CN206778199U - A kind of hollow plate film assembly that can be cleaned at random - Google Patents

Abstract

The utility model discloses a hollow flat-plate membrane assembly capable of random cleaning, which comprises an assembly frame and a flat-plate diaphragm assembly. The assembly frame is a rigid structure for fixing the flat-plate diaphragm assembly and an aeration mechanism. The diaphragm assembly includes a flat diaphragm (10) arranged at intervals, an upper plug and a lower plug integrally formed with the flat diaphragm, the flat diaphragm is provided with a brush (9) capable of cleaning the surface of the flat diaphragm ), the two ends of the brush are arranged on the supporting bracket (12), and the supporting bracket can move up and down on the component frame. It can randomly remove the adsorbate on the flat membrane in time, keep the surface of the flat membrane clean, improve the filtration efficiency, do not need to stop for backwashing, reduce the number of backwashing, increase the working time and improve the work efficiency, and solve the problem of the flat membrane module Problems such as difficult cleaning and low cleaning efficiency during operation have effectively improved the service life and reliability of the flat-panel membrane bioreactor, and improved the water flux.

Description

A hollow flat-plate membrane module capable of random cleaning

technical field

The utility model relates to a water treatment device, in particular to various types of hollow flat membrane modules.

Background technique

As a new type of high-efficiency sewage treatment technology, the flat membrane bioreactor has become an indispensable treatment technology for domestic sewage, especially industrial wastewater and extreme environmental wastewater treatment.

At present, the membrane bioreactor (MBR) is widely used in membrane bioreactors. MBR has the following main characteristics: high treatment efficiency, good effluent quality, compact equipment, small footprint, high strength, large water flux, long life, Low energy consumption per unit, easy to realize automatic control, simple operation and management, and low operation and maintenance costs. However, because the flat membrane uses external pressure and internal suction filtration during use, it is easy to cause organic colloids and sludge to form a layer of film on the surface of the flat membrane. The current method is basically to use aeration to drive water flow to wash For cleaning, the aeration rate needs to be controlled in the MBR process, otherwise it is easy to cause too high dissolved oxygen. This method provides a relatively small water flow rate, and the flat diaphragm is placed vertically, so the water flow can only wash the middle part and affect the surface. The cleaning effect of colloidal substances is very small. In addition, backwashing with compressed air and high-pressure filtered water is also difficult to remove substances such as colloidal substances, bacteria and sludge, especially if a polluted film layer has been formed, the removal effect is even worse. Moreover, it is necessary to stop the filtration for backwashing, which wastes time and purifies water; it will also cause a decrease in membrane flux, a decrease in processing capacity, and an increase in operating costs. The cleaning effect of the present invention is very obvious when applied to various water treatment filtering devices such as solid-liquid separation and oil-water separation.

Utility model content

Aiming at the problems existing in the filtration and cleaning of the hollow flat membrane in the prior art, the utility model provides a method that can randomly clean the flat membrane during filtration without special short-time aeration or backwashing with air and water. , a hollow flat-panel membrane module that can ensure the filtering effect of the flat-panel membrane.

The technical solution to the technical problem to be solved by the utility model is: the hollow flat membrane module that can be cleaned randomly includes a module frame and a flat membrane module, and the module frame is used to fix the flat membrane module and the aeration mechanism Rigid structure, the flat membrane assembly includes flat diaphragms arranged at intervals, an upper plug and a lower plug integrated with the flat diaphragm, and the flat diaphragm is provided with hair that can clean the surface of the diaphragm Brush, the two ends of the brush are arranged on the supporting bracket, and the supporting bracket can move up and down on the component frame.

There are many structural modes for the lifting and lowering movement of the support bracket on the component frame, such as gear transmission, chain transmission, cylinder transmission, hydraulic transmission and screw transmission, among which screw transmission is preferred.

There are two main types of screw drive:

1. One is that screw rods are fixed on the four corners of the support frame, and the upper part of the screw rod meshes with the nuts fixed on the support frame in the component frame. The motor of the support frame drives the gear steering gear through the worm reducer to convert the torque The force is transmitted to the elevator to drive a platform composed of four turbine screws to move up and down synchronously with the support bracket. The brush on the support bracket and the surface of the flat diaphragm perform reciprocating mechanical friction to scrub the surface of the flat diaphragm.

