CN108144448A - A kind of collecting system for rotary film device - Google Patents

Abstract

The invention discloses it to include：Catchment membrane module, is arranged on the collector tube on the membrane module periphery of catchmenting, the hollow axle with collector tube perforation, and the hollow axle drives its rotation by driving mechanism, membrane module rotation of catchmenting described in the hollow axle drive；One end of the hollow axle is connected to out on conductance pipe, it is described go out conductance pipe be connected with suction pump.The system structure of the present invention is compact, runner is unimpeded, membrane efficiency is high, installation is replaced conveniently.

Description

A water collection system for rotary membrane equipment

technical field

The invention relates to the technical field of water purification, in particular to a water collection system for a rotary membrane device.

Background technique

Membrane separation technology has developed rapidly in recent years. From microfiltration, ultrafiltration, nanofiltration to reverse osmosis, it has been widely used in sewage treatment, drinking water purification, seawater desalination, industrial separation and other fields. At present, the preparation technology of membrane materials (including polymer organic membranes and inorganic membranes) is quite mature, but the industrial application of membranes is relatively backward. For example, the membrane components of flat membranes and hollow fiber membranes of polymer materials are static. Cross-flow filtration is formed by aeration; inorganic tubular membranes mainly rely on pumps to increase the flow rate of the liquid to be treated to form cross-flow filtration. The application of these membranes is just a simple amplification of laboratory technology. The field of application is also limited.

Contents of the invention

The technical problem to be solved by the present invention is to provide a water collection system for rotary membrane equipment, which has compact structure, smooth flow channel, high membrane efficiency and convenient installation and replacement.

In order to solve the above technical problems, the present invention provides a water collection system for rotary membrane equipment, which includes: a water collection membrane module, a liquid collection pipe arranged around the water collection membrane module, and the liquid collection A hollow rotating shaft through which the pipe runs, and the hollow rotating shaft is driven to rotate by a driving mechanism, and the hollow rotating shaft drives the water collection membrane assembly to rotate;

One end of the hollow rotating shaft is connected to an outflow conduit, and the outflow conduit is connected to a water pump.

In a preferred embodiment of the present invention, it further includes that the water-collecting membrane assembly includes several water-collecting membrane components, and one end of the water-collecting membrane components is provided with a liquid outlet hole and a water-collecting chamber, so The liquid outlet hole is connected with the water collection chamber, and the water collection chambers of each of the water collection membrane components are connected together to form a water flow channel, and the water collection chambers arranged at both ends of the water collection membrane assembly Connected with the liquid collection pipe, the liquid collection pipe is connected with the hollow shaft; the water collection membrane module is fixed around the hollow shaft to form a rotary water collection membrane turntable, and the driving mechanism passes through the hollow shaft The water collecting membrane module is driven to perform submerged or semi-submerged rotation under water.

In a preferred embodiment of the present invention, it further includes that a liquid inlet hole is opened on the hollow rotating shaft, and the liquid inlet hole communicates with the liquid collecting pipe.

In a preferred embodiment of the present invention, it further includes that the water-collecting membrane component is provided with a mounting head, and when the water-collecting membrane component is installed, the mounting head is inserted into the mounting hole of the fixing member, There is a gap of 0.2-1.5 cm between each of the water-collecting membrane components.

In a preferred embodiment of the present invention, it further includes that the water collection membrane component adopts a hollow cavity type or surface diversion groove type support structure, and ultrafiltration or microfiltration membranes are welded on both sides of the support structure piece.

In a preferred embodiment of the present invention, it further includes that the support structure is an integral injection molded part.

In a preferred embodiment of the present invention, it further includes that one end of the hollow rotating shaft is connected with a rotary joint, and is connected to the outflow conduit through the rotating joint, and the other end of the hollow rotating shaft is in a closed state.

In a preferred embodiment of the present invention, it further includes that both ends of the hollow rotating shaft are fixed on the bearing seat.

In a preferred embodiment of the present invention, it further includes a liquid collecting pipe protective cover, and the liquid collecting pipe is installed inside the liquid collecting pipe protective cover.

In a preferred embodiment of the present invention, it further includes that reinforcing ribs are provided on both sides of the water collection membrane module.

Technical effect of the present invention:

1. The water-collecting membrane component in the present invention adopts a hollow cavity type or a surface diversion groove type support structure, and the negative pressure is evenly distributed, eliminating the filtration dead zone and improving the membrane efficiency.

2. The water-collecting membrane components are easy to disassemble, firm and reliable. When one or several water-collecting membrane components are damaged and need to be replaced, there is no need to disassemble the entire set of water-collecting membrane components. The damaged membrane group can be directly repaired after the fasteners are removed. Yuan to replace.

3. The water-collecting membrane module is equipped with a liquid outlet hole and a water-collecting chamber, and no additional water-collecting pipe is required. The integrated design saves space and reduces costs.

