A screw conveyor for sewage treatment and its method

Abstract

The present invention relates to the field of conveying technology, and discloses a screw conveyor for sewage treatment and its method, which solves the problem of inconvenient cleaning of the filter screen. It includes a screw conveyor box, and the two ends of the screw conveyor box are respectively fixedly connected with a sewage inlet pipe and a sewage discharge pipe. A screw conveying mechanism is arranged in the screw conveyor box. Drainage holes are formed in the inner wall of the screw conveyor box. A drainage hopper adapted to the drainage holes is fixedly connected to the bottom of the screw conveyor box, and the drainage hopper is located on the side of the sewage discharge pipe facing the sewage inlet pipe. A rotating shell is arranged in the middle of the drainage hopper, and a driving mechanism for driving the rotating shell to rotate is installed on the drainage hopper; Filter screens adapted to the drainage holes are respectively arranged above and below the rotating shell, and fixing columns are fixedly connected to the sides of the two filter screens close to each other. A sliding groove is formed in the fixing column; it is convenient to clean the impurities on the filter screen, reduce the influence on the filtering efficiency, and facilitate actual use.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying, and specifically relates to a screw conveyor for sewage treatment and a method thereof. Background Art

[0002] A screw conveyor is a machine that uses an electric motor to drive the rotation of a screw blade, and then pushes materials through the screw blade to achieve the purpose of conveying. In the process of sewage treatment, larger impurities need to be removed first, and a screw conveyor is often used to remove these impurities;

[0003] However, it is worth considering that there is often some sewage in the removed impurities. When filtering the sewage mixture through a filter screen, the impurities are easily blocked on the filter screen, which is not convenient for cleaning the filter screen, affects the filtering efficiency, and has certain limitations.

[0004] Therefore, in order to solve the above problems, there is a need for the emergence of related facilities that are more in line with the usage requirements. Summary of the Invention

[0005] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a screw conveyor for sewage treatment and a method thereof, effectively solving the problem that it is not convenient to clean the filter screen in the above background art.

[0006] To achieve the above object, the present invention provides the following technical solution: A screw conveyor for sewage treatment, including a screw conveying box, both ends of the screw conveying box are respectively fixedly connected with a sewage inlet pipe and a sewage discharge pipe, a screw conveying mechanism is arranged inside the screw conveying box, drainage holes are opened on the inner wall of the screw conveying box, a drainage hopper adapted to the drainage holes is fixedly connected to the bottom of the screw conveying box, and the drainage hopper is located on the side of the sewage discharge pipe facing the sewage inlet pipe. A rotating shell is arranged in the middle of the drainage hopper, and a driving mechanism for driving the rotating shell to rotate is installed on the drainage hopper;

[0007] Filter screens adapted to the drainage holes are respectively arranged above and below the rotating shell. Fixing columns are respectively fixedly connected to the sides of the two filter screens close to each other. A sliding groove is opened in the fixing column, a prism is slidably arranged in the sliding groove, and the prism is fixedly connected to the rotating shell. An elastic support assembly adapted to the fixing column is installed on the prism, and an adjustment and disassembly structure for adjusting the position of the fixing column is installed on the drainage hopper.

[0008] Preferably, the adjustment and disassembly structure includes a first support column and a second support column respectively and fixedly installed on both sides of the fixed column. A stop block adapted to the second support column is fixedly connected inside the drain hopper, and the stop block is located above the two second support columns. A first arc-shaped plate and a second arc-shaped plate adapted to the first support column are provided inside the drain hopper. The first arc-shaped plate is of a C-shaped structure, and the second arc-shaped plate is located at the notch of the first arc-shaped plate. The first arc-shaped plate and the second arc-shaped plate respectively form gaps in the vertical and horizontal directions, and the sizes of the gaps are all adapted to the first support column. The first arc-shaped plate and the second arc-shaped plate are respectively fixedly connected to the inner wall of the drain hopper through connecting columns. The drain hopper is equipped with a toggler for toggling the first support column. A support transition unit adapted to the first arc-shaped plate and the second arc-shaped plate is provided inside the drain hopper. The support transition unit is located on one side of the gap in the horizontal direction. A second rectangular hole is opened on one side wall of the drain hopper, and an opening and closing member adapted to the second rectangular hole is provided on the outer wall of the drain hopper.

[0009] Preferably, the toggler includes a sealing plate arranged inside the drain hopper. One side of the sealing plate is in contact with the inner wall of the drain hopper, and a first support block and a second support block are respectively fixedly connected to the other side of the sealing plate. The first support block is located above the second support block, and the two first support columns are located between the first support block and the second support block. A first rectangular hole is opened on the inner wall of the drain hopper. The sealing plate is fixedly installed with a first support portion, and the first support portion penetrates through the first rectangular hole. A first hydraulic telescopic rod is fixedly connected to the outer wall of the drain hopper, and the telescopic end of the first hydraulic telescopic rod is fixedly connected to the first support portion.

