Flexible fiber filter cloth filter tank

Abstract

The utility model discloses a flexible fiber filter cloth filter tank in the technical field of water treatment. The device comprises a first tank body, the first tank body is connected with a water inlet pipe and a water outlet pipe, fiber filter cloth is arranged in the first tank body and used for filtering water entering the first tank body, a second tank body with a downward opening is further arranged in the first tank body, and the fiber filter cloth is arranged at the opening of the second tank body. The size of the fiber filter cloth is larger than that of the opening of the second tank body, so that the fiber filter cloth can move up and down; the backwashing drain pipe is communicated with the interior of the second tank body and the exterior of the first tank body; the backwashing drain pipe is communicated with the water seal well outside the first tank body, and the liquid level setting position of the water seal well is lower than the lowermost end of the second tank body. The second tank body with a downward opening is additionally arranged, and fiber filter cloth is arranged at the opening of the second tank body, so that gravity backwashing is realized, and energy conservation and environmental protection are realized; the fiber filter cloth moves in different water flow directions, so that the washing effect can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of water treatment, and particularly relates to a flexible fiber filter cloth filter tank. Background Art

[0002] Fiber filter cloth filter tanks have been widely used in the advanced treatment of sewage treatment. As a treatment facility for removing suspended solids in water, it is to ensure that the suspended pollutants in the effluent meet the standards. The currently applied fiber filter cloth filter tanks all need to be equipped with backwash water pumps and mechanical transmission devices. Through the suction of the water pump, each part of the filter cloth is washed locally, and then through the mechanical transmission device, the filter cloth is rotated or the suction pipeline is moved, so as to realize the cleaning of the whole filter cloth. The backwash device of the fiber filter cloth filter tank not only has a complex equipment configuration and structure, but also consumes electric energy. Content of the Utility Model

[0003] In order to overcome the technical problems of complex backwash structure and high energy consumption of the existing fiber filter cloth filter tank, the utility model provides a flexible fiber filter cloth filter tank.

[0004] The technical solution adopted by the utility model to solve its technical problems is as follows:

[0005] The flexible fiber filter cloth filter tank includes a first tank body, the first tank body is connected with a water inlet pipe and a water outlet pipe, and a fiber filter cloth is arranged in the first tank body for filtering the water body entering the first tank body through the water inlet pipe. A second tank body with an opening downward is also arranged in the first tank body. The fiber filter cloth is arranged at the opening of the second tank body, and the size of the fiber filter cloth is larger than the size of the opening of the second tank body, so that the fiber filter cloth can move up and down, and the water inlet pipe communicates with the inside of the second tank body; it also includes a backwash drain pipe, and the backwash drain pipe communicates the inside of the second tank body and the outside of the first tank body; the backwash drain pipe communicates with a water seal well outside the first tank body, and the liquid level setting position of the water seal well is lower than the lowest end of the first tank body.

[0006] In this application, by adding a second tank body with an opening downward and arranging a fiber filter cloth at the opening of the second tank body, the fiber filter cloth can realize gravity backwashing, which is energy-saving, carbon-saving and environmentally friendly. The size of the fiber filter cloth is larger than the size of the opening of the second tank body, so that the fiber filter cloth can move under the impact of different water flow directions to improve the washing effect.

[0007] Further, the second tank body includes an upper part with an inverted conical shape and a lower part with a cylindrical shape, and the lower end opening of the inverted conical shape is adapted to the size of the cylindrical part.

[0008] In this embodiment, based on the fact that the flexible fiber filter cloth filter tank in this application has a backwash function, the second tank body preferably implemented as above is used here to facilitate the discharge of sewage during backwashing and avoid forming a sewage discharge dead angle.

[0009] Further, the fiber filter cloth is circular, and the diameter of the fiber filter cloth is 1.1 - 1.2 times the diameter of the opening of the second tank.

[0010] In this embodiment, based on the aforementioned backwashing function, the preferred fiber filter cloth is implemented as above, so that the fiber filter cloth will vibrate under the water flow fluctuation, further improving the flushing effect.

[0011] Further, the fiber filter cloth is connected to the outlet of the second tank through a clamp, and a water-stop rubber band is arranged at the connection.

