CN213506176U

CN213506176U - Membrane filtration aeration device

Info

Publication number: CN213506176U
Application number: CN202021948587.6U
Authority: CN
Inventors: 刘学; 肖力鹏; 沈佳冉; 薄彬彬; 屠旭江
Original assignee: Ningbo Shuiyi Film Technology Development Co ltd
Current assignee: Ningbo Shuiyi Film Technology Development Co ltd
Priority date: 2020-09-08
Filing date: 2020-09-08
Publication date: 2021-06-22
Anticipated expiration: 2030-09-08

Abstract

The utility model discloses an it is poor to overcome aeration systems's cloth gas homogeneity among the prior art to and mud causes the obstructed technical problem of aeration hole easily, provides a membrane filtration aeration equipment, include: the aeration main pipe assembly comprises a vertical connecting pipe and a horizontal connecting pipe, and one end of the vertical connecting pipe is connected with one end of the horizontal connecting pipe; the aeration branch pipe assembly comprises a branch pipe connecting pipe and an aeration branch pipe, one end of the branch pipe connecting pipe is connected with the other end of the horizontal connecting pipe, and aeration holes which are vertically upward are formed in the peripheral surface of the aeration branch pipe; the aeration branch pipe comprises a first bending section, a body and a second bending section in sequence, one end of the first bending section, which is far away from the body, is connected with the branch pipe connecting pipe through a connecting piece, the second bending section bends downwards, and the bottom of the second bending section is provided with a sludge discharge hole. The utility model discloses beneficial effect as follows: (1) the gas discharge resistance of each aeration hole in the device is the same, and the gas distribution of the device is uniform; (2) can realize self-cleaning of the blocking sludge.

Description

Membrane filtration aeration device

Technical Field

The utility model relates to a filtration system technical field especially relates to a membrane filters aeration equipment.

Background

The membrane filtering aeration device is a device for supplying oxygen to the microorganisms in the membrane pool, cleaning the surface of the membrane and controlling membrane pollution, and is important equipment in a membrane filtering system. When the conventional MBR aeration device is used for a long time, particularly in a use occasion with high sludge concentration, the aeration pipe is easy to accumulate sludge, and aeration holes are blocked, so that the aeration uniformity is influenced. Meanwhile, most of the conventional aeration devices adopt the membrane frame upright post as an aeration main pipe for conveying gas, so that gas distribution is uneven, pollutants on the surface of the membrane module cannot be swept and removed in time, the filtration efficiency is influenced, or the aeration quantity of a region with weak gas is required to be increased, and the energy consumption is increased.

Chinese patent with application number CN201210313896.X discloses a membrane unit aeration structure, which comprises an aeration main pipe and aeration branch pipes, and is characterized in that the middle of the aeration main pipe is vertically communicated with the middle of the aeration branch pipes, the two sides of the aeration main pipe adopt a cross opening mode, the aperture is 3-4 mm, the hole direction is inclined upwards by 45 degrees, the hole distance is 20-60 mm, and the aeration holes of the aeration branch pipes are distributed in two groups; the group spacing at the two sides of the membrane unit is 2 times of the hole spacing, and the group spacing at the middle of the membrane unit is 3 times of the aeration hole spacing.

The above patent can improve the condition of uneven gas distribution in the membrane bioreactor. The MBR aeration apparatus represented by the membrane unit aeration structure is used for a long time, and particularly used in a place with high sludge concentration, the aeration pipe is easy to accumulate sludge, and aeration holes are blocked, thereby affecting the aeration uniformity. Meanwhile, most of the conventional aeration devices adopt the membrane frame upright post as an aeration main pipe for conveying gas, so that gas distribution is uneven, pollutants on the surface of the membrane module cannot be swept and removed in time, the filtration efficiency is influenced, or the aeration quantity of a region with weak gas is required to be increased, and the energy consumption is increased.

Disclosure of Invention

The utility model discloses an it is poor to overcome aeration systems's cloth gas homogeneity among the prior art to and mud causes the obstructed technical problem of aeration hole easily, provides a membrane filtration aeration equipment, and the device can realize even cloth gas, can realize the self-cleaning to stopping up mud simultaneously.

In order to achieve the above purpose, the present invention adopts the following technical solution.

A membrane filtration aeration device comprising: the aeration main pipe assembly comprises a vertical connecting pipe and a horizontal connecting pipe, and one end of the vertical connecting pipe is connected with one end of the horizontal connecting pipe; the aeration branch pipe assembly comprises a branch pipe connecting pipe and an aeration branch pipe, one end of the branch pipe connecting pipe is connected with the other end of the horizontal connecting pipe, and aeration holes which are vertically upward are formed in the peripheral surface of the aeration branch pipe; the aeration branch pipe comprises a first bending section, a body and a second bending section in sequence, one end of the first bending section, which is far away from the body, is connected with the branch pipe connecting pipe through a connecting piece, the second bending section bends downwards, and the bottom of the second bending section is provided with a sludge discharge hole. In the operation process of the membrane filtration equipment, the sludge inevitably enters the interior of the aeration pipe through the aeration holes and is gradually hardened under the action of the gas with certain temperature so as to block the aeration pipe. The application provides a membrane filtration aeration device, in the using process of a membrane, when the aeration is intermittently stopped, sewage enters from an aeration pipe to soften the solidified sludge, and the softened sludge flows out of the aeration pipe from a sludge discharge hole under the pressure of gas during the re-aeration, so that the problem of sludge blockage is solved; in addition, the second bending section ensures that the sludge is discharged completely under enough pressure in the pipe after the aeration is restarted.

