A new type of integrated filtration device

Abstract

The present invention discloses a novel integrated filtering device. The device includes a housing, a diaphragm, a clear water pipe, and a stirrer. The housing is horizontally arranged, and a water inlet, a water outlet, and a clear water pipe orifice are respectively provided above, below, and at one end of the housing. The diaphragms are stacked layer by layer and are all erected in the housing. Each diaphragm passes through the clear water pipe and the stirring rod of the stirrer. Holes are provided on the clear water pipe at the places where it contacts the diaphragms, so as to introduce the filtered clear liquid into the clear water pipe. One end of the clear water pipe is placed outside the housing through the clear water pipe orifice. The present invention relates to a novel installation and layout form and a novel filter structure, which overcome the problems of uneven flow velocity on the membrane surface in the prior art, easy impurity deposition, complex system structure, huge energy consumption, etc.

Description

Technical Field

[0001] The present invention relates to a novel integrated filtration device, which is mainly applicable to water treatment fields such as landfill leachate, wastewater from sewage treatment plants, and industrial wastewater. Background Art

[0002] At present, membrane filtration devices at home and abroad all increase the flow velocity on the membrane surface by adding a circulation pump to reduce deposition and fouling. Moreover, the existing membrane filtration device systems have complex structures and consume huge amounts of energy. The above problems all restrict the application fields of membrane filtration in engineering. Summary of the Invention

[0003] In order to overcome the problems existing in the existing filters, such as uneven flow velocity on the membrane surface, easy impurity deposition, complex system structure, and huge energy consumption, the present invention provides a novel integrated filtration device.

[0004] The technical solution of the present invention is as follows:

[0005] A novel integrated filtration device includes a housing, membrane sheets, a clear water pipe, and a stirrer; the housing is horizontally arranged, and an inlet, an outlet, and a clear water pipe orifice are respectively provided above, below, and at one end of the housing. The membrane sheets are stacked layer by layer and vertically placed in the housing. Each membrane sheet passes through the clear water pipe and the stirring rod of the stirrer. Small holes are provided on the clear water pipe at the places where it contacts the membrane sheets to introduce the filtered clear liquid into the clear water pipe. One end of the clear water pipe is placed outside the housing through the clear water pipe orifice.

[0006] Furthermore, the device does not require an externally added circulation pump.

[0007] Furthermore, the stirring rod passes through the centers of multiple membrane sheets. The stirring rod is a linear same-layer stirring rod that can stir the water flow in both forward and reverse rotations. Further, the body of the stirring rod is linearly designed, and a plurality of plate-shaped blades are evenly distributed on the circumference of the body. The included angles between two adjacent plate-shaped blades are the same, and each plate-shaped blade is placed along the length direction of the body.

[0008] Furthermore, the membrane sheet includes two ultrafiltration membrane sheets and a water guide cloth therebetween, forming a sandwich-type membrane sheet; the shape of the membrane sheet is square; four clear water pipe holes and one stirring rod hole are provided on the membrane sheet. The clear water pipe holes are located at the four corners of the membrane sheet, and the stirring rod hole is located at the center of the membrane sheet. Further, the small holes are provided on the clear water pipe at the clear water pipe holes where it contacts the water guide cloth. The water guide cloth is designed with increased thickness.

[0009] Furthermore, the stirrer includes a motor and a reducer outside the housing, and the stirring rod horizontally extending into the housing.

[0010] Furthermore, the device is an independent unit and can operate independently or in series connection.

[0011] Further, the clean water pipe orifice is arranged at the top cover of the filtering device.

[0012] Through structural design, the present invention directly arranges the stirrer at the center of the membrane, adopts forward and reverse rotation stirring to clean the membrane surface by disturbing it, and at the same time, due to the action of centrifugal force, pollutants are thrown to the outer wall, away from the surface of the membrane, reducing fouling and scaling on the membrane surface. In addition, the device of the present invention adopts a separate membrane operation design and is used in parallel, increasing the treatment capacity, not interfering with each other, and improving the operation efficiency of the equipment.

[0013] The present invention overcomes the problems existing in the existing filters, such as uneven flow velocity on the membrane surface, easy impurity deposition, complex system structure, and huge energy consumption. Specifically, the beneficial effects of the present invention are as follows:

[0014] 1. The water circulation and the membrane are designed into an integrated structure, and a water circulation stirring device is arranged in the middle of the membrane. By mechanical agitation, the water flow velocity is increased to a set value, and a fast-flowing water flow is formed on the membrane surface, which can carry away the deposits on the membrane surface and reduce fouling on the membrane surface.

