A sewage multi-stage separation treatment device and method

Abstract

The present invention relates to the technical field of sewage treatment devices, and specifically to a sewage multi-stage separation treatment device and method, including a sedimentation box, the side wall of the sedimentation box is inlaid with a glass observation window for observing the inside of the sedimentation box, the bottom of the sedimentation box is provided with a drain port, the inside of the drain port is provided with a solenoid valve, the top of the sedimentation box is fixedly connected to a filter box, the inside of the filter box is fixedly connected with two filter screens for filtering sewage, a water inlet is fixedly connected to one side of the filter box, one end of the water inlet is inclined toward the filter screen, and a cleaning mechanism for cleaning the filter screen is provided inside the filter box. Compared with the prior art, the present application can continuously clean, scrape and collect the debris filtered on the filter screen during the filtering process, and at the same time, there is no need to disassemble and clean the filter screen. By quantitatively adding flocculants, the rapid precipitation of impurities in the sewage in the sedimentation box can be effectively promoted, thereby improving the sedimentation efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of sewage treatment devices, and in particular to a sewage multi-stage separation treatment device and method. Background Art

[0002] With the acceleration of modernization, the sewage generated by urban production and life is also increasing year by year, especially domestic sewage. Due to the large number of pollution sources and large discharge volume, the urban sewage pipes are heavily loaded and often encounter siltation and blockage problems. In order to prevent the blockage of sewage pipes, the existing technology usually uses a graded separation treatment device before sewage transfer to perform preliminary filtration and slag removal on the sewage to reduce the pressure of subsequent sewage treatment.

[0003] A Chinese patent discloses: a sewage separation and treatment device, patent application number: 201921144542.0, which "includes a collecting barrel and a filtering mechanism arranged in the collecting barrel, wherein a top cover is arranged on the top of the collecting barrel and a liquid separation mechanism is arranged on the bottom; the filtering mechanism comprises a filter basket rotatably arranged in the collecting barrel, and a water inlet and a driving assembly for driving the filter basket to rotate are arranged on the top cover at a position corresponding to the filter basket. The utility model has a simple structure, is easy to use and clean, and is stable and reliable during operation. It can realize effective separation and treatment of sewage. By arranging a filter basket and a multi-layer filter plate, multi-stage filtration treatment of solid debris is realized, which greatly reduces the solid impurity content in the sewage flowing to the bottom of the collecting barrel, and improves the sewage separation effect".

[0004] Although the sewage separation device can achieve effective separation and treatment of sewage, and realizes multi-stage filtration treatment of solid debris by setting up filter baskets and multi-layer filter plates, which greatly reduces the solid impurity content in the sewage flowing to the bottom of the collection bucket, the multi-layer filter plates in the separation device cannot automatically clean the impurities on the filter plates during filtering, which means that during the filtration process, the multi-layer filter plates will gradually become blocked, affecting the filtration effect and the efficiency of sewage treatment. In addition, when the device needs to clean the multi-layer filter plates, it is necessary to manually open the top cover of the device and then disassemble the multi-layer filter plates for cleaning, which is not only time-consuming and labor-intensive, but also increases work intensity and reduces the filtration efficiency. At the same time, the filtered sewage will be at the bottom of the collection bucket and naturally precipitate, and the sedimentation efficiency is slow, which further reduces the efficiency and time of sewage separation, and is inconvenient to use. Summary of the invention

[0005] In view of this, the purpose of the present invention is to propose a multi-stage separation treatment device and method for sewage to solve the problem that impurities on the filter plate cannot be automatically cleaned. When the filter plate needs to be cleaned, the top cover of the device needs to be manually opened and the multi-layer filter plates need to be disassembled for cleaning, which results in low sedimentation efficiency, further increasing the efficiency and time of sewage separation.

[0006] Based on the above purpose, the present invention provides a sewage multi-stage separation treatment device, including a sedimentation box, the side wall of the sedimentation box is inlaid with a glass observation window for observing the interior of the sedimentation box, a drain outlet is provided at the bottom of the sedimentation box, a solenoid valve is arranged inside the drain outlet, a filter box is fixedly connected to the top of the sedimentation box, two filter screens for filtering sewage are fixedly connected inside the filter box, a water inlet is fixedly connected to one side of the filter box, one end of the water inlet is inclined toward the filter screen, a cleaning mechanism for cleaning the filter screen is arranged inside the filter box, and a feeding mechanism for automatically feeding the sewage precipitated in the sedimentation box is arranged inside the sedimentation box.

