Deep bed filtering device

Abstract

The utility model discloses a deep bed filtering device in the technical field of filtering devices, which comprises a deep filtering cylinder body, a water outlet cylinder is welded at the bottom end of the deep filtering cylinder body, and a porous bottom supporting plate is welded at the bottom end in the deep filtering cylinder body. Cleaning fluid is guided into the pressurizing tank through the delivery pipes on one side of the deep filter cylinder and the pump body, fluid flows in one direction through the one-way valve connected to the pump body, fluid back flushing is avoided, pressurizing is conducted through the pressurizing tank with the overall height increased and the diameter decreased progressively, and the pressurizing tank is guided into the deep filter cylinder through the cleaning pipe at the bottom. The guided-in high-pressure liquid is used for backwashing the multiple layers of filter materials through the bottom end, impurities generated by reverse impact of the multiple layers of filter materials are concentrated in a space formed among the multiple groups of middle supporting plates, after backwashing is completed, sealing valves on the multiple guide-out pipes are opened, washing fluid drives cleaning impurities to be guided out, meanwhile, one side of the high-pressure fluid is guided out through the side pipe, and the other side of the high-pressure fluid is guided out; sundries among the multiple groups of middle supporting plates are flushed from the side surface of a water body, so that back flushing is more thorough.

Description

Technical Field

[0001] The utility model relates to the technical field of filtering devices, in particular to a deep bed filtering device. Background Art

[0002] Deep bed filters are usually used for removing suspended solids in water treatment. Single-layer homogeneous filter media or multi-layer filter media filters have a relatively deeper filter bed compared to traditional rapid filters, and are mostly down-flow gravity filters. The filter media is natural quartz sand, and the multi-layer filter media is anthracite, quartz sand, garnet, etc. The particle size of each filter media is arranged in the order of small on top and large at the bottom. When the hydraulic load and nitrate volume load are properly designed, the deep bed filter can also have the function of denitrification and nitrogen removal, synchronously removing suspended solids and nitrates.

[0003] However, most of the existing deep bed filtering devices vertically lay multiple layers of filter media through a deep pool. During long-term filtering operations, blockages are caused in the pores of the filter media. Ordinary backwashing operations simply perform backwashing by pressurizing from the bottom. Due to the blockage of filtering particles between filter media of different particle sizes, the blockage cannot be completely cleared from the filter media, and the blockage between filter media is not conveniently exported, and is easily blocked by the upper filter media, resulting in poor cleaning effect. Based on this, the utility model designs a deep bed filtering device to solve the above problems. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a deep bed filtering device to solve the problems in the above-mentioned ordinary backwashing operation, which simply performs backwashing by pressurizing from the bottom. Due to the blockage of filtering particles between filter media of different particle sizes, the blockage cannot be completely cleared from the filter media, and the blockage between filter media is not conveniently exported.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A deep bed filtration device includes a deep filtration cylinder body. The bottom end of the deep filtration cylinder body is welded with a water outlet cylinder. A porous bottom support plate is welded at the inner bottom end of the deep filtration cylinder body. Multiple layers of filter materials with decreasing diameters are stacked and placed on the upper end of the bottom support plate. Multiple groups of porous middle support plates are installed inside the deep filtration cylinder body. The multiple groups of middle support plates are arranged between the multiple layers of filter materials. A plurality of support rings are installed between the multiple groups of middle support plates. A plurality of outlet pipes are welded on one side of the deep filtration cylinder body. The plurality of outlet pipes are matched with the multiple groups of middle support plates. A sealing valve is connected to the outlet pipe. A pump body is fixedly installed on the other side of the deep filtration cylinder body. The liquid outlet end of the pump body is connected with a one-way valve. The one-way valve is connected to a pressure tank through a pipeline. The upper end of the pressure tank has a larger diameter than the lower end. The liquid outlet end of the pressure tank is connected with a cleaning pipe. The liquid outlet end of the cleaning pipe is arranged at the bottom end of the deep filtration cylinder body. A side pipe is connected to the cleaning pipe. The liquid outlet end of the side pipe faces one side of the multiple groups of middle support plates. A sealing device is installed inside the water outlet cylinder. Support plates are fixedly welded on both sides of the deep filtration cylinder body.

[0007] As a further scheme of the present utility model: An expansion cover is welded on the upper end of the deep filtration cylinder body. The diameter of the expansion cover is larger than that of the deep filtration cylinder body.

[0008] As a further scheme of the present utility model: The inside of the support ring is hollow. A plurality of water permeable holes are opened on the support ring.

[0009] As a further scheme of the present utility model: Connecting rings are welded between the plurality of support rings. The connecting ring is circular.

