CN220385907U - Filtration of sewage treatment corridor of intaking - Google Patents

Abstract

The utility model discloses a filtering structure of a sewage treatment water inlet gallery, wherein a filtering screen plate is vertically arranged at the downstream of a grid machine in the water inlet gallery, two sides of the filtering screen plate in the width direction are connected with two side walls of the water inlet gallery, the height of the filtering screen plate is matched with the depth of the water inlet gallery, the lower end of the filtering screen plate is abutted with the bottom surface of the water inlet gallery, and a plurality of tiny and tightly distributed filtering holes are formed in the filtering screen plate. According to the utility model, the filter screen plate is additionally arranged at the downstream of the grid machine in the water inlet gallery, sewage is further filtered through the filter screen plate, and the fine filter holes on the filter screen plate are easier to block slender impurities such as hair, cotton yarns and the like in the sewage compared with the slender gaps among the rake teeth on the grid machine; the problem that the filtering effect of the existing filtering structure on sewage inflow is poor can be effectively solved, the filtering effect on slender sundries in sewage is improved, the possibility of equipment failure is reduced, and the running stability of a sewage treatment system is enhanced.

Description

Filtration of sewage treatment corridor of intaking

Technical Field

The utility model belongs to the technical field of wastewater or sewage treatment, and particularly relates to a filtering structure of a sewage treatment water inlet gallery.

Background

In a sewage treatment plant, before sewage enters various sewage treatment tanks of corresponding processes, solid impurities in the sewage are required to be filtered; at present, solid impurities with lighter texture or larger size in sewage are generally filtered through a grid machine arranged on a water inlet gallery, and then fine sand grains in the sewage are filtered through a cyclone sand setting tank.

In order to improve the filtering effect, a coarse grating machine and a fine grating machine are arranged on a water inlet gallery in sequence in a sewage treatment plant, but after the filtering of the fine grating, part of slender sundries such as hair, cotton yarns and the like still exist in the sewage; these elongated impurities enter the subsequent sewage treatment tanks along with sewage, not only can affect the sewage treatment effect, but also can be wound on related equipment in the sewage treatment tanks or attached to pipe orifices and pipe walls of related pipelines, and equipment faults and pipeline blockage are easily caused. Therefore, it is necessary to design a filtering structure for a sewage treatment water inlet gallery, so as to improve the filtering effect on slender impurities in sewage, reduce the possibility of equipment failure, and improve the stability of a sewage treatment system.

Disclosure of Invention

Aiming at the defects in the prior art, the utility model aims to provide a filtering structure of a sewage treatment water inlet gallery, solve the technical problem that the filtering effect of the existing filtering structure on sewage water inlet is poor, and obtain the effects of improving the filtering effect and reducing the possibility of faults.

In order to solve the technical problems, the utility model adopts the following technical scheme:

a filtering structure of a sewage treatment water inlet gallery comprises a grid machine arranged on the water inlet gallery; the lower part of the water inlet gallery is vertically provided with a filter screen plate, the width of the filter screen plate is matched with the width of the water inlet gallery, two sides of the width direction of the filter screen plate are connected with two side walls of the water inlet gallery, the height of the filter screen plate is matched with the depth of the water inlet gallery, the lower end of the filter screen plate is abutted with the bottom surface of the water inlet gallery, and the filter screen plate is provided with a plurality of tiny and closely distributed filter holes in the thickness direction so as to filter tiny sundries in sewage.

Further, the filter screen plate is obliquely arranged vertically downwards, and the upper end of the filter screen plate is higher than or equal to the upper edge of the water inlet gallery.

Further, the number of the water inlet galleries is three, and the water inlet galleries are arranged in parallel, and each water inlet gallery is provided with a grid machine and a filter screen plate.

Further, the filter screen plate comprises a rectangular outer frame and an inner frame, wherein one surface of the outer frame facing the upstream is provided with a circle of step surface formed along the inner edge of the outer frame in a recessed manner, the size of the inner frame is matched with that of the circle of step surface, and the inner frame is positioned on the step surface and fixedly connected with the outer frame through a screw penetrating the step surface; the filter screen is arranged on the inner side of the installation frame, four sides of the filter screen are clamped and fixed between the step surface and the inner frame, and the filter screen is provided with a plurality of tiny and tightly distributed filter holes.

