Urban sewage treatment ultrafiltration membrane guided filtration equipment

Abstract

The invention discloses ultrafiltration membrane guided filtration equipment for urban sewage treatment, and belongs to the field of sewage treatment. The invention relates to ultrafiltration membrane guide filtering equipment for urban sewage treatment, which comprises a plurality of filtering tanks, and further comprises a sealing cover, a water inlet pipe, a water outlet pipe and a water outlet pipe, a bottom plate and a top plate are arranged in the filtering tank, and a plurality of fixed barrels are fixedly connected between the bottom plate and the top plate; the filter membrane is arranged on the outer side of the fixed barrel; a first cavity is formed between the filtering tank and the filtering membrane; a second cavity is formed between the sealing cover and the top plate; the first water supply pipe is communicated with the first cavity; the filtering effect and later cleaning of the filtering membrane are effectively prevented from being affected by excessive impurities attached to the filtering membrane, meanwhile, the filtering membrane can be cleaned without disassembly, and the cleaning efficiency of the filtering membrane is effectively improved.

Description

Technical Field

[0001] The invention relates to the technical field of sewage treatment, in particular to an ultrafiltration membrane guided filtration device for urban sewage treatment. Background Art

[0002] Urban sewage refers to domestic sewage, industrial wastewater and runoff sewage within the urban area. It is generally collected by urban pipes and discharged into the water body after being treated in urban sewage treatment plants. In sewage treatment, preliminary filtration, biological treatment and other steps are generally used for its preliminary treatment, and finally it is finely treated. Fine treatment generally requires the use of ultrafiltration membrane-guided filtration equipment. Ultrafiltration membrane water treatment uses the microporous screening function on the surface of the ultrafiltration membrane to intercept colloids, particles and relatively high molecular weight substances in the water, thereby achieving the effect of purifying the original liquid.

[0003] The current ultrafiltration membrane guided filtration equipment uses multiple fixed barrels with filter membranes installed in the filter tank. Impurities and small particles will enter the micropores. When cleaning them, the filter tank needs to be disassembled to clean the filter membrane, which has low fine efficiency. Summary of the invention

[0004] The technical problem to be solved by the present invention is to overcome the deficiencies of the prior art and provide an ultrafiltration membrane guided filtration device for urban sewage treatment that can overcome the above problems or at least partially solve the above problems.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] An ultrafiltration membrane guided filtration device for urban sewage treatment, comprising: a plurality of filter tanks, and also comprising: a sealing cover, which is threadedly connected to the upper end of the filter tank; a bottom plate and a top plate are arranged in the filter tank, and a plurality of fixed barrels are fixedly connected between the bottom plate and the top plate; a filter membrane, which is arranged on the outer side of the fixed barrel; a first cavity is arranged between the filter tank and the filter membrane, and a second cavity is arranged between the sealing cover and the top plate; a first water supply pipe connected to the first cavity; a first drainage pipe connected to the second cavity, which is arranged on the sealing cover; a sewage discharge assembly, which is arranged at the lower end of the filter tank; a threaded sleeve, which is arranged in the fixed barrel; an annular cavity, which is arranged in the threaded sleeve; a driving assembly for driving the threaded sleeve to reciprocate in the fixed barrel; a plurality of nozzles, which are opened on the threaded sleeve; a hose, which is fixedly arranged on the threaded sleeve and the hose is connected to the annular cavity; a water supply assembly for supplying water to the hose; a controller, which is fixedly arranged on the filter tank.

[0007] Preferably, it also includes a water supply pump, multiple first water supply pipes are connected through a second water supply pipe, the water supply end of the water supply pump is connected to one end of the second water supply pipe, and multiple first drain pipes are connected through the second drain pipe.