[0010] Preferably, the support transition unit includes a first rotating shaft rotatably installed on the drain hopper. One end of the first rotating shaft is fixedly connected with a gear located outside the drain hopper, and the other end of the first rotating shaft is fixedly connected with a first baffle plate adapted to the first arc-shaped plate and the second arc-shaped plate, and the first baffle plate is located inside the drain hopper. A second hydraulic telescopic rod is fixedly connected to the outer wall of the drain hopper, and the telescopic end of the second hydraulic telescopic rod is fixedly connected with a rack meshing with the gear.

[0011] Preferably, the opening and closing member includes a sealing cover arranged outside the drain hopper. The sealing cover is in contact with the outer wall of the drain hopper, and the bottom end of the sealing cover is rotatably connected to the drain hopper. A second baffle plate is provided in contact with the side of the sealing cover away from the drain hopper. A second support portion is slidably sleeved outside the second baffle plate. The second support portion is fixedly connected to the outer wall of the drain hopper and is located above the sealing cover. The top end of the second baffle plate is fixedly connected with a limiting disk located above the second support portion.

[0012] Preferably, the driving mechanism includes a second rotating shaft rotatably mounted on the drainage hopper. One end of the second rotating shaft is fixedly connected to the rotating shell, and a first bevel gear is fixedly sleeved on the other end of the second rotating shaft. The first bevel gear is located outside the drainage hopper. A first servo motor is fixedly connected to the outer wall of the drainage hopper, and an output end of the first servo motor is fixedly connected to a second bevel gear meshing with the first bevel gear.

[0013] Preferably, the elastic support assembly includes a support disk arranged on the side of the prism away from the rotating shell. The support disk is located in the sliding groove. A first spring is arranged in the sliding groove, and two ends of the first spring respectively abut against the inner wall of the sliding groove and the support disk. A groove is formed in the prism, and a movable column penetrates through the prism. The movable column is fixedly connected to the support disk. A second spring is sleeved outside the movable column and is located in the groove. Two ends of the second spring are respectively fixedly connected to the inner wall of the groove and the support disk. The drainage hopper is provided with a pushing unit for pushing the movable column to move.

[0014] Preferably, the pushing unit includes a frustum arranged in the rotating shell. One end of the movable column away from the support disk contacts the inclined surface of the frustum. The frustum is fixedly installed with a fixed shaft, and the fixed shaft penetrates through the second rotating shaft. A third hydraulic telescopic rod is fixedly connected to the outer wall of the drainage hopper, and a telescopic end of the third hydraulic telescopic rod and the fixed shaft are fixedly connected through a connecting plate.

[0015] Preferably, the screw conveyor mechanism includes a support shaft rotatably mounted in the screw conveyor box. A screw blade is fixedly sleeved outside the support shaft and is located in the screw conveyor box. A second servo motor is fixedly connected to the outer wall of the screw conveyor box, and an output end of the second servo motor is fixedly connected to the support shaft. A base is fixedly connected to the bottom of the screw conveyor box.

[0016] The present invention also provides a method for screw conveying in sewage treatment, using the sewage treatment screw conveyor as described above, including the following steps:

[0017] Step 1: The sewage mixture enters the screw conveyor box through the sewage inlet pipe, and the screw conveyor mechanism conveys the sewage mixture in the screw conveyor box.

[0018] Step 2: When the sewage mixture moves above the drainage hole, the sewage mixture is filtered through the filter screen located in the drainage hole. The sewage enters the drainage hopper through the filter screen, and the screw conveyor mechanism conveys the remaining impurities above the sewage discharge pipe, and the impurities are discharged through the sewage discharge pipe.

[0019] Step 3: When the filter screen needs to be cleaned, by adjusting the disassembly and assembly structure, one fixed column located above and the filter screen are driven to move downward relative to the prism, so that the filter screen is separated from the drainage hole, and then the rotating shell, the prism and the fixed column are driven to rotate 180 degrees through the driving mechanism, and the filter screen originally located below rotates to the above.

[0020] Step 4: Drive the fixed column and the filter net located above at this time to move upward by adjusting the disassembly and assembly structure, so that the corresponding filter net is inserted into the drain hole, and drive the fixed column and the filter net located below at this time to vibrate in the vertical direction by adjusting the disassembly and assembly structure, so that the impurities on the filter net fall off by shaking.

