CN222846547U - A biological filter for sewage treatment - Google Patents

Abstract

The utility model discloses a biological filter for sewage treatment, which comprises a tank body, a backflushing air-filling cavity, a water distributor, a first packing layer, a second packing layer, a third packing layer, a bottom bracket screen plate, a cylinder component, a sediment suction and discharge pipe, a communicating pipe, a backflushing water inlet, a water outlet, a rubber hose, a high-pressure air pump and an ultrafiltration core pipe. The utility model has reasonable structural design, realizes the back flushing and cleaning of the filtering structure by arranging the rubber hose between two adjacent filler layers and in a reciprocating inflation shrinkage state and combining the high-pressure gas action in the backflushing inflation cavity, loosens and cleans the filtering sediment, solves the problem that the filtering is influenced due to the blockage of sediment hardening between the filler layers, and simultaneously greatly enhances the backflushing effect and improves the biological filtering efficiency by introducing high-pressure backflushing water into the tank body through the backflushing water inlet.

Description

Biological filter for sewage treatment

Technical Field

The utility model relates to the field of sewage treatment, in particular to a biological filter for sewage treatment.

Background

The denitrification biological filter is a biological filter with denitrification function, and is developed on the basis of the traditional biological filter. Because the sewage treatment device has better denitrification capability, and has the advantages of small occupied area, high treatment efficiency, low engineering investment cost and the like, the sewage treatment device is widely used for sewage treatment deep denitrification.

The existing biological filter for sewage treatment has the defects that the filtering structure layers are too tight, the difficulty in cleaning sediment is large, and the effect of a single back flushing structure form is not obvious enough, so that the biological filter is unfavorable for improving the biological filter efficiency. Therefore, a biological filter for sewage treatment is proposed to solve the above problems.

Disclosure of utility model

The present utility model has been made to solve the above-mentioned problems, and an object of the present utility model is to provide a biological filter for sewage treatment.

The biological filter for sewage treatment comprises a tank body, wherein a collet screen plate is arranged in the middle of the tank body, a cylinder assembly is arranged at the lower end of the middle of the tank body, filler layers are sequentially arranged on the collet screen plate, rubber hoses are distributed between every two adjacent filler layers, the outer ends of the rubber hoses are connected with corresponding output ports of a high-pressure air pump positioned on the tank body, the other corresponding output port of the high-pressure air pump is communicated with the inside of a backflushing air charging cavity through a pipe body, an ultrafiltration core pipe is arranged in each cylinder of the cylinder assembly, the outer end of the ultrafiltration core pipe is communicated with a communicating pipe positioned at the bottom of the tank body, and water distributors are distributed at the tank mouth of the tank body.

Preferably, the filler layers include a first filler layer, a second filler layer, and a third filler layer.

Preferably, the recoil air-filling cavity is formed by a cylinder component, a bottom bracket screen and the inside of the tank body.

Preferably, the bottom end of each cylinder in the cylinder assembly is communicated with the sediment absorbing and discharging pipes distributed in the tank body through a pipe body.

Preferably, the electric control valves are arranged at the two ends of the communicating pipe, the outer ends of the sediment suction and discharge pipes and the outer ends of the rubber hose.

Preferably, one end of the communicating pipe is provided with a back flushing water inlet, and the other end of the communicating pipe is provided with a water outlet.

Compared with the prior art, the utility model has the advantages that the rubber hose is arranged between two adjacent filler layers and is in a reciprocating inflation shrinkage state, the filtering structure is subjected to back flushing cleaning under the action of high-pressure gas in the backflushing inflation cavity, filtering sediment is loosened and removed, the problem that the filtering is influenced due to the blockage of sediment hardening between the filler layers is solved, and simultaneously, the high-pressure backflushing water is introduced into the tank body through the backflushing water inlet, so that the backflushing effect is greatly enhanced, and the biological filtering efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings which are used in the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the description below are only some embodiments of the utility model, and that other drawings can be obtained from these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of the overall structure of the present utility model;

Fig. 2 is an enlarged view of the overall partial structure of the present utility model.

In the figure, 1, a pool body; 101, a backflushing aeration chamber, 2, a water distributor, 3, a first packing layer, 4, a second packing layer, 5, a third packing layer, 6, a bottom bracket screen, 7, a cylinder assembly, 8, a sediment suction and discharge pipe, 9, a communicating pipe, 901, a backflushing water inlet, 902, a water outlet, 10, a rubber hose, 11, a high-pressure air pump, 12 and an ultrafiltration core pipe.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the embodiments of the present utility model will be clearly and completely described below with reference to the drawings in the embodiments of the present utility model, and it is apparent that the embodiments described below are only some embodiments of the present utility model, not all embodiments of the present 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.

The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.