[0012] In this embodiment, the preferred fiber filter cloth is detachably connected through a clamp, and a water-stop rubber band is arranged at the connection for sealing.

[0013] Further, the included angle between the middle bus of the inverted conical shape of the second tank and the horizontal is 10° - 20°.

[0014] In this embodiment, with the above-limited angle, the advantages of avoiding the formation of sewage dead corners and convenient implementation are taken into account.

[0015] Further, the second tank is fixedly connected to the middle part of the first tank through a support frame.

[0016] In this embodiment, with the above setting, the water body in the first tank is evenly distributed, which is convenient for adjustment and optimization.

[0017] Further, a drain pipe is connected to the bottom of the first tank, and a valve is arranged on the drain pipe.

[0018] Further, a maintenance hole is provided at the lower part of the first tank for people to enter the first tank.

[0019] In this embodiment, the maintenance hole is provided to facilitate the maintenance of the inside of the first tank and the disassembly and replacement of the fiber filter cloth.

[0020] Further, a flushing intensity regulator is arranged at one end of the backwashing drain pipe located in the water seal well to adjust the flushing intensity.

[0021] Further, a tee is arranged inside the first tank, and the water inlet pipe and the backwashing drain pipe are connected to the inside of the second tank through the tee. Thereby, the structure is further simplified.

[0022] The beneficial effects of the utility model are as follows:

[0023] 1. By optimizing the structure of the fiber filter cloth filter tank, the gravity backwashing of the fiber filter cloth filter tank is realized, which is energy-saving, low-carbon and environmentally friendly. The overall structure is simple and the cost is lower.

[0024] 2. Under the action of water flow and gravity, the physical movement of the fiber filter cloth during filtration and backwashing disturbs the impurities attached to the filter cloth, making the flushing cleaner.

[0025] 3. Optimize the structure of the second tank to avoid forming sewage dead corners during the backwashing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the overall structure of the flexible fiber filter cloth filter tank provided by the present utility model;

[0027] Figure 2 is Figure 1 a schematic diagram in the A-A direction in;

[0028] Figure 3 is Figure 1 a schematic diagram in the B-B direction in.

[0029] In the figure, the markings are: 0 - the first tank, 1 - the water outlet pipe, 2 - the tee, 3 - the backwash drain pipe, 4 - the water seal well, 5 - the overflow weir, 6 - the washing intensity regulator, 7 - the emptying pipe, 8 - the concrete foundation, 9 - the water inlet pipe, 10 - the fiber filter cloth, 11 - the support frame, 12 - the second tank, 13 - the maintenance hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0030] The present utility model will be further described below with reference to the drawings.

[0031] In order to make the purpose, technical solutions and advantages of the present utility model more clear and understandable, the present utility model will be further described in detail below with reference to the drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0032] Combined with Figures 1 - 3 as shown, the present utility model provides a flexible fiber filter cloth filter tank.

[0033] The flexible fiber filter cloth filter tank includes a first tank 0. The first tank 0 is connected with a water inlet pipe 9 and a water outlet pipe 1. A fiber filter cloth 10 is arranged in the first tank 0 for filtering the water body entering the first tank 0 through the water inlet pipe 9. A second tank 12 with an opening downward is also arranged in the first tank 0. The fiber filter cloth 10 is arranged at the opening of the second tank 12, and the size of the fiber filter cloth 10 is larger than the size of the opening of the second tank 12, so that the fiber filter cloth 10 can move up and down. The water inlet pipe 9 communicates with the inside of the second tank 12; it also includes a backwash drain pipe 3, and the backwash drain pipe 3 communicates the inside of the second tank 12 and the outside of the first tank 0; the backwash drain pipe 3 communicates with the water seal well 4 outside the first tank 0, and the liquid level setting position of the water seal well 4 is lower than the lowest end of the first tank 0.

[0034] In this application, by adding a second tank body 12 with an opening facing downward, and a fiber filter cloth 10 is arranged at the opening of the second tank body 12, the fiber filter cloth 10 can achieve gravity backwashing, which is energy-saving, carbon-saving and environmentally friendly. The size of the fiber filter cloth 10 is larger than the size of the opening of the second tank body 12, so that the fiber filter cloth 10 can move under the impact of water flow in different directions to improve the flushing effect. Specifically, one end of the backwash drain pipe 3 outside the first tank body 0 is connected to a water seal well 4, and the water seal well 4 is used to ensure that no air enters the pipeline. The liquid level of the water seal well 4 should be lower than the lowest end of the first tank body 0 to ensure the backwash intensity and achieve the backwash effect. The water seal well 4 is connected to the external drainage system through a pipeline.