[0021] Compared with the prior art, the beneficial effects of the present invention are:

[0022] When the sewage mixture moves to the upper part of the drain hole, the sewage mixture is filtered by the filter net located in the drain hole. The sewage enters the drain hopper through the filter net, and the remaining impurities are conveyed to the upper part of the sewage discharge pipe by the screw conveyor mechanism, and the impurities are discharged through the sewage discharge pipe. When it is necessary to clean the filter net, drive a fixed column and the filter net located above to move downward relative to the prism by adjusting the disassembly and assembly structure, so that the filter net is separated from the drain hole. Then drive the rotating shell, the prism and the fixed column to rotate 180 degrees by the driving mechanism. The filter net originally located below rotates to the upper part. Drive the fixed column and the filter net located above at this time to move upward by adjusting the disassembly and assembly structure, so that the corresponding filter net is inserted into the drain hole, and drive the fixed column and the filter net located below at this time to vibrate in the vertical direction by adjusting the disassembly and assembly structure, so that the impurities on the filter net fall off by shaking, which is convenient for cleaning the impurities on the filter net, reduces the influence on the filtration efficiency, and is convenient for actual use. Brief Description of the Drawings

[0023] The drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention, and do not constitute a limitation to the present invention.

[0024] In the drawings:

[0025] Figure 1 is the schematic structural diagram of the whole of the present invention;

[0026] Figure 2 is the schematic structural diagram inside the screw conveyor box of the present invention;

[0027] Figure 3 is one of the schematic structural diagrams of the outside of the drain hopper of the present invention;

[0028] Figure 4 is the other schematic structural diagram of the outside of the drain hopper of the present invention;

[0029] Figure 5 is the schematic structural diagram inside the drain hopper of the present invention;

[0030] Figure 6 is the schematic structural diagram of the section of the rotating shell, the prism and the fixed column of the present invention;

[0031] Figure 7 The present invention Figure 6 Partial enlarged schematic view at A in the present invention;

[0032] Figure 8 Structural schematic diagram of the sealing plate of the present invention;

[0033] Figure 9 Structural schematic diagram of the support transition unit of the present invention.

[0034] In the figure: 1, screw conveyor box; 2, sewage inlet pipe; 3, sewage discharge pipe; 4, drain hole; 5, drain hopper; 6, rotating shell; 7, prism; 8, fixed column; 9, chute; 10, first spring; 11, filter screen; 12, support plate; 13, first support column; 14, second support column; 15, stop block; 16, first arc plate; 17, second arc plate; 18, connecting column; 19, sealing plate; 20, first support block; 21, second support block; 22, first rectangular hole; 23, first support part; 24, first hydraulic telescopic rod; 25, first baffle; 26, second rectangular hole; 27, sealing cover; 28, second baffle; 29, second support part; 30, limit disk; 31, first rotating shaft; 32, gear; 33, rack; 34, second hydraulic telescopic rod; 35, second rotating shaft; 36, first bevel gear; 37, first servo motor; 38, second bevel gear; 39, frustum; 40, groove; 41, movable column; 42, second spring; 43, fixed shaft; 44, third hydraulic telescopic rod; 45, connecting plate; 46, support shaft; 47, screw blade; 48, second servo motor; 49, base. Specific embodiments

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments; based on the embodiments in the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1, given by Figure 1 , Figure 2 , Figure 4 and Figure 6 The present invention includes a screw conveyor box 1. The two ends of the screw conveyor box 1 are respectively fixedly connected with a sewage inlet pipe 2 and a sewage discharge pipe 3. A screw conveying mechanism is provided in the screw conveyor box 1. Drain holes 4 are opened on the inner wall of the screw conveyor box 1. A drain hopper 5 adapted to the drain holes 4 is fixedly connected to the bottom of the screw conveyor box 1, and the drain hopper 5 is located on the side of the sewage discharge pipe 3 facing the sewage inlet pipe 2. A rotating shell 6 is provided in the middle of the drain hopper 5, and a driving mechanism for driving the rotating shell 6 to rotate is installed on the drain hopper 5;

[0037] Above and below the rotating shell 6, filter nets 11 adapted to the drain holes 4 are respectively provided. On the sides of the two filter nets 11 close to each other, fixing columns 8 are respectively fixedly connected. A sliding groove 9 is formed in the fixing column 8. A prism 7 is slidably arranged in the sliding groove 9, and the prism 7 is fixedly connected to the rotating shell 6. The prism 7 is equipped with an elastic support assembly adapted to the fixing column 8. The drain hopper 5 is equipped with an adjustment and disassembly structure for adjusting the position of the fixing column 8; when the sewage mixture moves above the drain hole 4, the sewage mixture is filtered by the filter net 11 located in the drain hole 4. The sewage enters the drain hopper 5 through the filter net 11. The remaining impurities are conveyed above the sewage discharge pipe 3 through the screw conveyor mechanism, and the impurities are discharged through the sewage discharge pipe 3. When it is necessary to clean the filter net 11, one of the fixing columns 8 and the filter net 11 located above is driven to move downward relative to the prism 7 through the adjustment and disassembly structure, so that the filter net 11 is separated from the drain hole 4. Then, the rotating shell 6, the prism 7 and the fixing column 8 are driven to rotate 180 degrees through the driving mechanism. The filter net 11 originally located below rotates to the above. The fixing column 8 and the filter net 11 located above at this time are driven to move upward through the adjustment and disassembly structure, so that the corresponding filter net 11 is inserted into the drain hole 4. And the fixing column 8 and the filter net 11 located below at this time are driven to vibrate in the vertical direction through the adjustment and disassembly structure, so that the impurities on the filter net 11 fall off, which is convenient for cleaning the impurities on the filter net 11, reduces the influence on the filtration efficiency, and is convenient for actual use.

