A sewage treatment device with automatic membrane module backwash control
The automated membrane module backwashing control device solves the problems of high labor intensity and incomplete cleaning of membrane modules in the existing technology, achieving efficient cleaning and improved treatment efficiency of membrane modules, and avoiding leakage and jamming problems of traditional devices.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ANHUI GREEN TITAN ENVIRONMENTAL TECH
- Filing Date
- 2026-04-27
- Publication Date
- 2026-05-29
AI Technical Summary
Existing membrane module cleaning methods are labor-intensive, and it is difficult to clean and rinse multiple membrane modules simultaneously and thoroughly. Traditional online backwashing devices are prone to leakage and jamming, and lack targeted mechanical scraping structures, making it impossible to effectively remove stubborn adhering impurities.
An automated membrane module backwashing control device was designed. By setting up docking and receiving mechanisms, the device enables automated switching between the filtration channel and the backwashing channel. It combines the dual cleaning functions of mechanical scraping and backwashing, and utilizes the pressurized delivery of cleaning fluid and backwashing pump to achieve efficient cleaning of the membrane module.
It enables online backwashing without manual disassembly of membrane modules, reducing labor intensity, improving cleaning effect, enhancing the cleanliness and processing efficiency of membrane modules, and avoiding leakage and jamming problems of traditional devices.
Smart Images
Figure CN122102302A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of wastewater treatment equipment technology, and in particular to a wastewater treatment device with automated membrane module backwashing control. Background Technology
[0002] In wastewater treatment, membrane filtration technology is widely used due to its high interception accuracy and good purification effect. However, during long-term filtration, the surface of the membrane module is prone to adsorbing impurities such as suspended particulate matter, colloids, and organic matter, forming a fouling layer. This leads to a decrease in filtration flux and an increase in operating pressure, which seriously affects the treatment efficiency and the service life of the membrane module. Therefore, after long-term use, the membrane module needs to be backwashed.
[0003] Existing membrane module cleaning methods are mainly divided into two categories: manual disassembly and cleaning and online backwashing. Manual disassembly and cleaning requires shutdown, which is not only labor-intensive and costly, but also interrupts the wastewater treatment process and reduces the overall treatment efficiency. Traditional online backwashing devices require additional complex valve switching mechanisms, which are prone to leaks, jamming, and other malfunctions. Furthermore, when multiple membrane modules are working in parallel, the water pressure of a single backwashing pump is insufficient, resulting in uneven rinsing and incomplete removal of impurities. In addition, the lack of a targeted mechanical scraping structure makes it difficult to effectively remove stubborn adhering impurities and cannot process a large number of membrane modules at the same time. When multiple backwashing pumps are used simultaneously, even more valve switching mechanisms are required, which further increases the chances of leaks and jamming. Summary of the Invention
[0004] This addresses the technical problems of high labor intensity in cleaning, difficulty in simultaneously cleaning multiple membrane modules, and incomplete rinsing in related technologies.
[0005] The present invention provides a wastewater treatment device with automated membrane module backwashing control, including a wastewater treatment tank body and a top cover. The top cover is fixedly installed on the top of the wastewater treatment tank body, and a filter membrane module and a receiving mechanism are installed inside the top cover. The filter membrane assembly includes a filter mechanism and a conveying pipe. The diameter of the filter mechanism is the same as that of the conveying pipe. The conveying pipe is connected to the sewage conveying equipment. A docking mechanism is provided at the connection between the filter mechanism and the conveying pipe. The docking mechanism includes two symmetrically arranged docking components, which are respectively located inside the filter mechanism and inside the conveying pipe. The docking components include connecting pipes, which are arranged along the axial direction of the filter membrane assembly. The two connecting pipes are symmetrically arranged and their ends abut against each other. A first inclined portion is provided on the outer edge of the end of the connecting pipe. The receiving mechanism includes multiple sets of docking ends arranged radially along the main body of the sewage treatment tank. The docking ends have vertically upward water inlets inside. The docking ends are located between two connecting pipes, and the outer edges of both ends of the docking ends are provided with third inclined portions. The third inclined portions are adapted to the first inclined portions. During backwashing, the docking ends move horizontally and insert between the two connecting pipes. The sliding contact between the third inclined portion and the first inclined portion pushes the two connecting pipes apart, so that the docking ends are connected to the connecting pipes in the filtration mechanism.
