CN113926240A

CN113926240A - Sewage treatment prefiltration step filter equipment

Info

Publication number: CN113926240A
Application number: CN202111226053.1A
Authority: CN
Inventors: 于力
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-10-21
Filing date: 2021-10-21
Publication date: 2022-01-14

Abstract

The invention discloses a primary filtering stepped filtering device for sewage treatment.A stepped filtering belt which is obliquely arranged from bottom to top is arranged between a filtering tank and a discharge pipe corresponding to an inlet pipe, the stepped filtering belt comprises a filtering part consisting of filtering units, the cross section of each filtering unit is T-shaped, and the horizontal parts of the filtering units are hinged with each other at the edge side to form a complete circulating belt. The filtering units forming the stepped filtering belt are main filtering elements which can be of a net structure or a porous filtering plate, corresponding horizontal parts of the filtering units are hinged with each other to form the filtering belt similar to a conveying belt, and vertical parts of the filtering units can enlarge the filtering area and prevent trapped impurities from sliding downwards on the stepped filtering belt.

Description

Sewage treatment prefiltration step filter equipment

Technical Field

The invention belongs to the technical field of sewage treatment, and particularly relates to a primary filtering step type filtering device for sewage treatment.

Background

In the municipal sewage treatment process, the follow-up processing process is directly influenced by the pre-treatment process, the sewage treatment generally comprises pretreatment, impurities in water are filtered mainly by utilizing the filtering action of a coarse grid and a fine grid, mainly floating impurities such as leaves, straws, plastic bags and the like, then the water further enters a grit chamber for sand filtration, finer impurities in the water are filtered, then the nutrients in the water are degraded by microorganisms through an oxidation pond and a digestion tank, and finally the final processing process of a secondary sedimentation tank and a disinfection tank is carried out. If the pretreatment can remove the large impurities in the water body in a sufficient amount, the consumption is greatly reduced in the subsequent treatment process, otherwise, the impurities in the water body need to be treated for the second time, and more equipment investment and capital investment are brought.

The existing water body impurity filtering device is characterized in that a coarse grating and a fine grating are arranged for filtering impurities in a water body as much as possible in a coarse filtering process, and a circularly driven shifting tooth is correspondingly arranged, after the impurities are separated under the action of the grating, the impurities are stripped off the grating through the shifting tooth, so that the grating has a better filtering effect, even if the fine grating is used, gaps among the gratings are still large for mounting the shifting tooth, although the distance between the gratings is greatly reduced relative to the coarse grating, the impurities in the water body are not sufficiently filtered, small plastic and paper scraps in the water body can easily pass through the grating of the fine grating, and although the subsequent sand filtering effect is realized, the load of sand filtering is increased, and the processing cost is higher.

What the grid was effective is that slender is the impurity of rigidity class, to the soft impurity to the string, the filter effect is poor, and the string twines the grid easily simultaneously, hinders the orbit of dialling the tooth even, needs the manual work to reject. Some impurities can be adsorbed on the shifting teeth to enter the water body for the second time, and the defects are obvious.

Therefore, the invention mainly aims at the primary filtration process in the water purification process, reduces the large and small impurities in the water, solves the defects of the traditional grid type filtration, and unifies the device to achieve the purpose of reducing the equipment cost input.

Disclosure of Invention

The invention aims to provide a primary filtering step type filtering device for sewage treatment, which solves the defects of the traditional grid type filtering and unifies devices to achieve the purpose of reducing equipment cost investment.

In order to solve the technical problems, the invention is realized by the following technical scheme:

a sewage treatment primary filtration stepped filtering device comprises a filtering tank arranged at the front end of water treatment, wherein one side of the filtering tank is communicated with a raw water inlet pipe, the other side of the filtering tank is communicated with a filtered water discharge pipe, and a stepped filtering belt which is obliquely arranged from bottom to top is arranged between the filtering tank and the discharge pipe corresponding to the inlet pipe;

the end part of the stepped filter belt is sleeved with a driving gear, and the driving gear at the upper part is provided with a driving motor and drives the stepped filter belt to move circularly;

the step type filter belt comprises a filter part consisting of filter units, the cross sections of the filter units are T-shaped, and the horizontal parts of the filter units are hinged with each other at the sides to form a complete circulating belt;

and the upper conveying tail end corresponding to the stepped filter belt is provided with a receiving groove.