[0008] In order to facilitate the discharge of cleaned sewage, the sewage discharge component further includes a first sealing ring fixedly arranged at the lower end of the filter tank, a plurality of connecting ports are arranged between the first sealing ring and the first cavity, a first sewage suction pipe is fixedly connected to the first sealing ring, a plurality of the first sewage suction pipes are connected through a second sewage suction pipe, and a sewage pump is fixedly connected to one end of the second sewage suction pipe.

[0009] In order to facilitate the reciprocating movement of the threaded sleeve, the driving assembly further includes a screw that is sealed and rotated in the base plate, the screw is rotatably arranged in a fixed barrel, a first motor matching the screw is fixedly connected to the base plate, a limiting rod is symmetrically arranged in the fixed barrel, and the threaded sleeve seals and slides on the limiting rod, the threaded sleeve is threadedly connected to the screw, and a connecting plate is fixedly connected between the two limiting rods.

[0010] In order to facilitate the water supply to the hose, the water supply assembly further includes a second sealing ring that is sealed and rotated in the filter tank, a first cleaning pipe that is connected to the second sealing ring is fixedly connected to one side of the filter tank, a plurality of first cleaning pipes are connected through the second cleaning pipe, a cleaning water pump is provided at one end of the second cleaning pipe, and one end of the hose is connected to the second sealing ring.

[0011] In order to facilitate uniform pressure on the filter membrane, a fixed tube is further fixedly connected between the bottom plate and the top plate, and the fixed tube is coaxially arranged with the bottom plate. A plurality of water permeable openings are opened on the fixed tube, and the water permeable openings are connected to the first cavity, and the first water supply pipe is connected to the fixed tube.

[0012] Preferably, the first water supply pipe is fixedly connected to the sealing cover, and one end of the first water supply pipe is threadedly and sealingly connected to the fixed pipe.

[0013] In order to facilitate turbulence of sewage in the first cavity, further, a second motor is fixedly connected to the bottom of the filter tank, and the output end of the second motor is fixedly connected to the bottom plate, and the bottom plate and the top plate are both sealed and rotatably connected to the filter tank.

[0014] In order to facilitate the self-rotation of the fixed barrel, further, an internal gear is fixedly connected inside the filter tank, and a plurality of external gears are rotatably arranged on the top plate. The internal gears are meshed with the external gears, and the external gears are fixedly connected to the fixed barrel.

[0015] In order to facilitate the detection of the water level in the first cavity, further, a water level sensor and a pressure gauge are fixedly connected to the lower side of the top plate.

[0016] Compared with the prior art, the present invention provides an ultrafiltration membrane guided filtration device for urban sewage treatment, which has the following beneficial effects:

[0017] 1. The ultrafiltration membrane guided filtration equipment for urban sewage treatment controls the first motor to start through the controller. The first motor drives the threaded sleeve to reciprocate in the fixed barrel through the screw rod, and supplies water to the second sealing ring through the cleaning water pump, the first cleaning pipe and the second cleaning pipe. The clean water in the second sealing ring is supplied to the annular cavity through the hose and finally sprayed out through the nozzle to circulate and backwash the filter membrane, thereby effectively preventing excessive impurities from being attached to the filter membrane and affecting its filtration effect, and at the same time effectively preventing the filter membrane from being locally over-pressurized, causing impurities to enter the gap of the filter membrane and affecting its later cleaning.

[0018] 2. The ultrafiltration membrane guided filtration equipment for urban sewage treatment cleans the filter membrane in each filter tank one by one after being used for a period of time. The solenoid valve in the first water supply pipe and the solenoid valve in the first drainage pipe on the filter tank that currently needs to be cleaned are controlled by the controller, and the solenoid valve in the first sewage extraction pipe is controlled to open by the controller. The sewage in the first cavity in the filter tank enters the first sealing ring through the connecting port. The sewage is pumped away at a set rate by arranging a pump at the port of the second sewage extraction pipe section, thereby effectively discharging the sewage with a high impurity content in the filter tank. At the same time, the filter membrane is rinsed again with clean water sprayed from the nozzle, and the impurities on the filter membrane enter the sewage in the first cavity, so that the filter membrane can be cleaned without disassembly, which effectively improves the cleaning efficiency of the filter membrane.