Further, the two sides of the width direction of the filter screen plate and the side wall of the water inlet gallery at the corresponding side are vertically provided with the chute plates respectively, the chute plates are fixedly connected with the side wall of the water inlet gallery at the corresponding side, the cross section of each chute plate is U-shaped, the opening of each chute plate faces the filter screen plate, the U-shaped area of each chute plate is formed into a chute matched with the filter screen plate, and the two sides of the width direction of the filter screen plate are respectively positioned in the chute of the corresponding side chute plate and are in sliding fit.

Further, a lifting mechanism is arranged above the water inlet gallery, and the acting end of the lifting mechanism is connected with the upper end of the filter screen plate and can drive the filter screen plate to slide along the chute.

Further, the lifting mechanism comprises a supporting frame and a winch which are fixedly arranged on the ground, the supporting frame comprises a cross rod positioned above the water inlet gallery, a pulley is arranged on the cross rod, and the tail end of a traction rope on the winch upwards bypasses the pulley, then downwards extends and is connected with the upper end of the filter screen plate.

Further, the lower end of the outer frame extends towards the upstream to form a mounting plate, a slag collecting groove plate is detachably arranged on the mounting plate, the slag collecting groove plate extends along the width direction of the filter screen plate and is matched with the width of the inner side of the outer frame, a slag collecting groove extending along the width direction of the filter screen plate is formed in the upper surface of the slag collecting groove plate, and the upper part of the side wall of the slag collecting groove close to the filter screen extends vertically and is inclined towards the downstream to be abutted with the filter screen; the size of the mounting plate in the width direction of the filter screen plate is smaller than that of the slag collecting groove plate, and a plurality of penetrating water leakage holes are formed in the part, outside the mounting plate, of the slag collecting groove plate at the bottom of the slag collecting groove.

Further, the mounting plate is provided with a vertical limiting protrusion, the lower surface of the slag collecting groove plate is provided with a limiting hole matched with the limiting protrusion, and the limiting protrusion is positioned in the limiting hole and in interference fit so as to realize detachable connection of the slag collecting groove plate and the mounting plate.

Compared with the prior art, the utility model has the following beneficial effects:

according to the filtering structure of the sewage treatment water inlet gallery, the filtering net plate is additionally arranged at the downstream of the grid machine in the water inlet gallery, sewage is further filtered through the filtering net plate, and the fine filtering holes in the filtering net plate are easier to block slender impurities such as hair and cotton yarns in the sewage compared with the slender gaps among rake teeth on the grid machine; the problem that the filtering effect of the existing filtering structure on sewage inflow is poor can be effectively solved, the filtering effect on slender sundries in sewage is improved, the possibility of equipment failure is reduced, and the running stability of a sewage treatment system is enhanced.

Drawings

FIG. 1 is a schematic diagram of a filtration structure of a sewage treatment intake gallery of an embodiment;

FIG. 2 is a partial schematic view of FIG. 1;

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 2;

FIG. 4 is an enlarged schematic view at B in FIG. 3;

the device comprises a water inlet gallery 1, a filter screen plate 2, an outer frame 21, an inner frame 22, screws 23, a filter screen 24, a chute plate 3, a support frame 4, a cross rod 5, a winch 6, a traction rope 7, a pulley 8, a mounting plate 9, a slag collecting chute plate 10, a slag collecting chute 11 and a limiting protrusion 12.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present utility model more clear, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present utility model. It will be apparent that the described embodiments are some, but not all, embodiments of the utility model. The components of the embodiments of the present utility model generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations. Thus, the following detailed description of the embodiments of the utility model, as presented in the figures, is not intended to limit the scope of the utility model, as claimed, but is merely representative of selected embodiments of the utility model. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

