2) containing a suspension of high and low density particles formed within a vessel (5) of a particle separator (3) is provided. The apparatus 1 has a plurality of rakes (10), each of which is rotatably mounted within a container (5). Each rake (10) has one or more radially extending rake arms (20). Each rake arm (20) has a blade assembly (30) extending therefrom for cutting suspension in the fluidized bed (2). The blade assembly (30) may include a plurality of interconnected frame members (35) or one or more spaced apart blades (48) extending into the fluidized bed, wherein each blade includes a rod, a rod, a planar element, a paddle, a perforated plate, or a plate-like structure.

The invention relates to a device (10) for shrinking a film (F) onto at least one article (A). The device (10) has a conveying device (12) for conveying the at least one article (A) and the film (F). The device (10) further has a fluid supply device (14, 16) for supplying a fluid to the at least one article (A) for shrinking the film (F) onto the at least one article (A). The fluid supply device (14, 16) has a perforated plate (18, 20) with rows (22) of outlet holes for releasing the fluid towards the at least one article (A). The fluid supply device (14, 16) further comprises an adjusting element (28) with at least one row of holes (30) which lies over at least one of the rows of holes (22) of the perforated plate (18, 20) and is movable to selectively release or cover this at least one row of holes (22) of the perforated plate (18, 20).

The utility model relates to the technical field of silk heating technology discloses a silk heating equipment for elasticizer, including heating box, both sides of heating box all are established through groove, and the inside fixed connection of through groove has the perforated plate, the inside of heating box is provided with heating assembly, heating assembly includes heating roller no.

The utility model relates to building curtain wall technical field, concretely relates to a sunshade type breath formula curtain wall structure, and the sunshade type breath formula curtain wall structure is by several curtain wall units, and is equipped with ventilation structure between upper and lower layer curtain wall units, and the curtain wall unit includes inner layer curtain wall and outer layer curtain wall, and the inner layer curtain wall includes inner layer glass, inner layer vertical keel, inner layer cross keel and inner layer opening window, and the outer layer curtain wall includes outer layer glass and outer layer interlayer decorative plate, and the ventilation structure includes perforated ventilation board, insect screen, horse path and perforated plate. The utility model discloses a sunshade type breath formula curtain wall structure, greatly improves the thermal performance and sound insulation performance of curtain wall whole through setting double breath formula curtain wall.

The invention provides an acoustic liner, a power propulsion system and a design method thereof. The acoustic liner comprises a perforated plate, a cavity structure and a back plate. The perforated plate is provided with through holes; the cavity structure comprises a plurality of pipelines; the perforated plate and the back plate are connected with the two opposite sides of the cavity structure correspondingly, and therefore the perforated plate, the cavity structure and the back plate jointly define a plurality of cavities with the tops open and the bottoms closed. Wherein the perforated plate comprises a plate body and a plurality of thickening parts, the thickening parts correspondingly extend into the multiple pipelines from the plate body in the thickness direction, and the thickening parts are attached to the pipelines, so that the depth of the cavity is limited by the thickening parts and the back plate; moreover, the portion of the perforated plate, the portion of the pipeline and the portion of the back plate which jointly define the single cavity provide a single sound absorption structure unit, and the thicknesses of the thickening portions of at least two sound absorption structure units are different.

The invention relates to a device for providing disposable laboratory articles, comprising • a rectangular perforated plate having a plurality of holes for receiving disposable laboratory articles, • a box, comprising o a bottom wall, o first side walls which extend upward from the bottom wall and the upper edges of which delimit a first opening for the insertion of the perforated plate, and o at least one support structure within the box for the purpose of holding the perforated plate at a distance from the bottom wall, and • a cover, comprising o a top wall, and o second side walls which extend downward from the top wall and the lower edges of which delimit a second opening, • wherein o the perforated plate and the box are connected via a first hinge about which the perforated plate can, from a position laterally next to the box, be folded against the support structure, o the lid and the box are connected via a second hinge about which the lid can, from a position laterally next to the box, be folded into a position covering the box, and o the perforated plate, the box, the lid and the hinges are a component produced as one piece.