[0006] In a preferred embodiment, a backwash pump is fixedly installed on the top of the cover. The backwash pump is connected to the cleaning liquid storage device for reverse conveying of the cleaning liquid. A drain pipe is connected to the tank body of the sewage treatment tank for discharging the purified sewage. A base is connected to the bottom of the sewage treatment tank body for supporting the sewage treatment tank body.
[0007] In a preferred embodiment, an extension pipe is connected between two mating ends in the same radial direction, a hollow block is connected between the ends of a plurality of extension pipes, and a one-way valve with an opening facing the hollow block is provided inside the extension pipe.
[0008] In a preferred embodiment, a positioning tube is rotatably connected to the bottom of the hollow block. The positioning tube is fixedly installed at the center of the bottom of the sewage treatment tank body and is connected to an external collection device. A transmission rod is fixedly connected to the top of the hollow block, and a geared motor is fixedly installed on the top of the top cover. The output shaft of the geared motor is connected to the transmission rod through a coupling.
[0009] In a preferred embodiment, a partition plate is provided at the end of the connecting pipe. The shape of the partition plate is adapted to the conveying pipe. A spring is fixedly connected between the partition plate and the conveying pipe, and the spring is sleeved on the outside of the connecting pipe.
[0010] In a preferred embodiment, the filter assembly includes a fixing frame, a filter membrane body, a connecting end, and a positioning end. The connecting end is threadedly installed at the bottom end of the filter membrane body, and the positioning end is threadedly installed at the top end of the filter membrane body. The filter membrane body is vertically connected to the fixing frame through the connecting end and the positioning end. A positioning part is provided on the inner wall of the sewage treatment tank body, and the bottom of the fixing frame is fixedly connected to the positioning part.
[0011] In a preferred embodiment, a fixing component is inserted into the interior of the positioning end, the pipe of the fixing component passes through the positioning end and the fixing frame, and a bolt is threaded on the outer wall of the portion of the pipe passing through the fixing frame, and the bolt is fitted with the top of the fixing frame.
[0012] In a preferred embodiment, a cleaning mechanism is provided inside the filter membrane body. During normal wastewater filtration, wastewater is discharged upward into the filter membrane body from the conveying pipe, and the cleaning mechanism is pushed to the inside of the positioning end. During backwashing, the wastewater is stopped from being conveyed, and cleaning liquid is conveyed in reverse by the backwashing pump. The cleaning mechanism is impacted by the cleaning liquid and moves downward along the filter membrane body.
[0013] In a preferred embodiment, the cleaning mechanism includes two symmetrically arranged semicircular scraper rings. The inner sidewall of the end of each semicircular scraper ring is provided with a second inclined portion. A connecting rod is radially arranged on the inner wall of the semicircular scraper ring, wherein the diameter of one connecting rod is larger than that of the other connecting rod, and the two connecting rods are threaded together.
[0014] In a preferred embodiment, a limiting ring is provided on the outer wall of the connecting rod, and a movable piece is sleeved on the outer wall of the connecting rod, with the end of the movable piece contacting the limiting ring.
[0015] The beneficial effects of this invention are as follows: This invention, by setting up a docking mechanism and a receiving mechanism, connects the docking end to a docking component in the docking mechanism during backwashing, realizing the automatic switching between the filtration channel and the backwashing channel. Online backwashing can be completed without manual disassembly of the membrane module, greatly reducing labor intensity and avoiding the decrease in processing efficiency caused by downtime maintenance. Furthermore, during rinsing, the cleaning liquid is concentrated in several groups of filtration mechanisms, which increases the water flow impact speed and improves the backwashing effect.