[0007] Preferably, the cleaning mechanism includes a first rotating rod rotatably connected between the inner walls of the filter box, a rotating impeller is fixedly connected to the side wall of one end of the outer wall of the first rotating rod near the water inlet, a second rotating rod is respectively rotated between the side walls of the inner walls of the filter box near the two filter screens, one end of the second rotating rod is respectively fixedly connected to mutually meshing gears, a belt is provided between one end of the second rotating rod and one end of the first rotating rod through a pulley sleeve, the side walls of the second rotating rod are threadedly connected to an outer scraper through a slider, the interior of the outer scraper is fixedly connected to a telescopic spring, one end of the telescopic spring is fixedly connected to an inner scraper, the inner scraper is slidably connected in the outer scraper, and one end of the bottom of the inner scraper is in close contact with the top of the filter screen.

[0008] Preferably, both side walls of the filter box are fixedly connected to a collecting box, the inner side walls of the collecting box close to the two filters are slidably connected to an extrusion plate, a first reciprocating spring is fixedly connected to the extrusion plate before the inner wall of the collecting box is close to the extrusion plate, and the bottom of the inner wall of the collecting box is slidably connected to a dirt collecting box.

[0009] Preferably, the automatic unloading mechanism includes a storage box fixedly connected to the top of the sedimentation box, a unloading barrel is fixedly connected to the bottom of the storage box, a quantitative tube that is interconnected is fixedly connected between the bottom of the storage box and the outer wall of the unloading barrel, a first extrusion spring is fixedly connected to the top of the inner wall of the unloading barrel, one end of the first extrusion spring is fixedly connected to a blocking push plate, the top of the blocking push plate slides through the inner wall of the unloading barrel and extends into the bottom of the inner wall of the storage box, and a sewage collecting leakage plate is slidably connected to the bottom of the inner wall of the sedimentation box.

[0010] Preferably, the automatic unloading mechanism also includes a slide frame fixedly connected to the top of the sewage collecting leakage plate, the slide frame is slidably connected with a floating block inside, the top of the floating block is fixedly connected with a support column, the top of one end of the support column slides through the top of the slide frame and is fixedly connected with a bulk material tray, the top of the bulk material tray is fixedly connected with a leakage barrel, the bottom of one end of the leakage barrel close to the bulk material tray is respectively provided with leakage ports, and the side wall of the leakage barrel is provided with a connecting hole.

[0011] Preferably, a water baffle for preventing sewage from splashing is fixedly connected to a side wall of one end of the water inlet close to the filter box.

[0012] Preferably, two sides of the inner wall of the collection box are fixedly connected with guide blocks which are separated from each other.

[0013] A sewage multi-stage separation treatment method, using the above-mentioned sewage multi-stage separation treatment device, comprises the following steps:

[0014] S1. Filtration: First, water is transported into the water inlet, and then the sewage will impact the rotating impeller and flow into the filter box. At this time, the sewage will be filtered in turn through two filter nets. After multi-stage filtration of the sewage through the filter net, the debris will remain on the filter net, and the filtered sewage will flow into the sedimentation box.

[0015] S2, cleaning and collection: the rotating impeller will rotate under the impact of sewage, and when the rotating impeller rotates, it will drive the first rotating rod to rotate, and the first rotating rod will drive the second rotating rod to rotate through the belt, and the second rotating rod will drive the gear at one end to rotate, and the gear will drive another gear meshed at the bottom to rotate, and at this time, the other gear will drive another second rotating rod to rotate, and then the second rotating rod will drive the outer scraper at the top of the filter to move back and forth, and the outer scraper will drive the inner scraper to move on the filter, and the bottom of the inner scraper is tightly attached to the top of the filter by arranging a telescopic spring in the outer scraper. When the impurities on the filter are scraped to the side wall of the filter, they will be squeezed to the squeezing plate, and the squeezing plate will be squeezed by the first reciprocating spring to squeeze the filtered impurities. When the outer scraper and the inner scraper are continuously squeezed, the squeezing plate will be squeezed into the collection box, and then the impurities will fall into the dirt collecting box.