[0038] Example 2, on the basis of Example 1, by Figure 1 、 Figure 3 、 Figure 4 、 Figure 5 、 Figure 6 、 Figure 8 and Figure 9Provided that the disassembly and assembly structure includes a first support column 13 and a second support column 14 respectively and fixedly installed on both sides of the fixed column 8. A stop block 15 adapted to the second support column 14 is fixedly connected inside the drain hopper 5, and the stop block 15 is located above the two second support columns 14. A first arc plate 16 and a second arc plate 17 that cooperate with the first support column 13 are provided inside the drain hopper 5. The first arc plate 16 is of a C-shaped structure, and the second arc plate 17 is located at the notch of the first arc plate 16. The first arc plate 16 and the second arc plate 17 respectively form gaps in the vertical and horizontal directions, and the sizes of the gaps are all adapted to the first support column 13. The first arc plate 16 and the second arc plate 17 are respectively fixedly connected to the inner wall of the drain hopper 5 through connecting columns 18. The drain hopper 5 is equipped with a toggler for toggling the first support column 13. A support transition unit that cooperates with the first arc plate 16 and the second arc plate 17 is provided inside the drain hopper 5. The support transition unit is located on one side of the gap in the horizontal direction. A second rectangular hole 26 is opened on one side wall of the drain hopper 5. An opening and closing member adapted to the second rectangular hole 26 is provided on the outer wall of the drain hopper 5. The toggler includes a sealing plate 19 provided inside the drain hopper 5. One side of the sealing plate 19 is in contact with the inner wall of the drain hopper 5. The other side of the sealing plate 19 is respectively fixedly connected with a first support block 20 and a second support block 21. The first support block 20 is located above the second support block 21, and the two first support columns 13 are located between the first support block 20 and the second support block 21. A first rectangular hole 22 is opened on the inner wall of the drain hopper 5. The sealing plate 19 is fixedly installed with a first support portion 23, and the first support portion 23 penetrates through the first rectangular hole 22. A first hydraulic expansion link 24 is fixedly connected to the outer wall of the drain hopper 5, and the telescopic end of the first hydraulic expansion link 24 is fixedly connected to the first support portion 23. The support transition unit includes a first rotating shaft 31 rotatably installed on the drain hopper 5. One end of the first rotating shaft 31 is fixedly connected with a gear 32 located outside the drain hopper 5. The other end of the first rotating shaft 31 is fixedly connected with a first baffle 25 that cooperates with the first arc plate 16 and the second arc plate 17, and the first baffle 25 is located inside the drain hopper 5. A second hydraulic expansion link 34 is fixedly connected to the outer wall of the drain hopper 5, and the telescopic end of the second hydraulic expansion link 34 is fixedly connected with a rack 33 that meshes with the gear 32. The opening and closing member includes a sealing cover 27 provided outside the drain hopper 5. The sealing cover 27 is in contact with the outer wall of the drain hopper 5. The bottom end of the sealing cover 27 is rotatably connected to the drain hopper 5. A second baffle 28 is provided in contact with the side of the sealing cover 27 away from the drain hopper 5. A second support portion 29 is slidably sleeved outside the second baffle 28. The second support portion 29 is fixedly connected to the outer wall of the drain hopper 5, and the second support portion 29 is located above the sealing cover 27. The top end of the second baffle 28 is fixedly connected with a limit disk 30 located above the second support portion 29;