[0019] 3. The ultrafiltration membrane guided filtration equipment for urban sewage treatment drives the bottom plate to rotate in the filter tank through the second motor. At this time, multiple fixed barrels rotate in the filter tank, causing turbulence in the water in the first cavity, thereby effectively preventing impurities from excessively adhering to the filter membrane. At the same time, when the top plate rotates, the fixed barrel drives the filter membrane to rotate under the action of the internal gear and the external gear, so that the filter membrane is evenly in contact with the water discharged from the water permeable port, thereby effectively preventing local blockage of the filter membrane.

[0020] 4. The parts not involved in the device are the same as the existing technology or can be implemented by the existing technology. The present invention effectively prevents excessive impurities from adhering to the filter membrane, affecting its filtering effect and subsequent cleaning. At the same time, the filter membrane can be cleaned without disassembly, which effectively improves the cleaning efficiency of the filter membrane. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 This is a structural schematic diagram of an ultrafiltration membrane guided filtration device for urban sewage treatment proposed by the present invention;

[0022] Figure 2 A schematic cross-sectional view of a filter tank in an ultrafiltration membrane guided filtration device for urban sewage treatment proposed by the present invention;

[0023] Figure 3 The invention provides an ultrafiltration membrane guided filtration device for urban sewage treatment Figure 2 The enlarged schematic diagram of point A in the middle;

[0024] Figure 4 This is a partial structural schematic diagram of an ultrafiltration membrane guided filtration device for urban sewage treatment proposed by the present invention;

[0025] Figure 5 The invention provides an ultrafiltration membrane guided filtration device for urban sewage treatment Figure 4 The enlarged schematic diagram of point B in the middle;

[0026] Figure 6 A partial cross-sectional schematic diagram of an ultrafiltration membrane guided filtration device for urban sewage treatment proposed by the present invention;

[0027] Figure 7 The invention provides an ultrafiltration membrane guided filtration device for urban sewage treatment Figure 6 Enlarged schematic diagram of point C in the middle.

[0028] In the figure: 1. Filter tank; 101. Sealing cover; 102. First water supply pipe; 103. Second water supply pipe; 104. Water supply pump; 105. First drainage pipe; 106. Second drainage pipe; 107. Connecting port; 108. First sealing ring; 109. First sewage extraction pipe; 110. Second sewage extraction pipe; 111. Sewage extraction pump; 112. Second sealing ring; 113. First cleaning pipe; 114. Second cleaning pipe; 115. Cleaning pump; 2. Bottom plate; 201. Top plate; 202, fixed barrel; 203, filter membrane; 204, fixed tube; 205, water permeable port; 206, internal gear; 207, external gear; 208, second motor; 3, screw rod; 301, first motor; 302, limit rod; 303, connecting plate; 304, threaded sleeve; 305, annular cavity; 306, nozzle; 307, hose; 4, first cavity; 401, second cavity; 402, water level sensor; 403, pressure gauge; 404, controller. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely 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.

[0030] Embodiment 1:

[0031] Reference Figure 1-Figure 7, an ultrafiltration membrane guided filtration device for urban sewage treatment, comprising: a plurality of filter tanks 1, and also comprising: a sealing cover 101, which is threadedly connected to the upper end of the filter tank 1; a bottom plate 2 and a top plate 201 are arranged in the filter tank 1, and a plurality of fixed barrels 202 are fixedly connected between the bottom plate 2 and the top plate 201; a filter membrane 203 is arranged on the outside of the fixed barrel 202; a first cavity 4 is arranged between the filter tank 1 and the filter membrane 203, and a second cavity 401 is arranged between the sealing cover 101 and the top plate 201; a first water supply pipe 102 connected to the first cavity 4; a first water supply pipe 102 connected to the second cavity 401 The first drain pipe 105 is arranged on the sealing cover 101; the sewage discharge assembly is arranged at the lower end of the filter tank 1; the threaded sleeve 304 is arranged in the fixed barrel 202; the annular cavity 305 is arranged in the threaded sleeve 304; a driving assembly for driving the threaded sleeve 304 to reciprocate in the fixed barrel 202; a plurality of nozzles 306 are opened on the threaded sleeve 304; a hose 307 is fixedly arranged on the threaded sleeve 304, and the hose 307 is connected to the annular cavity 305; a water supply assembly for supplying water to the hose 307; and a controller 404 is fixedly arranged on the filter tank 1.