[0016] S3. Quick sedimentation: First, put the flocculant particles into the storage box. When the sewage in the sedimentation box continues to rise, the floating block will float on the sewage and slide in the chute frame. Then the floating block will drive the supporting column, the bulk material tray and the leakage barrel to move upward. At this time, the leakage barrel will slide in the lower barrel. When the leakage barrel rises to a certain height, the top of the leakage barrel will squeeze the blocking push plate and the first squeezing spring. Then one side of the blocking push plate will block the end of the quantitative tube close to the storage box, so that the flocculant particles in the storage box cannot fall into the quantitative tube. When the connecting hole rises to the same horizontal plane as one end of the quantitative tube, the flocculant particles inside the quantitative tube will fall into the leakage barrel through the connecting hole and fall to the top of the bulk material tray. The flocculant particles will roll to the top of the bulk material tray through the leakage port, and then the flocculant particles can roll into the sedimentation box through the shape of the bulk material tray and the holes opened.

[0017] Beneficial effects of the present invention:

[0018] 1. This kind of sewage multi-stage separation treatment device and method, through the structural design of the cleaning mechanism, can continuously clean, scrape and collect the debris filtered on the filter net during the filtration process, ensuring the filtering effect and avoiding the clogging of the filter net during filtration, thereby significantly improving the filtration efficiency. At the same time, there is no need to disassemble and clean the filter net, which saves time and effort, reduces the labor intensity of the staff, and is easy to use.

[0019] 2. This kind of sewage multi-stage separation treatment device and method realizes quantitative input through an automatic feeding mechanism. By quantitatively inputting flocculants, it can effectively promote the rapid precipitation of impurities in the sewage in the sedimentation tank. This precise dosage control can ensure the best flocculation effect, thereby improving the sedimentation efficiency, accelerating the rapid precipitation of impurities in the sewage in the sedimentation tank, reducing the sedimentation time, and accelerating the efficiency of sewage treatment. At the same time, it also avoids the waste caused by excessive input, thereby reducing the cost of sewage treatment and facilitating use. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] In order to more clearly illustrate the technical solutions in the present invention or the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only for the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0021] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the present invention;

[0022] Figure 2 It is a schematic diagram of the overall internal three-dimensional structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the internal three-dimensional structure of the filter box of the present invention;

[0024] Figure 4 This is a schematic diagram of the cross-sectional structure of the filter box of the present invention;

[0025] Figure 5 It is a schematic diagram of the cross-sectional structure of the lower barrel of the present invention;

[0026] Figure 6 It is a schematic diagram of the three-dimensional structure of the bulk material tray and the leakage barrel of the present invention;

[0027] Figure 7 It is a schematic diagram of the bottom structure of the sedimentation box of the present invention.

[0028] The markings in the figure are:

[0029] 1. Sedimentation box; 2. Glass observation window; 3. Filter box; 4. Filter screen; 5. Water inlet; 6. First rotating rod; 7. Rotating impeller; 8. Second rotating rod; 9. Gear; 10. Belt; 11. Outer scraper; 12. Telescopic spring; 13. Inner scraper; 14. Collecting box; 15. Extrusion plate; 16. First reciprocating spring; 17. Dirt collecting box; 18. Storage box; 19. Discharge barrel; 20. Dosing tube; 21. First extrusion spring; 22. Blocking push plate; 23. Slide rack; 24. Floating block; 25. Support column; 26. Bulk material tray; 27. Leakage barrel; 28. Connecting hole; 29. ​​Dirt leakage plate; 30. Drain; 31. Solenoid valve; 32. Water retaining plate; 33. Guide block; 34. Leakage port. DETAILED DESCRIPTION

[0030] In order to make the objectives, technical solutions and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with specific embodiments.

