A biological filter water purification device

Abstract

The invention belongs to the technical field of biological filter purification, and discloses a biological filter water purification device, comprising a purification box, wherein two filter plates and a perforated plate are fixedly arranged from top to bottom in the purification box, biological filter material is filled between the two filter plates, and a water inlet pipe and a water outlet pipe are fixedly arranged outside the purification box, wherein the water inlet pipe is communicated with a space below the perforated plate in the purification box, and the water outlet pipe is communicated with a space above the two filter plates in the purification box; an aeration mechanism is also arranged on the purification box; the aeration mechanism comprises a plurality of aeration components, an exhaust pipe group and an aeration pump, the aeration pump is fixedly arranged outside the purification box, and an exhaust pipe group is connected with a plurality of aeration components at its exhaust pipe group, and the plurality of aeration components are fixedly arranged on the perforated plate; the invention can perform aeration operation through a lower aeration membrane after an upper aeration membrane is damaged, so that the upper aeration membrane does not need to be replaced in time, thereby extending the effective aeration time.

Description

Technical Field

[0001] The invention belongs to the technical field of biological filter purification, in particular to a biological filter water purification device. Background Art

[0002] In the process of sewage treatment, one of the procedures is to set up biological filter materials inside the biological filter tank, input sewage from below, and then decompose and absorb the substances in the sewage through the biological filter materials. In order to ensure the effectiveness of the biological filter materials, aeration is usually used to provide oxygen. However, the aeration membrane in the aeration device has a certain service life. Therefore, after damage occurs, it needs to be replaced in time to ensure the aeration effect. This results in the aeration membrane needing to be replaced after a certain period of time, which is rather cumbersome, so this technical problem needs to be solved. Summary of the invention

[0003] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a biological filter water purification device, which effectively solves the problem that in order to ensure the use effect of the biological filter material, oxygen is usually provided by aeration, but the aeration membrane in the aeration device has a certain service life. Therefore, after damage occurs, it needs to be replaced in time to ensure the aeration effect. This results in the aeration membrane needing to be replaced after a certain period of time, which is a rather cumbersome problem.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a biological filter tank water purification device, comprising a purification box, wherein two filter plates and a perforated plate are fixedly arranged in the purification box from top to bottom, and biological filter material is filled between the two filter plates; an inlet pipe and an outlet pipe are fixedly arranged outside the purification box, wherein the inlet pipe is connected to the space below the perforated plate in the purification box, and the outlet pipe is connected to the space above the two filter plates in the purification box; an aeration mechanism is also arranged on the purification box; the aeration mechanism comprises a plurality of aeration components, an exhaust pipe group and an aeration pump, the aeration pump is fixedly arranged outside the purification box, and its air outlet end is connected to the plurality of aeration components through the exhaust pipe group, and the plurality of aeration components are fixedly arranged on the perforated plate;

[0005] The aeration assembly comprises an aeration tube, an upper aeration membrane, a lower aeration membrane, a baffle and a central tube, wherein the aeration tube is fixedly arranged on the orifice plate and communicated with the exhaust pipe group, the upper aeration membrane is fixedly arranged on the inner top of the aeration tube, the lower aeration membrane is fixedly arranged on the inner middle part of the aeration tube through a plurality of telescopic parts, the baffle is fixedly arranged on the inner bottom of the aeration tube, the central tube is fixedly arranged at the center of the baffle, an upper connecting hole and a lower connecting hole are respectively opened on the central tube, and the interior of the aeration tube is divided into an upper cavity, a middle cavity and a lower cavity from top to bottom in sequence through the upper aeration membrane, the lower aeration membrane and the baffle; when the upper aeration membrane is in an intact state, the lower cavity is communicated with the upper cavity in sequence through the central tube and the upper connecting hole, and the lower connecting hole is in a closed state; when the upper aeration membrane is in a damaged state, the lower cavity is communicated with the middle cavity in sequence through the central tube and the lower connecting hole, and the upper connecting hole is in a closed state.