Further, the filter unit includes the filter screen and is located the limit frame of filter screen tip, the limit frame has the draw-in groove that is used for block filter screen tip, and adjacent filter unit's articulated position is located the limit frame.

Furthermore, the side of the filter screen is provided with a frame.

Furthermore, the end parts of the side frames are provided with hinge sleeves, hinge shafts are sleeved in the corresponding hinge sleeves between the adjacent side frames, and the teeth of the driving gear are connected with the hinge shafts and driven.

Furthermore, the articulated shaft is sleeved with a roller at the tooth joint position corresponding to the driving gear, the roller rotates on the articulated shaft, and the articulated shaft is provided with a limiting sheet for limiting the roller.

Furthermore, the two groups of driving gears are arranged on the same side and are sleeved on the same driving shaft, a supporting frame is arranged between the driving shafts corresponding to the upper side and the lower side, the end part of the supporting frame is sleeved with the driving shaft and is in rotating fit with the driving shaft, the end part of the hinged shaft is sleeved with the roller, and a wheel groove for supporting the rolling of the roller is arranged at the position, corresponding to the roller, of the supporting frame.

Further, the end part of the driving shaft corresponding to the upper part is sleeved with a belt pulley, and the motor drives the belt pulley through a belt.

Furthermore, the driving shaft corresponding to the upper part is hollow, a water spraying hole is arranged at the part between the two driving gears, and the end part of the driving shaft is communicated with a high-pressure water pipe connected with the hollow part.

The invention has the following beneficial effects:

(1) the stepped filter belt is stepped, the filter units forming the stepped filter belt are main filter elements which can be of a net structure or a porous filter plate, corresponding horizontal parts of the stepped filter belt are hinged with each other to form the filter belt similar to a conveying belt, and the vertical parts can enlarge the filter area, prevent trapped impurities from sliding downwards on the stepped filter belt, and are particularly suitable for easily rolling impurities towards plastic bottles and the like.

(2) The stepped filter belt has smaller filter holes and better interception effect, the problems that the grating type filter gap is large and the shifting teeth are difficult to peel are solved, and intercepted impurities can stay on the filter belt and move upwards along with the circulating movement of the filter belt and finally fall into the receiving groove.

Of course, it is not necessary for any product in which the invention is practiced to achieve all of the above-described advantages at the same time.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.

FIG. 1: the invention has a schematic structure.

FIG. 2: the invention relates to a disassembly structure diagram of the upper part of a step type filter belt.

FIG. 3: the invention discloses a structure drawing for disassembling a filtering unit.

FIG. 4: the invention relates to a structure diagram of the matching of a filtering unit and a hinged shaft.

FIG. 5: the invention relates to a mounting structure diagram of the upper part of a step type filter belt.

FIG. 6: the invention relates to a mounting structure diagram of a driving shaft and a supporting frame.

FIG. 7: the invention relates to a combined installation structure diagram of a filtering unit.

In the drawings, the components represented by the respective reference numerals are listed below:

the filter tank comprises a filter tank 1, an inlet pipe 11, a discharge pipe 12, a stepped filter belt 2, a driving gear 6, a filter unit 3, a receiving groove 13, a filter screen 31, a side frame 5, a clamping groove 51, a frame 32, a hinge sleeve 52, a hinge shaft 4, a roller 41, a limiting sheet 42, a driving shaft 61, a supporting frame 7, a roller 43, a wheel groove 71, a belt pulley 63, a water spray hole 62 and a high-pressure water pipe 64.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "opening," "upper," "lower," "thickness," "top," "middle," "length," "inner," "peripheral," and the like are used in an orientation or positional relationship that is merely for convenience in describing and simplifying the description, and do not indicate or imply that the referenced component or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be considered as limiting the present invention.

As shown in fig. 1-7: a sewage treatment primary filtration step type filtering device comprises a filtering tank 1 arranged at the front end of water treatment, wherein the filtering tank is built in a ground surface excavation mode, the side wall of the filtering tank is formed by bricks, one side of the filtering tank 1 is communicated with a raw water inlet pipe 11 and is connected with a municipal pipe network or a sewage treatment station, the other side of the filtering tank 1 is communicated with a filtered water discharge pipe 12 and is transferred to the next treatment point, and a step type filtering belt 2 which is obliquely arranged from bottom to top is arranged between the inlet pipe 11 and the discharge pipe 12 corresponding to the filtering tank 1; the angle of inclination is between 30-45 deg.. The side of the stepped filter belt is close to the side wall of the filter tank as much as possible, so that water flow is prevented from permeating from the side, and the stepped filter belt belongs to interception type blocking.