It should be noted that: like reference numerals and letters denote like items in the following figures, and thus once an item is defined in one figure, no further definition or explanation thereof is necessary in the following figures. In the description of the present utility model, it should be noted that, directions or positional relationships indicated by terms such as "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., are directions or positional relationships based on those shown in the drawings, or are directions or positional relationships conventionally put in use of the inventive product, are merely for convenience of describing the present utility model and simplifying the description, and are not indicative or implying that the apparatus or element to be referred to must have a specific direction, be constructed and operated in a specific direction, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," "third," and the like are used merely to distinguish between descriptions and should not be construed as indicating or implying relative importance. Furthermore, the terms "horizontal," "vertical," and the like do not denote a requirement that the component be absolutely horizontal or overhang, but rather may be slightly inclined. As "horizontal" merely means that its direction is more horizontal than "vertical", and does not mean that the structure must be perfectly horizontal, but may be slightly inclined. In the description of the present utility model, it should also be noted that, unless explicitly specified and limited otherwise, the terms "disposed," "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Examples:

referring to fig. 1 and 2, a filtering structure of a sewage treatment water inlet gallery includes a grating machine (not shown) disposed on the water inlet gallery 1; the lower stream of the grid machine in the water inlet gallery 1 is vertically provided with a filter screen plate 2, the width of the filter screen plate 2 is matched with the width of the water inlet gallery 1, two sides of the width direction of the filter screen plate 2 are connected with two side walls of the water inlet gallery 1, the height of the filter screen plate 2 is matched with the depth of the water inlet gallery 1, the lower end of the filter screen plate 2 is abutted with the bottom surface of the water inlet gallery 1, and the filter screen plate 2 is provided with a plurality of tiny and tightly distributed filter holes in the thickness direction so as to filter tiny sundries in sewage.

According to the filtering structure of the sewage treatment water inlet gallery, the filtering net plate 2 is additionally arranged at the downstream of the grid machine in the water inlet gallery 1, sewage is further filtered through the filtering net plate 2, and fine filtering holes in the filtering net plate 2 are easier to block slender sundries such as hair and cotton yarns in the sewage compared with narrow and long gaps among rake teeth on the grid machine; the problem that the filtering effect of the existing filtering structure on sewage inflow is poor can be effectively solved, the filtering effect on slender sundries in sewage is improved, the possibility of equipment failure is reduced, and the running stability of a sewage treatment system is enhanced; in implementation, the aperture of the filter holes is 300-1000 meshes.

Referring to fig. 2 and 3, the filter screen plate 2 is disposed obliquely downstream in the vertical direction, and the upper end of the filter screen plate 2 is higher than the water inlet gallery 1 or is at the same height as the upper edge of the water inlet gallery 1; the inclined arrangement not only can increase the contact area of the filter screen plate 2 and sewage and improve the filtering efficiency, but also can lead the slender sundries blocked by the filter screen plate 2 to be hung on the filter screen plate 2 under the action of gravity rather than deposited at the bottom of the water inlet gallery 1, so that the filter screen plate 2 can be taken out periodically for cleaning, and compared with blocking the water inlet gallery 1 and cleaning the bottom of the water inlet gallery 1, the filter screen plate 2 is easier.

Referring to fig. 1, in the present embodiment, the number of water inlet galleries 1 is three and arranged in parallel, and each water inlet gallery 1 is provided with a grid machine and a filter screen plate 2; thus, when the grid machine on one water inlet gallery 1 needs to be maintained or the filter screen plate 2 is taken out for cleaning, water inlet of the corresponding water inlet gallery 1 can be reduced or blocked, and the other two water inlet galleries 1 can normally inlet, so that the normal operation of sewage treatment is ensured, and meanwhile, the filtering effect on sewage can also be ensured.

Referring to fig. 1 and 2, since sewage can scour and erode the filter screen plate 2 when flowing through the filter holes, the specific structure of the filter screen plate 2 is designed as follows for easy replacement: the filter screen plate 2 comprises an outer frame 21 and an inner frame 22 which are rectangular, wherein one surface of the outer frame 21 facing the upstream is provided with a circle of step surface formed along the inner edge of the outer frame 21 in a recessed way, the size of the inner frame 22 is matched with that of the circle of step surface, and the inner frame 22 is positioned on the step surface and fixedly connected with the outer frame 21 through a screw 23 which penetrates through the step surface; the filter screen 24 is arranged on the inner side of the mounting frame, four sides of the filter screen 24 are clamped and fixed between the step surface and the inner frame 22, and the filter screen 24 is provided with a plurality of tiny and tightly distributed filter holes; thus, the outer frame 21 is connected with the side wall of the water inlet gallery 1, the filter screen 24 can be replaced only by taking down the inner frame 22,