[0039] The prism 7 elastically supports the fixed column 8 and the filter screen 11 through an elastic support assembly. The bottom of the stop block 15 contacts the second support column 14 located above. The positions of the second support column 14 and the fixed column 8 are limited by the stop block 15 to ensure that the filter screen 11 located above is within the drain hole 4. When it is necessary to switch the positions of the two filter screens 11, the first hydraulic telescopic rod 24 drives the first support portion 23, the sealing plate 19, the first support block 20, and the second support block 21 to move downward. The first support block 20 presses the first support column 13 located above to move downward, so that the first support column 13 passes through between the second arc plate 17 and the first arc plate 16. When the filter screen 11 located above disengages from the drain hole 4, the rotating shell 6, the prism 7, and the fixed column 8 are driven to rotate by the driving mechanism. The first support column 13 located above slides from the first support block 20 onto the first arc plate 16, and the first support column 13 located below slides from the first arc plate 16, the first baffle 25, and the second arc plate 17 onto the first support block 20 in sequence. The first hydraulic telescopic rod 24 drives the first support portion 23 and the sealing plate 19 to move up to the initial height. The first support block 20 no longer presses the first support column 13 located above, and the elastic support assembly drives the fixed column 8 and the filter screen 11 located above to move up, so that the filter screen 11 moves into the drain hole 4. Then the first hydraulic telescopic rod 24 drives the first support portion 23 and the sealing plate 19 to move up, and the second support block 21 supports the first support column 13 located below to move up. When the second support block 21 moves up to the preset height, the first hydraulic telescopic rod 24 drives the sealing plate 19 and the second support block 21 to move downward again. The second support block 21 no longer supports the first support column 13. At this time, the elastic support assembly drives the fixed column 8 located below to move downward, so that the first support column 13 impacts the first arc plate 16, and the impurities on the filter screen 11 located below can be shaken off. When it is necessary to remove the filter screen 11, the rotating shell 6 is driven to rotate by 90 degrees through the driving mechanism, so that the fixed column 8 located below drives the first support column 13 to rotate to one side of the first baffle 25, and the first baffle 25 supports the first support column 13. At this time, the second hydraulic telescopic rod 34 drives the toothed plate 33 to move, and the toothed plate 33 drives the first rotating shaft 31 and the first baffle 25 to rotate through the gear 32, so that the first baffle 25 no longer blocks the first support column 13. The staff drives the limit disk 30 and the second baffle 28 to move up, so that the second baffle 28 no longer blocks the sealing cover 27. The staff drives the sealing cover 27 to rotate relative to the drain hopper 5, and the second rectangular hole 26 can be opened. Since the first baffle 25 no longer blocks and limits the first support column 13 and the fixed column 8 at this time, the staff drives the filter screen 11 and the fixed column 8 to slide relative to the prism 7, so that the prism 7 disengages from the sliding groove 9, and the filter screen 11 can be taken out of the drain hopper 5 through the second rectangular hole 26.

[0040] Embodiment 3, on the basis of Embodiment 1, by Figure 1, Figure 2 , Figure 3 , Figure 5 , Figure 6 and Figure 7 are given. The driving mechanism includes a second rotating shaft 35 rotatably mounted on the drain hopper 5. One end of the second rotating shaft 35 is fixedly connected to the rotating shell 6, and a first bevel gear 36 is fixedly sleeved on the other end of the second rotating shaft 35, and the first bevel gear 36 is located outside the drain hopper 5. A first servo motor 37 is fixedly connected to the outer wall of the drain hopper 5, and an output end of the first servo motor 37 is fixedly connected to a second bevel gear 38 meshing with the first bevel gear 36. The elastic support assembly includes a support disk 12 arranged on the side of the prism 7 away from the rotating shell 6. The support disk 12 is located in the sliding groove 9. A first spring 10 is arranged in the sliding groove 9, and two ends of the first spring 10 are respectively abutted against the inner wall of the sliding groove 9 and the support disk 12. A groove 40 is formed in the prism 7, and a movable column 41 penetrates through the prism 7, and the movable column 41 is fixedly connected to the support disk 12. A second spring 42 located in the groove 40 is sleeved on the outside of the movable column 41, and two ends of the second spring 42 are respectively fixedly connected to the inner wall of the groove 40 and the support disk 12. The drain hopper 5 is provided with a pushing unit for pushing the movable column 41 to move. The pushing unit includes a frustum 39 arranged in the rotating shell 6, and one end of the movable column 41 away from the support disk 12 is in contact with the inclined surface of the frustum 39. A fixed shaft 43 is fixedly installed on the frustum 39, and the fixed shaft 43 penetrates through the second rotating shaft 35. A third hydraulic telescopic rod 44 is fixedly connected to the outer wall of the drain hopper 5, and a telescopic end of the third hydraulic telescopic rod 44 and the fixed shaft 43 are fixedly connected through a connecting plate 45. The screw conveyor mechanism includes a support shaft 46 rotatably mounted in the screw conveyor box 1. A screw blade 47 located in the screw conveyor box 1 is fixedly sleeved on the outside of the support shaft 46. A second servo motor 48 is fixedly connected to the outer wall of the screw conveyor box 1, and an output end of the second servo motor 48 is fixedly connected to the support shaft 46. A base 49 is fixedly connected to the bottom of the screw conveyor box 1;

