Gravity type valveless ceramic membrane pool

Abstract

The invention discloses a gravity type valveless ceramic membrane tank and relates to the technical field of water treatment equipment. In order to solve the problems that when a traditional valveless filter structure works, backwashing is carried out only by virtue of the gravity of water, so that the backwashing effect is poor, and a filter material layer is easy to harden and perforate. The high-flux ceramic membrane is used for replacing traditional filter sand, and a gravity water head is used for filtering, so that the filtering efficiency is improved, the maintenance cost is reduced, the phenomenon that a filter material layer is easy to harden and perforate is avoided, and the backwashing effect is enhanced. In particular, an ozone generator is arranged, automatic ozone can be introduced into the backwashing water tank before backwashing through a liquid level sensor in a siphon, the ceramic membrane is subjected to backwashing through ozone water, the backwashing effect is good, and flux recovery is high. The invention is suitable for the technical field of gravity type filtration treatment of water.

Description

Technical Field

[0001] The invention relates to the technical field of water treatment equipment, and in particular to a gravity-type valveless ceramic membrane pool. Background Art

[0002] As a highly efficient water treatment technology, valveless filters have been widely used in various fields due to their unique design and operational advantages. They primarily utilize gravity to distribute and filter water, eliminating the need for complex valve controls, thus simplifying system structure and operational complexity. The automatic inlet and backwash capabilities of valveless filters make them excellent for continuous water supply and quality assurance, particularly in rural water supply, small community water treatment, industrial water pretreatment, and emergency water supply systems. Furthermore, their low energy consumption and high degree of automation make them an ideal choice for environmental protection and sustainable development.

[0003] However, traditional valveless filters rely solely on gravity for backwashing, resulting in poor backwashing effectiveness and the filter media becoming susceptible to compaction and perforation. Furthermore, traditional valveless filters are also difficult to clean with sand, requiring frequent manual intervention, increasing maintenance difficulty and costs. Summary of the Invention

[0004] The present invention proposes a gravity-type valveless ceramic membrane tank to solve the problem that the traditional valveless filter tank structure relies solely on the gravity of water for backwashing during operation, resulting in poor backwashing effect and easy compaction and perforation of the filter material layer.

[0005] The present invention provides a gravity-type valveless ceramic membrane tank, which comprises an inlet pipe 1, an inlet weir 2, an inlet distribution trough 3, a U-shaped inlet pipe 4, a filter chamber 5, a water collection chamber 6, a connecting channel 7, a flushing water tank 8, an outlet weir 9, an outlet pipe 10, a siphon riser 11, an ozone generator 13, an ozone aeration pipe 14, a siphon breaking bucket 15, a siphon auxiliary pipe 16, a siphon downpipe 17, a drain pipe 18, a drain weir 19, a drain channel 20, and a ceramic membrane filter assembly 21.

[0006] The interior of the flushing water tank 8 is provided with a filter chamber 5 at the bottom, and a water collection chamber 6 is provided at the bottom of the filter chamber 5. The output end of the water collection chamber 6 is communicated with the interior of the flushing water tank 8 through a connecting channel 7. A ceramic membrane filter assembly 21 is provided inside the filter chamber 5. An ozone generator 13 is provided at one end of the top surface of the flushing water tank 8. An ozone aeration pipe 14 is provided on one side of the ozone generator 13, and the output end of the ozone aeration pipe 14 is inserted into the interior of the connecting channel 7. A through hole is processed at the center of the top of the flushing water tank 8, and one end of the siphon riser 11 passes through the through hole at the top of the flushing water tank 8 and is connected to the top input port of the filter chamber 5. The other end of the siphon riser 11 is connected to the top of the siphon downpipe 17 through the siphon auxiliary pipe 16. The flushing water tank 8 A drainage pipe 18 and a drainage weir 19 are provided on the outside of the flushing water tank 8. A drainage channel 20 is provided inside the drainage weir 19. The bottom end of the siphon downpipe 17 is inserted into the inside of the drainage channel 20. The drainage channel 20 is connected to the drainage pipe 18. A siphon breaking bucket 15 is provided at the connection between the other end of the siphon riser 11 and the siphon auxiliary pipe 16. The connection between the siphon riser 11 and the top input port of the filter chamber 5 is connected to one end of the U-shaped water inlet pipe 4. An inlet weir 2 is provided on the outside of the back of the flushing water tank 8. An inlet distribution groove 3 is provided on the inlet weir 2. The other end of the U-shaped water inlet pipe 4 is inserted into the inside of the inlet distribution groove 3. An inlet pipe 1 is provided in the middle of the inlet weir 2. An outlet weir 9 is provided at one end of the internal top surface of the flushing water tank 8, and an outlet pipe 10 is provided on the outlet weir 9.