referring to fig. 1 and 3, a sliding groove plate 3 is vertically arranged between two sides of the filter screen plate 2 in the width direction and the side wall of the water inlet gallery 1 at the corresponding side, the sliding groove plate 3 is fixedly connected with the side wall of the water inlet gallery 1 at the corresponding side, the cross section of the sliding groove plate 3 is U-shaped, the opening faces the filter screen plate 2, the U-shaped area of the sliding groove plate 3 is formed into a chute matched with the filter screen plate 2, and two sides of the filter screen plate 2 in the width direction are respectively positioned in the chute of the corresponding side sliding groove plate 3 and are in sliding fit; thus, when the filter screen 24 needs to be cleaned or replaced, an upward force can be applied to the filter screen plate 2, so that the filter screen plate 2 moves upwards along the chute to be separated from the sewage in the water inlet gallery 1, and the filter screen 24 can be cleaned or replaced.

In order to facilitate the upward movement of the filter screen plate 2 along the chute, in this embodiment, a lifting mechanism is further arranged above the water inlet gallery 1, and the acting end of the lifting mechanism is connected with the upper end of the filter screen plate 2 and can drive the filter screen plate 2 to slide along the chute; specifically, the lifting mechanism comprises a supporting frame 4 and a winch 6 which are fixedly arranged on the ground, the supporting frame 4 comprises a cross rod 5 positioned above the water inlet gallery 1, a pulley 8 is arranged on the cross rod 5, and the tail end of a traction rope 7 on the winch 6 upwards bypasses the pulley 8 and then downwards extends and is connected with the upper end of the filter screen plate 2; the force application direction is converted through the pulley, so that the requirement on the structural strength of the support frame is lower compared with the case that the winch is directly arranged on the cross rod.

Referring to fig. 2 to 4, a mounting plate 9 is formed by extending the lower end of the outer frame 21 towards the upstream, a slag collecting trough plate 10 is detachably arranged on the mounting plate 9, the slag collecting trough plate 10 is arranged by extending along the width direction of the filter screen plate 2 and is matched with the width of the inner side of the outer frame 21, a slag collecting trough 11 extending along the width direction of the filter screen plate 2 is formed on the upper surface of the slag collecting trough plate 10, and the upper part of the side wall of the slag collecting trough 11 close to the filter screen 24 extends vertically and is inclined towards the downstream to be abutted with the filter screen 24; the size of the mounting plate 9 in the width direction of the filter screen plate 2 is smaller than that of the slag collecting groove plate 10, and a plurality of through water leakage holes (not shown in the figure) are formed in the bottom of the slag collecting groove 11 at the part of the slag collecting groove plate 10 outside the mounting plate 9; the mounting plate 9 is provided with a vertical limiting bulge 12, the lower surface of the slag collecting groove plate 10 is provided with a limiting hole matched with the limiting bulge 12, and the limiting bulge 12 is positioned in the limiting hole and in interference fit to realize detachable connection of the slag collecting groove plate 10 and the mounting plate 9;

thus, when the filter screen 24 needs to be cleaned, the whole filter screen 2 does not need to be dismounted, the filter screen 2 can be driven by the winch 6 to move upwards to be above the sewage level of the water inlet gallery 1, then a long brush or other tools with a handle are manually used for cleaning from top to bottom along the filter screen 24, the slag collecting groove 11 receives the slender sundries cleaned from the filter screen 24 so as to prevent the slender sundries from falling into sewage again, and the water leakage holes at the bottom of the slag collecting groove 11 can discharge sewage flowing down from the filter screen 24 and the slender sundries; after cleaning, the slag collecting trough plate 10 can be lifted upwards, the limiting protrusion 12 is separated from the limiting hole, and the slag collecting trough plate 10 can be removed, so that the slender sundries in the slag collecting trough 11 can be conveniently transferred; since the slag chute plate 10 functions only when the filter screen 24 is cleaned, the slag chute plate 10 can be mounted to the mounting only when the filter screen 24 is cleaned and removed after the cleaning is completed to transfer the collected elongated debris and cleaned for the next use.

Finally, it should be noted that the above embodiments are only for illustrating the technical solution of the present utility model and not for limiting the technical solution, and those skilled in the art should understand that modifications and equivalents may be made to the technical solution of the present utility model without departing from the spirit and scope of the present utility model, and all such modifications and equivalents are included in the scope of the claims.