4. Each water-collecting membrane component has a certain distance and the rotating water-collecting membrane turntable is a polygonal structure, so that the water-collecting membrane turntable forms a strong scouring effect when the water-collecting membrane turntable is in the submerged program-controlled rotation operation, prevents the accumulation of filter layers, and improves the stable membrane flux. , by controlling the operating states such as the rotational speed and the pumping stop cycle, the surface of the membrane can generate sufficient shear force, centrifugal force and filtrate turbulence, etc., to achieve the ideal cross-flow operation and eliminate the effect of concentration polarization.

5. The water collection system used for rotary membrane equipment has a compact structure and smooth flow channels, which is convenient for on-line perfusion cleaning and realizes the integration of equipment.

6. Through the submerged program-controlled rotating operation of the water collection membrane module, the ideal cross-flow operation and the elimination of concentration polarization effect are achieved.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is a schematic structural view of the water collection membrane component of the present invention;

Fig. 3 is a schematic structural view of a water-collecting membrane turntable composed of a water-collecting membrane module of the present invention;

Explanation of symbols in the figure:

1 Water collection membrane assembly, 2 Liquid collection pipe, 3 Hollow shaft, 4 Liquid inlet hole, 5 Rotary joint, 6 Outflow conduit, 7 Water pump, 8 Driving mechanism, 9 Water collection membrane component, 10 Liquid outlet hole, 11 Water collecting cavity, 12 installation heads, 13, fasteners, 14 fixing parts, 15 reinforcing ribs, 16 protective covers for liquid collecting pipes.

Detailed ways

The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and implement it, but the examples given are not intended to limit the present invention.

Example

An embodiment of the water collection system of the present invention, as shown in Figures 1-3, the water collection system in this implementation mainly includes: a water collection membrane module 1, a liquid collection pipe 2, a hollow rotating shaft 3, a rotary joint 5, an outflow The conduit 6 and the water pump 7 are provided with a liquid collection pipe 2 around the water collection membrane assembly 1, and the liquid collection pipe 2 is installed inside the liquid collection pipe protective cover 16. The hollow rotating shaft 3 is connected with the above liquid collection pipe 2, and the above hollow The rotating shaft 3 is driven to rotate by a drive mechanism 8, the above-mentioned driving mechanism 8 can be a motor, and the above-mentioned hollow rotating shaft 3 drives the entire above-mentioned water collection membrane assembly 1 to rotate; and, one end of the above-mentioned hollow rotating shaft 3 is connected to the outlet conduit 6, the above-mentioned Outflow conduit 6 is connected with water pump 7 .

The water collection membrane module 1 is fixed around the hollow rotating shaft 3 to form a rotating water collection membrane turntable. In this embodiment, the water collection membrane turntable can be a polygonal structure, and it can also be a circular structure in other embodiments. The driving mechanism 8 drives the water collection membrane module 1 to rotate submerged or semi-submerged underwater through the hollow rotating shaft 3 .

Specifically, in this embodiment, the above-mentioned water-collecting membrane assembly 1 includes several water-collecting membrane components 9, one end of the above-mentioned water-collecting membrane component 9 is provided with a liquid outlet hole 10 and a water-collecting chamber 11, and the above-mentioned liquid outlet The holes 10 communicate with the above-mentioned water-collecting chambers 11, and the water-collecting chambers 11 of each of the above-mentioned water-collecting membrane components 9 are connected together to form a water flow channel, and the above-mentioned water-collecting chambers 11 arranged at both ends of the above-mentioned water-collecting membrane assembly 1 are connected to the The above-mentioned liquid collecting pipe 2 is connected, and the above-mentioned liquid collecting pipe 2 is connected with the above-mentioned hollow rotating shaft 3 . The water-collecting membrane module is provided with a liquid outlet hole 10 and a water-collecting chamber 11, and no additional water-collecting pipe is required, and the integrated design saves space and reduces costs.

The liquid collecting pipe 2 and the hollow rotating shaft 3 are connected in such a way that: the hollow rotating shaft 3 is provided with a liquid inlet hole 4 , and the liquid inlet hole 4 is connected with the liquid collecting pipe 2 .

The installation method of the above-mentioned water-collecting membrane unit 9: the above-mentioned water-collecting membrane unit 9 is provided with an installation head 12, and when the above-mentioned water-collection membrane unit 9 is installed, the above-mentioned installation head 12 is inserted into the installation hole of the fixing member 14. The water collection membrane unit 9 is easy to disassemble, firm and reliable. When a single or several water collection membrane units are damaged and need to be replaced, there is no need to disassemble the entire set of water collection membrane units. After taking off the fasteners, the damaged membrane unit can be directly repaired Make a replacement.

The water collection chamber is slightly higher than the main body of the supporting structure, so that each water collection membrane component forms a certain distance when installed, and the distance range is 0.2 to 1.5cm. Each water collection membrane component has a certain distance and a rotating water collection membrane turntable It is a polygonal structure, so that when the water collection membrane turntable is in the submerged program-controlled rotation operation, it forms a strong scouring effect, prevents the accumulation of the filter layer, and improves the stable membrane flux. Shear force, centrifugal force and filtrate turbulence, etc., to achieve ideal cross-flow operation and eliminate concentration polarization effect.