[0032] It also includes a water supply pump 104 , multiple first water supply pipes 102 are connected through a second water supply pipe 103 , the water supply end of the water supply pump 104 is connected to one end of the second water supply pipe 103 , and multiple first drainage pipes 105 are connected through a second drainage pipe 106 .

[0033] The sewage discharge assembly includes a first sealing ring 108 fixedly arranged at the lower end of the filter tank 1, and a plurality of connecting ports 107 are arranged between the first sealing ring 108 and the first cavity 4. A first sewage suction pipe 109 is fixedly connected to the first sealing ring 108. The plurality of first sewage suction pipes 109 are connected through a second sewage suction pipe 110, and a sewage pump 111 is fixedly connected to one end of the second sewage suction pipe 110.

[0034] The driving assembly includes a screw rod 3 that is sealed and rotated in the base plate 2. The screw rod 3 is rotatably set in the fixed barrel 202. A first motor 301 matching the screw rod 3 is fixedly connected to the base plate 2. Limit rods 302 are symmetrically arranged in the fixed barrel 202, and a threaded sleeve 304 is sealed and slides on the limit rod 302. The threaded sleeve 304 is threadedly connected to the screw rod 3, and a connecting plate 303 is fixedly connected between the two limit rods 302.

[0035] The water supply assembly includes a second sealing ring 112 that is sealed and rotated in the filter tank 1. A first cleaning pipe 113 that is connected to the second sealing ring 112 is fixedly connected to one side of the filter tank 1. A plurality of first cleaning pipes 113 are connected through a second cleaning pipe 114. A cleaning water pump 115 is provided at one end of the second cleaning pipe 114. One end of the hose 307 is connected to the second sealing ring 112.

[0036] In the process of sewage treatment, the sewage is subjected to preliminary filtration, biological treatment and other preliminary treatments through a large particle filtration mechanism, and then the pre-treated sewage is supplied to the first cavity 4 through the water supply pump 104, the second water supply pipe 103 and the first water supply pipe 102, and the sewage is filtered again through the filter membrane 203 under the action of water pressure.

[0037] During the filtering process, the first motor 301 is started by the controller 404, and the first motor 301 drives the threaded sleeve 304 to reciprocate in the fixed barrel 202 through the screw rod 3, and water is supplied to the second sealing ring 112 through the cleaning water pump 115, the first cleaning pipe 113 and the second cleaning pipe 114. The clean water in the second sealing ring 112 is supplied to the annular cavity 305 through the hose 307, and finally sprayed out through the nozzle 306 to circulate and backwash the filter membrane 203, thereby effectively preventing excessive impurities from adhering to the filter membrane 203 and affecting its filtering effect, and at the same time effectively preventing the filter membrane 203 from being locally pressurized too much, causing impurities to enter the gaps in the filter membrane 203 and affecting its later cleaning.

[0038] After a period of use, the filter membrane 203 in each filter tank 1 is cleaned one by one, and the solenoid valve in the first water supply pipe 102 and the solenoid valve in the first drainage pipe 105 on the filter tank 1 that currently needs to be cleaned are controlled by the controller 404, and the solenoid valve in the first sewage extraction pipe 109 is controlled to be opened by the controller 404, and the sewage in the first cavity 4 in the filter tank 1 enters the first sealing ring 108 through the connecting port 107, and the sewage is pumped away at a set rate by arranging a pump at the port of the second sewage extraction pipe 110, so that the sewage with a high impurity content in the filter tank 1 is effectively discharged, and at the same time, the filter membrane 203 is rinsed again with clean water sprayed from the nozzle 306, and the impurities on the filter membrane 203 enter the sewage in the first cavity 4, so that the filter membrane 203 can be cleaned without disassembly, which effectively improves the cleaning efficiency of the filter membrane 203.