[0016] This invention incorporates a cleaning mechanism inside the filter membrane body, integrating mechanical scraping and backwashing for dual cleaning functions. The semi-circular scraper ring of the cleaning mechanism can slide close to the inner wall of the membrane, efficiently removing stubborn impurities. Combined with the pressurized cleaning fluid delivered by the backwashing pump, a composite cleaning effect of scraping and rinsing is achieved, significantly improving the cleanliness of the membrane module. Attached Figure Description
[0017] The accompanying drawings are provided to further illustrate the invention and form part of the specification. They are used in conjunction with embodiments of the invention to explain the invention and do not constitute a limitation thereof. In the drawings: Figure 1 This is a schematic diagram of the overall structure of the present invention.
[0018] Figure 2 This is a structurally disassembled schematic diagram of the wastewater treatment tank body, filter membrane assembly, and receiving mechanism of the present invention.
[0019] Figure 3 This is a schematic diagram of the internal planar structure of the wastewater treatment tank body of the present invention.
[0020] Figure 4 This is a structurally disassembled schematic diagram of the filter membrane assembly and receiving mechanism of the present invention.
[0021] Figure 5 This is a schematic diagram of the planar structure of the filter membrane assembly and receiving mechanism of the present invention.
[0022] Figure 6 This is a schematic diagram of the internal planar structure of the filter membrane body of the present invention.
[0023] Figure 7 This is a structurally disassembled schematic diagram of the internal cleaning mechanism of the filter membrane body of the present invention.
[0024] Figure 8 This is a schematic diagram of the planar structure of the receiving mechanism of the present invention.
[0025] In the diagram: 1. Wastewater treatment tank body; 2. Top cover; 3. Gear motor; 4. Backwash pump; 5. Base; 6. Drain pipe; 7. Filter membrane assembly; 71. Fixing frame; 72. Filter membrane body; 73. Connecting end; 74. Positioning end; 75. Conveying pipe; 76. Docking mechanism; 761. Connecting pipe; 762. Partition plate; 763. First inclined part; 764. Spring; 77. Fixing component; 78. Cleaning mechanism; 781. Semi-circular scraper ring; 782. Second inclined part; 783. Connecting rod; 784. Movable plate; 785. Limiting ring; 8. Receiving mechanism; 81. Transmission rod; 82. Hollow block; 83. Extension pipe; 84. Docking end; 85. Third inclined part; 86. Inlet; 87. Positioning pipe; 9. Positioning part. Detailed Implementation
[0026] The present invention will now be described in further detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the invention, and therefore only show the components relevant to the invention.
[0027] Example 1 refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 8 As shown, a wastewater treatment device with automated membrane module backwashing control includes a wastewater treatment tank body 1 and a top cover 2. The top cover 2 is fixedly installed on the top of the wastewater treatment tank body 1, and a filter membrane module 7 and a receiving mechanism 8 are installed inside the top cover 2. The filter membrane assembly 7 includes a filter mechanism and a conveying pipe 75. The diameter of the filter mechanism is the same as that of the conveying pipe 75. The conveying pipe 75 is connected to the sewage conveying equipment. A docking mechanism 76 is provided at the connection between the filter mechanism and the conveying pipe 75. The docking mechanism 76 includes two symmetrically arranged docking components. The docking components are respectively located inside the filter mechanism and inside the conveying pipe 75. The docking components include a connecting pipe 761. The connecting pipe 761 is arranged along the axial direction of the filter membrane assembly 7. The two connecting pipes 761 are symmetrically arranged and their ends abut against each other. A first inclined portion 763 is provided on the outer edge of the end of the connecting pipe 761. The receiving mechanism 8 includes a docking end 84, which is arranged radially along the main body 1 of the sewage treatment tank. The docking end 84 has a vertically upward water inlet 86 inside. The docking end 84 is located between two connecting pipes 761, and the outer edges of both ends of the docking end 84 are provided with a third inclined part 85. The third inclined part 85 is adapted to the first inclined part 763. During backwashing, the docking end 84 moves horizontally and inserts between the two connecting pipes 761. The sliding contact between the third inclined part 85 and the first inclined part 763 pushes the two connecting pipes 761 apart, so that the docking end 84 is connected to the connecting pipe 761 in the filter mechanism.
