Patent ID: 12208345

Description of reference numerals:1denotes a grid body;2denotes supports;3denotes a cylindrical barrel;4denotes a conical barrel;5denotes a water inlet;6denotes a water distribution area;7denotes a water retaining platform;8denotes an inflow water guide plate;9denotes a first aperture screen plate area;10denotes a second aperture screen plate area;11denotes a central water retaining weir;12denotes scrapers;13denotes a first layer structure;14denotes a second layer structure;15denotes a driving motor;16denotes a support frame;17denotes a residue inlet;18denotes a guide rail;19denotes a squeezing cylinder;20denotes a motor;21denotes a residue outlet;22denotes a conical catchment area;23denotes a water outlet;100denotes a water intake module;200denotes a filtering module;300denotes a residue scraping module;400denotes a residue pressing module; and500denotes a water discharge module.

DETAILED DESCRIPTION

In the description of the present disclosure, it should be understood that the orientations or positional relationships indicated by the directional terms such as “inner, outer”, “upper, lower”, “left, right”, and the like are usually based on the orientations or positional relationships shown in the drawings, which is only for the convenience of describing the present disclosure and simplifying the description. Where the contrary is not stated, these directional terms do not indicate or imply that the device or element referred to must have a particular orientation or be constructed and operated in a particular orientation. Therefore, it should not be construed as limiting the scope of protection of the present disclosure.

In order to make the objectives, technical solutions and advantages of the present disclosure clearer, the present disclosure will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present disclosure, and are not intended to limit the present disclosure.

As shown inFIG.1andFIG.2, a large-flux ultra-fine grid system with non-rotating screen plates includes a grid body1and supports2, and the grid body1includes a water intake module100, a filtering module200, a residue scraping module300, a residue pressing module400, and a water discharge module500.

As shown inFIG.3, the filtering module200is disposed at a middle-upper part of the grid body1, the water intake module100and the residue pressing module400are organically coupled at a lower part of the filtering module200, the water intake module100, the residue pressing module400, the filtering module200and the residue scraping module300are located on a cylindrical barrel3disposed on the grid body1, and the cylindrical barrel3is a cylindrical structure.

The water intake module100includes a water inlet5and a water distribution area6, and the water distribution area6is fan-shaped.

The filtering module200includes a water retaining platform7, an inflow water guide plate8, a first aperture screen plate area9, a second aperture screen plate area10, and a central water retaining weir11located in a center of the filtering module200, where the water retaining platform7is a platform for resisting water flow, the inflow water guide plate8is fan-shaped, the first aperture screen plate area9is an area provided with a plurality of first aperture screen plates, the second aperture screen plate area10is an area provided with a plurality of first aperture screen plates, the first aperture is a large aperture, and the second aperture is a small aperture; and the central water retaining weir11is a platform for resisting water flow, which is disposed in the middle of the grid body1.

The residue scraping module300includes scrapers12, a driving motor15, a support frame16, a residue inlet17, and a guide rail18, where the scrapers12are arc-shaped, and the driving motor15is a variable frequency speed-regulating driving motor; the support frame16is a support frame of the driving motor15for supporting the driving motor15; and the guide rail18is a guide rail disposed obliquely in a sloping manner and serving for the scrapers12.

The residue pressing module400includes a squeezing cylinder19, a motor20, and a residue outlet21, where the squeezing cylinder19is a squeezing cylinder and internally provided with spiral blades, and the motor20is a variable frequency motor used for squeezing. The water distribution area6is fitted to the lower part of the filtering module200, a

right side of the water distribution area6is aligned with a left side of the first aperture screen plate area9, a left side of the water distribution area6is aligned with a right side of the water retaining platform7, a left side of the water retaining platform7is coupled and integrated with the guide rail18, the second aperture screen plate area10is formed between the first aperture screen plate area9and the residue inlet17, and the squeezing cylinder19is connected to the residue inlet17by ways of grid residue baffles on both sides.

The support frame16is disposed on the supports2, the driving motor15is disposed on the support frame16, the scrapers12are driven by the driving motor15to rotate continuously, and the supports2may be made of stainless steel.

The residue outlet21is reserved at an outlet end of the squeezing cylinder19, and the motor20and the residue outlet21are diagonally disposed on both sides of the cylindrical barrel3.

The water discharge module500is disposed at a lower part of the grid body1and located on a conical barrel4disposed on the grid body1, and a water outlet23is reserved in a bottom of the conical barrel4, where the conical barrel4has a conical structure and is connected to the cylindrical barrel3, and the cylindrical barrel3is connected above the conical barrel4.

As an implementation, the driving motor15is disposed at a central position of the support frame16, and the rotating speed of the driving motor15is dynamically adjusted in combination with the amount of grid residue on the surface of the filtering module200and the actual residue scraping effect of the scrapers12.

A left side of the inflow water guide plate8is fixedly connected to an extension plate of the water retaining platform7, the inflow water guide plate8is disposed parallel to the first aperture screen plate area9, and the inflow water guide plate8is disposed at an angle of 5-10°, where the water retaining platform7is fan-shaped, and the inflow water guide plate8is made of a plastic material.