Preferably, the aeration branch pipe assembly comprises a first branch pipe assembly and a second branch pipe assembly, the horizontal connecting pipe comprises a first horizontal connecting pipe and a second horizontal connecting pipe, and the first horizontal connecting pipe, the second horizontal connecting pipe and the vertical connecting pipe are connected through a tee. This application adopts the symmetrical structure design of first branch pipe subassembly and second branch pipe subassembly, and adopts independent aeration to be responsible for, and the gas outgoing resistance in each aeration hole is the same in the device, and the device gas distribution is even.

Preferably, the number of the aeration holes is a plurality of and the aeration holes are arranged at intervals along the length direction of the body, and the bending directions of the first bending section and the second bending section are opposite. The first bending section has the function of avoiding sludge from flowing into the aeration main pipe during working, and the second bending section ensures that the sludge is discharged completely from the sludge discharge hole at the bottom of the second bending section under enough pressure in the pipe after the aeration is restarted.

Preferably, the other end of the vertical connecting pipe is provided with an aeration flange.

Preferably, the number of the aeration branch pipes is several and the aeration branch pipes are arranged at intervals along the length direction of the branch pipe connection pipe.

Preferably, the other end of the branch pipe connecting pipe is provided with a blank cap.

Preferably, the branch pipe connection pipe, the aeration flange, the vertical connection pipe and the horizontal connection pipe are all made of stainless steel or high molecular polymer.

To sum up, the utility model discloses following beneficial effect has: (1) the gas discharge resistance of each aeration hole in the device is the same, and the gas distribution of the device is uniform; (2) in the use process of the membrane, when the aeration is intermittently stopped, sewage enters from the aeration pipe to soften the solidified sludge, and the softened sludge flows out of the aeration pipe from the sludge discharge hole under the pressure of gas when the aeration is performed again, so that the problem of sludge blockage is solved.

Drawings

Fig. 1 is a schematic view of the present invention during installation.

Fig. 2 is an overall schematic view of the present invention.

Fig. 3 is a schematic view of the main pipe assembly for aeration in the present invention.

Fig. 4 is a schematic view of a first manifold assembly of the present invention.

Fig. 5 is a front view of the middle aeration branch pipe of the present invention.

Fig. 6 is an isometric view of a middle aeration branch pipe of the present invention.

In the figure:

1. the aeration pipe comprises an aeration main pipe component, 11, an aeration flange, 12, a vertical connecting pipe, 13, 90-degree elbows, 14, a tee joint, 15, a horizontal connecting pipe, 2, a first branch pipe component, 21, a branch pipe connecting pipe, 22, an external thread saddle joint, 23, a pipe hoop, 24, a blank cap, 25, an aeration branch pipe, 3, a second branch pipe component, 4, a stand column, 5, a membrane frame, 6, an aeration hole, 7 and a sludge discharge hole.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it is to be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on the orientations or positional relationships illustrated in the drawings, and are used merely for convenience of description and for simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "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; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Example (b):

as shown in fig. 1 to 6, a membrane filtration aeration apparatus includes: the aeration main pipe component 1 comprises a vertical connecting pipe 12 and a horizontal connecting pipe 15, and one end of the vertical connecting pipe is connected with one end of the horizontal connecting pipe; the aeration branch pipe assembly comprises a branch pipe connecting pipe 21 and an aeration branch pipe 25, one end of the branch pipe connecting pipe is connected with the other end of the horizontal connecting pipe, and aeration holes 6 which are vertically upward are arranged on the peripheral surface of the aeration branch pipe; the aeration branch pipe sequentially comprises a first bending section, a body and a second bending section, one end of the first bending section, which is far away from the body, is connected with the branch pipe connecting pipe through a connecting piece, and the second bending section is bent downwards; the aeration branch pipe assembly comprises a first branch pipe assembly 2 and a second branch pipe assembly 3, the horizontal connecting pipes comprise a first horizontal connecting pipe and a second horizontal connecting pipe, and the first horizontal connecting pipe, the second horizontal connecting pipe and the vertical connecting pipe are connected through a tee joint 14; the number of the aeration holes is a plurality of and the aeration holes are arranged at intervals along the length direction of the body, and the bending directions of the first bending section and the second bending section are opposite; the connection comprises an externally threaded saddle joint 22 and a pipe clamp 23; the other end of the vertical connecting pipe is provided with an aeration flange 11; the number of the aeration branch pipes is a plurality and the aeration branch pipes are arranged at intervals along the length direction of the branch pipe connecting pipe; the other end of the branch pipe connecting pipe is provided with a blank cap 24; the branch pipe connecting pipe, the aeration flange, the vertical connecting pipe and the horizontal connecting pipe are all made of stainless steel or high molecular polymer.