1. Name of the product in this design: Perforated plate (Y03). 2. Purpose of this design: For use on interior walls, serving as an environmentally friendly, moisture-proof, fire-resistant, and sound-absorbing surface. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The invention relates to a discontinuously operated desublimator (1) for removing at least one gas component to be desublimated from a gas mixture stream, the desublimator comprises a housing wall (7), an inlet (2) in the housing wall (7) for supplying the gas mixture stream to the desublimator (1), an outlet (6) in the housing wall (7) for removing the treated gas mixture stream from the desublimator (1), a desublimation zone (4) having a temperature controllable flow channel wall, a gas inlet distributor space (3) between the inlet (2) and the desublimation zone (4) and a gas outlet space (5) between the outlet (6) and the desublimation zone (4), in which the temperature of the flow channel walls is controllable such that the at least one gas component to be desublimated desublimates at the flow channel walls during the loading process, and such that, during a subsequent melting process, the at least one gas component desublimated during the loading process melts at the flow channel walls. According to the invention, at least a first perforated plate (8) is arranged in the gas inlet distributor space (3) for uniformly distributing the gas mixture flow through flow channels created by flow channel walls of the desublimation zone (4), the distance (AT) of the geometric centre of gravity of said plate from the desublimation zone (4) is in the range of 0 to Amax, preferably in the range of 0 to 0.5 Amax, and more preferably in the range of 0.03 to 0.3 Amax, where Amax corresponds to the distance between the inlet face (9) of the inlet (2) and the desublimation zone (4), and where the porosity of the at least first perforated plate is in the range of 5% to 50%, preferably 10% to 30%, more preferably 10% to 20%. The invention further provides a method of operating a desublimator (1) of the invention.

The objective of this invention is to reduce the burden of sieving light-density materials discharged from a density-differential sorting machine. [Solution] The sieving and recovery set according to the present invention comprises a sieving member 100 and a recovery member 200. The sieving member is attached to the discharge port EX of the low specific gravity material in the specific gravity difference sorting machine SGD. The recovery member is positioned below the sieving member to receive the low specific gravity material discharged from the discharge port. The sieving member has a perforated plate 120 and a mounting portion 110. The perforated plate is inclined downward as it approaches the recovery member. The mounting portion attaches the perforated plate to the aforementioned discharge port. The recovery member has a first recovery container CNu, a second recovery container CNl, and a non-perforated plate 220. The first recovery container is positioned below the lower end of the perforated plate. The second recovery container is positioned below the first recovery container. The non-perforated plate is inclined downward from a position below the upper end of the perforated plate towards the second recovery container and extends to the second recovery container.

1. Name of the product in this design: Perforated plate (Y01). 2. Purpose of this design: For use on interior walls, serving as an environmentally friendly, moisture-proof, fire-resistant, and sound-absorbing surface. 3. The key design feature of this product is its shape. 4. The image or photograph that best illustrates the design's key points: a 3D model.

The utility model discloses a corrosion-resistant building curtain wall perforated plate, which relates to the technical field of building curtain walls and comprises a building curtain wall perforated plate mechanism, a fixing mechanism is arranged on one side of the building curtain wall perforated plate mechanism, and the building curtain wall perforated plate mechanism comprises a plate. The bottom layer coating, the middle layer coating and the surface layer coating are arranged on the surface of the plate, the bottom layer coating adopts epoxy zinc-rich primer, the content of zinc powder is high, cathode protection can be provided for a base body, under the condition that the plate is scratched and other local damage conditions, the zinc powder is corroded preferentially, rusting of the base layer is delayed, the middle layer coating is the polyurethane coating, and the surface layer coating is not prone to corrosion. The coating has good flexibility and filling property, can fill up fine defects on the surface of the plate, and has good adhesive force with the bottom coating and the surface coating, the surface coating adopts the fluorocarbon coating, and fluorocarbon resin has low surface energy and high weather resistance, can effectively resist erosion of ultraviolet rays, acid rain, salt mist and the like, is more corrosion-resistant, and prevents the surface of the perforated plate from rusting.