[0031] It should be noted that, unless otherwise defined, the technical terms or scientific terms used in the present invention should be understood by people with ordinary skills in the field to which the present invention belongs. The "first", "second" and similar words used in the present invention do not indicate any order, quantity or importance, but are only used to distinguish different components. "Include" or "comprise" and similar words mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects. "Connect" or "connected" and similar words are not limited to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "Up", "down", "left", "right" and the like are only used to indicate relative positional relationships. When the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0032] like Figures 1 to 7As shown, a sewage multi-stage separation treatment device comprises a sedimentation tank 1, the side wall of which is inlaid with a glass observation window 2 for observing the interior of the sedimentation tank 1, a drain port 30 is provided at the bottom of the sedimentation tank 1, a solenoid valve 31 is provided inside the drain port 30, a filter box 3 is fixedly connected to the top of the sedimentation tank 1, two filter screens 4 for filtering sewage are fixedly connected inside the filter box 3, a water inlet 5 is fixedly connected to one side of the filter box 3, one end of the water inlet 5 is inclined toward the filter screen 4, a cleaning mechanism for cleaning the filter screen 4 is provided inside the filter box 3, and a feeding mechanism for automatically feeding the sewage precipitated in the sedimentation tank 1 is provided inside the sedimentation tank 1.

[0033] For further information, see Attachment Figure 3 to Figure 4 As shown, the cleaning mechanism includes a first rotating rod 6 rotatably connected between the inner walls of the filter box 3, and a rotating impeller 7 is fixedly connected to the side wall of the outer wall of the first rotating rod 6 near the water inlet 5. The side walls of the two filter screens 4 between the inner walls of the filter box 3 rotate the second rotating rod 8 respectively, and one end of the second rotating rod 8 is fixedly connected to mutually meshing gears 9. A belt 10 is provided between one end of the second rotating rod 8 and one end of the first rotating rod 6 through a pulley sleeve, and the side walls of the second rotating rod 8 are all threadedly connected to an outer scraper 11 through a slider, and the outer scraper 11 1 is fixedly connected with a telescopic spring 12, one end of the telescopic spring 12 is fixedly connected with an inner scraper 13, the inner scraper 13 is slidably connected in the outer scraper 11, and one end of the bottom of the inner scraper 13 is in close contact with the top of the filter screen 4, and the side walls of the filter box 3 are fixedly connected with a collection box 14, and the side walls of the collection box 14 close to the two filter screens 4 are slidably connected with an extrusion plate 15, and the extrusion plate 15 is fixedly connected with a first reciprocating spring 16 before the inner wall of the collection box 14 is close to the inner wall of the collection box 14, and the bottom of the inner wall of the collection box 14 is slidably connected with a dirt collection box 17;

[0034] First, water is transported into the water inlet 5. The end of the water inlet 5 close to the filter box 3 is low and one end is wide and the other end is narrow, which will accelerate the flow rate of the sewage. Then the sewage will impact the rotating impeller 7 to increase the speed of the rotating impeller 7 and then flow into the filter box 3. At this time, the sewage will be filtered in turn through the two filter screens 4, and the filtered sewage will flow into the sedimentation box 1. Then, the rotating impeller 7 will rotate due to the impact of the sewage. When the rotating impeller 7 rotates, it will drive the first rotating rod 6 to rotate. When the first rotating rod 6 rotates, it will drive the second rotating rod 8 to rotate through the belt 10. When the second rotating rod 8 rotates, it will drive the gear 9 at one end to rotate. The gear 9 will drive another gear 9 meshed at the bottom to rotate. At this time, another gear 9 will drive another second rotating rod 8 to rotate. Then the second rotating rod 8 will drive the outer scraper 11 at the top of the filter screen 4 to reciprocate. The outer scraper 11 will drive the inner scraper 13 to move on the filter screen 4 and squeeze the inner scraper 13 through the curvature of the filter screen 4. The scraper 13 and the inner scraper 13 will shrink back into the outer scraper 11 and squeeze the telescopic spring 12, so that the bottom of the inner scraper 13 is tightly attached to the top of the filter screen 4, so that it can scrape off impurities more cleanly. When the impurities on the filter screen 4 are scraped to the side wall of the filter screen 4, they will be squeezed to the squeezing plate 15. The squeezing plate 15 is squeezed by the first reciprocating spring 16 to squeeze the filtered impurities, which can effectively remove the water in the impurities. When the outer scraper 11 and the inner scraper 13 are continuously squeezed, the squeezing plate 15 will be squeezed into the collection box 14, and then the impurities will fall into the dirt collecting box 17, so that the impurities can be collected. Through the design of these structures, the sundries filtered on the filter screen 4 can be continuously cleaned, scraped and collected during the filtering process, ensuring the filtering effect and avoiding the clogging of the filter screen 4 during filtering, thereby significantly improving the filtering efficiency. At the same time, there is no need to disassemble and clean the filter screen 4, saving time and effort, reducing the labor level of the staff, and facilitating use.