[0028] In this embodiment, the specific implementation scenario is as follows: the device can be used as a standalone deep wastewater treatment unit or integrated into an existing wastewater treatment production line to achieve automated continuous operation of wastewater filtration and membrane module self-cleaning. Backwashing and impurity removal can be completed without manual disassembly of the membrane module, thereby improving treatment efficiency.
[0029] It should be noted that the sewage enters the filtration mechanism through the conveying pipe 75. The filtration mechanism traps impurities in the sewage. The docking mechanism 76 consists of two symmetrical connecting pipes 761, which are fixed inside the filtration mechanism and the conveying pipe 75, respectively. Under normal conditions, the channels are closed and connected by the end fitting together. During backwashing, the channels are switched by external force separation. During backwashing, the docking end 84 opens the two contacting connecting pipes 761 through the third inclined part 85 and connects the inlet 86 with the filtration mechanism. The cleaning liquid passes through the filtration mechanism and enters the docking end 84 from the inlet 86 to complete the backwashing.
[0030] During the normal filtration stage, wastewater flows along the conveying pipe 75 to the filtration mechanism. At this time, the ends of the two connecting pipes 761 of the docking mechanism 76 are attached and in a closed and connected state, forming a complete wastewater flow channel. The wastewater enters the interior of the filter membrane module 7 through the docking mechanism 76. The membrane structure of the filtration mechanism traps impurities in the wastewater, and the purified wastewater flows out from the filtration mechanism, completing the filtration process. During this stage, the docking end 84 of the receiving mechanism 8 is in a standby position, located on the side of the two connecting pipes 761, and does not contact the connecting pipes 761.
[0031] When backwashing is required, the wastewater conveying equipment stops supplying liquid and discharges the residual wastewater in the main body 1 of the wastewater treatment tank. Then, cleaning fluid is injected into the main body 1 of the wastewater treatment tank, and the docking end 84 is controlled to move horizontally towards the contact point of the two connecting pipes 761. The third inclined portion 85 at both ends of the docking end 84 contacts the first inclined portion 763 at the ends of the two connecting pipes 761. Because the inclination angles of the two inclined portions are matched, the thrust of the horizontal movement is converted into a lateral force separating to both sides through the inclined surface. The lateral force pushes the two connecting pipes 761 to move in their respective installation directions, breaking the originally closed filter channel. The docking end 84 continues to move horizontally until... The filter is fully inserted between the two connecting pipes 761. At this time, the inlet 86 of the docking end 84 is completely aligned with and sealed to the connecting pipe 761 inside the filter mechanism. The cleaning liquid flows back into the filter mechanism along the connecting pipe 761 on the side of the filter mechanism to rinse the impurities trapped on the membrane surface. Then it enters the inlet 86 inside the docking end 84. The waste liquid containing impurities after rinsing is discharged through the preset channel, completing the backwash cleaning. Then the docking end 84 continues to move and docks with the next set of filter mechanisms. After the backwash is completed, the docking end 84 moves horizontally in the opposite direction to reset, the two connecting pipes 761 re-fit and close, the filter channel is restored to unobstructed, and the device returns to the normal filtration stage.
[0032] It should also be noted that a backwash pump 4 is fixedly installed on the top of the top cover 2. The backwash pump 4 is connected to the cleaning liquid storage equipment for reverse conveying of the cleaning liquid. A drain pipe 6 is connected to the tank body of the sewage treatment tank 1. The drain pipe 6 is used to discharge the purified sewage. A base 5 is connected to the bottom of the sewage treatment tank body 1. The base 5 is used to support the sewage treatment tank body 1.