[0015] Due to the independent design, each filtering device can operate independently. By connecting in series, the redundancy of the equipment is improved, and equipment failure shutdown caused by the shutdown of the whole set of equipment for maintenance is avoided.

[0016] 2. Through optimization, a thickened water guide cloth is selected to increase the flow channel width of the clear liquid in the membrane, which can greatly improve the water outlet rate.

[0017] 3. The interval between the membranes is increased, and the disturbance kinetic energy is large, further improving the fouling resistance. The SS operating concentration is more than 50 times that of the original equipment.

[0018] 4. The single-membrane stacking design avoids replacing the whole set of membranes, membrane shells, etc., reduces the number of membrane sheets to be replaced, and reduces the operation cost.

[0019] 5. The installation is fast and simple. Each device is an independent operating unit, without a huge operating system for the device, and can be used immediately after connecting to water.

[0020] 6. Through the central stirrer, the water flow is stirred in forward and reverse directions to achieve the rinsing effect. When rotating and stirring, centrifugal force will also be generated, throwing impurities to the edge, reducing the amount of impurities on the membrane surface, improving the water outlet, reducing the membrane surface pollution. Therefore, the circulation pump can be cancelled and it can still be used normally. After cancelling the circulation pump, the energy consumption is also greatly reduced. Description of the Drawings

[0021] Figure 1 is the overall structure diagram of the device of the present invention;

[0022] Figure 2It is the diaphragm structure diagram in the device of the present invention;

[0023] Figure 3 It is the schematic diagram of diaphragm installation in the device of the present invention;

[0024] Figure 4 It is the schematic diagram of the stirring rod in the device of the present invention;

[0025] In the figure: 1. Stirrer; 2. First clear water pipe; 3. Second clear water pipe; 4. Diaphragm; 5. Same-layer stirring rod; 6. Shell; 7. Water inlet; 8. Water outlet; 9. First clear water hole; 10. Second clear water hole; 11. Third clear water hole; 12. Fourth clear water hole; 13. Mixer hole. Specific embodiments

[0026] The present invention will be further described below with reference to the drawings and embodiments.

[0027] Figure 1 In this, the new integrated filtration device of this embodiment is horizontally installed (i.e., installed as shown in Figure 1 ), and includes a shell 6, a water inlet 7, a water outlet 8, a clear water pipe orifice, a diaphragm 4, a clear water pipe, and a stirrer 1. Specifically, the shell 6 is horizontally arranged, the water inlet 7 is provided above the shell 6, the water outlet 8 is provided below the shell 6, and the clear water pipe orifice is arranged at one end of the shell 6; multiple diaphragms 4 are stacked layer by layer and are all vertically arranged in the shell 6, and each diaphragm 4 is penetrated by a clear water pipe from beginning to end. The clear water pipe is horizontally placed, one end of which is arranged in the shell 6, and the other end is placed outside the shell 6 through the above-mentioned clear water pipe orifice (preferably, there are multiple clear water pipes); in addition, a circular through hole is left in the center of each diaphragm 4, and the stirrer 1 is arranged at one end of the shell 6, and its stirring rod is also horizontally installed and extends into the shell 6. The stirrer 1 drives its stirring rod to penetrate into the circular through hole, and no additional circulation pump is required.

[0028] Liquid enters from the upper water inlet 7, passes through the diaphragm 4, and the filtered clear liquid is discharged from multiple clear water pipes (including the first clear water pipe 2, the second clear water pipe 3, etc.), and the concentrated liquid after filtering out the water is discharged from the lower water outlet 8. The water flow velocity and pressure between each diaphragm 4 are basically equal, solving the problems such as insufficient pressure above caused by the vertical placement of the traditional filtration device.

[0029] Preferably, four clear water pipe orifices are arranged at the top cover of the filtration device.

[0030] The novel integrated filtration device of this embodiment adopts a novel stirrer 1 structure. The structure of the stirrer 1 includes two parts, an inner part and an outer part. The outside of the housing 6 includes a motor and a reducer, and inside the housing 6 is a same-layer stirring rod 5 (the same-layer stirring rod 5 in this embodiment: by rotating a long and uniform stirring rod, the water flow forms a substantially the same fluid state within the length range passed by the stirring rod, enabling the membrane to permeate water evenly. The diaphragm 4 is spaced between diaphragms 4 and the diaphragms 4 are all erected and stacked layer by layer. Therefore, for the same stirring rod, the water body between the diaphragms 4 is of "same-layer" water quality), and the water flow is stirred in a forward and reverse rotation to achieve the rinsing effect. When rotating and stirring, a centrifugal effect will also be generated to throw impurities to the edge, reducing the amount of impurities on the membrane surface. Thus, the circulation pump is cancelled, greatly reducing the energy consumption.