[0035] For further information, see Attachment Figure 5 , Figure 6As shown, the automatic unloading mechanism includes a storage box 18 fixedly connected to the top of the sedimentation box 1, a unloading barrel 19 fixedly connected to the bottom of the storage box 18, a quantitative tube 20 connected to each other is fixedly connected between the bottom of the storage box 18 and the outer wall of the unloading barrel 19, a first extrusion spring 21 is fixedly connected to the top of the inner wall of the unloading barrel 19, and a blocking push plate 22 is fixedly connected to one end of the first extrusion spring 21, and the top of the blocking push plate 22 slides through the inner wall of the unloading barrel 19 and extends into the bottom of the inner wall of the storage box 18, and the bottom of the inner wall of the sedimentation box 1 slides A sewage collecting leakage plate 29 is connected, and the automatic unloading mechanism also includes a chute frame 23 fixedly connected to the top of the sewage collecting leakage plate 29, a floating block 24 is slidably connected inside the chute frame 23, a support column 25 is fixedly connected to the top of the floating block 24, one end of the support column 25 slides through the top of the chute frame 23 and is fixedly connected to a bulk material tray 26, a leakage barrel 27 is fixedly connected to the top of the bulk material tray 26, and leakage ports 34 are respectively opened on the four faces of the bottom of one end of the leakage barrel 27 close to the bulk material tray 26, and a connecting hole 28 is opened on the side wall of the leakage barrel 27;

[0036] When the automatic unloading mechanism is in use, first put the flocculant particles into the storage box 18. When the sewage in the sedimentation box 1 continues to rise, the floating block 24 will float on the sewage, so that the floating block 24 will slide in the slide frame 23, and then the floating block 24 will drive the support column 25 to move upward, and the support column 25 will drive the bulk material plate 26 to move upward, and the bulk material plate 26 will drive the top leakage barrel 27 to move upward and slide in the unloading barrel 19. When the leakage barrel 27 rises to a certain height, the top of the leakage barrel 27 will squeeze the blocking push plate 22, and the blocking push plate 22 will squeeze the first squeezing spring 21. Then one side of the blocking push plate 22 will block the end of the quantitative tube 20 close to the storage box 18, so that the flocculant particles in the storage box 18 cannot fall into the quantitative tube 20. When the connecting hole 28 rises to the same height as the connecting hole 28, the top of the leakage barrel 27 will squeeze the blocking push plate 22, and the blocking push plate 22 will squeeze the first squeezing spring 21. Then, one side of the blocking push plate 22 will block the end of the quantitative tube 20 close to the storage box 18, so that the flocculant particles in the storage box 18 cannot fall into the quantitative tube 20. When one end of the quantitative tube 20 is on the same horizontal plane, the flocculant particles inside the quantitative tube 20 will fall into the leakage tube 27 through the connecting hole 28 and fall to the top of the bulk material tray 26, and the flocculant particles will roll to the top of the bulk material tray 26 through the leakage port 34. Then, through the shape of the bulk material tray 26 and the holes opened, the flocculant particles can evenly roll into the sedimentation tank 1 to achieve quantitative input. By quantitatively inputting flocculants, the rapid precipitation of impurities in the sewage in the sedimentation tank 1 can be effectively promoted. This precise dosage control can ensure the best flocculation effect, thereby improving the precipitation efficiency, accelerating the rapid precipitation of impurities in the sewage in the sedimentation tank 1, reducing the precipitation time, and accelerating the efficiency of sewage treatment. At the same time, it also avoids the waste caused by excessive input, thereby reducing the sewage treatment cost and facilitating use.