[0033] In this embodiment, the sewage conveying equipment is an external sewage pump. Its output pressure needs to meet the requirement of pushing sewage through the conveying pipe 75 and docking mechanism 76 into the filter membrane module 7. The cleaning liquid in the cleaning liquid storage device is a neutral cleaning medium such as clean water or a mixture with a small amount of environmentally friendly membrane cleaning agent added. The external collection device is used to temporarily store the waste liquid containing impurities after backwashing. It is then further treated by sedimentation, pressure filtration and other methods to separate impurities from waste liquid. The backwash pump 4 provides the power for the flow of cleaning liquid. By pressurizing, the cleaning liquid is transported back to the inside of the filter membrane module 7 to ensure that the cleaning liquid can impact the impurities on the inner wall of the filter membrane. The purified clean water is collected in the outer area of the filter membrane inside the tank body and then discharged through the drain pipe 6 to the subsequent treatment unit or directly discharged in compliance with standards. The base 5 isolates the bottom of the sewage treatment tank body 1 from the ground and provides installation space for the filter membrane module 7 and the receiving mechanism 8.
[0034] Example 2 refer to Figure 4 , Figure 5 and Figure 8 As shown, an extension pipe 83 connects two radially aligned mating ends 84. A hollow block 82 connects the ends of multiple extension pipes 83. A one-way valve with its opening facing the hollow block 82 is installed inside the extension pipe 83. A positioning pipe 87 is rotatably connected to the bottom of the hollow block 82. The positioning pipe 87 is fixedly installed at the center of the bottom of the sewage treatment tank body 1. The positioning pipe 87 is connected to external collection equipment. A transmission rod 81 is fixedly connected to the top of the hollow block 82. A reduction motor 3 is fixedly installed on the top of the top cover 2. The output shaft of the reduction motor 3 is connected to the transmission rod 81 through a coupling. A partition plate 762 is provided at the end of the connecting pipe 761. The shape of the partition plate 762 is adapted to the conveying pipe 75. A spring 764 is fixedly connected between the partition plate 762 and the conveying pipe 75. The spring 764 is sleeved on the outside of the connecting pipe 761.
[0035] It should be noted that during the normal filtration stage, spring 764 is in its normally contracted state. When backwashing is required, the geared motor 3 drives the transmission rod 81 to rotate via the coupling, causing the docking end 84 to move towards the docking mechanism 76. After the third inclined portion 85 at both ends of the docking end 84 contacts the first inclined portion 763 at the end of the connecting pipe 761, the horizontal thrust is converted into a lateral force through the first inclined portion 763 and the third inclined portion 85, pushing the two connecting pipes 761 apart and stretching spring 764. The sewage channel is then disconnected. After insertion, the cleaning fluid enters the extension pipe 83 through the inlet 86 of the docking end 84, which pushes the one-way valve to open. The one-way valve is used to prevent the cleaning fluid from flowing back. After rinsing, the impurity-containing waste liquid is collected in the hollow block 82 and discharged to the external collection equipment through the positioning pipe 87. After backwashing is completed, the reduction motor 3 continues to run, driving the docking end 84 to move away from the two connecting pipes 761. The spring 764 releases its elastic potential energy, pushing the partition plate 762 and the connecting pipes 761 to reset and re-fit. The sewage filtration channel is restored, and the device returns to the normal filtration state.
[0036] Example 3 refer to Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6As shown, the filter assembly includes a fixing frame 71, a filter membrane body 72, a connecting end 73, and a positioning end 74. The connecting end 73 is threaded onto the bottom end of the filter membrane body 72, and the positioning end 74 is threaded onto the top end of the filter membrane body 72. The filter membrane body 72 is vertically connected to the fixing frame 71 through the connecting end 73 and the positioning end 74. A positioning part 9 is provided on the inner wall of the sewage treatment tank body 1. The bottom of the fixing frame 71 is fixedly connected to the positioning part 9. A fixing component 77 is inserted into the inside of the positioning end 74. The pipe of the fixing component 77 passes through the positioning end 74 and the fixing frame 71, and a bolt is threaded on the outer wall of the part of the pipe that passes through the fixing frame 71, and the bolt is fitted with the top of the fixing frame 71.