The purpose of the present invention is to propose a granular material drying device with which uniform drying is possible, in which adhesion to a perforated plate, which is a turning mechanism, does not readily occur, and for which a compact device design is possible. This granular material drying device comprises a cylindrical container, a granular material and heated gas introduction pipe, a perforated plate that forms a swirling updraft inside the cylindrical container, and a granular material and heated gas discharge pipe. The granular material drying device is provided with a granular material circulation path 15 in which one opening end 15a opens at a portion below the portion of connection of the granular material and heated gas discharge pipe and along an inner peripheral wall surface of the cylindrical container, and the other opening end 15b opens near the center of the perforated plate that forms the swirling updraft inside the cylindrical container.

Provided are a driver unit of a headphone, in which, in a case where a driver unit including a piezoelectric film having a formed curved portion is applied to the headphone, deformation of the curved portion of the piezoelectric film in a case of wearing the headphone can be suppressed, and deterioration in sound quality can be suppressed; and a headphone. The driver unit includes a piezoelectric film which has a piezoelectric layer consisting of a polymer-based piezoelectric composite material containing piezoelectric particles in a matrix containing a polymer material and electrode layers provided on both surfaces of the piezoelectric layer, and a perforated plate having at least one through-hole, in which the piezoelectric film has a curved portion which is formed to protrude to one main surface side and to be recessed to the other main surface side, the perforated plate is laminated on a concave surface side of the curved portion of the piezoelectric film, and in the through-hole, a first air chamber defined by the concave surface of the piezoelectric film and the perforated plate communicates with an outside.

A CO2 separation chamber (14), in particular a sorption chamber (14) and / or desorption chamber (18), is proposed for a CO2 separation device for separating CO2 from a supplied gas stream (12), in particular an air stream (12) from an environment, wherein two opposing wall sections (28, 32) of a chamber housing (26) each have a grid (36), in particular an expanded metal grid (36), and / or a perforated plate, in particular a perforated perforated plate, for housing stabilization and a film (38) and / or a cloth arranged on this / this for housing sealing or consist thereof.

The application provides an acoustic liner, a power propulsion system and a design method thereof. The acoustic liner comprises a perforated panel, a cavity structure and a back plate. The perforated panel is provided with through holes; the cavity structure comprises a plurality of pipes; the perforated panel and the back plate are respectively connected to opposite sides of the cavity structure, so that the perforated panel, the cavity structure and the back plate jointly enclose a plurality of cavities which are open at the top and closed at the bottom; the perforated panel comprises a panel body and a plurality of thickening portions, the thickening portions correspondingly extend to the interiors of the plurality of pipes from the panel body along the thickness direction, and the thickening portions are attached to the pipes, so that the depth of the cavity is defined by the thickening portions and the back plate; and the part of the perforated panel, the pipe and the part of the back plate which jointly enclose a single cavity provide a single sound absorption structure unit, and the thicknesses of the thickening portions of at least two sound absorption structure units are different.

The invention relates to a rainfall system comprising: - a reservoir (4) having four lateral walls, - a perforated plate arranged under the reservoir, the perforated plate having regularly spaced perforations, - a receptacle (8) arranged below the perforated plate; characterized in that it comprises two butterfly flaps (40, 42) carried by two opposite lateral walls of the receptacle, each butterfly flap being pivotally mounted about an axis relative to the receptacle between a position in which the perforations are closed and a position in which the perforations are open; in the closed position, the two butterfly flaps are arranged in the same horizontal plane and close the perforations of the perforated plate; in the open position, each butterfly flap extends along a lateral wall of the receptacle. Figure to be published with the abbreviation: Figure 3