[0010] As a further scheme of the present utility model: The sealing device includes a sealing block. Limit plates are welded inside both the deep filtration cylinder body and the water outlet cylinder. The sealing block is vertically and limitably installed on the limit plate inside the deep filtration cylinder body. A screw rod is threadedly connected to the limit plate inside the water outlet cylinder. One end of the screw rod is rotationally clamped at the bottom of the sealing block.

[0011] As a further scheme of the present utility model: A conical groove is opened inside the water outlet cylinder. The sealing block is conical and is matched with the conical groove of the water outlet cylinder.

[0012] As a further scheme of the present utility model: The screw rod is arranged on the central axis of the sealing block. The length of the screw rod is greater than the vertical moving stroke of the sealing block.

[0013] Compared with the prior art, the beneficial effects of the present utility model are:

[0014] 1. In the utility model, the pump body introduces the cleaning fluid into the pressure tank through multiple outlet pipes on one side of the deep filter cylinder body. The one-way valve connected to the pump body allows the fluid to flow in one direction to avoid fluid backwashing. The pressure tank is pressurized by raising the overall height and decreasing the diameter. The pressure tank is introduced through the cleaning pipe at the bottom. The introduced high-pressure liquid backwashes the multi-layer filter material through the bottom. The debris impacted by the multi-layer filter material is concentrated in the space formed between the multiple groups of center support plates. After the backwashing is completed, the sealing valves on the multiple outlet pipes are opened to allow the flushing fluid to drive the cleaning impurities to be discharged. At the same time, the side pipe discharges one side of the high-pressure fluid to allow the water body to side-wash the debris between the multiple groups of center support plates, so that the backwashing is more thorough, the backwashing effect is better, and the overall deep filtering effect of the device is improved.

[0015] 2. In the utility model, a sealing block is installed vertically through a limiting plate inside the deep filter cartridge body, a screw is threadedly connected to the limiting plate inside the water outlet cylinder, one end of the screw is rotatably clamped at the bottom of the sealing block, the screw is threadedly connected through the limiting plate in the water outlet cylinder, the sealing block is supported by the screw, the limiting plate at the bottom end of the deep filter cartridge body vertically limits the sealing block, the sealing block is driven by the screw and vertically jammed in the water outlet cylinder, the water outlet of the water outlet cylinder is sealed to avoid fluid leakage after backwashing. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a schematic diagram of the overall explosion structure of the utility model;

[0018] Figure 3 For the utility model Figure 2 The enlarged structural diagram at A in the middle;

[0019] Figure 4 It is a rear-view stereoscopic structural schematic diagram of the utility model;

[0020] Figure 5 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0021] In the figure: 1. deep filter cylinder; 2. water outlet cylinder; 3. expansion cover; 4. bottom support plate; 5. middle support plate; 6. support ring; 7. water permeable hole; 8. connecting ring; 9. pump body; 10. one-way valve; 11. pressurized tank; 12. cleaning pipe; 13. side pipe; 14. outlet pipe; 15. sealing valve; 16. limit plate; 17. sealing block; 18. screw; 19. support plate. DETAILED DESCRIPTION

[0022] The following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0023] Embodiment:

[0024] Please refer to Figures 1 - 5, in the embodiment of the present utility model, a deep bed filtration device includes a deep filtration cylinder body 1. A water outlet cylinder 2 is welded to the bottom end of the deep filtration cylinder body 1. A porous bottom support plate 4 is welded to the inner bottom end of the deep filtration cylinder body 1. Multiple layers of filter media with decreasing diameters are stacked and placed on the upper end of the bottom support plate 4. Multiple groups of porous middle support plates 5 are installed inside the deep filtration cylinder body 1. The multiple groups of middle support plates 5 are arranged between the multiple layers of filter media. Multiple support rings 6 are installed between the multiple groups of middle support plates 5. Multiple outlet pipes 14 are welded to one side of the deep filtration cylinder body 1. The multiple outlet pipes 14 are matched with the multiple groups of middle support plates 5. A sealing valve 15 is connected to the outlet pipe 14. A pump body 9 is fixedly installed on the other side of the deep filtration cylinder body 1. A one-way valve 10 is connected to the liquid outlet end of the pump body 9. The one-way valve 10 is connected to a pressure boosting tank 11 through a pipeline. The upper end diameter of the pressure boosting tank 11 is larger than the lower end diameter. A cleaning pipe 12 is connected to the liquid outlet end of the pressure boosting tank 11. The liquid outlet end of the cleaning pipe 12 is arranged at the bottom end of the deep filtration cylinder body 1. A side pipe 13 is connected to the cleaning pipe 12. The liquid outlet end of the side pipe 13 faces one side of the multiple groups of middle support plates 5. A sealing device is installed inside the water outlet cylinder 2. Support plates 19 are fixedly welded to both sides of the deep filtration cylinder body 1. The bottom support plate 4 is welded to the bottom end of the deep filtration cylinder body 1. The upper end multi-layer filter media is supported by the bottom support plate 4. Multiple groups of middle support plates 5 are installed between different filter media. Filtering wastewater is introduced into the deep filtration cylinder body 1 with an open upper end. Different diameter filtration is carried out through multiple layers of filter media with decreasing pore diameters to achieve thorough filtration and nitrification treatment. The multiple groups of middle support plates 5 form an isolation between the multiple layers. Multiple support rings 6 are installed between the multiple groups of middle support plates 5 to form a space between the multiple groups of middle support plates 5. A pump body 9 is fixedly installed on one side of the deep filtration cylinder body 1. When cleaning is required, the water outlet cylinder 2 is sealed through the sealing device. The multiple outlet pipes 14 on one side of the deep filtration cylinder body 1. The pump body 9 introduces the cleaning fluid into the pressure boosting tank 11. The one-way valve 10 connected to the pump body 9 enables the one-way flow of the fluid to avoid fluid backwashing. Pressure is increased through the pressure boosting tank 11 with an increasing overall height and decreasing diameter. The pressure boosting tank 11 is introduced through the cleaning pipe 12 at the bottom. The introduced high-pressure liquid performs backwashing on the multiple layers of filter media from the bottom end. The impurities impacted by the multiple layers of filter media are concentrated in the space formed between the multiple groups of middle support plates 5. After the backwashing is completed, the sealing valves 15 on the multiple outlet pipes 14 are opened to allow the flushing fluid to drive and export the cleaning impurities. At the same time, the side pipe 13 exports the high-pressure fluid on one side to flush the impurities between the multiple groups of middle support plates 5 from the side of the water body, making the backwashing more thorough and the backwashing effect better, and improving the overall deep filtration effect of the device.