[0035] In this application, flexibility means that the fiber filter cloth 10 can move under the impact of water flow in different directions, that is, in the filtering state and the backwashing state, the fiber filter cloth 10 will move, and the movement of the fiber filter cloth 10 will improve the flushing and sewage discharge effect. The implementation method in this application is that the size of the fiber filter cloth 10 is larger than the size of the opening of the second tank body 12.

[0036] In this embodiment, the first tank body 0 is placed on a concrete foundation 8.

[0037] Furthermore, the second tank body 12 includes an upper part with an inverted conical shape and a lower part with a cylindrical shape, and the lower end opening of the inverted conical shape is adapted to the size of the cylindrical part.

[0038] Based on the backwashing function of the flexible fiber filter cloth filter tank in the foregoing application, the second tank body 12 is preferably implemented as above, so as to facilitate the discharge of sewage during backwashing and avoid forming a sewage discharge dead angle.

[0039] Furthermore, the fiber filter cloth 10 is circular, and the diameter of the fiber filter cloth 10 is 1.1 - 1.2 times the diameter of the opening of the second tank body 12.

[0040] Based on the foregoing backwashing function, the fiber filter cloth 10 is preferably implemented as above, so that the fiber filter cloth 10 will shake under the water flow fluctuation, further improving the flushing effect. As Figure 1 The dotted line in the figure shows the upward arching state of the fiber filter cloth 10 during the backwashing process.

[0041] Furthermore, the fiber filter cloth 10 is connected to the outlet of the second tank body 12 through a clamp, and a water stop rubber band is arranged at the connection.

[0042] The preferred fiber filter cloth 10 is detachably connected through a clamp, and a water stop rubber band is arranged at the connection for sealing.

[0043] Furthermore, the included angle between the median line of the inverted conical shape of the second tank body 12 and the horizontal is 10° - 20°.

[0044] The above settings are made to take into account the advantages of avoiding the formation of sewage discharge dead angles and being convenient to implement.

[0045] Further, the second tank body 12 is fixedly connected to the middle of the first tank body 0 through a support frame 11. In this embodiment, a support frame 11 is welded between the second tank body 12 and the first tank body 0.

[0046] With the above settings, the water body inside the first tank body 0 is evenly distributed, which is convenient for adjustment and optimization.

[0047] Further, a drain pipe 7 is connected to the bottom of the first tank body 0, and a valve is provided on the drain pipe 7.

[0048] Further, a maintenance hole 13 is provided in the lower part of the first tank body 0 for people to enter the first tank body 0. This is convenient for maintaining the inside of the first tank body 0 and for disassembling and replacing the fiber filter cloth 10.

[0049] Further, a washing intensity regulator 6 is provided at one end of the backwash drain pipe 3 located in the water seal well 4 to adjust the washing intensity.

[0050] Further, a tee 2 is arranged inside the first tank body 0, and the water inlet pipe 9 and the backwash drain pipe 3 are connected to the inside of the second tank body 12 through the tee 2. By arranging the tee 2, the overall structure is further simplified.

[0051] Further, a water overflow weir 5 is arranged in the water seal well 4 to ensure water sealing. The elevation of the water inlet pipe 9 before accessing the first tank body 0 should be lower than the elevation of the water overflow weir 5 in the water seal well 4 to prevent air from entering the pipeline.