[0037] It should be noted that during assembly, first, the positioning end 74 is threaded onto the top of the filter membrane body 72. Then, the fixing component 77 is inserted into the positioning end 74. Next, the connecting end 73 is threaded onto the bottom of the filter membrane body 72. The assembled filter membrane body 72 is then connected to the fixing frame 71 through the connecting end 73 and the positioning end 74, so that the filter membrane body 72 is in a vertical position. Subsequently, the threaded bolts are installed on the outer wall of the part of the fixing component 77 that passes through the fixing frame 71 to lock it in place, preventing the filter membrane body 72 from shifting or shaking during filtration or backwashing. Finally, the entire filter membrane assembly 7 is installed onto the positioning part 9. During the operation of the device, during normal filtration, the vertically installed filter membrane body 72 provides a stable filtration channel for wastewater. During backwashing, the filter membrane assembly 7 can withstand the force generated by the impact of the cleaning liquid, ensuring that the backwashing process proceeds smoothly.
[0038] Example 4 refer to Figure 6 and Figure 7 As shown, a cleaning mechanism 78 is movably installed inside the filter membrane body 72. During normal wastewater filtration, wastewater is discharged upward into the filter membrane body 72 from the conveying pipe 75, and the cleaning mechanism 78 is pushed to the inside of the positioning end 74. During backwashing, the wastewater is stopped, and the cleaning liquid is conveyed in reverse by the backwashing pump 4. The cleaning mechanism 78 is impacted by the cleaning liquid and moves downward along the filter membrane body 72. A second inclined portion 782 is provided on the edge of the inner sidewall of the end of the cleaning mechanism 78. The cleaning mechanism 78 includes two symmetrically arranged semi-circular scraper rings 781. The second inclined portion 782 is provided on the edge of the inner sidewall of the end of the semi-circular scraper ring 781. A connecting rod 783 is radially arranged on the inner wall of the semi-circular scraper ring 781. The diameter of one connecting rod 783 is larger than that of the other connecting rod 783. The two connecting rods 783 are threaded together.
[0039] It should be noted that during assembly, the cleaning mechanism 78 is simultaneously installed into the filter membrane body 72, and the connecting rods 783 are connected together by threaded rotation, so that the two semi-circular scraper rings 781 are spliced together. Then, it is placed inside the filter membrane body 72, so that the outer wall of the semi-circular scraper rings 781 fits against the inner wall of the filter membrane body 72. Between the connecting rods 783, the movable piece 784 is fitted onto the outer wall of the connecting rods 783, and is limited by the limiting ring 785. During normal wastewater filtration, wastewater flows upward from the conveying pipe 75 into the filter membrane body 72. The upward thrust generated by the water flow acts on the cleaning mechanism 78, pushing it to the inside of the positioning end 74. At this time, the cleaning mechanism 78 does not affect... To ensure the normal filtration and flow of wastewater, the filter membrane body 72 focuses on trapping impurities in the wastewater. When impurities accumulate on the inner wall of the filter membrane body 72 and affect the filtration efficiency, the backwashing procedure is initiated. First, the wastewater is stopped, and then the cleaning liquid is reversed by the backwashing pump 4. The cleaning liquid impacts the cleaning mechanism 78 from top to bottom, pushing the cleaning mechanism 78 to move downward along the filter membrane body 72. During the process, two semi-circular scraper rings 781 slide close to the inner wall of the membrane to scrape off the attached impurities. The second inclined part 782 on the inner side wall of the end of the semi-circular scraper ring 781 can guide the cleaning liquid and impurities to flow smoothly and reduce water flow resistance. At the same time, the movable plate 784 rotates rapidly under the action of water flow to prevent impurities from clogging inside the filter membrane body 72.