[0025] Preferably, as Figure 1 shown, an expansion hood 3 is welded to the upper end of the deep filtration cylinder body 1. The diameter of the expansion hood 3 is larger than the diameter of the deep filtration cylinder body 1. Welding the expansion hood 3 to the upper end of the deep filtration cylinder body 1 can increase the capacity of the filtering wastewater, increase the deep filtration water pressure at the same time, improve the deep filtration effect, and the expansion hood 3 with a larger diameter is convenient for the introduction of wastewater.

[0026] Preferably, as Figure 2 and Figure 3As shown, the interior of the support ring 6 is hollow, and a plurality of water-permeable holes 7 are provided on the support ring 6. The hollow support ring 6 cooperates with the plurality of water-permeable holes 7 to ensure the liquid circulation efficiency and remove debris after the water body is backwashed.

[0027] Preferably, as Figure 2 shown, a connecting ring 8 is welded between the plurality of support rings 6. The connecting ring 8 is circular. The circular connecting ring 8 is welded between the plurality of support rings 6 for fixed connection to position between the plurality of support rings 6 and prevent the offset of the support ring 6.

[0028] Preferably, as Figure 2 and Figure 5 shown, the sealing device includes a sealing block 17. Limit plates 16 are welded inside both the deep filter cylinder body 1 and the water outlet cylinder 2. The sealing block 17 is vertically and limit-mounted on the limit plate 16 inside the deep filter cylinder body 1. A screw rod 18 is threadedly connected to the limit plate 16 inside the water outlet cylinder 2. One end of the screw rod 18 is rotationally clamped at the bottom of the sealing block 17. In the water outlet cylinder 2, the screw rod 18 is threadedly connected to the limit plate 16 to support the sealing block 17 through the screw rod 18. The limit plate 16 at the bottom end of the deep filter cylinder body 1 vertically limits the sealing block 17. The sealing block 17 is driven by the screw rod 18 and vertically plugged into the water outlet cylinder 2 to seal the water outlet of the water outlet cylinder 2 and prevent fluid leakage after backwashing.

[0029] Preferably, as Figure 5 shown, a conical groove is provided inside the water outlet cylinder 2. The sealing block 17 is conical and matches the conical groove of the water outlet cylinder 2. The conical groove inside the water outlet cylinder 2 cooperates with the conical sealing block 17 for tight sealing, and the sealing effect is good.

[0030] Preferably, as Figure 5 shown, the screw rod 18 is arranged on the central axis of the sealing block 17, and the length of the screw rod 18 is greater than the vertical movement stroke of the sealing block 17. The screw rod 18 on the central axis supports the middle part of the sealing block 17, enabling the screw rod 18 to stably support the sealing block 17. The longer screw rod 18 supports the sealing block 17 in the vertical height to avoid obstructing the discharge of the filtered water body.