2. The other is to set bearings on the four corners of the supporting bracket. The bearings are supported on the guide rails fixedly connected with the component frame. The upper and lower ends of the guide rails are respectively set on the surface of the flat diaphragm for reciprocating mechanical movement. Because The flat membrane adopts an asymmetric membrane, and the surface membrane is coated with a very thin microporous membrane. The pollutants trapped on the surface are basically left on the surface. The pollutants adsorbed on the membrane surface are removed by the brush and the friction on the surface of the flat membrane in time. Removing pollutants can effectively prevent pollutants from forming a polluted film layer on the surface of the flat membrane. The high-purity Al ₂ O ₃ composite membrane structure makes the flat membrane have high mechanical strength, strong pressure bearing capacity, good chemical stability, and uniform porosity distribution. Long service life, high economic efficiency, etc., are very suitable for mechanical friction cleaning on the surface with brush rollers. This invention solves the problems of difficult cleaning and low cleaning efficiency during the operation of flat membrane modules, and effectively improves the use of flat membrane bioreactors. Life and reliability, improve the water flux, reduce the number of backwashing, save backwashing time, increase working time, and improve work efficiency.

Compared with the prior art, the utility model has the following characteristics:

1. It can randomly remove the adsorbate on the flat membrane in time, keep the surface of the flat membrane clean, improve the filtration effect and efficiency,

2. There is no need to stop the machine for backwashing, which reduces the number of backwashing times, increases working hours and improves work efficiency.

3. It solves the problems of difficult cleaning and low cleaning efficiency during the operation of the flat membrane module, effectively improves the service life and reliability of the flat membrane bioreactor, and improves the water flux.

4. The transmission device and power device of the present invention do not need to pass through water, and do not need to use corrosion-resistant materials and do waterproof treatment.

Description of drawings

Fig. 1 is the main sectional structural schematic diagram of the first transmission mode of the present utility model,

Fig. 2 is a left view structural diagram of the first transmission mode of the present invention,

Fig. 3 is a schematic diagram of the cross-sectional structure of A-A in Fig. 2,

Fig. 4 is a three-dimensional structural schematic diagram of the first transmission mode of the present utility model,

Fig. 5 is a schematic diagram of the main sectional structure of the second transmission mode of the utility model.

In the figure, 1, lifting mechanism 2, worm screw rod 3, gear converter 4, worm reducer 5, motor 6, transmission rod I 7, transmission rod II 8, support frame 9, brush 10, flat diaphragm 11 , Flat membrane module 12, support bracket 13, upper position sensor 14, lower position sensor 15, guide rail 16, bearing.

detailed description

Embodiment 1, in Fig. 1, Fig. 2, Fig. 3 and Fig. 4, the hollow flat-panel membrane assembly that can be cleaned randomly includes an assembly frame and a flat-panel membrane assembly, and the assembly frame is used to fix the flat-panel membrane assembly and The rigid structure of the aeration mechanism, the flat membrane module includes flat membranes 10 (including organic and inorganic ceramics and other flat membranes) arranged at intervals, an upper plug and a lower plug integrated with the flat membrane, and the assembly A support frame 8 is arranged on the upper part of the frame, and the support frame is installed above the flat membrane module 11. The support frame is provided with a lifting mechanism 1, and the lifting mechanism is equipped with a turbine screw 2 respectively, and the rotation of the lifting mechanism drives the turbine screw. 2. A gear converter 3 is arranged in the middle of the up and down movement. A motor 5 and a worm gear reducer 4 are arranged between the two gear converters. Supporting brackets 12 are arranged on both sides of the flat membrane module 11. The bottom of the worm screw rod is Lan head and support bracket 12 are fixedly connected. Action transmission: The motor 5 converts the torque and power through the worm reducer 4 and then distributes it to the gear converter 3. The gear converter is connected to the worm screw through the transmission rod Ⅱ7, and connected to the worm reducer 4 through the transmission rod Ⅰ6. Go to the lifting mechanism 1, and finally put on the turbine screw rods 2, so that the four turbine screw rods 2 move up and down synchronously, and drive the supporting bracket to move up and down. Depending on the height of the flat plate diaphragm, an upper position sensor 13 and a lower position sensor 14 are arranged on the component frame, and the upper position sensor 13 and the lower position sensor 14 can control the moving distance of the supporting bracket by contacting the supporting bracket. A hair brush 9 is arranged between each of the flat diaphragms 10, and the two ends of the hair brush are fixed on the support frame 12, and the size of the hair brush is larger than the gap size of the concealed flat plate diaphragm, and the support frame 12 moves up and down. Drive the brush to fix the flat diaphragm 10 and fix one end of the turbine screw. When the flat membrane module is placed vertically, move up and down along with the screw nut to scrub the flat membrane; when the flat membrane module is placed horizontally, move left and right together with the screw nut to scrub the flat membrane; the shape of the cut surface of the brush bracket profile can be Composed of metal materials such as angle steel, square steel, channel steel, aluminum profiles or other hard materials, its scrubbing efficiency is 30-90% higher than traditional compressed air or water recoil, the effect is more obvious, and the flux lasts longer after cleaning. The water flux is increased by 10%-100%. It can be cleaned without stopping the filtration, which increases the effective working time. The frequency of brushing can be adjusted according to the actual situation. This device can completely replace the traditional water recoil and air recoil cleaning devices. Described hairbrush adopts material to have hard hairs such as various organic materials such as nylon, stainless steel wire, abrasive wire or soft hairs such as pig velvet, wool. The center of the brush is formed by winding 2-3 stainless steel wires. One end of the brush has a closed loop, and when it is connected to the cleaning brush bracket, it only needs to connect the steel wire in the center to penetrate the closed loop; the other end has a bolt, and when it is fixed to the bracket, only a nut is needed to fix it, and the brush can be adjusted Make sure the brush tension is tight. The brushes are fixed on the square bracket and installed in sequence corresponding to the center of the flat plate diaphragm; the brush center rod above uses a soft material to fix the brushes, so that the two ends of the brushes can be fixed. This device also can adopt the central bar to be the shape of a rod or bar made of hard material, such as metal and hard plastic, and such a hard brush can only fix one side. The upper position sensor and the lower position sensor are mechanical, electronic or magnetic induction.