[0006] Preferably, the structure of the upper aeration membrane is the same as that of the lower aeration membrane, the upper aeration membrane comprises an outer ring body, an intermediate membrane and an inner ring body, wherein the outer ring body is fixedly arranged on the inner top of the aeration tube, the outer ring body is fixedly arranged on the inner ring body through the intermediate membrane, and the inner ring body is fixedly arranged on the outer top of the central tube; the difference is that the outer ring body on the lower aeration membrane is in sliding and sealing cooperation with the aeration tube, and the inner ring body on the lower aeration membrane is in sliding and sealing cooperation with the central tube.

[0007] Preferably, the telescopic member includes a base, a cylinder, a sliding column, a water absorption column, and a return spring, wherein the cylinder is fixedly arranged on the inner side of the aeration tube through the base, the sliding column is fixedly arranged on the lower aeration membrane, the sliding column, the water absorption column and the return spring are all movably arranged in the cylinder, and the return spring is surrounded by the sliding column, the water absorption column is located below the sliding column, and an inner through hole is formed inside the sliding column, and the space containing the water absorption column in the cylinder is connected to the middle cavity through the inner through hole.

[0008] Preferably, a filter screen is fixedly disposed inside the inner through hole, and the filter screen is located at the inner top of the inner through hole.

[0009] Preferably, an annular groove is provided in the inner ring body on the lower aeration membrane, a sealing ring is fixedly arranged in the annular groove, an inner cavity is formed in the sealing ring, the inner cavity is connected with the space in the cylinder where a return spring is arranged through a corresponding conduit, and a one-way valve is fixedly arranged at the connection between the conduit and the inner cavity.

[0010] Preferably, a shell is rotatably connected to the pipe opening of the central pipe, an impeller is fixedly arranged inside the shell, and a plurality of horizontal tubes are fixedly arranged on the outer side of the shell along the circumference thereof, and the horizontal tubes are located above the upper aeration membrane.

[0011] Preferably, a lower recoil pipe and an upper recoil pipe are fixedly provided outside the purification box, wherein the lower recoil pipe is connected to the space below the orifice plate in the purification box, and the upper recoil pipe is connected to the space above the two filter plates in the purification box.

[0012] Compared with the prior art, the present invention has the following beneficial effects:

[0013] 1. During operation, through the cooperation of the upper aeration membrane, the lower aeration membrane, the central tube and the telescopic parts, aeration operation can be performed through the upper aeration membrane under normal conditions, and when the upper aeration membrane is damaged, aeration operation can be performed through the lower aeration membrane, so that the upper aeration membrane does not need to be replaced in time, thereby extending the effective aeration time;

[0014] 2. During operation, through the cooperation of the sealing ring, the conduit and the cylinder, when the sliding column moves upward, the air in the cylinder can be transported to the inner cavity of the sealing ring through the conduit, thereby improving the sealing performance between the inner ring body and the central tube in the lower aeration membrane; at the same time, the upper connecting hole or the lower connecting hole can also be sealed through the sealing ring;

[0015] 3. During operation, through the cooperation of the impeller, shell and horizontal pipe, part of the air can be discharged through the horizontal pipe to impact the bubbles loaded on the surface of the upper aeration membrane or the lower aeration membrane, thereby preventing the bubbles generated by aeration from adhering to the surface of the upper aeration membrane or the lower aeration membrane, and can also expand the range of aeration to ensure the aeration effect;

[0016] 4. During operation, through the cooperation of the upper recoil pipe and the lower recoil pipe in the setting, the biological filter material can be cleaned by backwashing with clean water after a long period of use to ensure the use effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide further understanding of the present invention and constitute a part of the specification. They are used to explain the present invention together with the embodiments of the present invention and do not constitute a limitation of the present invention.