[0031] The working principle of the present utility model is as follows: Connect the electrical equipment of the device to an external power source. Weld a bottom support plate 4 at the bottom end of the deep filter cylinder 1, and support the upper-layer filter media through the bottom support plate 4. Install multiple groups of middle support plates 5 between different filter media. Introduce the filtered wastewater into the deep filter cylinder 1 with an open upper end, and perform filtration of different diameters through multiple layers of filter media with gradually decreasing pore diameters to achieve thorough filtration and nitrification treatment. The multiple groups of middle support plates 5 form an isolation between the multiple layers of filters. Install multiple support rings 6 between the multiple groups of middle support plates 5 to form a space between the multiple groups of middle support plates 5. Fix a pump body 9 on one side of the deep filter cylinder 1. When cleaning is required, seal the water outlet cylinder 2 through a sealing device. There are multiple outlet pipes 14 on one side of the deep filter cylinder 1. The pump body 9 introduces the cleaning fluid into the pressure tank 11. The one-way valve 10 connected to the pump body 9 enables the one-way flow of the fluid to prevent fluid backflow. Increase the pressure through the pressure tank 11 with an increasing overall height and decreasing diameter. The pressure tank 11 is introduced through the cleaning pipe 12 at the bottom. The introduced high-pressure liquid performs backwashing on the multiple layers of filter media from the bottom end. The sundries impacted by the multiple layers of filter media are concentrated in the space formed between the multiple groups of middle support plates 5. After the backwashing is completed, open the sealing valves 15 on the multiple outlet pipes 14 to let the flushing fluid drive the cleaning impurities out. At the same time, the side pipe 13 exports the high-pressure fluid on one side to flush the sundries between the multiple groups of middle support plates 5 from the side, making the backwashing more thorough and the backwashing effect better, and improving the overall deep filtration effect of the device.

[0032] The above is only the preferred specific implementation manner of the present utility model, but the protection scope of the present utility model is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present utility model, according to the technical solution of the present utility model and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present utility model.

Claims

1. A deep bed filtration device, comprising a deep filtration cylinder body (1), and a water outlet cylinder (2) is welded to the bottom end of the deep filtration cylinder body (1), characterized in that: A porous bottom support plate (4) is welded to the inner bottom end of the deep filtration cylinder body (1). Multiple layers of filter media with decreasing diameters are stacked and placed on the upper end of the bottom support plate (4). Multiple groups of porous middle support plates (5) are installed inside the deep filtration cylinder body (1). The multiple groups of middle support plates (5) are arranged between the multiple layers of filter media. Multiple support rings (6) are installed between the multiple groups of middle support plates (5). Multiple outlet pipes (14) are welded to one side of the deep filtration cylinder body (1). The multiple outlet pipes (14) are matched with the multiple groups of middle support plates (5). A sealing valve (15) is connected to the outlet pipe (14). A pump body (9) is fixedly installed on the other side of the deep filtration cylinder body (1). The liquid outlet end of the pump body (9) is connected with a one-way valve (10). The one-way valve (10) is connected to a pressure tank (11) through a pipeline. The upper end diameter of the pressure tank (11) is larger than the lower end diameter. The liquid outlet end of the pressure tank (11) is connected with a cleaning pipe (12). The liquid outlet end of the cleaning pipe (12) is arranged at the bottom end of the deep filtration cylinder body (1). A side pipe (13) is connected to the cleaning pipe (12). The liquid outlet end of the side pipe (13) faces one side of the multiple groups of middle support plates (5). A sealing device is installed inside the water outlet cylinder (2). Support plates (19) are fixedly welded to both sides of the deep filtration cylinder body (1).

2. The deep bed filtration device according to claim 1, characterized in that: An expansion hood (3) is welded to the upper end of the deep filtration cylinder body (1). The diameter of the expansion hood (3) is larger than the diameter of the deep filtration cylinder body (1).

3. A deep bed filtration device according to claim 1, characterized in that: The inside of the support ring (6) is hollow. Multiple water permeable holes (7) are opened on the support ring (6).

4. The deep bed filtration device according to claim 3, characterized in that: Connection rings (8) are welded between the multiple support rings (6). The connection ring (8) is circular.

5. The deep bed filtration device according to claim 1, characterized in that: The sealing device includes a sealing block (17). Limit plates (16) are welded inside both the deep filtration cylinder body (1) and the water outlet cylinder (2). The sealing block (17) is vertically and limitedly installed on the limit plate (16) inside the deep filtration cylinder body (1). A screw rod (18) is threadedly connected to the limit plate (16) inside the water outlet cylinder (2). One end of the screw rod (18) is rotationally clamped to the bottom of the sealing block (17).

6. The deep bed filtration device according to claim 5, characterized in that: A conical groove is opened inside the water outlet cylinder (2). The sealing block (17) is conical and matches the conical groove of the water outlet cylinder (2).

7. A deep bed filtration device according to claim 5, characterized in that: The screw rod (18) is arranged on the central axis of the sealing block (17). The length of the screw rod (18) is greater than the vertical movement stroke of the sealing block (17).

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