In the description of the present utility model, it should be understood that the directions or positional relationships indicated by the terms "upper", "lower", "top", "bottom", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

Referring to fig. 1-2, a biological filter for sewage treatment includes a tank body 1, a bottom support screen 6 is mounted in the middle of the tank body 1, a cylinder assembly 7 is mounted at the lower end of the middle of the tank body 1, packing layers are sequentially disposed on the bottom support screen 6, a rubber hose 10 is distributed between every two adjacent packing layers, the outer end of the rubber hose 10 is connected with a corresponding output port of a high-pressure air pump 11 positioned on the tank body 1, the other corresponding output port of the high-pressure air pump 11 is communicated with the inside of a backflushing air filling cavity 101 through a pipe body, an ultrafiltration core pipe 12 is mounted in each cylinder of the cylinder assembly 7, the outer end of the ultrafiltration core pipe 12 is communicated with a communicating pipe 9 positioned at the bottom of the tank body 1, and water distributors 2 are distributed at the tank mouth of the tank body 1.

The packing layers comprise a first packing layer 3, a second packing layer 4 and a third packing layer 5, which are helpful to form a gradual filtration structure.

The backflushing and inflating cavity 101 is formed by the cylinder assembly 7, the collet screen 6 and the inside of the tank body 1 so as to perform backflushing by utilizing air pressure penetration.

The bottom end of each cylinder in the cylinder assembly 7 is communicated with sediment suction and discharge pipes 8 distributed in the tank body 1 through a pipe body, so that the connection of an external sewage pump is convenient for cleaning.

The two ends of the communicating pipe 9, the outer end of the sediment suction and discharge pipe 8 and the outer end of the rubber hose 10 are respectively provided with an electric control valve, so as to achieve the effect of controlling the opening and closing.

Further, one end of the communicating pipe 9 is set as a backwash water inlet 901, and the other end of the communicating pipe 9 is set as a water outlet 902.

Compared with the prior art, under the action of the high-pressure air pump 11 for inflating the inside of the backflushing air inflation cavity 101 and the inside of the rubber hose 10 through the corresponding electric control valve, the rubber hose 10 is arranged between two adjacent filler layers and is in a reciprocating inflation shrinkage state, the filtering structure is reversely flushed and cleaned under the action of high-pressure air in the backflushing air inflation cavity 101, filtering sediments are removed loosely, the problem that the filtering is affected due to the blockage of sediment hardening between the filler layers is solved, and simultaneously, high-pressure backflushing water is introduced into the tank body 1 through the backflushing water inlet 901, so that the backflushing effect is greatly enhanced, and the biological filtering efficiency is improved.

It will be evident to those skilled in the art that the utility model is not limited to the details of the foregoing illustrative embodiments, and that the present utility model may be embodied in other specific forms without departing from the spirit or essential characteristics thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive, the scope of the utility model being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

While the utility model has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art that the foregoing embodiments may be modified or equivalents may be substituted for some of the features thereof, and that the modifications or substitutions do not depart from the spirit and scope of the embodiments of the utility model.

Claims (6)

1. A biological filter for sewage treatment comprises a tank body (1) and is characterized in that a collet screen (6) is arranged in the middle of the tank body (1), a cylinder assembly (7) is arranged at the lower end of the middle of the tank body (1), filler layers are sequentially arranged on the collet screen (6), rubber hoses (10) are distributed between every two adjacent filler layers, the outer ends of the rubber hoses (10) are connected with corresponding output ports of high-pressure air pumps (11) arranged on the tank body (1), the other corresponding output port of the high-pressure air pumps (11) is communicated with the inside of a backflushing air filling cavity (101) through a pipe body, an ultrafiltration core pipe (12) is arranged in each cylinder of the cylinder assembly (7), the outer ends of the ultrafiltration core pipes (12) are communicated with communicating pipes (9) arranged at the inner bottom of the tank body (1), and water distributors (2) are distributed at the tank openings of the tank body (1).

2. A biological filter for sewage treatment according to claim 1, wherein the filler layers comprise a first filler layer (3), a second filler layer (4) and a third filler layer (5).

3. A biological filter for sewage treatment according to claim 1, wherein the backflushing and inflating chamber (101) is formed inside the tank body (1) through a cylinder assembly (7), a bottom bracket screen plate (6).

4. A biological filter for sewage treatment according to claim 1, characterized in that the bottom end of each cylinder in said cylinder assembly (7) is connected to a sediment suction and discharge pipe (8) distributed in the tank body (1) through a pipe body.

5. The biological filter for sewage treatment according to claim 1, wherein the electric control valves are arranged at both ends of the communicating pipe (9), at the outer end of the sediment suction and discharge pipe (8) and at the outer end of the rubber hose (10).

6. A biological filter for sewage treatment according to claim 1, wherein one end of the communicating pipe (9) is provided with a back flushing water inlet (901), and the other end of the communicating pipe (9) is provided with a water outlet (902).