[0041] The third hydraulic telescopic rod 44 drives the connecting plate 45 and the fixed shaft 43 to move. The fixed shaft 43 can drive the frustum 39 to move within the rotating shell 6. The end of the movable column 41 slides on the inclined surface of the frustum 39. The frustum 39 can then support the movable column 41 and the support disk 12 to move relative to the fixed column 8. The support disk 12 pushes the first spring 10, causing the first spring 10 to be in a compressed state, thereby changing the length of the first spring 10 and controlling the pressure exerted by the first spring 10 on the fixed column 8 and the filter net 11. And the second spring 42 is in a stretched state. When the frustum 39 moves in the reverse horizontal direction, the second spring 42 drives the support disk 12 and the movable column 41 to move in the reverse direction, so that the end of the movable column 41 always remains in close contact with the inclined surface on the frustum 39. The movable column 41 slides in the reverse direction on the inclined surface of the frustum 39. The first servo motor 37 drives the second bevel gear 38 to rotate. The second bevel gear 38 can drive the second rotating shaft 35 and the rotating shell 6 to rotate through the first bevel gear 36. And the second rotating shaft 35 and the rotating shell 6 rotate relative to the fixed shaft 43 and the frustum 39. The movable column 41 rotates around the axis of the fixed shaft 43 and the frustum 39. The movable column 41 is stationary relative to the prism 7. The base 49 supports the screw conveyor box 1. The second servo motor 48 drives the support shaft 46 and the screw blade 47 to rotate. The screw blade 47 can then convey the sewage mixture in the screw conveyor box 1.

[0042] A method for screw conveyance in sewage treatment of this embodiment uses the screw conveyor for sewage treatment as described above and includes the following steps:

[0043] Step 1: The sewage mixture enters the screw conveyor box 1 through the sewage inlet pipe 2, and the screw conveying mechanism conveys the sewage mixture in the screw conveyor box 1.

[0044] Step 2: When the sewage mixture moves above the drain hole 4, the sewage mixture is filtered through the filter net 11 located in the drain hole 4. The sewage enters the drain hopper 5 through the filter net 11. The remaining impurities are conveyed above the sewage discharge pipe 3 by the screw conveying mechanism, and the impurities are discharged through the sewage discharge pipe 3.

[0045] Step 3: When it is necessary to clean the filter net 11, the disassembly and assembly structure is adjusted to drive one of the fixed columns 8 and the filter net 11 located above to move downward relative to the prism 7, so that the filter net 11 is separated from the drain hole 4. Then, the driving mechanism is used to drive the rotating shell 6, the prism 7 and the fixed column 8 to rotate 180 degrees, and the filter net 11 originally located below rotates to the above.

[0046] Step 4: Drive the fixed column 8 and the filter screen 11 located above at this time to move upward through the disassembly and assembly structure, so that the corresponding filter screen 11 is inserted into the drain hole 4, and drive the fixed column 8 and the filter screen 11 located below at this time to vibrate in the vertical direction through the disassembly and assembly structure, so that the impurities on the filter screen 11 fall off by shaking.

[0047] Working principle: The sewage mixture enters the spiral conveying box 1 through the sewage inlet pipe 2, and the sewage mixture in the spiral conveying box 1 is conveyed by the spiral conveying mechanism. When the sewage mixture moves above the drain hole 4, the sewage mixture is filtered by the filter screen 11 located in the drain hole 4, and the sewage enters the drain hopper 5 through the filter screen 11. The remaining impurities are conveyed to the upper part of the sewage discharge pipe 3 by the spiral conveying mechanism, and the impurities are discharged through the sewage discharge pipe 3. When it is necessary to clean the filter screen 11, drive a fixed column 8 and the filter screen 11 located above to move downward relative to the prism 7 through the disassembly and assembly structure, so that the filter screen 11 is separated from the drain hole 4. Then drive the rotating shell 6, the prism 7 and the fixed column 8 to rotate 180 degrees by the driving mechanism. The filter screen 11 originally located below rotates to the upper part. Drive the fixed column 8 and the filter screen 11 located above at this time to move upward through the disassembly and assembly structure, so that the corresponding filter screen 11 is inserted into the drain hole 4, and drive the fixed column 8 and the filter screen 11 located below at this time to vibrate in the vertical direction through the disassembly and assembly structure, so that the impurities on the filter screen 11 fall off by shaking, which is convenient for cleaning the impurities on the filter screen 11, reduces the influence on the filtration efficiency, and is convenient for actual use;