[0037] For further information, see Attachment Figure 3 As shown, a water baffle 32 is fixedly connected to the side wall of one end of the water inlet 5 close to the filter box 3 to prevent sewage from splashing.

[0038] For further information, see Attachment Figure 4 As shown, the inner walls of the collection box 14 are fixedly connected with guide blocks 33 which are separated from each other. The guide blocks 33 prevent the fallen debris from falling onto the squeezing plate 15 at the bottom, thereby affecting the collection of the debris.

[0039] The present application also provides a sewage multi-stage separation treatment method, using the above-mentioned sewage multi-stage separation treatment device, comprising the following steps:

[0040] S1. Filtration: First, water is transported into the water inlet 5, and then the sewage will impact the rotating impeller 7 and flow into the filter box 3. At this time, the sewage will be filtered in turn through the two filter screens 4. After the sewage is filtered in multiple stages through the filter screens 4, the debris will remain on the filter screens 4, and the filtered sewage will flow into the sedimentation box 1.

[0041] S2. Cleaning and collection: The rotating impeller 7 rotates by itself due to the impact of sewage. When the rotating impeller 7 rotates, it drives the first rotating rod 6 to rotate. The first rotating rod 6 drives the second rotating rod 8 to rotate through the belt 10. The second rotating rod 8 drives the gear 9 at one end to rotate. The gear 9 drives another gear 9 meshed at the bottom to rotate. At this time, another gear 9 drives another second rotating rod 8 to rotate. Then the second rotating rod 8 drives the outer scraper 11 at the top of the filter screen 4 to move back and forth. The outer scraper 11 drives The inner scraper 13 moves on the filter screen 4, and the telescopic spring 12 is arranged in the outer scraper 11 to make the bottom of the inner scraper 13 close to the top of the filter screen 4. When the impurities on the filter screen 4 are scraped to the side wall of the filter screen 4, they will be squeezed to the squeezing plate 15, and the squeezing plate 15 is squeezed by the first reciprocating spring 16 to squeeze the filtered impurities. When the outer scraper 11 and the inner scraper 13 are continuously squeezed, the squeezing plate 15 will be squeezed into the collection box 14, and then the impurities will fall into the dirt collecting box 17, so that the impurities can be collected.

[0042] S3, rapid sedimentation: first, put the flocculant particles into the storage box 18. When the sewage in the sedimentation box 1 continues to rise, the floating block 24 will float on the sewage and slide in the chute frame 23. Then the floating block 24 will drive the support column 25, the bulk material tray 26 and the leakage barrel 27 to move upward. At this time, the leakage barrel 27 will slide in the lower barrel 19. When the leakage barrel 27 rises to a certain height, the top of the leakage barrel 27 will squeeze the blocking push plate 22 and the first squeezing spring 21, and then one side of the blocking push plate 22 will block the quantitative The tube 20 is close to one end of the storage box 18, so that the flocculant particles in the storage box 18 cannot fall into the quantitative tube 20. When the connecting hole 28 rises to the same horizontal plane as one end of the quantitative tube 20, the flocculant particles inside the quantitative tube 20 will fall into the leakage tube 27 through the connecting hole 28 and fall to the top of the bulk material tray 26. The flocculant particles will roll to the top of the bulk material tray 26 through the leakage port 34. Then, through the shape of the bulk material tray 26 and the holes opened, the flocculant particles can evenly roll into the sedimentation box 1, thereby realizing quantitative input.