[0007] Furthermore, the filter chamber 5 and the water collection chamber 6 are connected;

[0008] Furthermore, the interior of the water collecting chamber 6 is connected to the interior of the communication channel 7;

[0009] Furthermore, the interior of the communication channel 7 is connected to the interior of the flushing water tank 8;

[0010] Furthermore, a liquid level sensor 12 is provided between the ozone generator 13 and the siphon riser 11;

[0011] Furthermore, the ceramic membrane filtration assembly 21 includes a plurality of ceramic membranes, and the plurality of ceramic membranes are evenly arranged;

[0012] Furthermore, the ceramic membrane is a flat ceramic membrane or a tubular ceramic membrane;

[0013] Furthermore, the siphon downcomer 17 is fixedly connected to the outer wall of the flushing water tank 8 along the length direction through a plurality of fixing clips;

[0014] Furthermore, the end of the siphon riser 11, the top input port of the filter chamber 5 and one end of the U-shaped water inlet pipe 4 are connected through a tee;

[0015] Furthermore, the end of the siphon breaking bucket 15 is inserted into the interior of the flushing water tank 8;

[0016] Furthermore, during use, when gravity head filtration begins, the filtered water enters the water inlet weir 2 through the water inlet pipe 1, and then enters the water distribution tank 3 from the water inlet weir. The filtered water then passes through the U-shaped water inlet pipe 4 and reaches the filter chamber 5. Under the action of gravity, the water permeates the ceramic membrane filter assembly 21. The filtered water is collected by the water collection chamber 6 and reaches the flushing tank 8 through the connecting channel 7. As the filtration progresses, the water level in the flushing tank 8 continues to rise. When the water level in the flushing tank 8 reaches the top of the water outlet weir 9, overflow occurs, and the overflowing clean water enters the next water treatment unit through the outlet pipe 10.

[0017] From the late filtration stage to the backwash stage, as the filtration resistance of the ceramic membrane filter assembly 21 increases, the liquid level in the siphon riser 11 continues to rise; when the liquid level in the siphon riser 11 reaches the liquid level sensor 12, the liquid level sensor controls the ozone generator 13 to turn on, and the water reaches the connecting channel 7 through the ozone aeration pipe. At this time, the water in the connecting channel becomes ozone water; when the liquid level in the siphon riser 11 continues to exceed the outlet of the siphon auxiliary pipe 16, the water flows downward along the siphon auxiliary pipe and takes away the original air in the siphon pipe. Due to the negative pressure suction phenomenon, the water in the siphon pipe enters the siphon downcomer, and the water in the flushing water tank 8 begins to flow back under the action of gravity. The ozone water in the connecting channel 7 begins to backwash the ceramic membrane filter assembly 21;

[0018] Backwashing ends, and when the water level in the flushing water tank 8 drops to the siphon destroyer 15, siphon is destroyed, and backwashing ends. Now, the liquid level in the siphon riser 11 pipes descends, and the liquid level sensor 12 controls the ozone generator 13 to close.