[0039] Embodiment 2:

[0040] Reference Figure 1-Figure 7 , an ultrafiltration membrane guided filtration device for urban sewage treatment, which is basically the same as Example 1, further, a fixed pipe 204 is fixedly connected between the bottom plate 2 and the top plate 201, and the fixed pipe 204 is coaxially arranged with the bottom plate 2, and a plurality of water permeable openings 205 are opened on the fixed pipe 204, the water permeable openings 205 are connected to the first cavity 4, and the first water supply pipe 102 is connected to the fixed pipe 204.

[0041] The first water supply pipe 102 is fixedly connected to the sealing cover 101 , and one end of the first water supply pipe 102 is threadedly and sealedly connected to the fixing pipe 204 .

[0042] When the sewage to be filtered is supplied to the filter tank 1, the sewage in the first water supply pipe 102 enters the fixed pipe 204, and then flows evenly through the water permeable port 205 on the fixed pipe 204, thereby effectively preventing the filter membrane 203 from being locally blocked due to being under high pressure for a long time, thereby facilitating the subsequent cleaning of the filter membrane 203.

[0043] Embodiment 3:

[0044] Reference Figure 1-Figure 7 , an ultrafiltration membrane guided filtration device for urban sewage treatment, is basically the same as Example 1, and further, a second motor 208 is fixedly connected to the bottom of the filter tank 1, and the output end of the second motor 208 is fixedly connected to the bottom plate 2, and the bottom plate 2 and the top plate 201 are both sealed and rotatably connected to the filter tank 1.

[0045] An internal gear 206 is fixedly connected inside the filter tank 1 , and a plurality of external gears 207 are rotatably provided on the top plate 201 . The internal gear 206 meshes with the external gears 207 , and the external gears 207 are fixedly connected to the fixed barrel 202 .

[0046] The bottom plate 2 is driven to rotate in the filter tank 1 by the second motor 208. At this time, multiple fixed barrels 202 rotate in the filter tank 1, causing turbulence in the water in the first cavity 4, thereby effectively preventing impurities from excessively adhering to the filter membrane 203. At the same time, when the top plate 201 rotates, the fixed barrels 202 drive the filter membrane 203 to rotate under the action of the internal gear 206 and the external gear 207, so that the filter membrane 203 is evenly in contact with the water discharged from the water permeable port 205, thereby effectively preventing local blockage of the filter membrane 203.

[0047] Embodiment 4:

[0048] Reference Figure 1-Figure 7 , an ultrafiltration membrane guided filtration device for urban sewage treatment, which is basically the same as Example 1, and further, a water level sensor 402 and a pressure gauge 403 are fixedly connected to the lower side of the top plate 201.

[0049] The water level in the first cavity 4 is determined in real time by the water level sensor 402. When the sewage inside is completely discharged, the controller 404 controls the opening and closing of the relevant electromagnetic valves so that the cleaned filter tank 1 can continue to be put into use.