[0018] In the attached picture:

[0019] Figure 1 It is a schematic structural diagram of a biological filter water purification device of the present invention;

[0020] Figure 2 It is a schematic diagram of the internal structure of the purification box of the present invention;

[0021] Figure 3 This is one of the schematic diagrams of the aeration pipe installation structure of the present invention;

[0022] Figure 4 This is the second schematic diagram of the aeration pipe installation structure of the present invention;

[0023] Figure 5 It is a schematic diagram of the internal structure of the aeration tube of the present invention;

[0024] Figure 6It is a schematic diagram of the cylinder structure of the present invention;

[0025] Figure 7 It is a schematic diagram of the internal structure of the cylinder of the present invention;

[0026] Figure 8 It is a schematic diagram of the cross-sectional structure of the aeration tube of the present invention;

[0027] Fig. 9 For the present invention Figure 8 The enlarged structural diagram at A in the middle;

[0028] Fig.10 For the present invention Fig. 9 Enlarged structural diagram at B in the middle.

[0029] In the figure: 1. purification box; 2. filter plate; 3. orifice plate; 4. water inlet pipe; 5. water outlet pipe; 6. exhaust pipe group; 7. aeration pump; 8. aeration pipe; 9. upper aeration membrane; 10. lower aeration membrane; 11. partition; 12. center pipe; 13. upper connecting hole; 14. lower connecting hole; 15. upper cavity; 16. middle cavity; 17. lower cavity; 18. outer ring body; 19. intermediate membrane; 20. inner ring body; 21. base; 22. cylinder; 23. sliding column; 24. water absorption column; 25. reset spring; 26. inner through hole; 27. filter screen; 28. shell; 29. ​​impeller; 30. horizontal pipe; 31. lower recoil pipe; 32. upper recoil pipe; 33. sealing ring; 34. inner cavity; 35. catheter. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] Depend on Figure 1-Figure 10 The present invention relates to a biological filter water purification device, comprising a purification box 1, wherein two filter plates 2 and a perforated plate 3 are fixedly arranged from top to bottom in the purification box 1, and biological filter material is filled between the two filter plates 2. An inlet pipe 4 and an outlet pipe 5 are fixedly arranged outside the purification box 1, wherein the inlet pipe 4 is connected to the space below the perforated plate 3 in the purification box 1, and the outlet pipe 5 is connected to the space above the two filter plates 2 in the purification box 1; an aeration mechanism is also arranged on the purification box 1; the aeration mechanism comprises a plurality of aeration components, an exhaust pipe group 6 and an aeration pump 7, the aeration pump 7 is fixedly arranged outside the purification box 1, and its outlet end is connected to a plurality of aeration components through the exhaust pipe group 6, and the plurality of aeration components are fixedly arranged on the perforated plate 3;

[0032] With such a design, when in use, the sewage is discharged into the inner bottom of the purification box 1 through the water inlet pipe 4, and then the sewage is purified and filtered through the biological filter material between the two filter plates 2, and the treated sewage can be discharged through the outlet pipe 5. During this period, aeration is carried out by the aeration pump 7, and the air is transported to the interior of each aeration component through the exhaust pipe group 6 and then discharged, thereby providing sufficient oxygen for the biological filter material to ensure the purification effect of the biological filter material on sewage.

[0033] However, the aeration membrane in the aeration mechanism will be damaged after a long period of use, and it needs to be replaced, which makes it impossible to continue the aeration operation, thereby reducing the aeration effect. Therefore, it is necessary to solve this technical problem. The following technical solutions are now provided:

[0034] The aeration assembly includes an aeration tube 8, an upper aeration membrane 9, a lower aeration membrane 10, a baffle 11 and a central tube 12, wherein the aeration tube 8 is fixedly arranged on the orifice plate 3 and communicated with the exhaust pipe group 6, the upper aeration membrane 9 is fixedly arranged on the inner top of the aeration tube 8, the lower aeration membrane 10 is fixedly arranged on the inner middle part of the aeration tube 8 through a plurality of telescopic parts, the baffle 11 is fixedly arranged on the inner bottom of the aeration tube 8, the central tube 12 is fixedly arranged at the center of the baffle 11, and the central tube 12 is respectively provided with an upper connecting hole 13 and a lower connecting hole 14. The interior of the aeration tube 8 is divided into an upper cavity 15, a middle cavity 16 and a lower cavity 17 from top to bottom by the upper aeration membrane 9, the lower aeration membrane 10 and the partition 11; when the upper aeration membrane 9 is in good condition, the lower cavity 17 is connected with the upper cavity 15 through the central tube 12 and the upper connecting hole 13, and the lower connecting hole 14 is in a closed state; when the upper aeration membrane 9 is damaged, the lower cavity 17 is connected with the middle cavity 16 through the central tube 12 and the lower connecting hole 14, and the upper connecting hole 13 is in a closed state;

[0035] In this design, when the upper aeration membrane 9 is in good condition, the aeration pump 7 delivers air to the lower cavity 17 in the aeration pipe 8 through the exhaust pipe group 6, and then enters the upper cavity 15 through the central tube 12 and the upper connecting hole 13 in turn, and finally is discharged through the upper aeration membrane 9 for aeration operation. At this time, the inner side of the lower aeration membrane 10 seals the lower connecting hole 14 on the central tube 12.

[0036] When the upper aeration membrane 9 is damaged, the sewage enters the upper cavity 15 in the aeration pipe 8 and then enters the interior of the telescopic member. After the telescopic member absorbs water, its overall length changes, thereby driving the lower aeration membrane 10 to move upward. After the displacement is completed, the inner side of the lower aeration membrane 10 no longer seals the lower connecting hole 14, but seals the upper connecting hole 13. At this time, the air in the lower cavity 17 in the aeration pipe 8 can enter the interior of the middle cavity 16 through the central tube 12 and the lower connecting hole 14, and then aeration is performed through the lower aeration membrane 10, so that there is no need to replace the upper aeration membrane 9, thereby extending the service life.

[0037] Specifically, the structure of the upper aeration membrane 9 is the same as that of the lower aeration membrane 10. The upper aeration membrane 9 includes an outer ring body 18, an intermediate membrane 19 and an inner ring body 20, wherein the outer ring body 18 is fixedly arranged on the inner top of the aeration tube 8, the outer ring body 18 is fixedly arranged with the inner ring body 20 through the intermediate membrane 19, and the inner ring body 20 is fixedly arranged on the outer top of the central tube 12; the difference is that the outer ring body 18 on the lower aeration membrane 10 is in sliding sealing cooperation with the aeration tube 8, and the inner ring body 20 on the lower aeration membrane 10 is in sliding sealing cooperation with the central tube 12;

[0038] With this design, the outer ring body 18 on the lower aeration membrane 10 can be driven to move longitudinally by the telescopic member, and the inner ring body 20 on the lower aeration membrane 10 can be used in sealing cooperation with the upper connecting hole 13 and the lower connecting hole 14 .

[0039] Specifically, the telescopic member includes a base 21, a cylinder 22, a slide column 23, a water absorption column 24, and a return spring 25, wherein the cylinder 22 is fixedly arranged on the inner side of the aeration tube 8 through the base 21, the slide column 23 is fixedly arranged on the lower aeration membrane 10, the slide column 23, the water absorption column 24 and the return spring 25 are all movably arranged in the cylinder 22, and the return spring 25 surrounds the slide column 23, the water absorption column 24 is located below the slide column 23, and an inner through hole 26 is formed inside the slide column 23, and the space containing the water absorption column 24 in the cylinder 22 is connected with the middle cavity 16 through the inner through hole 26;

[0040] With such a design, when sewage enters the bottom of the cylinder 22 through the inner through hole 26 and contacts the water absorption column 24, the volume of the water absorption column 24 changes after absorbing water and squeezes the slide column 23, so that the slide column 23 overcomes the resistance of the return spring 25 and moves upward, thereby causing the slide column 23 to drive the outer ring body 18 on the lower aeration membrane 10 to move upward.