[0019] Compared with the prior art, the present invention has the following beneficial effects:

[0020] This invention overcomes the shortcomings of existing technologies by replacing traditional filter sand with a high-flux ceramic membrane and utilizing gravity head filtration. The device, which eliminates valves, improves filtration efficiency, reduces maintenance and manufacturing costs, avoids compaction and perforation of the filter media, and enhances backwash effectiveness. The device is equipped with an ozone generator that automatically injects ozone into the backwash water tank before backwashing, based on a liquid level sensor in the siphon. This ozone water then backwashes the ceramic membrane, resulting in excellent backwash performance and high flux recovery. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a side sectional view of a gravity-type valveless ceramic membrane tank according to the present invention;

[0022] Figure 2 This is a main cross-sectional view of two gravity-type valveless ceramic membrane tanks connected in series according to the present invention;

[0023] Figure 3 It is a top view of two gravity-type valveless ceramic membrane tanks according to the present invention connected in series. DETAILED DESCRIPTION

[0024] Specific implementation method 1: Combination Figures 1 to 3 The present embodiment is described as follows: a gravity-type valveless ceramic membrane tank is composed of an inlet pipe 1, an inlet weir 2, an inlet distribution trough 3, a U-shaped inlet pipe 4, a filter chamber 5, a water collection chamber 6, a connecting channel 7, a flushing water tank 8, an outlet weir 9, an outlet pipe 10, a siphon riser 11, an ozone generator 13, an ozone aeration pipe 14, a siphon breaking bucket 15, a siphon auxiliary pipe 16, a siphon downpipe 17, a drain pipe 18, a drain weir 19, a drain channel 20, and a ceramic membrane filtration assembly 21.

[0025] The interior of the flushing water tank 8 is provided with a filter chamber 5 at the bottom, and a water collection chamber 6 is provided at the bottom of the filter chamber 5. The output end of the water collection chamber 6 is communicated with the interior of the flushing water tank 8 through a connecting channel 7. A ceramic membrane filter assembly 21 is provided inside the filter chamber 5. An ozone generator 13 is provided at one end of the top surface of the flushing water tank 8. An ozone aeration pipe 14 is provided on one side of the ozone generator 13, and the output end of the ozone aeration pipe 14 is inserted into the interior of the connecting channel 7. A through hole is processed at the center of the top of the flushing water tank 8, and one end of the siphon riser 11 passes through the through hole at the top of the flushing water tank 8 and is connected to the top input port of the filter chamber 5. The other end of the siphon riser 11 is connected to the top of the siphon downpipe 17 through the siphon auxiliary pipe 16. The flushing water tank 8 A drainage pipe 18 and a drainage weir 19 are provided on the outside of the flushing water tank 8. A drainage channel 20 is provided inside the drainage weir 19. The bottom end of the siphon downpipe 17 is inserted into the inside of the drainage channel 20. The drainage channel 20 is connected to the drainage pipe 18. A siphon breaking bucket 15 is provided at the connection between the other end of the siphon riser 11 and the siphon auxiliary pipe 16. The connection between the siphon riser 11 and the top input port of the filter chamber 5 is connected to one end of the U-shaped water inlet pipe 4. An inlet weir 2 is provided on the outside of the back of the flushing water tank 8. An inlet distribution groove 3 is provided on the inlet weir 2. The other end of the U-shaped water inlet pipe 4 is inserted into the inside of the inlet distribution groove 3. An inlet pipe 1 is provided in the middle of the inlet weir 2. An outlet weir 9 is provided at one end of the internal top surface of the flushing water tank 8, and an outlet pipe 10 is provided on the outlet weir 9.

[0026] In this embodiment, when gravity head filtration begins, the filtered water enters the water inlet weir 2 through the water inlet pipe 1, and then enters the water distribution trough 3 from the water inlet weir. The filtered water then passes through the U-shaped water inlet pipe 4 and reaches the filter chamber 5. Under the action of gravity, the water permeates the ceramic membrane filter assembly 21. The filtered water is collected by the water collection chamber 6 and reaches the flushing tank 8 through the connecting channel 7. As the filtration progresses, the water level in the flushing tank 8 continues to rise. When the water level in the flushing tank 8 reaches the top of the outlet weir 9, overflow occurs, and the overflowing clean water enters the next water treatment unit through the outlet pipe 10.