[0050] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An ultrafiltration membrane guided filtration device for urban sewage treatment, comprising a plurality of filter tanks (1), characterized in that: Also includes: A sealing cover (101) threadedly connected to the upper end of the filter tank (1); The filter tank (1) is provided with a bottom plate (2) and a top plate (201), and a plurality of fixed barrels (202) are fixedly connected between the bottom plate (2) and the top plate (201); A filter membrane (203) is arranged outside the fixed barrel (202); A first cavity (4) is provided between the filter tank (1) and the filter membrane (203), and a second cavity (401) is provided between the sealing cover (101) and the top plate (201); a first water supply pipe (102) in communication with the first cavity (4); a first drain pipe (105) communicating with the second cavity (401) and arranged on the sealing cover (101); A sewage discharge assembly, arranged at the lower end of the filter tank (1); A threaded sleeve (304) is disposed in the fixed barrel (202); An annular cavity (305) is arranged in the threaded sleeve (304); A driving assembly for driving the threaded sleeve (304) to reciprocate in the fixed barrel (202); A plurality of nozzles (306) are provided on the threaded sleeve (304); A hose (307) is fixedly arranged on the threaded sleeve (304), and the hose (307) is connected to the annular cavity (305); A water supply assembly for supplying water into the hose (307); A controller (404) is fixedly arranged on the filter tank (1).

2. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 1, characterized in that: It also includes a water supply pump (104), a plurality of the first water supply pipes (102) are connected via a second water supply pipe (103), a water supply end of the water supply pump (104) is connected to one end of the second water supply pipe (103), and a plurality of the first drainage pipes (105) are connected via a second drainage pipe (106).

3. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 1, characterized in that: The sewage discharge assembly comprises a first sealing ring (108) fixedly arranged at the lower end of the filter tank (1); a plurality of communication ports (107) are arranged between the first sealing ring (108) and the first cavity (4); a first sewage suction pipe (109) is fixedly connected to the first sealing ring (108); the plurality of first sewage suction pipes (109) are connected via a second sewage suction pipe (110); one end of the second sewage suction pipe (110) is fixedly connected to a sewage pump (111).

4. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 1, characterized in that: The driving assembly comprises a screw (3) which is sealed and rotated in a base plate (2); the screw (3) is rotatably arranged in a fixed barrel (202); a first motor (301) which matches the screw (3) is fixedly connected to the base plate (2); limiting rods (302) are symmetrically arranged in the fixed barrel (202); the threaded sleeve (304) is sealed and slidably mounted on the limiting rods (302); the threaded sleeve (304) is threadedly connected to the screw (3); and a connecting plate (303) is fixedly connected between the two limiting rods (302).

5. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 1, characterized in that: The water supply assembly comprises a second sealing ring (112) which is sealed and rotated in the filter tank (1); a first cleaning pipe (113) which is in communication with the second sealing ring (112) is fixedly connected to one side of the filter tank (1); a plurality of first cleaning pipes (113) are connected via a second cleaning pipe (114); a cleaning water pump (115) is provided at one end of the second cleaning pipe (114); and one end of the hose (307) is in communication with the second sealing ring (112).

6. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 1, characterized in that: A fixed pipe (204) is fixedly connected between the bottom plate (2) and the top plate (201), and the fixed pipe (204) is coaxially arranged with the bottom plate (2). A plurality of water permeable openings (205) are provided on the fixed pipe (204), and the water permeable openings (205) are connected to the first cavity (4). The first water supply pipe (102) is connected to the fixed pipe (204).

7. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 6, characterized in that: The first water supply pipe (102) is fixedly connected to the sealing cover (101), and one end of the first water supply pipe (102) is threadedly sealed to the fixing pipe (204).

8. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 6, characterized in that: A second motor (208) is fixedly connected to the bottom of the filter tank (1), and an output end of the second motor (208) is fixedly connected to the bottom plate (2), and both the bottom plate (2) and the top plate (201) are sealed and rotatably connected to the filter tank (1).

9. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 8, characterized in that: An internal gear (206) is fixedly connected inside the filter tank (1), and a plurality of external gears (207) are rotatably arranged on the top plate (201); the internal gear (206) meshes with the external gears (207), and the external gears (207) are fixedly connected to the fixed barrel (202).

10. The ultrafiltration membrane guided filtration equipment for urban sewage treatment according to claim 4, characterized in that: A water level sensor (402) and a pressure gauge (403) are fixedly connected to the lower side of the top plate (201).

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