As shown in fig. 2: the end part of the stepped filter belt 2 is sleeved with a driving gear 6, an upper driving gear exceeds the mouth part of the filter tank and extends upwards, and a lower driving gear corresponds to the bottom of the tank body and is provided with a supporting structure. The upper drive gear 6 is fitted with a drive motor, not shown in the figure. And drives the step type filter belt 2 to move circularly; the stepped filter belt on the upper side moves from bottom to top.

As shown in fig. 3: the step type filter belt 2 comprises a filter part consisting of filter units 3, the cross section of each filter unit 3 is T-shaped, the filter unit is similar to a single step shape and is provided with a horizontal part and a vertical part, the horizontal part is vertical to the vertical part, and the horizontal parts of the filter units 3 are hinged with each other at the edge sides to form a complete circulating belt;

as shown in fig. 1: the upper conveying tail end corresponding to the step type filter belt 2 is provided with a receiving groove 13.

In the invention, the step type filter belt is step type, is called step type and is provided with a driving gear at the end part for enabling the step type filter belt to circularly move, the filter unit forming the step type filter belt is a main filter element which can be of a net structure and can be a porous filter plate, corresponding horizontal parts of the filter unit are mutually hinged to form the filter belt similar to a conveying belt, and a vertical part can enlarge the filter area and simultaneously prevent trapped impurities from sliding downwards on the step type filter belt, in particular to the easily rolled impurities towards plastic bottles and the like.

The stepped filter belt has smaller filter holes and better interception effect, the problems that the grating type filter gap is large and the shifting teeth are difficult to peel are solved, and intercepted impurities can stay on the filter belt and move upwards along with the circulating movement of the filter belt and finally fall into the receiving groove.

As shown in fig. 3: the filter unit 3 comprises a filter screen 31 and a side frame 5 positioned at the end part of the filter screen, the side frame 5 is provided with a clamping groove 51 used for clamping the end part of the filter screen 31, and the hinge joint position of the adjacent filter unit 3 is positioned at the side frame 31. The side frame is made of metal, has the effect of reinforcing the end part of the filter unit, is used for installing an articulated piece, is T-shaped, is matched with the side of the filter screen, and can be reinforced by self-tapping screws for improving the stability after being clamped.

As shown in fig. 3: the filter screen 31 has a frame 32 at one side. The reinforcing structure is used for reinforcing the filter screen, the strength of the filter screen is improved, the filter screen is net-shaped, and the bearing performance is improved under the reinforcing effect of the frame.

As shown in fig. 3-4: the end parts of the side frames 5 are provided with hinge sleeves 52, hinge shafts 4 are sleeved in the corresponding hinge sleeves 52 between the adjacent side frames 5, and the driving gear 6 is in tooth connection with the hinge shafts 4 and drives the hinge shafts. The articulated shaft is shaft-like, and the articulated shaft is unified in the articulated cover cup joint that the same one side of frame corresponds, and the articulated shaft not only is as articulated effect, is used for simultaneously with drive gear tooth joint cooperation for transmission assembly.

As shown in fig. 4: the articulated shaft 4 is sleeved with a roller 41 at a tooth joint position corresponding to the driving gear 6, the roller 41 rotates on the articulated shaft 4, and the articulated shaft 4 is provided with a limiting sheet 42 for limiting the roller 41. The limiting sheet is used for limiting the position of the roller, the roller is prevented from transversely moving on the hinged shaft, meanwhile, the limiting sheet can accurately position the driving gear and accurately clamp the driving gear into the roller, and the roller has the friction effect of reducing the driving gear and the hinged shaft.

As shown in fig. 2 and 4: two sets of driving gears 6 on the same side are symmetrical about the center and are sleeved on the same driving shaft 61, a supporting frame 7 is installed between the driving shafts 61 corresponding to the upper side and the lower side, the end part of the supporting frame 7 is sleeved on the driving shaft 61 and is in rotating fit, the end part of the hinge shaft 4 is sleeved on the roller 43, and a wheel groove 71 used for supporting the roller 43 to roll is installed at the position, corresponding to the roller 43, of the supporting frame 7. The support roller is used for supporting the rolling of the roller, and the hinged shaft is supported in the wheel groove through the roller, so that the upper side conveying part of the whole stepped filter belt has a support effect, and the support strength is improved.