Embodiment 2, as shown in Figure 5, is provided with the elongated hairbrush 9 that soft hair or bristles are made at intervals on the support bracket that is provided with crossbeam in the middle, utilizes hairbrush to be on the surface of regular flat diaphragm 10 Carry out mechanical reciprocating movement to scrub the surface of the flat diaphragm. Guide rails 15 are provided around the frame of the module, and bearings 16 are provided on the support bracket 12. The bearings can move on the guide rails, and nuts are provided on the beams. A screw is fixed in the center of the component frame, and a motor is installed on the top of the component. The motor drives the screw to rotate, so that the nut on the screw drives the supporting bracket to reciprocate up and down, and real-time monitoring of both sides of the flat diaphragm. cleaning. The pollutants on the surface of the flat diaphragm are removed in time. The cross-sectional shape of the brush is circular, oval, waist-shaped, square, rectangular, etc., and the center of the brush is formed by winding 2-3 stainless steel wires.

Claims (4)

1. A hollow flat-panel membrane module that can be cleaned at random, it includes an assembly frame and a flat-panel membrane assembly, and the assembly frame is a rigid component for fixing a flat-panel membrane assembly and an aeration mechanism and includes flat-panel membranes arranged at intervals (10) The upper plug and the lower plug integrated with the flat diaphragm are characterized in that: the flat diaphragm is provided with a brush (9) capable of cleaning the surface of the flat diaphragm, and the brush The two ends are arranged on the support bracket (12), and the support bracket can move up and down on the component frame. 2. A hollow flat-plate membrane module capable of random cleaning according to claim 1, characterized in that: screws (1) are fixed on the four corners of the support bracket (12), and the upper part of the screw is fixed to the assembly The nuts on the support frame in the frame are meshed, and the motor of the support frame drives the gear steering gear through the worm gear reducer to transmit the torque to the elevator to drive a platform composed of four worm screw rods to move up and down synchronously with the support frame. The brush on the supporting bracket performs reciprocating mechanical friction with the surface of the flat diaphragm, and an upper position sensor (13) and a lower position sensor (14) are respectively arranged on the component frame. 3. A hollow flat-plate membrane module capable of random cleaning according to claim 1, characterized in that: bearings (16) are arranged on the four corners of the support bracket, and the bearings are supported on guide rails fixedly connected with the module frame (15), upper and lower ends of the guide rail are respectively provided with an upper position sensor and a lower position sensor, a crossbeam is arranged between the support brackets, nuts are fixed on the crossbeam, and a screw rod is arranged in the component frame , the upper end of the screw rod is connected with the gearbox fixed on the upper end of the component frame, the gearbox is connected with the motor, and the lower end of the screw rod matches with the nut fixedly arranged on the beam. 4. The random-cleanable hollow flat-plate membrane module according to claim 2 or 3, characterized in that: the upper position sensor and the lower position sensor are mechanical, electronic or magnetic induction.