[0043] By adopting the above-mentioned sewage multi-stage separation treatment method, the rotating impeller 7 is impacted by the sewage and rotates to drive the outer scraper 11 and the inner scraper 13 to move. During the filtering process, the debris filtered on the filter screen 4 can be continuously cleaned and scraped off and squeezed into the collection box 14 for collection, ensuring the filtering effect and avoiding the clogging of the filter screen 4 during filtering, thereby significantly improving the filtering efficiency. At the same time, there is no need to disassemble and clean the filter screen 4, saving time and effort, and reducing the labor degree of the staff. Secondly, by quantitatively adding flocculants, the rapid precipitation of impurities in the sewage in the sedimentation box 1 can be effectively promoted. This precise dosage control can ensure the best flocculation effect, thereby improving the precipitation efficiency, accelerating the rapid precipitation of impurities in the sewage in the sedimentation box 1, reducing the precipitation time, and accelerating the efficiency of sewage treatment. At the same time, it also avoids the waste caused by excessive input, thereby reducing the sewage treatment cost and improving the treatment efficiency. In summary, the use of a sewage multi-stage separation treatment method can ensure the effect of filtering and cleaning, save time and effort, reduce the labor degree of the staff, and reduce the precipitation time, thereby significantly improving the filtering efficiency.

[0044] Those skilled in the art should understand that the discussion of any of the above embodiments is merely illustrative and is not intended to imply that the scope of the present invention (including the claims) is limited to these examples. Under the concept of the present invention, the technical features in the above embodiments or different embodiments may be combined, the steps may be implemented in any order, and there are many other variations of the different aspects of the present invention as described above, which are not provided in detail for the sake of simplicity.

[0045] The present invention is intended to cover all such substitutions, modifications and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A sewage multi-stage separation treatment device, comprising a sedimentation tank (1), wherein the side wall of the sedimentation tank (1) is inlaid with a glass observation window (2) for observing the interior of the sedimentation tank (1), the bottom of the sedimentation tank (1) is provided with a drain port (30), and the interior of the drain port (30) is provided with a solenoid valve (31), characterized in that: The top of the sedimentation box (1) is fixedly connected to a filter box (3), two filter screens (4) for filtering sewage are fixedly connected inside the filter box (3), a water inlet (5) is fixedly connected to one side of the filter box (3), one end of the water inlet (5) is inclined toward the filter screen (4), a cleaning mechanism for cleaning the filter screen (4) is provided inside the filter box (3), and a feeding mechanism for automatically feeding sewage precipitated in the sedimentation box (1) is provided inside the sedimentation box (1); the cleaning mechanism comprises a first rotating rod (6) rotatably connected between the inner walls of the filter box (3), the first rotating rod (6) The outer wall of the rod (6) is fixedly connected to a rotating impeller (7) at one end of the side wall near the water inlet (5); the inner wall of the filter box (3) is provided with a second rotating rod (8) at the side wall near the two filter screens (4) for rotation; one end of the second rotating rod (8) is fixedly connected to a mutually meshing gear (9); a belt (10) is provided between one end of the second rotating rod (8) and one end of the first rotating rod (6) via a pulley sleeve; the side walls of the second rotating rod (8) are threadedly connected to an outer scraper (11) via a slider; the inner part of the outer scraper (11) is fixedly connected to a telescopic spring (12); the telescopic spring (12) One end of the filter box (3) is fixedly connected to an inner scraper (13), the inner scraper (13) is slidably connected inside the outer scraper (11), and one end of the bottom of the inner scraper (13) is in close contact with the top of the filter screen (4); both side walls of the filter box (3) are fixedly connected to a collection box (14), and the inner side walls of the collection box (14) close to the two filter screens (4) are slidably connected to an extrusion plate (15), and a first reciprocating spring (16) is fixedly connected between the extrusion plate (15) and the inner wall of the collection box (14), and the bottom of the inner wall of the collection box (14) is slidably connected to a dirt collection box (17); the unloading mechanism includes a A material storage box (18) is disposed on the top of the sedimentation box (1), the bottom of the material storage box (18) is fixedly connected to a lower material barrel (19), a quantitative tube (20) is fixedly connected between the bottom of the material storage box (18) and the outer wall of the lower material barrel (19), the top of the inner wall of the lower material barrel (19) is fixedly connected to a first extrusion spring (21), one end of the first extrusion spring (21) is fixedly connected to a blocking push plate (22), the top of the blocking push plate (22) slides through the inner wall of the lower material barrel (19) and extends into the bottom of the inner wall of the material storage box (18), and the bottom of the inner wall of the sedimentation box (1) is slidably connected to a sewage collecting leakage plate (29);The material discharge mechanism further comprises a chute frame (23) fixedly connected to the top of the sewage collecting leakage plate (29); a floating block (24) is slidably connected inside the chute frame (23); a support column (25) is fixedly connected to the top of the floating block (24); a top of one end of the support column (25) slides through the top of the chute frame (23) and is fixedly connected to a bulk material tray (26); a material leakage barrel (27) is fixedly connected to the top of the bulk material tray (26); four surfaces of the bottom of one end of the material leakage barrel (27) close to the bulk material tray (26) are respectively provided with material leakage ports (34); a side wall of the material leakage barrel (27) is provided with a connecting hole (28); when the sewage in the sedimentation tank (1) continues to rise, the floating block (24) will float on the sewage and float in the chute frame (23); Slide, then the floating block (24) will drive the support column (25), the bulk material tray (26) and the leakage barrel (27) to move upward, at which time the leakage barrel (27) will slide in the lower barrel (19), and when the leakage barrel (27) rises to a certain height, the top of the leakage barrel (27) will squeeze the blocking push plate (22) and the first squeezing spring (21), and then one side of the blocking push plate (22) will block the end of the quantitative tube (20) close to the material storage box (18), so that the flocculant particles in the material storage box (18) cannot fall into the quantitative tube (20), and when the connecting hole (28) rises to the same horizontal plane as one end of the quantitative tube (20), the flocculant particles in the quantitative tube (20) will fall into the leakage barrel (27) through the connecting hole (28) and fall onto the top of the bulk material tray (26). ; 2. A sewage multi-stage separation treatment device according to claim 1, characterized in that: A water baffle (32) for preventing sewage from splashing is fixedly connected to a side wall of one end of the water inlet (5) close to the filter box (3).