[0041] Specifically, a filter screen 27 is fixedly disposed inside the inner through hole 26 , and the filter screen 27 is located at the inner top of the inner through hole 26 ; such a design can prevent foreign matter in sewage from entering the inner through hole 26 .

[0042] Furthermore, an annular groove is provided in the inner ring body 20 on the lower aeration membrane 10, a sealing ring 33 is fixedly provided in the annular groove, an inner cavity 34 is formed in the sealing ring 33, the inner cavity 34 is connected to the space in the cylinder 22 where the return spring 25 is provided through a corresponding conduit 35, and a one-way valve is fixedly provided at the connection point between the conduit 35 and the inner cavity 34;

[0043] With this design, the upper connecting hole 13 or the lower connecting hole 14 can be sealed by the sealing ring 33; when the sliding column 23 moves upward in the cylinder 22, the space where the return spring 25 is arranged in the cylinder 22 gradually decreases, and the air therein can enter the inner cavity 34 in the sealing ring 33 through the conduit 35 and the one-way valve, thereby increasing the volume of the inner cavity 34 to improve the sealing performance of the sealing ring 33 when in use.

[0044] Furthermore, a shell 28 is rotatably connected to the pipe opening of the central pipe 12, an impeller 29 is fixedly arranged inside the shell 28, and a plurality of horizontal pipes 30 are fixedly arranged on the outer side of the shell 28 along its circumference, and the horizontal pipes 30 are located above the upper aeration membrane 9; a one-way valve is fixedly arranged at the pipe opening of the horizontal pipe 30;

[0045] With such a design, when in use, part of the air is discharged from the inside of the central tube 12 to the inside of the shell 28, and blows the impeller 29, so that the impeller 29 drives the shell 28 to rotate, and the air flow in the central tube 12 passes through the shell 28 and then is discharged through the horizontal tube 30. The air flow discharged through the horizontal tube 30 impacts and disperses the bubbles attached to the surface of the upper aeration membrane 9 or the lower aeration membrane 10, thereby preventing the bubbles from attaching to the surface of the upper aeration membrane 9 or the lower aeration membrane 10, and further improving the aeration effect.

[0046] Specifically, a lower recoil pipe 31 and an upper recoil pipe 32 are fixedly arranged outside the purification box 1, wherein the lower recoil pipe 31 is connected to the space below the orifice plate 3 in the purification box 1, and the upper recoil pipe 32 is connected to the space above the two filter plates 2 in the purification box 1;

[0047] With such a design, when the biological filter material needs to be backwashed, clean water only needs to be introduced through the upper backwash pipe 32, the biological filter material is backwashed by the clean water, and finally discharged through the upper backwash pipe 32.

[0048] It should be noted that the water inlet pipe 4 , the water outlet pipe 5 , the lower backwash pipe 31 and the upper backwash pipe 32 are all equipped with valves so as to be opened or closed when needed.