As an implementation, the filtering module200is configured to arranged in a slightly curved surface, and the first aperture screen plate area9and the second aperture screen plate area10are both inclined downwards in the direction of the central water retaining weir11, with an angle of 5-10° to the horizontal plane.

The area of the second aperture screen plate area10is 1-2 times the area of the first aperture screen plate area9, the porosity of the first aperture screen plate area9and the second aperture screen plate area10is 80%-95%, the aperture range of the first aperture screen plate area9is 2-4 mm, and the aperture range of the second aperture screen plate area10is 0.2-2 mm.

As an implementation, both the first aperture screen plate area9and the second aperture screen plate area10are fan-shaped, and have the same radius of 25-75 cm. The specific radius is comprehensively determined based on the inflow water flow rates, screen plate apertures, porosity, and water flux.

The fan-shaped water retaining platform7, the inflow water guide plate8, the first aperture screen plate area9, and the second aperture screen plate area10are disposed inside a barrel body of the cylindrical barrel3in a spliced manner so as to form a slightly curved surface with a central part protruding outwards, the central part is located below the outer circumference, and the outer circumference is seamlessly connected to the inner diameter of the barrel body.

An upper surface of the water retaining platform7is 10-15 cm higher than an upper surface of the second aperture screen plate area10located on the same circumference, and the area of the water retaining platform7accounts for 1/12-⅛ of the area of the filtering module.

The scrapers12are arranged on a rotating shaft of the driving motor15in a manner of fan blade type combination, each of the scrapers includes a first layer structure13and a second layer structure14, where the first layer structure13is located above the second layer structure14, the first layer structure13is a hard stainless steel plate, and the second layer structure14is made of a soft material; the scrapers12are made of a composite material; the height of the first layer structure13is 30-40 cm, and an interstice between a tail end of the first layer structure and an inner wall of the grid body1is 1-2 cm; and the height of the second layer structure14is 15-20 cm, a tail end of the second layer structure is fully fitted to the inner wall of the grid body1, and a bottom of the second layer structure14is fully fitted to the upper surfaces of the first aperture screen plate area9and the second aperture screen plate area10. A piece of elastic rubber or a brush is employed as the second layer structure14.

As an implementation, the scrapers12continuously rotate in a counterclockwise direction, and the rotating direction of the scrapers12is the same as the movement direction of effluent from the water distribution area6on the surfaces of the first aperture screen plate area9and the second aperture screen plate area10.

The squeezing cylinder19passes through a center of the cylindrical barrel3, and the length of a horizontal portion of the squeezing cylinder19is equal to the diameter of the cylindrical barrel3.

The water discharge module500includes a conical catchment area22and the water outlet23, and the water outlet23is reserved in a bottom of the conical catchment area22.

The water intake module100, the filtering module200, the residue scraping module300, the residue pressing module400, and the water discharge module500of the grid body1are mainly made of304stainless steel material. The cylindrical barrel3of the grid body1is connected to the conical barrel4thereof in a welded or flanged manner.

The water inlet5is radially formed in the cylindrical barrel3, and the sewage enters the water distribution area6from the water inlet5. The sewage in the water distribution area6flows through the first aperture screen plate area9tangentially under the guide action of the inflow water guide plate8, and then flows through the second aperture screen plate area10tangentially. The sewage filtration flux of the filtering module200can be further improved through the combination of cascade changes of the screen plate areas with different apertures. Under the combined action of the water retaining platform7, the inflow water guide plate8, the central water retaining weir11, as well as the first aperture screen plate area9and the second aperture screen plate area10which are arranged in a slightly curved surface, the water flowing out of the water distribution area6sequentially flows through the first aperture screen plate area9and the second aperture screen plate area10uniformly along the counterclockwise direction of the circumference, thus realizing the adequate water distribution of the entire fan-shaped screen plate area; meanwhile, the scrapers12are driven by the driving motor15to rotate continuously counterclockwise, so that a large amount of fine particles, hair, and other grid residue in the sewage intercepted by the surfaces of the first aperture screen plate area9and the second aperture screen plate area10are continuously scraped to the fan-shaped residue inlet17, and are enabled to fully adhere and rub with the guide rail18by ways of the second layer structures14of the scrapers12; the grid residue is completely scraped into the fan-shaped residue inlet17; the grid residue scraped into the squeezing cylinder19through the residue inlet17is discharged outside from the residue outlet21under the continuous rotation of the motor20after being fully squeezed; and the speed of the motor20can be flexibly adjusted according to the moisture content requirements for residue discharge. After being filtered by the first aperture screen plate area9and the second aperture screen plate area10of the filtering module200, the sewage flows by gravity into the conical catchment area22, and then flows out from the bottom water outlet23to a subsequent biological sewage treatment system.

Finally, it should be noted that the above specific implementations are only used to illustrate rather than to limit the technical solutions of the present disclosure. Although the present disclosure is described in detail with reference to examples, those of ordinary skill in the art should understand that modifications or equivalent substitutions made to the technical solutions of the present disclosure without departing from the spirit and scope of the technical solutions of the present disclosure shall be included in the scope of the claims of the present disclosure.