Self-cleaning reverse osmosis membrane filter

Abstract

The invention belongs to the technical field of reverse osmosis water purification devices, and particularly relates to a self-cleaning reverse osmosis membrane filter which comprises a reverse osmosis membrane filter body, a water storage tank is arranged below the reverse osmosis membrane filter body, and the reverse osmosis membrane filter body is fixedly connected with the upper surface of the water storage tank through a support. A water inlet is formed in the upper surface of the reverse osmosis membrane filter body, the input end of the water inlet is communicated with a water inlet pipe, and a pure water outlet and a wastewater outlet are formed in the side wall of the bottom of the reverse osmosis membrane filter body. According to the reverse osmosis membrane type filter disclosed by the invention, a chemical cleaning agent circulates in a reverse osmosis membrane through the arranged circulating cleaning assembly, so that the self-cleaning operation of the reverse osmosis membrane type filter is realized, the chemical agent can be more sufficiently and uniformly mixed during preparation through the arranged uniform mixing assembly, and the chemical agent can be more thoroughly and uniformly mixed through the arranged filtering assembly; when a solvent is added, the solvent can be efficiently filtered.

Description

Technical Field

[0001] The invention belongs to the technical field of reverse osmosis water purification devices, and in particular relates to a self-cleaning reverse osmosis membrane filter. Background Art

[0002] Reverse osmosis membrane is an artificial semipermeable membrane with certain characteristics made by simulating biological semipermeable membrane. Under pressure, it can allow water to pass through while preventing impurities such as salt, colloids, bacteria, viruses, etc. in the water from passing through, thereby achieving water purification and solute separation. There are many tiny pores on the surface of the reverse osmosis membrane. Generally speaking, water molecules are small and have a certain affinity with the membrane material and can pass through the membrane pores smoothly. Impurities such as salt ions cannot pass through the membrane pores due to their large ion radius or mutual repulsion with the charge on the membrane surface, thereby achieving the separation of water and impurities. Reverse osmosis membrane filter is a water treatment equipment with reverse osmosis membrane as the core filter element. It mainly works based on the reverse osmosis principle.

[0003] The above prior art often has the following problems when used:

[0004] Existing reverse osmosis membrane filters lack cleaning measures for the reverse osmosis membrane when in use. When the filter is working, the reverse osmosis membrane is used to filter and purify the water source. In this process, the reverse osmosis membrane that performs the filtering function will be attached with a large amount of impurities and particulate matter, etc. If there is a lack of corresponding treatment measures, the subsequent filtration efficiency of the reverse osmosis membrane filter will be too low. When cleaning the reverse osmosis membrane, chemical cleaning methods are mostly used to dissolve or decompose the impurities attached to the reverse osmosis membrane through chemicals. However, this process requires that the chemicals can be fully mixed with the solvent to improve the subsequent cleaning efficiency. At the same time, when adding solvents, it is also necessary to ensure that the solvents are clean enough, so corresponding treatment measures are required. Summary of the invention

[0005] The purpose of the present invention is to provide a self-cleaning reverse osmosis membrane filter that can provide efficient self-cleaning measures in order to solve the problem that the above reverse osmosis membrane filter lacks cleaning measures.

[0006] To achieve the above-mentioned purpose, the present invention adopts the following technical scheme: a self-cleaning reverse osmosis membrane filter, comprising a reverse osmosis membrane filter body, a water storage tank is arranged below the reverse osmosis membrane filter body, the reverse osmosis membrane filter body is fixedly connected to the upper surface of the water storage tank through a bracket, a drain is arranged at the bottom of the side wall of the water storage tank, a water inlet is arranged on the upper surface of the reverse osmosis membrane filter body, the input end of the water inlet is connected with a water inlet pipe, a pure water outlet and a waste water outlet are arranged on the side wall at the bottom of the reverse osmosis membrane filter body, the output end of the pure water outlet is connected with a No. 1 outlet pipe, the output end of the waste water outlet is connected with a No. 2 outlet pipe, a self-cleaning mechanism is arranged between the reverse osmosis membrane filter body and the water storage tank, and the self-cleaning mechanism comprises a circulating cleaning component, a mixing component and a filtering component.