The above-mentioned water-collecting membrane component 9 adopts a hollow cavity type or surface diversion groove type support structure, and ultrafiltration or microfiltration membranes are welded on both sides of the above-mentioned support structure, and the above-mentioned support structure is an integrated injection molded part. The water collection membrane component 9 adopts a hollow cavity type or a surface diversion groove type support structure, the negative pressure is evenly distributed, the dead zone of filtration is eliminated, and the membrane efficiency is improved. Moreover, reinforcing ribs 15 are provided on both sides of the water-collecting membrane module 1 , and the water-collecting membrane module 1 is reinforced by the reinforcing ribs 15 .

One end of the hollow rotating shaft 3 is connected with a rotary joint 5, and is connected to the outlet conduit 6 through the rotary joint 5, and the other end of the hollow rotating shaft 3 is in a closed state. Moreover, both ends of the above-mentioned hollow rotating shaft 3 are fixed on the bearing housing.

In specific use, the water pump is turned on to generate a sufficient pressure difference on both sides of the water-collecting membrane component. The liquid hole enters the water collection chamber, and the water collection chambers of multiple membrane components are connected to form a water flow channel to flow into the liquid collection pipe, and finally flow into the hollow shaft through the liquid inlet hole, and then discharge through the outlet conduit and the pump. While filtering, the driving mechanism drives the hollow rotating shaft to rotate, thereby driving the entire water collection membrane turntable to rotate, and the membrane separation is realized by means of cross-flow filtration.

The water collection system can be backwashed in the necessary occasions and time periods during the specific application process, and the clean water or cleaning liquid can be reversely pumped into the hollow shaft through the standby conduit or the suction direction of the water pump, and then enter the liquid collection through the liquid inlet hole The pipe and the water collection chamber are then introduced into the cavity of the water collection membrane component through the liquid outlet hole, so as to realize the cleaning of the water collection membrane component and keep the surface of the membrane component clean.

The above-mentioned embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or transformations made by those skilled in the art on the basis of the present invention are all within the protection scope of the present invention. The protection scope of the present invention shall be determined by the claims.

Claims (10)

1. A water collection system for rotary membrane equipment, characterized in that it comprises: a water collection membrane module, a liquid collection pipe arranged on the periphery of the water collection film assembly, a hollow pipe connected with the liquid collection pipe A rotating shaft, the hollow rotating shaft is driven to rotate by a driving mechanism, and the hollow rotating shaft drives the water collection membrane assembly to rotate; One end of the hollow rotating shaft is connected to an outflow conduit, and the outflow conduit is connected to a water pump; The water-collecting membrane assembly is fixed around the hollow rotating shaft to form a rotating water-collecting membrane turntable, and the driving mechanism drives the water-collecting membrane assembly to rotate submerged or semi-submerged underwater through the hollow rotating shaft. 2. The water collection system for rotary membrane equipment according to claim 1, wherein the water collection membrane module includes several water collection membrane components, and one end of the water collection membrane component is provided with A liquid outlet hole and a water collection chamber, the liquid outlet hole is connected with the water collection chamber, and the water collection chambers of each of the water collection membrane components are connected together to form a water flow channel, and are arranged in the water collection chamber The water collection chambers at both ends of the membrane module are connected to the liquid collection pipe, and the liquid collection pipe is connected to the hollow rotating shaft. 3 . The water collection system for rotary membrane equipment according to claim 2 , wherein a liquid inlet hole is opened on the hollow rotating shaft, and the liquid inlet hole communicates with the liquid collection pipe. 4 . 4. The water collection system for rotary membrane equipment according to claim 2, characterized in that, the water collection membrane component is provided with a mounting head, and when the water collection membrane component is installed, the installation The head is inserted into the installation hole of the fixture, and there is a gap of 0.2-1.5 cm between each of the water-collecting membrane components. 5. The water collection system for rotary membrane equipment according to claim 2, wherein the water collection membrane component adopts a hollow cavity or surface diversion groove support structure, and in the support structure Ultrafiltration or microfiltration membranes are welded on both sides. 6 . The water collection system for rotary membrane equipment according to claim 5 , wherein the support structure is an integral injection molded part. 7 . 7. The water collection system for rotary membrane equipment according to claim 1, wherein one end of the hollow rotating shaft is connected with a rotary joint, and is connected to the outflow conduit through the rotary joint, and the The other end of the hollow rotating shaft is in a closed state. 8 . The water collection system for rotary membrane equipment according to claim 7 , wherein both ends of the hollow rotating shaft are fixed on bearing seats. 9 . The water collection system for rotary membrane equipment according to claim 1 , further comprising a protective cover for a liquid collection pipe, and the liquid collection pipe is installed inside the protective cover for the liquid collection pipe. 10 . 10. The water collection system for rotary membrane equipment according to claim 1, characterized in that reinforcement ribs are provided on both sides of the water collection membrane module.