[0048] The prism 7 elastically supports the fixed column 8 and the filter screen 11 through an elastic support assembly. The bottom of the stop block 15 contacts the second support column 14 located above. The positions of the second support column 14 and the fixed column 8 are limited by the stop block 15 to ensure that the filter screen 11 located above is within the drain hole 4. When it is necessary to switch the positions of the two filter screens 11, the first hydraulic telescopic rod 24 drives the first support portion 23, the sealing plate 19, the first support block 20 and the second support block 21 to move downward. The first support block 20 presses the first support column 13 located above to move downward, so that the first support column 13 passes through between the second arc plate 17 and the first arc plate 16. When the filter screen 11 located above disengages from the drain hole 4, the rotating shell 6, the prism 7 and the fixed column 8 are driven to rotate by the driving mechanism. The first support column 13 located above slides from the first support block 20 onto the first arc plate 16, and the first support column 13 located below slides from the first arc plate 16, the first baffle 25 and the second arc plate 17 onto the first support block 20 in sequence. The first hydraulic telescopic rod 24 drives the first support portion 23 and the sealing plate 19 to move upward to the initial height. The first support block 20 no longer presses the first support column 13 located above. The elastic support assembly drives the fixed column 8 and the filter screen 11 located above to move upward, so that the filter screen 11 moves into the drain hole 4. Then the first hydraulic telescopic rod 24 drives the first support portion 23 and the sealing plate 19 to move upward. The second support block 21 supports the first support column 13 located below to move upward. When the second support block 21 moves upward to the preset height, the first hydraulic telescopic rod 24 drives the sealing plate 19 and the second support block 21 to move downward again. The second support block 21 no longer supports the first support column 13. At this time, the elastic support assembly drives the fixed column 8 located below to move downward, so that the first support column 13 impacts the first arc plate 16, and the impurities on the filter screen 11 located below can be shaken off. When it is necessary to remove the filter screen 11, the driving mechanism drives the rotating shell 6 to rotate 90 degrees, so that the fixed column 8 located below drives the first support column 13 to rotate to one side of the first baffle 25. The first baffle 25 supports the first support column 13. At this time, the second hydraulic telescopic rod 34 drives the toothed plate 33 to move. The toothed plate 33 drives the first rotating shaft 31 and the first baffle 25 to rotate through the gear 32, so that the first baffle 25 no longer blocks the first support column 13. The staff drives the limit disk 30 and the second baffle 28 to move upward, so that the second baffle 28 no longer blocks the sealing cover 27. The staff drives the sealing cover 27 to rotate relative to the drain hopper 5, and the second rectangular hole 26 can be opened. Since the first baffle 25 no longer blocks and limits the first support column 13 and the fixed column 8 at this time, the staff drives the filter screen 11 and the fixed column 8 to slide relative to the prism 7, so that the prism 7 disengages from the chute 9, and the filter screen 11 can be taken out from the drain hopper 5 through the second rectangular hole 26;

[0049] The third hydraulic telescopic rod 44 drives the connecting plate 45 and the fixed shaft 43 to move. The fixed shaft 43 can drive the frustum 39 to move within the rotating shell 6. The end of the movable column 41 slides on the inclined surface of the frustum 39. The frustum 39 can then support the movable column 41 and the support plate 12 to move relative to the fixed column 8. The support plate 12 pushes the first spring 10, causing the first spring 10 to be in a compressed state, thereby changing the length of the first spring 10 and controlling the pressure exerted by the first spring 10 on the fixed column 8 and the filter screen 11. And the second spring 42 is in a stretched state. When the frustum 39 moves in the reverse horizontal direction, the second spring 42 drives the support plate 12 and the movable column 41 to move in the reverse direction, so that the end of the movable column 41 always closely adheres to the inclined surface on the frustum 39. The movable column 41 slides in the reverse direction on the inclined surface of the frustum 39. By driving the second bevel gear 38 to rotate through the first servo motor 37, the second bevel gear 38 can drive the second rotating shaft 35 and the rotating shell 6 to rotate through the first bevel gear 36. And the second rotating shaft 35 and the rotating shell 6 rotate relative to the fixed shaft 43 and the frustum 39. The movable column 41 rotates around the axis of the fixed shaft 43 and the frustum 39. The movable column 41 is stationary relative to the prism 7. The spiral conveyor box 1 is supported by the base 49. By driving the support shaft 46 and the spiral blade 47 to rotate through the second servo motor 48, the spiral blade 47 can convey the sewage mixture in the spiral conveyor box 1.

[0050] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements not only includes those elements, but also includes other elements not expressly listed, or also includes elements inherent to such process, method, article or device.