[0049] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0050] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A biological filter water purification device, comprising a purification box (1), wherein two filter plates (2) and a perforated plate (3) are fixedly arranged in the purification box (1) from top to bottom, respectively, and biological filter material is filled between the two filter plates (2); an inlet pipe (4) and an outlet pipe (5) are fixedly arranged outside the purification box (1), respectively, wherein the inlet pipe (4) is connected to the space below the perforated plate (3) in the purification box (1), and the outlet pipe (5) is connected to the space above the two filter plates (2) in the purification box (1); an aeration mechanism is also arranged on the purification box (1); the aeration mechanism comprises a plurality of aeration components, an exhaust pipe group (6) and an aeration pump (7), wherein the aeration pump (7) is fixedly arranged outside the purification box (1) and its exhaust end is connected to the plurality of aeration components through the exhaust pipe group (6), respectively, and the plurality of aeration components are fixedly arranged on the perforated plate (3); It is characterized in that The aeration assembly comprises an aeration pipe (8), an upper aeration membrane (9), a lower aeration membrane (10), a baffle (11) and a central pipe (12), wherein the aeration pipe (8) is fixedly arranged on the orifice plate (3) and is connected to the exhaust pipe group (6), the upper aeration membrane (9) is fixedly arranged on the inner top of the aeration pipe (8), the lower aeration membrane (10) is fixedly arranged on the inner middle part of the aeration pipe (8) via a plurality of telescopic parts, the baffle (11) is fixedly arranged on the inner bottom of the aeration pipe (8), the central pipe (12) is fixedly arranged at the center of the baffle (11), and the central pipe (12) is respectively provided with an upper connecting hole (13) and a lower connecting hole (13). (14), the interior of the aeration tube (8) is divided into an upper cavity (15), a middle cavity (16) and a lower cavity (17) from top to bottom by an upper aeration membrane (9), a lower aeration membrane (10) and a baffle (11); when the upper aeration membrane (9) is in good condition, the lower cavity (17) is connected to the upper cavity (15) by the central tube (12) and the upper connecting hole (13) in sequence, and the lower connecting hole (14) is in a closed state; when the upper aeration membrane (9) is damaged, the lower cavity (17) is connected to the middle cavity (16) by the central tube (12) and the lower connecting hole (14) in sequence, and the upper connecting hole (13) is in a closed state; The outer ring body (18) on the lower aeration membrane (10) is in sliding and sealing cooperation with the aeration pipe (8), and the inner ring body (20) on the lower aeration membrane (10) is in sliding and sealing cooperation with the central pipe (12); The telescopic member comprises a base (21), a cylinder (22), a sliding column (23), a water absorption column (24), and a return spring (25), wherein the cylinder (22) is fixedly arranged on the inner side of the aeration pipe (8) through the base (21), the sliding column (23) is fixedly arranged on the lower aeration membrane (10), the sliding column (23), the water absorption column (24), and the return spring (25) are all movably arranged in the cylinder (22), and the return spring (25) surrounds the sliding column (23), the water absorption column (24) is located below the sliding column (23), and an inner through hole (26) is formed inside the sliding column (23), and the space containing the water absorption column (24) in the cylinder (22) is connected to the middle cavity (16) through the inner through hole (26).

2. A biological filter water purification device according to claim 1, characterized in that: The structure of the upper aeration membrane (9) is the same as that of the lower aeration membrane (10), and the upper aeration membrane (9) comprises an outer ring body (18), an intermediate membrane (19), and an inner ring body (20), wherein the outer ring body (18) is fixedly arranged on the inner top of the aeration tube (8), the outer ring body (18) is fixedly arranged with the inner ring body (20) via the intermediate membrane (19), and the inner ring body (20) is fixedly arranged on the outer top of the central tube (12).

3. The biofilter water purification device according to claim 1, characterized in that: A filter screen (27) is fixedly disposed inside the inner through hole (26), and the filter screen (27) is located at the inner top of the inner through hole (26).

4. The biofilter water purification device according to claim 1, characterized in that: An annular groove is formed in the inner ring body (20) on the lower aeration membrane (10), a sealing ring (33) is fixedly arranged in the annular groove, an inner cavity (34) is formed in the sealing ring (33), the inner cavity (34) is connected to a space in the cylinder (22) where a return spring (25) is arranged through a corresponding conduit (35), and a one-way valve is fixedly arranged at the connection point between the conduit (35) and the inner cavity (34).

5. A biological filter water purification device according to claim 4, characterized in that: A shell (28) is rotatably connected to the pipe opening of the central pipe (12), an impeller (29) is fixedly arranged inside the shell (28), and a plurality of horizontal pipes (30) are fixedly arranged on the outer side of the shell (28) along its circumference, and the horizontal pipes (30) are located above the upper aeration membrane (9).

6. A biological filter water purification device according to claim 1, characterized in that: A lower recoil pipe (31) and an upper recoil pipe (32) are fixedly arranged outside the purification box (1), wherein the lower recoil pipe (31) is connected to the space below the orifice plate (3) in the purification box (1), and the upper recoil pipe (32) is connected to the space above the two filter plates (2) in the purification box (1).

Images