As shown in fig. 2: a belt pulley 63 is sleeved on the end of the driving shaft 61 corresponding to the upper part, and the motor drives the belt pulley 63 through a belt.

As shown in fig. 6: the upper portion of the driving shaft 61 is hollow, specifically, a pipe body with an open end is used as the driving shaft, a water spraying hole 62 is opened at a portion corresponding to a space between the two driving gears 6, and a high pressure water pipe 64 connected to the hollow portion is connected to an end portion of the driving shaft. The butt joint is realized through sleeve pipe and drive shaft tip to high pressure water pipe, under the prerequisite that does not influence drive shaft rotation, improves the leakproofness, connects high pressure water pipe and is used for improving water pressure, outwards sprays water through the spray pipe, will adhere to and adsorb impurity on the filter unit and erode down, and along with the rotation of drive shaft, jet stream is the arc, makes impurity break away from the filter unit and keeps higher filtration efficiency, and the impurity after erodeing just in time falls into and accepts the groove.

In the description herein, references to the description of "one embodiment," "an example," "a specific example" or the like are intended to mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The preferred embodiments of the invention disclosed above are intended to be illustrative only. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise embodiments disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best utilize the invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

1. The utility model provides a sewage treatment prefiltration step filter equipment which characterized in that:

the device comprises a filtering tank (1) arranged at the front end of water treatment, wherein one side of the filtering tank (1) is communicated with a raw water inlet pipe (11), the other side of the filtering tank (1) is communicated with a filtered water outlet pipe (12), and a stepped filtering belt (2) which is obliquely arranged from bottom to top is arranged between the inlet pipe (11) and the outlet pipe (12) of the filtering tank (1);

the end part of the stepped filter belt (2) is sleeved with a driving gear (6), and the driving gear (6) at the upper part is provided with a driving motor and drives the stepped filter belt (2) to move circularly;

the step type filter belt (2) is a filter part consisting of filter units (3), the cross sections of the filter units (3) are T-shaped, and the horizontal parts of the filter units (3) are hinged to each other at the sides to form a complete circulating belt;

the upper conveying tail end corresponding to the step type filter belt (2) is provided with a receiving groove (13).

2. The primary filtering stepped filtering device for sewage treatment according to claim 1, wherein: the filter unit (3) comprises a filter screen (31) and a side frame (5) located at the end part of the filter screen, the side frame (5) is provided with a clamping groove (51) used for clamping the end part of the filter screen (31), and the hinge joint position of the adjacent filter unit (3) is located on the side frame (31).

3. The sewage treatment primary filtration step type filtering device of claim 2, wherein: the side of the filter screen (31) is provided with a frame (32).

4. The sewage treatment primary filtration step type filtering device of claim 2 or 3, wherein: the end part of each side frame (5) is provided with a hinge sleeve (52), a hinge shaft (4) is sleeved in the corresponding hinge sleeve (52) between the adjacent side frames (5), and the driving gear (6) is in tooth joint with the hinge shaft (4) and drives the hinge shaft.

5. The primary filtering stepped filtering device for sewage treatment according to claim 4, wherein: the articulated shaft (4) is sleeved with a roller (41) corresponding to the tooth joint position of the driving gear (6), the roller (41) rotates on the articulated shaft (4), and the articulated shaft (4) is provided with a limiting sheet (42) for limiting the roller (41).

6. The primary filtering stepped filtering device for sewage treatment according to claim 4, wherein: the same-side driving gears (6) are two groups and are sleeved on the same driving shaft (61), a supporting frame (7) is installed between the driving shafts (61) corresponding to the upper portion and the lower portion, the end portion of the supporting frame (7) is sleeved with the driving shaft (61) and is in rotating fit with the driving shaft, the end portion of the hinged shaft (4) is sleeved with the roller (43), and a wheel groove (71) used for supporting the roller (43) to roll is installed in the position, corresponding to the roller (43), of the supporting frame (7).

7. The sewage treatment primary filtration step filter device of claim 6, wherein: the end part of the driving shaft (61) corresponding to the upper part is sleeved with a belt pulley (63), and the motor drives the belt pulley (63) through a belt.

8. The sewage treatment primary filtration step filter device of claim 6, wherein: the driving shaft (61) corresponding to the upper part is hollow, a water spraying hole (62) is arranged at the part corresponding to the space between the two driving gears (6), and the end part of the driving shaft is communicated with a high-pressure water pipe (64) connected with the hollow part.