[0027] From the late filtration stage to the backwash stage, as the filtration resistance of the ceramic membrane filter assembly 21 increases, the liquid level in the siphon riser 11 continues to rise; when the liquid level in the siphon riser 11 reaches the liquid level sensor 12, the liquid level sensor controls the ozone generator 13 to turn on, and the water reaches the connecting channel 7 through the ozone aeration pipe. At this time, the water in the connecting channel becomes ozone water; when the liquid level in the siphon riser 11 continues to exceed the outlet of the siphon auxiliary pipe 16, the water flows downward along the siphon auxiliary pipe and takes away the original air in the siphon pipe. Due to the negative pressure suction phenomenon, the water in the siphon pipe enters the siphon downcomer, and the water in the flushing water tank 8 begins to flow back under the action of gravity. The ozone water in the connecting channel 7 begins to backwash the ceramic membrane filter assembly 21;

[0028] Backwashing ends, and when the water level in the flushing water tank 8 drops to the siphon destroyer 15, siphon is destroyed, and backwashing ends. Now, the liquid level in the siphon riser 11 pipes descends, and the liquid level sensor 12 controls the ozone generator 13 to close.

[0029] Specific implementation method 2: Combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. This embodiment is a gravity-type valveless ceramic membrane pool, in which the filter chamber 5 and the water collection chamber 6 are connected.

[0030] Specific implementation method three: Combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the second embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, in which the interior of the water collection chamber 6 is connected to the interior of the connecting channel 7.

[0031] Specific implementation method four: Combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the third embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, in which the interior of the connecting channel 7 and the interior of the flushing water tank 8 are connected.

[0032] Specific implementation method five: Combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. In this embodiment, a gravity-type valveless ceramic membrane pool is provided, and a liquid level sensor 12 is provided between the ozone generator 13 and the siphon riser 11.

[0033] Specific implementation method six: combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, and the ceramic membrane filtration assembly 21 includes a plurality of ceramic membranes, which are evenly arranged.

[0034] Specific implementation method seven: combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the sixth embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, and the ceramic membrane is a flat ceramic membrane or a tubular ceramic membrane.

[0035] Specific implementation method eight: combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, in which the siphon downcomer 17 is fixedly connected to the outer wall of the flushing water tank 8 along the length direction through a plurality of fixing clamps.

[0036] Specific implementation method nine: combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. This embodiment describes a gravity-type valveless ceramic membrane pool, in which the end of the siphon riser 11, the top input port of the filter chamber 5 and one end of the U-shaped water inlet pipe 4 are connected by a tee.

[0037] Specific implementation method ten: Combination Figures 1 to 3 This embodiment is described as a further limitation of the filter pool described in the first embodiment. In this embodiment, a gravity-type valveless ceramic membrane pool is described, and the end of the siphon breaking bucket 15 is inserted into the interior of the flushing water tank 8.

[0038] How it works

[0039] During operation, when gravity head filtration begins, the filtered water flows through inlet pipe 1 into inlet weir 2, then from the weir into inlet distribution trough 3. The filtered water then flows through U-shaped inlet pipe 4 to filter chamber 5. Under the influence of gravity, the water permeates the ceramic membrane filter assembly 21. The filtered water is collected in water collection chamber 6 and reaches flushing tank 8 through connecting channel 7. As filtration progresses, the water level in flushing tank 8 continues to rise. When the water level in flushing tank 8 reaches the top of outlet weir 9, overflow occurs, and the overflowing clean water flows through outlet pipe 10 to the next water treatment unit.

[0040] From the late filtration stage to the backwash stage, as the filtration resistance of the ceramic membrane filter assembly 21 increases, the liquid level in the siphon riser 11 continues to rise; when the liquid level in the siphon riser 11 reaches the liquid level sensor 12, the liquid level sensor controls the ozone generator 13 to turn on, and the water reaches the connecting channel 7 through the ozone aeration pipe. At this time, the water in the connecting channel becomes ozone water; when the liquid level in the siphon riser 11 continues to exceed the outlet of the siphon auxiliary pipe 16, the water flows downward along the siphon auxiliary pipe and takes away the original air in the siphon pipe. Due to the negative pressure suction phenomenon, the water in the siphon pipe enters the siphon downcomer, and the water in the flushing water tank 8 begins to flow back under the action of gravity. The ozone water in the connecting channel 7 begins to backwash the ceramic membrane filter assembly 21;

[0041] When the backwash is finished, when the water level in the flushing water tank 8 drops to the siphon breaking bucket 15, the siphon is broken and the backwash is finished. At this time, the liquid level in the siphon riser 11 drops, and the liquid level sensor 12 controls the ozone generator 13 to turn off. When in use, two or more of the devices can be used in series according to actual needs.