The utility model relates to the technical field of silencers, in particular to an air inlet silencer, which realizes light and thin installation and use on the basis of solving the problems of large noise and large wind resistance at an air inlet of an equipment cabinet body in the prior art. The two sides of the silencer frame are open, an air inlet is formed in one side of the silencer frame, and an air outlet is formed in the other side of the silencer frame; the silencing sheets are arranged in the silencer frame at intervals, and cavities are formed between the silencing sheets and the silencer frame and between the silencing sheets; each silencing sheet comprises a silencing sheet perforated plate and a porous sound absorption material filled between the silencing sheet perforated plates; and the frame perforated plate is arranged on the inner side of the silencer frame, and the space between the silencer frame and the frame perforated plate is also filled with the porous sound absorption material. Sound absorption performance is excellent, and installation and maintenance are convenient.

The present disclosure relates to density measurements, particularly, to system (101) and method for estimating minimum density of material (103) using aeration process The system (101) comprises cylindrical mould (105), in which upper end 10 (203) of cylindrical mould (105) is configured to receive material (103). Furthermore, system (101) comprises tubular structures (109), in which upper end of tubular structures (109) are coupled to conduits (405) in base perforation plate (107). Furthermore, system (101) comprises compressor (113) coupled to manifold (111), configured to supply air pressure to the material (103) in cylindrical mould 15 (105), via tubular structures (109) and perform aeration process, by separating finer particles of material (103) from coarse matrix of material (103) in cylindrical mould (105). Furthermore, system (101) comprises digital vernier caliper system (115) configured to measure height of material (103) occupied inside cylindrical mould (105), and estimate minimum density of material (103).

This utility model provides an integrated noise reduction and dust removal device for a pole rebar cage processing workshop, including a composite sound insulation panel and a dust collection box. The composite sound insulation panel consists of four vertically arranged panels with a movable structure at the bottom for easy movement. These four panels are placed around a rebar cage welding machine to form a soundproof wall, enclosing the machine in the center. A soundproof roof plate, also composed of composite sound insulation panels, covers the top of the soundproof wall. The dust collection box is connected to one of the composite sound insulation panels via a connecting pipe and is also connected to an air pump. The composite sound insulation panel is composed of a perforated plate layer, a sound-absorbing cotton layer, and a sound-insulating steel plate layer bonded together sequentially. This utility model can isolate and absorb most of the noise generated during rebar cage processing, thereby reducing noise pollution in the workshop. Simultaneously, dust is filtered into the dust collection box by the dust collection cloth, reducing the harm to workers' health caused by dust floating in the workshop.

The utility model discloses a fixing structure for a perforated plate, which comprises a frame structure, the frame structure is used for wrapping the perforated plate, the frame structure is composed of a U-shaped frame and a top cover plate, the perforated plate is inserted into the U-shaped frame, and the top end of the perforated plate is inserted into the top cover plate; the perforated plate comprises a frame structure and a U-shaped frame, the frame structure is mounted on a bearing object through the mounting structure so as to achieve rapid replacement of the frame structure, a U-shaped groove is formed in the U-shaped frame, and an insertion groove is formed in the bottom end of the top cover plate, and the perforated plate is mounted through the frame structure composed of the top cover plate and the U-shaped frame. Therefore, the perforated plate and the frame structure are more convenient to disassemble and assemble; by arranging the mounting structure, the frame structure is more convenient to mount, the frame structure is more convenient to dismount, and the frame structure and the perforated plate are more convenient to replace.

The application discloses a special-shaped polyhedral rotatable outer wall decoration structure and a use method thereof, which comprises a polygonal structure surrounded by at least three perforated plates and a polyhedral decoration piece, a top plate installed at the top of the polygonal structure, a bottom plate installed at the bottom of the polygonal structure, a rotating shaft vertically installed between the top plate and the bottom plate and located at the center of the polygonal structure, and two bearing seats connected with the top and bottom of the rotating shaft respectively. The polygonal structure is light in weight, small in wind resistance, rotatable around the rotating shaft, and can bring variable visual effects in cooperation with the perforated plates. When the rotating shaft rotates, the counterweight can pull the upper and lower colored ribbons to periodically fluctuate, thereby bringing more variable visual effects.