[0007] Preferably, the circulating cleaning component includes a water pump fixedly installed on the bottom surface of the water tank, the output end of the water pump is connected to a No. 1 water pipe, the No. 1 water pipe passes through the upper surface of the water tank, the output end of the No. 1 water pipe is connected to a water inlet pipe, the output end of the No. 1 water pipe is provided with a No. 1 valve, the output end of the No. 2 water outlet pipe is connected to a No. 2 water pipe, the No. 2 water pipe passes through the inner top surface of the water tank, and the input end of the No. 2 water pipe is provided with a No. 2 valve.

[0008] Preferably, the mixing component includes a motor fixedly connected to the side wall of the water tank through a bracket, the output end of the motor is fixedly connected to a No. 1 rotating shaft, the No. 1 rotating shaft is rotatably connected to the inner wall of the water tank through a bearing, a No. 2 rotating shaft is provided in the water tank, the No. 2 rotating shaft is rotatably connected to the upper surface of the water tank through a bearing, one end of the No. 1 rotating shaft close to the No. 2 rotating shaft is fixedly connected to a No. 1 bevel gear, the No. 2 rotating shaft is circumferentially fixedly connected to a No. 2 bevel gear, the No. 1 bevel gear is meshed with the No. 2 bevel gear, and the No. 2 rotating shaft is circumferentially fixedly connected to a plurality of stirring rods equidistantly fixedly connected to the No. 2 rotating shaft.

[0009] Preferably, the filter assembly includes a through groove arranged on the upper surface of the water tank, a cylinder is fixedly connected between the inner walls of the through groove, a partition is fixedly connected between the inner walls of the cylinder, a plurality of sieve holes are equidistantly provided on the upper surface of the partition, and the plurality of sieve holes are communicated with the water tank, a No. 3 rotating shaft is arranged in the cylinder, the No. 3 rotating shaft is rotatably connected to the bottom surface of the partition through a bearing, a driving wheel is fixedly connected to the circumference of the top end of the No. 2 rotating shaft, a driven wheel is fixedly connected to the circumference of the top end of the No. 3 rotating shaft, a belt is sleeved between the driving wheel and the driven wheel, and a plurality of strip cleaning brushes are fixedly connected to the circumference of the No. 3 rotating shaft at equal intervals.

[0010] Preferably, the water pump is connected to the water inlet pipe through a No. 1 water pipe, the output end of the No. 2 water pipe is located in the water storage tank, the reverse osmosis membrane filter body is located above the water storage tank, and the No. 1 water pipe and the No. 2 water pipe are respectively located on both sides of the reverse osmosis membrane filter body.

[0011] Preferably, the first bevel gear and the second bevel gear are both located in the water tank, the first bevel gear and the second bevel gear are respectively arranged concentrically with the first rotating shaft and the second rotating shaft, and the plurality of stirring rods are all located in the water tank.

[0012] Preferably, the third rotating shaft is arranged concentrically with the cylinder and the partition, the multiple strip cleaning brushes are all located in the cylinder, the bristles of the multiple strip cleaning brushes are all in contact with the upper surface of the partition, the driving wheel and the driven wheel are both located outside the water tank, and the diameter of the driving wheel is larger than the diameter of the driven wheel.

[0013] Preferably, the straight-line distance from the center of the second rotating shaft to the side end of the stirring rod is smaller than the straight-line distance from the center of the second rotating shaft to the first water pipe and the second water pipe.

[0014] Compared with the existing technology, the advantages of this self-cleaning reverse osmosis membrane filter are:

[0015] 1. The present invention provides a circulating cleaning component to allow the chemical cleaning agent to circulate in the reverse osmosis membrane to dissolve and decompose the impurities deposited on the reverse osmosis membrane, thereby realizing the self-cleaning operation of the reverse osmosis membrane filter. The self-cleaning measures are used to maintain a stable filtration efficiency of the reverse osmosis membrane, which is more efficient and convenient, and is also conducive to extending the service life of the reverse osmosis membrane.