Claims

1. A gravity valveless ceramic membrane tank, characterized by: It comprises a water inlet pipe (1), a water inlet weir (2), a water inlet distribution trough (3), a U-shaped water inlet pipe (4), a filter chamber (5), a water collection chamber (6), a connecting channel (7), a flushing water tank (8), a water outlet weir (9), a water outlet pipe (10), a siphon riser (11), an ozone generator (13), an ozone aeration pipe (14), a siphon breaking bucket (15), a siphon auxiliary pipe (16), a siphon downpipe (17), a drainage pipe (18), a drainage weir (19), a drainage channel (20) and a ceramic membrane filtration assembly (21); The interior of the flushing water tank (8) is provided with a filter chamber (5) at the bottom, a water collecting chamber (6) is provided at the bottom of the filter chamber (5), the output end of the water collecting chamber (6) is communicated with the interior of the flushing water tank (8) through a connecting channel (7), a ceramic membrane filter assembly (21) is provided inside the filter chamber (5), an ozone generator (13) is provided at one end of the top surface of the flushing water tank (8), an ozone aeration pipe (14) is provided on one side of the ozone generator (13), and the output end of the ozone aeration pipe (14) is inserted into the interior of the connecting channel (7), a through hole is processed at the center of the top of the flushing water tank (8), and one end of the siphon riser (11) passes through the through hole at the top of the flushing water tank (8) and is connected to the top input port of the filter chamber (5), the other end of the siphon riser (11) is connected to the top of the siphon downpipe (17) through the siphon auxiliary pipe (16), and the outside of the flushing water tank (8) is provided with an ozone generator (13). A drainage pipe (18) and a drainage weir (19) are provided. A drainage channel (20) is provided inside the drainage weir (19). The bottom end of the siphon downpipe (17) is inserted into the drainage channel (20). The drainage channel (20) is connected to the drainage pipe (18). A siphon breaking bucket (15) is provided at the connection between the other end of the siphon riser (11) and the siphon auxiliary pipe (16). The connection between the siphon riser (11) and the top input port of the filter chamber (5) is connected to one end of the U-shaped water inlet pipe (4). An inlet weir (2) is provided on the outside of the back of the flushing water tank (8). An inlet distribution groove (3) is provided on the inlet weir (2). The other end of the U-shaped water inlet pipe (4) is inserted into the inside of the inlet distribution groove (3). An inlet pipe (1) is provided in the middle of the inlet weir (2). An outlet weir (9) is provided at one end of the inner top surface of the flushing water tank (8), and an outlet pipe (10) is provided on the outlet weir (9).

2. A gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: The filter chamber (5) and the water collection chamber (6) are connected.

3. The gravity-type valveless ceramic membrane tank according to claim 2, characterized in that: The interior of the water collection chamber (6) is connected to the interior of the communication channel (7).

4. The gravity-type valveless ceramic membrane tank according to claim 3, characterized in that: The interior of the communication channel (7) and the interior of the flushing water tank (8) are connected.

5. The gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: A liquid level sensor (12) is provided between the ozone generator (13) and the siphon riser (11).

6. The gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: The ceramic membrane filtration assembly (21) comprises a plurality of ceramic membranes, and the plurality of ceramic membranes are evenly arranged.

7. The gravity-type valveless ceramic membrane tank according to claim 6, characterized in that: The ceramic membrane is a flat ceramic membrane or a tubular ceramic membrane.

8. The gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: The siphon downcomer (17) is fixedly connected to the outer wall of the flushing water tank (8) along its length direction via a plurality of fixing clips.

9. The gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: The end of the siphon riser (11), the top input port of the filter chamber (5), and one end of the U-shaped water inlet pipe (4) are connected via a tee.

10. The gravity-type valveless ceramic membrane tank according to claim 1, characterized in that: The end of the siphon breaking bucket (15) is inserted into the interior of the flushing water tank (8).

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