[0052] Working principle: There are a filtering condition and a backwashing condition during operation. During normal filtering, the valve on the water inlet pipe 9 is opened, and the valves on the drain pipe 7 and the backwashing drain pipe 3 are closed. The raw water to be treated flows into the second tank body 12 along the water inlet pipe 9 and then passes downward through the fiber filter cloth 10 for filtering. The filtered water enters the clear water area upward through the water passing spaces at the bottom and around the second tank body 12 and finally flows out of the filtering device through the water outlet pipe 1 in the clear water area, completing the filtering. In the filtering state, since the area of the fiber filter cloth 10 is larger than the opening area of the second tank body 12, it is in a natural sagging state under the dual action of gravity and water flow. When the impurities on the fiber filter cloth 10 reach a certain degree and backwashing is required. By closing the valve on the water inlet pipe 9 and opening the valve on the backwashing drain pipe 3, under the action of the height difference between the liquid level in the clear water area and the liquid level in the water seal well 4, the clear water starts to flow reversely, passing upward through the fiber filter cloth 10 to backwash the upper filtering surface of the fiber filter cloth 10. The impurities backwashed by the water flow through the backwashing drain pipe 3 and are discharged from the water seal well 4 into the drainage system. It should be noted that during backwashing, due to the scouring and jacking action of the water flow, the fiber filter cloth 10 will change from the sagging state to the arched state. The impurities attached to the upper side of the fiber filter cloth 10 are disturbed and rubbed during this sagging-to-arched movement, making them easier to wash off, further strengthening the washing effect. The average washing intensity can reach 12 - 15 L / (m 2 ·s), and the washing time can reach 3 - 5 min, which can fully meet the washing requirements of the fiber filter cloth 10. In addition, a washing intensity regulator 6 is provided at the end of the backwashing drain pipe 3, which can adjust the backwashing intensity and time according to requirements.

[0053] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. Flexible fiber filter cloth filter tank, comprising a first tank body (0), the first tank body (0) is connected with a water inlet pipe (9) and a water outlet pipe (1), a fiber filter cloth (10) is arranged in the first tank body (0) for filtering the water body entering the first tank body (0) through the water inlet pipe (9), and it is characterized in that, Inside the first tank body (0), there is also a second tank body (12) with an opening facing downwards. The fiber filter cloth (10) is arranged at the opening of the second tank body (12), and the size of the fiber filter cloth (10) is larger than the size of the opening of the second tank body (12), so that the fiber filter cloth (10) can move up and down. The water inlet pipe (9) is connected to the inside of the second tank body (12); there is also an anti-backwash drain pipe (3), and the anti-backwash drain pipe (3) connects the inside of the second tank body (12) and the outside of the first tank body (0); the anti-backwash drain pipe (3) is connected to a water seal well (4) outside the first tank body (0), and the liquid level setting position of the water seal well (4) is lower than the lowest end of the first tank body (0).

2. The flexible fiber filter cloth filter tank according to claim 1, characterized in that, The second tank body (12) includes an upper part with an inverted conical shape and a lower part with a cylindrical shape, and the lower end opening of the inverted conical shape is adapted to the size of the cylindrical part.

3. The flexible fiber filter cloth filter tank according to claim 2, characterized in that, The fiber filter cloth (10) is circular, and the diameter of the fiber filter cloth (10) is 1.1 - 1.2 times the diameter of the opening of the second tank body (12).

4. The flexible fiber filter cloth filter tank according to claim 2, characterized in that, The fiber filter cloth (10) is connected to the outlet of the second tank body (12) through a clamp, and a water stop rubber band is arranged at the connection.

5. The flexible fiber filter cloth filter tank according to claim 2, characterized in that, The middle busbar of the inverted conical shape of the second tank body (12) forms an angle of 10° - 20° with the horizontal.

6. The flexible fiber filter cloth filter tank according to claim 1, characterized in that, The second tank body (12) is fixedly connected to the middle part of the first tank body (0) through a support frame (11).

7. The flexible fiber filter cloth filter tank according to claim 1, characterized in that, A drain pipe (7) is connected to the bottom of the first tank body (0), and a valve is arranged on the drain pipe (7).

8. The flexible fiber filter cloth filter tank according to claim 1, characterized in that, A maintenance hole (13)(13) is provided at the lower part of the first tank body (0) for people to enter the first tank body (0).

9. The flexible fiber filter cloth filter tank according to claim 1, characterized in that, One end of the anti-backwash drain pipe (3) located in the water seal well (4) is provided with a flushing intensity regulator (6).

10. The flexible fiber filter cloth filter tank according to any one of claims 1-9, characterized in that, A three-way joint (2) is arranged inside the first tank body, and the water inlet pipe (9) and the anti-backwash drain pipe (3) are connected to the inside of the second tank body (12) through the three-way joint (2).

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