[0016] 2. The present invention provides a mixing component that allows the chemical agents to be mixed more fully and evenly during preparation, thereby improving the subsequent cleaning efficiency. When preparing chemical cleaning agents, the solute and the solvent need to be mixed, and the degree of mixing of the solute and the solvent will affect the subsequent cleaning efficiency. The more fully and evenly the solute and the solvent are mixed, the higher the cleaning efficiency and the better the effect.

[0017] 3. The present invention provides a filtering component that can efficiently filter the solvent when it is added, thereby ensuring that the added solvent is clean enough, which is beneficial to improving the subsequent cleaning efficiency. At the same time, after the filtration is completed, the power of the mixing component is used to clean the surface of the sieve hole, which is beneficial to improving the preparation efficiency of the chemical agent and the cleaning efficiency of the reverse osmosis membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of a three-dimensional structural analysis of a self-cleaning reverse osmosis membrane filter provided by the present invention;

[0019] Figure 2 It is a schematic diagram of a three-dimensional structural analysis from another perspective of a self-cleaning reverse osmosis membrane filter provided by the present invention;

[0020] Figure 3 It is a three-dimensional structural schematic diagram of a self-cleaning reverse osmosis membrane filter provided by the present invention;

[0021] Figure 4 It is a three-dimensional structural schematic diagram of another viewing angle of a self-cleaning reverse osmosis membrane filter provided by the present invention;

[0022] Figure 5 for Figure 1 Enlarged view of point A in the middle.

[0023] In the figure, 1 is a reverse osmosis membrane filter body; 2 is a water storage tank; 3 is a water inlet; 4 is a water inlet pipe; 5 is a pure water outlet; 6 is a wastewater outlet; 7 is a No. 1 outlet pipe; 8 is a No. 2 outlet pipe; 9 is a water pump; 10 is a No. 1 water pipe; 11 is a No. 1 valve; 12 is a No. 2 water pipe; 13 is a No. 2 valve; 14 is a motor; 15 is a No. 1 rotating shaft; 16 is a No. 2 rotating shaft; 17 is a No. 1 bevel gear; 18 is a No. 2 bevel gear; 19 is a stirring rod; 20 is a through groove; 21 is a cylinder; 22 is a partition; 23 is a No. 3 rotating shaft; 24 is a driving wheel; 25 is a driven wheel; 26 is a belt; 27 is a strip cleaning brush. DETAILED DESCRIPTION

[0024] The following examples are for illustrative purposes only and are not intended to limit the scope of the present invention.

[0025] like Figure 1-Figure 5As shown, a self-cleaning reverse osmosis membrane filter comprises a reverse osmosis membrane filter body 1, a water storage tank 2 is arranged below the reverse osmosis membrane filter body 1, the reverse osmosis membrane filter body 1 is fixedly connected to the upper surface of the water storage tank 2 through a bracket, a drain port is arranged at the bottom of the side wall of the water storage tank 2, a water inlet 3 is arranged on the upper surface of the reverse osmosis membrane filter body 1, an input end of the water inlet 3 is connected with a water inlet pipe 4, a pure water outlet 5 and a waste water outlet 6 are arranged on the side wall at the bottom of the reverse osmosis membrane filter body 1, an output end of the pure water outlet 5 is connected with a first outlet pipe 7, an output end of the waste water outlet 6 is connected with a second outlet pipe 8, a self-cleaning mechanism is arranged between the reverse osmosis membrane filter body 1 and the water storage tank 2, and the self-cleaning mechanism comprises a circulating cleaning component, a mixing component and a filtering component The circulating cleaning component includes a water pump 9 fixedly installed on the bottom surface of the water storage tank 2, the output end of the water pump 9 is connected to a No. 1 water pipe 10, the No. 1 water pipe 10 runs through the upper surface of the water storage tank 2, the output end of the No. 1 water pipe 10 is connected to the water inlet pipe 4, the output end of the No. 1 water pipe 10 is provided with a No. 1 valve 11, the output end of the No. 2 water outlet pipe 8 is connected to a No. 2 water pipe 12, the No. 2 water pipe 12 runs through the inner top surface of the water storage tank 2, the input end of the No. 2 water pipe 12 is provided with a No. 2 valve 13, the water pump 9 is connected to the water inlet pipe 4 through the No. 1 water pipe 10, the output end of the No. 2 water pipe 12 is located in the water storage tank 2, the reverse osmosis membrane filter body 1 is located above the water storage tank 2, the No. 1 water pipe 10 and the No. 2 water pipe 12 are respectively located on both sides of the reverse osmosis membrane filter body 1;