Claims (7)

1. A filtering structure of a sewage treatment water inlet gallery comprises a grid machine arranged on the water inlet gallery; the method is characterized in that: the lower part of the water inlet gallery is vertically provided with a filter screen plate, the width of the filter screen plate is matched with the width of the water inlet gallery, two sides of the filter screen plate in the width direction are connected with two side walls of the water inlet gallery, the height of the filter screen plate is matched with the depth of the water inlet gallery, the lower end of the filter screen plate is abutted with the bottom surface of the water inlet gallery, and a plurality of filter holes are formed in the thickness direction of the filter screen plate so as to filter sundries in sewage;

the filter screen plate comprises a rectangular outer frame and an inner frame, wherein one surface of the outer frame facing the upstream is provided with a circle of step surface formed along the inner edge of the outer frame in a recessed manner, the size of the inner frame is matched with that of the circle of step surface, and the inner frame is positioned on the step surface and fixedly connected with the outer frame through a screw penetrating the step surface; the inner side of the mounting frame is provided with a filter screen, four sides of the filter screen are clamped and fixed between the step surface and the inner frame, and the filter screen is provided with a plurality of filter holes;

the lower end of the outer frame extends towards the upstream to form a mounting plate, a slag collecting groove plate is detachably arranged on the mounting plate, the slag collecting groove plate extends along the width direction of the filter screen plate and is matched with the width of the inner side of the outer frame, a slag collecting groove extending along the width direction of the filter screen plate is formed in the upper surface of the slag collecting groove plate, and the upper part of the side wall of the slag collecting groove close to the filter screen extends vertically and is inclined towards the downstream to be in abutting connection with the filter screen; the size of the mounting plate in the width direction of the filter screen plate is smaller than that of the slag collecting groove plate, and a plurality of penetrating water leakage holes are formed in the part, outside the mounting plate, of the slag collecting groove plate at the bottom of the slag collecting groove.

2. The filtration structure of a sewage treatment intake gallery of claim 1, wherein: the filter screen plate is obliquely arranged vertically downwards, and the upper end of the filter screen plate is higher than the water inlet gallery or is equal to the upper edge of the water inlet gallery in height.

3. The filtration structure of a sewage treatment intake gallery of claim 1, wherein: the number of the water inlet galleries is three, the water inlet galleries are arranged in parallel, and each water inlet gallery is provided with a grid machine and a filter screen plate.

4. The filtration structure of a sewage treatment intake gallery of claim 1, wherein: a sliding groove plate is vertically arranged between two sides of the width direction of the filter screen plate and the side wall of the water inlet gallery at the corresponding side respectively, the sliding groove plate is fixedly connected with the side wall of the water inlet gallery at the corresponding side, the cross section of the sliding groove plate is U-shaped, the opening of the sliding groove plate faces the filter screen plate, the U-shaped area of the sliding groove plate is formed into a sliding groove matched with the filter screen plate, and two sides of the width direction of the filter screen plate are respectively located in the sliding groove of the corresponding side sliding groove plate and are in sliding fit with the sliding groove of the corresponding side sliding groove plate.

5. The filtration structure of a sewage treatment intake gallery of claim 4, wherein: a lifting mechanism is arranged above the water inlet gallery, and the acting end of the lifting mechanism is connected with the upper end of the filter screen plate and can drive the filter screen plate to slide along the chute.

6. The filtration structure of a wastewater treatment intake gallery of claim 5, wherein: the lifting mechanism comprises a supporting frame and a winch, wherein the supporting frame is fixedly arranged on the ground, the supporting frame comprises a cross rod positioned above the water inlet gallery, a pulley is arranged on the cross rod, and the tail end of a traction rope on the winch upwards bypasses the pulley, then downwards extends and is connected with the upper end of the filter screen plate.

7. The filtration structure of a wastewater treatment intake gallery of claim 6, wherein: the mounting plate is provided with a vertical limiting bulge, the lower surface of the slag collecting groove plate is provided with a limiting hole matched with the limiting bulge, and the limiting bulge is positioned in the limiting hole and in interference fit so as to realize detachable connection of the slag collecting groove plate and the mounting plate.