As shown in fig. 2, the aeration flange, the vertical connecting pipe and the horizontal connecting pipe are sequentially arranged from top to bottom, the horizontal connecting pipe comprises a first horizontal connecting pipe and a second horizontal connecting pipe from left to right, the first horizontal connecting pipe, the second horizontal connecting pipe and the vertical connecting pipe are connected through a tee, a 90-degree elbow 13 is arranged at the left end of the first horizontal connecting pipe and the right end of the second horizontal connecting pipe, the first horizontal connecting pipe is connected with the first branch pipe assembly, and the second horizontal connecting pipe is connected with the second branch pipe assembly. Taking the first branch pipe assembly as an example for structural explanation, as shown in fig. 4, the branch pipe connection pipe and the aeration branch pipe are sequentially arranged from left to right, the number of the aeration branch pipes is a plurality of, and the aeration branch pipes are arranged at intervals along the length direction of the branch pipe connection pipe, in this embodiment, the aeration branch pipes are arranged at equal intervals, the intervals of the aeration branch pipes can be adjusted according to the air volume requirements of different positions, the aeration branch pipes are sequentially provided with a first bending section from left to right, a body and a second bending section, in this embodiment, the first bending section is connected with the branch pipe connection pipe through an external thread saddle joint and a pipe hoop, and can also be fixedly connected with the branch pipe connection pipe through welding, the bending directions of the first bending section and the second bending section are opposite, the first bending section is bent upwards, the second bending section is bent downwards, a plurality of aeration holes are arranged on the body at intervals along the. As shown in figures 5 and 6, after the aeration branch pipe is installed, the section b of the aeration branch pipe is horizontally placed, the inner diameter of the aeration branch pipe in the embodiment is 10mm-30mm, the aeration holes are formed in the middle of the upper side of the section b and vertically upward, the number of each aeration hole is 2-18, the diameter of each aeration hole is 3mm-10mm, the second bending section is vertically downward, the length delta h is 2-5 times of the inner diameter of the aeration branch pipe, and the bottom of the second bending section is opened to form a sludge discharge hole 7 which plays a role in discharging sludge. As shown in figure 1, the aeration device is fixed at the bottom of the membrane frame 5 by U-shaped bolts and covers the whole bottom of the membrane curtain. In the operation process of the membrane filtration equipment, the sludge inevitably enters the interior of the aeration pipe through the aeration holes and is gradually hardened under the action of the gas with certain temperature so as to block the aeration pipe. When the system enters an aeration stop period, the treated water flows into the aeration branch pipes and the main pipe along the upper and lower openings of the aeration branch pipes to soften sludge, and after the aeration is started again, the sludge is pushed to the tail ends of the aeration branch pipes under the action of gas purging and is discharged through the sludge discharge holes. Thereby achieving self-cleaning of the blockage.

Claims

1. A membrane filtration aeration apparatus, comprising:

the aeration main pipe assembly comprises a vertical connecting pipe and a horizontal connecting pipe, and one end of the vertical connecting pipe is connected with one end of the horizontal connecting pipe;

the aeration branch pipe assembly comprises a branch pipe connecting pipe and an aeration branch pipe, one end of the branch pipe connecting pipe is connected with the other end of the horizontal connecting pipe, and aeration holes which are vertically upward are formed in the peripheral surface of the aeration branch pipe;

the aeration branch pipe sequentially comprises a first bending section, a body and a second bending section, one end of the first bending section, which is far away from the body, is connected with the branch pipe connecting pipe through a connecting piece, and the second bending section is bent downwards.

2. The membrane filtration aeration apparatus according to claim 1, wherein the aeration leg assembly comprises a first leg assembly and a second leg assembly, the horizontal connection pipes comprise a first horizontal connection pipe and a second horizontal connection pipe, and the first horizontal connection pipe, the second horizontal connection pipe and the vertical connection pipe are connected by a tee.

3. The membrane filtration aeration apparatus according to claim 1, wherein the number of aeration holes is several and the aeration holes are arranged at intervals along the length direction of the body, and the bending directions of the first bending section and the second bending section are opposite.

4. A membrane filtration aeration device according to claim 1, 2 or 3, wherein the other end of said vertical adapter is provided with an aeration flange.

5. A membrane filtration aeration apparatus according to claim 1, 2 or 3, wherein the number of aeration branch pipes is several and arranged at intervals along the length direction of the branch pipe connection pipe.

6. A membrane filtration aeration device according to claim 1, 2 or 3, wherein the other end of said branch pipe connection is provided with a blank cap.

7. The membrane filtration aeration apparatus according to claim 4, wherein the branch pipe connection, the aeration flange, the vertical connection pipe, and the horizontal connection pipe are made of stainless steel or high molecular polymer.