[0026] The mixing component includes a motor 14 fixedly connected to the side wall of the water tank 2 through a bracket, the output end of the motor 14 is fixedly connected to a first rotating shaft 15, the first rotating shaft 15 is rotatably connected to the inner wall of the water tank 2 through a bearing, a second rotating shaft 16 is arranged in the water tank 2, the second rotating shaft 16 is rotatably connected to the upper surface of the water tank 2 through a bearing, the first rotating shaft 15 is fixedly connected to one end of the second rotating shaft 16 near the first rotating shaft 15, the second rotating shaft 16 is circumferentially fixedly connected to the second bevel gear 18, the first bevel gear 17 and the second bevel gear 18 are fixedly connected to the first bevel gear 17. The second bevel gear 18 is meshed with each other, and a plurality of stirring rods 19 are fixedly connected to the circumference of the second rotating shaft 16 at equal intervals. The filtering assembly includes a through groove 20 arranged on the upper surface of the water storage tank 2, a cylinder 21 is fixedly connected between the inner walls of the through groove 20, a partition 22 is fixedly connected between the inner walls of the cylinder 21, and a plurality of sieve holes are equidistantly arranged on the upper surface of the partition 22, and the plurality of sieve holes are connected to the water storage tank 2. A third rotating shaft 23 is arranged in the cylinder 21, and the third rotating shaft 23 is rotatably connected to the bottom surface of the partition 22 through a bearing. The circumferential direction of the top of the second rotating shaft 16 is A driving wheel 24 is fixedly connected, a driven wheel 25 is fixedly connected to the top of the third rotating shaft 23 in the circumferential direction, a belt 26 is sleeved between the driving wheel 24 and the driven wheel 25, a plurality of strip cleaning brushes 27 are fixedly connected to the circumference of the third rotating shaft 23 at equal intervals, the first bevel gear 17 and the second bevel gear 18 are both located in the water storage tank 2, the first bevel gear 17 and the second bevel gear 18 are respectively arranged concentrically with the first rotating shaft 15 and the second rotating shaft 16, a plurality of stirring rods 19 are all located in the water storage tank 2, and the center of the second rotating shaft 16 is to the side of the stirring rod 19 The straight-line distance from the end is smaller than the straight-line distance from the center of the No. 2 rotating shaft 16 to the No. 1 water pipe 10 and the No. 2 water pipe 12, so that the multiple stirring rods 19 will not affect the circulating cleaning component when rotating. The No. 3 rotating shaft 23 is concentrically arranged with the cylinder 21 and the partition 22. The multiple strip cleaning brushes 27 are all located in the cylinder 21, and the bristles of the multiple strip cleaning brushes 27 are all in contact with the upper surface of the partition 22. The driving wheel 24 and the driven wheel 25 are both located outside the water tank 2, and the diameter of the driving wheel 24 is greater than the diameter of the driven wheel 25.