3. A sewage multi-stage separation treatment device according to claim 1, characterized in that: Guide blocks (33) that are separated from each other are fixedly connected to both sides of the inner wall of the collection box (14).

4. A method for multi-stage separation of sewage, using a multi-stage separation device for sewage as claimed in any one of claims 1 to 3, characterized in that: The following steps are involved: S1, filtration: first, water is transported into the water inlet (5), and then the sewage impacts the rotating impeller (7) and flows into the filter box (3). At this time, the sewage is filtered in turn through two filter screens (4). After the sewage is filtered through the filter screens (4) at multiple stages, the impurities will remain on the filter screens (4), and the filtered sewage will flow into the sedimentation box (1); S2. Cleaning and collection: The rotating impeller (7) rotates due to the impact of sewage. When the rotating impeller (7) rotates, it drives the first rotating rod (6) to rotate. The first rotating rod (6) drives the second rotating rod (8) to rotate through the belt (10). The second rotating rod (8) drives the gear (9) at one end to rotate. The gear (9) drives another gear (9) meshed at the bottom to rotate. At this time, the other gear (9) drives another second rotating rod (8) to rotate. Then, the second rotating rod (8) drives the outer scraper (11) at the top of the filter screen (4) to move back and forth. The outer scraper (11) The inner scraper (11) drives the inner scraper (13) to move on the filter screen (4), and the bottom of the inner scraper (13) is closely attached to the top of the filter screen (4) by arranging a telescopic spring (12) in the outer scraper (11). When the impurities on the filter screen (4) are scraped onto the side wall of the filter screen (4), the extrusion plate (15) is squeezed by the first reciprocating spring (16), so that the extrusion plate (15) is squeezed to squeeze the filtered impurities. When the outer scraper (11) and the inner scraper (13) are continuously squeezed, the extrusion plate (15) is squeezed into the collection box (14), and then the impurities fall into the dirt collection box (17); S3, rapid sedimentation: firstly, the flocculant particles are placed into the storage box (18), and the flocculant particles are rolled down to the top of the bulk material tray (26) through the leakage port (34), and then the flocculant particles are rolled down into the sedimentation box (1) by the shape and holes of the bulk material tray (26). Then, the impurities in the sewage are precipitated on the sewage collecting leakage plate (29), and then the solenoid valve (31) is opened, and the sewage is discharged from the drain port (30).

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