[0031] Preferably, as Figure 4 shown, this embodiment adopts a linear same-layer stirring rod 5. The body of the stirring rod is designed in a linear manner, and 3 plate-shaped blades are evenly distributed on the circumference of the body. The included angle between two adjacent plate-shaped blades is 120°, and each plate-shaped blade is placed along the length direction of the body, and the length of each plate-shaped blade is basically the same as the length of the body. Preferably, the body and the plate-shaped blades are integrally formed.

[0032] Figure 2 In this embodiment of the novel integrated filtration device, the diaphragm 4 adopts a square structure. The diaphragm 4 includes two ultrafiltration membranes and a water guide cloth (screen) between the two ultrafiltration membranes, forming a sandwich-type diaphragm.

[0033] A mixer hole 13 (i.e., the circular through hole mentioned above for inserting the stirring rod) is provided at the center of the diaphragm 4, and first clear water holes 9, second clear water holes 10, third clear water holes 11, and fourth clear water holes 12 are respectively provided at the four corners of the diaphragm 4 for inserting clear water pipes.

[0034] Holes are provided at the places on the clear water pipes that are in contact with the above-mentioned clear water holes for the filtered clear liquid to enter the clear water pipes. Specifically, small holes are provided at the clear water holes on the clear water pipes where they are in contact with the water guide cloth (the water guide cloth is thickened) of the diaphragm 4.

[0035] Figure 3 In this embodiment of the novel integrated filtration device, the diaphragms 4 are stacked layer by layer without adding a flow guide disk in the middle. The raw liquid enters the device from the water inlet 7 and enters the middle of the two diaphragms 4 from the center and the periphery of the diaphragm 4. Under the action of pressure, the filtered clear liquid is discharged through the first clear water holes 9, second clear water holes 10, third clear water holes 11, and third clear water holes 12 through the first clear water pipe 2 and the second clear water pipe 3 (Principle: The diaphragm 4 includes two layers of membranes and a water guide cloth sandwiched between them. The filtered clear liquid enters the middle water guide cloth from both sides of the membrane, then converges to the clear water holes, and finally enters the perforated clear water pipe), and the concentrated liquid leaks down from the periphery of the diaphragm 4 and is discharged through the water outlet 8.

[0036] The above are only the preferred embodiments of the present invention and do not constitute a limitation to the protection scope of the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the claims of the present invention.

Claims

1. An integrated filtration device, characterized in that, The device includes a housing, a diaphragm, a clear water pipe, and a stirrer; the housing is horizontally arranged, and a water inlet, a water outlet, and a clear water pipe orifice are respectively provided above, below, and at one end of the housing. The diaphragms are stacked layer by layer and are all erected inside the housing. Each diaphragm passes through the clear water pipe and the stirring rod of the stirrer. Small holes are provided on the clear water pipe at the places where it contacts the diaphragm to introduce the filtered clear liquid into the clear water pipe. One end of the clear water pipe is placed outside the housing through the clear water pipe orifice; The device does not require an externally added circulation pump; The diaphragm includes two ultrafiltration membranes and a water guide cloth therebetween, forming a sandwich-type diaphragm; the shape of the diaphragm is set as a square; four clear water pipe holes and one stirring rod hole are provided on the diaphragm. The clear water pipe holes are located at the four corners of the diaphragm, and the stirring rod hole is located at the center of the diaphragm.

2. The integrated filtering device according to claim 1, wherein The stirring rod passes through the centers of multiple diaphragms. The stirring rod is set as a linear same-layer stirring rod, which can stir the water flow in a positive and negative rotation.

3. An integrated filtering device according to claim 2, characterized in that, The main body of the stirring rod is designed in a linear shape, and a plurality of plate-shaped blades are evenly distributed on the circumference of the main body. The included angles between the plate-shaped blades are the same, and each plate-shaped blade is placed along the length direction of the main body.

4. An integrated filtration device according to claim 1, characterized in that, The small holes are provided at the clear water pipe holes on the clear water pipe where it contacts the water guide cloth.

5. An integrated filtering device according to claim 1, characterized in that, The water guide cloth adopts a thickened design.

6. An integrated filtering device according to claim 1, characterized in that, The stirrer includes a motor and a reducer outside the housing, and the stirring rod horizontally extending into the housing.

7. An integrated filtering device according to claim 1, wherein, The device is an independent unit and can operate independently or in series connection.

8. An integrated filtering device according to claim 1, characterized in that, The clear water pipe orifice is provided at the top cover of the filtering device.

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