[0027] The working principle of the present invention is as follows:

[0028] After the reverse osmosis membrane filter body 1 has been used for a period of time, a large amount of dirt will be deposited on the reverse osmosis membrane in the reverse osmosis membrane filter body 1, resulting in a decrease in filtration efficiency. At this time, relevant cleaning measures are needed to clean it. Before cleaning it, the cleaning solution is prepared by combining the uniform component and the filtering component, and the solvent and the solute are added into the water storage tank 2 through the cylinder 21, and the motor 14 is started. The motor 14 will drive the No. 1 rotating shaft 15 to rotate, and the No. 1 rotating shaft 15 rotates to drive the No. 1 bevel gear 17 to rotate, and the No. 2 bevel gear 18 and the No. 2 rotating shaft 16 are driven to rotate through meshing transmission. When the solute and the solvent are added into the cylinder 21, the sieve holes on the partition 22 will filter them, thereby helping to improve the system efficiency. The cleanliness of the solution is improved, but as the amount added increases, impurities may accumulate on the surface of the sieve holes, which will affect the filtration efficiency. At this time, the rotation of the No. 2 rotating shaft 16 will drive the driving wheel 24 to rotate, and the driving wheel 24 drives the driven wheel 25 and the No. 3 rotating shaft 23 to rotate through the transmission of the belt 26. The rotation of the No. 3 rotating shaft 23 drives multiple strip cleaning brushes to revolve to clean the back of the sieve holes, so that impurities are no longer accumulated on the top of the sieve holes, which helps to improve the filtration efficiency of the solute and the solvent. When the solute and the solvent are added to the water storage tank 2, the rotating No. 2 rotating shaft 16 drives multiple stirring rods 19 to revolve, which will stir the solute and the solvent, so that the two are mixed more evenly, which helps to improve the subsequent cleaning efficiency.

[0029] After the preparation of the cleaning solution is completed, open valve No. 11 and valve No. 2 13 and start the water pump 9. The water pump 9 draws the cleaning solution in the water storage tank 2 into the No. 1 water pipe 10 for transportation. The cleaning solution enters the reverse osmosis membrane through the water inlet pipe 4, and can dissolve or decompose the impurities and dirt deposited in the reverse osmosis membrane very well. The cleaning solution flows from top to bottom and is discharged through the wastewater outlet 6. It then returns to the No. 2 water pipe 12 through the No. 2 water outlet pipe 8, and then returns to the water storage tank 2 through the No. 2 water pipe 12 to achieve a circulating flow. In this way, the impurities and dirt deposited in the reverse osmosis membrane are continuously cleaned, thereby achieving efficient self-cleaning operation. After the cleaning is completed, close valve No. 1 11 and valve No. 2 13, and the reverse osmosis membrane filter body 1 can be put into normal operation.

[0030] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims

1. A self-cleaning reverse osmosis membrane filter, comprising a reverse osmosis membrane filter body (1), characterized in that: A water storage tank (2) is provided below the reverse osmosis membrane filter body (1); the reverse osmosis membrane filter body (1) is fixedly connected to the upper surface of the water storage tank (2) via a bracket; a drain port is provided at the bottom of the side wall of the water storage tank (2); a water inlet (3) is provided on the upper surface of the reverse osmosis membrane filter body (1); the input end of the water inlet (3) is connected to a water inlet pipe (4); a pure water outlet (5) and a waste water outlet (6) are provided on the side wall at the bottom of the reverse osmosis membrane filter body (1); the output end of the pure water outlet (5) is connected to a first outlet pipe (7); the output end of the waste water outlet (6) is connected to a second outlet pipe (8); a self-cleaning mechanism is provided between the reverse osmosis membrane filter body (1) and the water storage tank (2); the self-cleaning mechanism comprises a circulating cleaning component, a mixing component and a filtering component.