[0040] Working principle: During normal filtration, the geared motor 3 remains off, and the docking end 84 is located on the side of the two connecting pipes 761. At this time, the spring 764 is in a normal contracted state, and the ends of the two connecting pipes 761 are tightly fitted to form a sealed sewage flow channel. The external sewage conveying equipment transports sewage, and the sewage enters the filter membrane body 72 through the conveying pipe 75. The upward thrust generated by the water flow pushes the cleaning mechanism 78 to the inside of the positioning end 74. The membrane structure of the filter membrane body 72 intercepts suspended particles, colloids and other impurities in the sewage. The purified water collects in the outer area of the filter membrane inside the sewage treatment tank body 1, and is finally discharged to the subsequent treatment unit or directly discharged after meeting the standards through the drain pipe 6 on the tank. When impurities accumulate on the inner wall of the filter membrane body 72, causing a decrease in filtration efficiency, the backwashing procedure is initiated. First, the sewage conveying equipment is stopped, and residual sewage in the tank is discharged. The backwashing pump 4 is started, drawing neutral cleaning medium from the cleaning liquid storage equipment, pressurizing it, and then conveying it in reverse to the sewage treatment tank body 1. Subsequently, the reduction motor 3 is started, and its output shaft drives the transmission rod 81 to rotate through the coupling, driving the hollow block 82 to rotate the extension pipe 83 and all the docking ends 84. The third inclined portion 85 at both ends of the docking end 84 connects with the first inclined portion at the end of the connecting pipe 761. When the inclined part 763 contacts, the horizontal thrust is converted into a lateral force through the inclined surface, which pushes the two connecting pipes 761 to separate in their respective installation directions and stretches the spring 764, disconnecting the sewage channel. After the docking end 84 is inserted into place, the cleaning liquid flows into the interior of the filter membrane body 72 and impacts the cleaning mechanism 78 from top to bottom. The cleaning mechanism 78 is pushed by the cleaning liquid to move downward along the filter membrane body 72. The two semi-circular scraper rings 781 slide and scrape off the attached impurities close to the inner wall of the membrane. The movable plate 784 rotates rapidly under the action of water flow to prevent impurities from clogging the filter membrane body 72. After rinsing, the impurity-containing waste liquid flows out from the filter membrane body 72 and enters the extension pipe 83 through the inlet 86 of the docking end 84, which pushes the one-way valve to open. After the waste liquid is collected in the hollow block 82, it is discharged to the external collection equipment through the positioning pipe 87. After the backwashing of the filter membrane body 72 is completed, the reduction motor 3 continues to drive the docking end 84 to move and dock with the next set of filter mechanisms to realize the continuous backwashing of multiple sets of membrane modules. After backwashing is completed, the geared motor 3 continues to drive the transmission rod 81, causing the docking end 84 to disengage from the connecting pipe 761. The spring 764 releases its elastic potential energy, pushing the partition plate 762 to reset the connecting pipe 761, and the ends re-fit tightly, restoring the sealed sewage flow channel.
[0041] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.
Claims
1. A wastewater treatment device with automated membrane module backwashing control, comprising a wastewater treatment tank body (1) and a top cover (2), wherein the top cover (2) is fixedly installed on the top of the wastewater treatment tank body (1), characterized in that, The top cover (2) is equipped with a filter membrane assembly (7) and a receiving mechanism (8). The filter membrane assembly (7) includes a filter mechanism and a conveying pipe (75), and the diameter of the filter mechanism is the same as that of the conveying pipe (75). The conveying pipe (75) is connected to the sewage conveying equipment. A docking mechanism (76) is provided at the connection between the filter mechanism and the conveying pipe (75). The docking mechanism (76) includes two symmetrically arranged docking components, and the docking components are respectively arranged inside the filter mechanism and inside the conveying pipe (75). The docking components include a connecting pipe (761). The connecting pipe (761) is arranged along the axial direction of the filter membrane assembly (7). The two connecting pipes (761) are symmetrically arranged and their ends abut against each other. A first inclined part (763) is provided on the outer edge of the end of the connecting pipe (761). The receiving mechanism (8) includes multiple sets of docking ends (84) arranged radially along the main body (1) of the sewage treatment tank. The docking ends (84) are provided with inlets (86) inside. The docking ends (84) are located between two connecting pipes (761). The outer edges of both ends of the docking ends (84) are provided with third inclined portions (85). The third inclined portions (85) are adapted to the first inclined portions (763). During backwashing, the docking ends (84) move horizontally. The sliding contact between the third inclined portions (85) and the first inclined portions (763) pushes the two connecting pipes (761) to separate, so that the docking ends (84) are connected to the connecting pipes (761) in the filter mechanism.