2. A self-cleaning reverse osmosis membrane filter according to claim 1, characterized in that: The circulating cleaning component comprises a water pump (9) fixedly mounted on the bottom surface of the water storage tank (2); the output end of the water pump (9) is connected to a first water pipe (10); the first water pipe (10) passes through the upper surface of the water storage tank (2); the output end of the first water pipe (10) is connected to a water inlet pipe (4); a first valve (11) is provided at the output end of the first water pipe (10); the output end of the second water outlet pipe (8) is connected to a second water pipe (12); the second water pipe (12) passes through the inner top surface of the water storage tank (2); and a second valve (13) is provided at the input end of the second water pipe (12).

3. A self-cleaning reverse osmosis membrane filter according to claim 2, characterized in that: The mixing component comprises a motor (14) fixedly connected to the side wall of the water tank (2) through a bracket, the output end of the motor (14) is fixedly connected to a first rotating shaft (15), the first rotating shaft (15) is rotatably connected to the inner wall of the water tank (2) through a bearing, a second rotating shaft (16) is arranged in the water tank (2), the second rotating shaft (16) is rotatably connected to the upper surface of the water tank (2) through a bearing, the first rotating shaft (15) is fixedly connected to one end of the second rotating shaft (16) close to the first rotating shaft (16), the second rotating shaft (16) is circumferentially fixedly connected to a second bevel gear (18), the first bevel gear (17) is meshed with the second bevel gear (18), and the second rotating shaft (16) is circumferentially fixedly connected to a plurality of stirring rods (19) at equal intervals.

4. A self-cleaning reverse osmosis membrane filter according to claim 3, characterized in that: The filtering assembly comprises a through groove (20) arranged on the upper surface of the water storage tank (2); a cylinder (21) is fixedly connected between the inner walls of the through groove (20); a partition (22) is fixedly connected between the inner walls of the cylinder (21); a plurality of sieve holes are equidistantly arranged on the upper surface of the partition (22); the plurality of sieve holes are all connected to the water storage tank (2); a third rotating shaft (23) is arranged in the cylinder (21); the third rotating shaft (23) is rotatably connected to the bottom surface of the partition (22) through a bearing; a driving wheel (24) is circumferentially fixedly connected to the top of the second rotating shaft (16); a driven wheel (25) is circumferentially fixedly connected to the top of the third rotating shaft (23); a belt (26) is sleeved between the driving wheel (24) and the driven wheel (25); and a plurality of strip-shaped cleaning brushes (27) are equidistantly fixedly connected to the third rotating shaft (23).

5. A self-cleaning reverse osmosis membrane filter according to claim 2, characterized in that: The water pump (9) is connected to the water inlet pipe (4) via a No. 1 water pipe (10); the output end of the No. 2 water pipe (12) is located in the water storage tank (2); the reverse osmosis membrane filter body (1) is located above the water storage tank (2); and the No. 1 water pipe (10) and the No. 2 water pipe (12) are respectively located on both sides of the reverse osmosis membrane filter body (1).

6. A self-cleaning reverse osmosis membrane filter according to claim 3, characterized in that: The first bevel gear (17) and the second bevel gear (18) are both located in the water tank (2); the first bevel gear (17) and the second bevel gear (18) are respectively arranged concentrically with the first rotating shaft (15) and the second rotating shaft (16); and the plurality of stirring rods (19) are all located in the water tank (2).

7. A self-cleaning reverse osmosis membrane filter according to claim 4, characterized in that: The third rotating shaft (23) is arranged concentrically with the cylinder (21) and the partition (22); the plurality of strip-shaped cleaning brushes (27) are all located in the cylinder (21); the bristles of the plurality of strip-shaped cleaning brushes (27) are all in contact with the upper surface of the partition (22); the driving wheel (24) and the driven wheel (25) are both located outside the water tank (2); and the diameter of the driving wheel (24) is greater than the diameter of the driven wheel (25).

8. A self-cleaning reverse osmosis membrane filter according to claim 3, characterized in that: The straight-line distance from the center of the second rotating shaft (16) to the side end of the stirring rod (19) is smaller than the straight-line distance from the center of the second rotating shaft (16) to the first water pipe (10) and the second water pipe (12).

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