2. The wastewater treatment device with automated membrane module backwashing control according to claim 1, characterized in that, A backwash pump (4) is fixedly installed on the top of the top cover (2). The backwash pump (4) is connected to the cleaning liquid storage device for reverse conveying of cleaning liquid. A drain pipe (6) is connected to the tank body of the sewage treatment tank (1). The drain pipe (6) is used to discharge the purified sewage. A base (5) is connected to the bottom of the sewage treatment tank body (1). The base (5) is used to support the sewage treatment tank body (1).
3. The wastewater treatment device with automated membrane module backwashing control according to claim 1, characterized in that, An extension pipe (83) is connected between two mating ends (84) on the same radial direction, and a hollow block (82) is connected between the ends of the multiple extension pipes (83), and a one-way valve with an opening facing the hollow block (82) is provided inside the extension pipe (83).
4. The wastewater treatment device with automated membrane module backwashing control according to claim 3, characterized in that, The bottom of the hollow block (82) is rotatably connected to a positioning tube (87), which is fixedly installed at the center of the bottom of the sewage treatment tank body (1). The positioning tube (87) is connected to the external collection equipment. The top of the hollow block (82) is fixedly connected to a transmission rod (81), and the top of the top cover (2) is fixedly installed with a reduction motor (3). The output shaft of the reduction motor (3) is connected to the transmission rod (81) through a coupling.
5. A wastewater treatment device for automated membrane module backwashing control according to claim 1, characterized in that, The end of the connecting pipe (761) is provided with a partition plate (762). The shape of the partition plate (762) is adapted to the conveying pipe (75). A spring (764) is fixedly connected between the partition plate (762) and the conveying pipe (75). The spring (764) is sleeved on the outside of the connecting pipe (761).
6. A wastewater treatment device with automated membrane module backwashing control according to claim 1, characterized in that, The filter assembly includes a fixed frame (71), a filter membrane body (72), a connecting end (73), and a positioning end (74). The connecting end (73) is threaded onto the bottom end of the filter membrane body (72), and the positioning end (74) is threaded onto the top end of the filter membrane body (72). The filter membrane body (72) is vertically connected to the fixed frame (71) through the connecting end (73) and the positioning end (74). A positioning part (9) is provided on the inner wall of the sewage treatment tank body (1), and the bottom of the fixed frame (71) is fixedly connected to the positioning part (9).
7. A wastewater treatment device for automated membrane module backwashing control according to claim 6, characterized in that, A fixing component (77) is inserted inside the positioning end (74). The pipe of the fixing component (77) passes through the positioning end (74) and the fixing frame (71). A bolt is threaded on the outer wall of the part of the pipe that passes through the fixing frame (71), and the bolt is in contact with the top of the fixing frame (71).
8. A wastewater treatment device for automated membrane module backwashing control according to claim 6, characterized in that, The filter membrane body (72) is equipped with a cleaning mechanism (78). During normal filtration of sewage, sewage is discharged upward from the conveying pipe (75) into the filter membrane body (72), and the cleaning mechanism (78) is pushed to the inside of the positioning end (74). During backwashing, the sewage is stopped and the cleaning liquid is conveyed in reverse through the backwashing pump (4). The cleaning mechanism (78) is impacted by the cleaning liquid and moves downward along the filter membrane body (72).
9. A wastewater treatment device for automated membrane module backwashing control according to claim 8, characterized in that, The cleaning mechanism (78) includes two symmetrically arranged semicircular scraper rings (781). The edge of the inner sidewall of the end of the semicircular scraper ring (781) is provided with a second inclined part (782). A connecting rod (783) is radially arranged on the inner wall of the semicircular scraper ring (781). The diameter of one connecting rod (783) is larger than that of the other connecting rod (783). The two connecting rods (783) are threaded together.
10. A wastewater treatment device with automated membrane module backwashing control according to claim 9, characterized in that, A limiting ring (785) is provided on the outer wall of the connecting rod (783), and a movable piece (784) is sleeved on the outer wall of the connecting rod (783). The end of the movable piece (784) is in contact with the limiting ring (785).