[0051] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A screw conveyor for sewage treatment, comprising a screw conveyor box (1), characterized in that: The two ends of the spiral conveying box (1) are respectively fixedly connected to a sewage inlet pipe (2) and a sewage discharge pipe (3), a spiral conveying mechanism is arranged inside the spiral conveying box (1), a drainage hole (4) is opened on the inner wall of the spiral conveying box (1), a drainage bucket (5) matched with the drainage hole (4) is fixedly connected to the bottom of the spiral conveying box (1), and the drainage bucket (5) is located on the side of the sewage discharge pipe (3) facing the sewage inlet pipe (2), a rotating shell (6) is arranged in the middle of the drainage bucket (5), and a driving mechanism for driving the rotating shell (6) to rotate is installed on the drainage bucket (5); Filter screens (11) adapted to the drainage holes (4) are respectively arranged above and below the rotating shell (6); fixed columns (8) are respectively fixedly connected to the adjacent sides of the two filter screens (11); a slide groove (9) is provided in the fixed column (8); a prism (7) is slidably arranged in the slide groove (9); the prism (7) is fixedly connected to the rotating shell (6); an elastic support assembly adapted to the fixed column (8) is installed on the prism (7); and an adjustment and disassembly structure for adjusting the position of the fixed column (8) is installed on the drainage bucket (5); The adjustment and disassembly structure comprises a first support column (13) and a second support column (14) respectively fixedly mounted on both sides of the fixed column (8); a stop block (15) matched with the second support column (14) is fixedly connected in the drainage bucket (5); and the stop block (15) is located above the two second support columns (14); a first arc plate (16) and a second arc plate (17) matched with the first support column (13) are provided in the drainage bucket (5); the first arc plate (16) is a C-shaped structure; and the second arc plate (17) is located at a notch of the first arc plate (16); the first arc plate (16) and the second arc plate (17) are respectively connected in the vertical direction and A gap is formed in the horizontal direction, and the size of the gap is compatible with the first support column (13). The first arc plate (16) and the second arc plate (17) are respectively fixedly connected to the inner wall of the drainage bucket (5) through the connecting column (18). The drainage bucket (5) is equipped with a toggle for toggling the first support column (13). A support transition unit matching the first arc plate (16) and the second arc plate (17) is provided in the drainage bucket (5). The support transition unit is located on one side of the gap in the horizontal direction. A second rectangular hole (26) is opened on one side wall of the drainage bucket (5), and an opening and closing member matching the second rectangular hole (26) is provided on the outer wall of the drainage bucket (5); The toggle device comprises a sealing plate (19) arranged in the drainage bucket (5), one side of the sealing plate (19) contacts the inner wall of the drainage bucket (5), the other side of the sealing plate (19) is respectively fixedly connected with a first support block (20) and a second support block (21), the first support block (20) is located above the second support block (21), and two first support columns (13) are located between the first support block (20) and the second support block (21), a first rectangular hole (22) is opened on the inner wall of the drainage bucket (5), a first support portion (23) is fixedly installed on the sealing plate (19), and the first support portion (23) passes through the first rectangular hole (22), a first hydraulic telescopic rod (24) is fixedly connected to the outer wall of the drainage bucket (5), and the telescopic end of the first hydraulic telescopic rod (24) is fixedly connected to the first support portion (23); The support transition unit comprises a first rotating shaft (31) rotatably mounted on the drainage bucket (5), one end of the first rotating shaft (31) being fixedly connected to a gear (32) located outside the drainage bucket (5), the other end of the first rotating shaft (31) being fixedly connected to a first baffle (25) matched with a first arc plate (16) and a second arc plate (17), and the first baffle (25) being located inside the drainage bucket (5), a second hydraulic telescopic rod (34) being fixedly connected to an outer wall of the drainage bucket (5), and a telescopic end of the second hydraulic telescopic rod (34) being fixedly connected to a toothed plate (33) meshing with the gear (32).

2. A screw conveyor for sewage treatment according to claim 1, characterized in that: The opening and closing member comprises a sealing cover (27) arranged outside the drainage bucket (5), the sealing cover (27) and the outer wall of the drainage bucket (5) are in contact, the bottom end of the sealing cover (27) is rotatably connected to the drainage bucket (5), the side of the sealing cover (27) away from the drainage bucket (5) is in contact with a second baffle (28), the outer sliding sleeve of the second baffle (28) is provided with a second support portion (29), the second support portion (29) and the outer wall of the drainage bucket (5) are fixedly connected, and the second support portion (29) is located above the sealing cover (27), and the top end of the second baffle (28) is fixedly connected to a limit plate (30) located above the second support portion (29).

3. A screw conveyor for sewage treatment according to claim 1, characterized in that: The driving mechanism comprises a second rotating shaft (35) rotatably mounted on the drainage bucket (5), one end of the second rotating shaft (35) being fixedly connected to the rotating shell (6), the other end of the second rotating shaft (35) being fixedly sleeved with a first bevel gear (36), and the first bevel gear (36) being located outside the drainage bucket (5), a first servo motor (37) being fixedly connected to the outer wall of the drainage bucket (5), and an output end of the first servo motor (37) being fixedly connected to a second bevel gear (38) meshing with the first bevel gear (36).

4. A screw conveyor for sewage treatment according to claim 3, characterized in that: The elastic support assembly comprises a support plate (12) arranged on a side of the prism (7) away from the rotating shell (6), the support plate (12) being located in the slide groove (9), a first spring (10) being arranged in the slide groove (9), and two ends of the first spring (10) respectively abutting against the inner wall of the slide groove (9) and the support plate (12), a groove (40) being provided in the prism (7), a movable column (41) penetrating in the prism (7), and the movable column (41) and the support plate (12) being fixedly connected, a second spring (42) being arranged in the groove (40) being sleeved on the outside of the movable column (41), and two ends of the second spring (42) being respectively fixedly connected to the inner wall of the groove (40) and the support plate (12), and a supporting unit for supporting the movable column (41) to move is installed in the drainage bucket (5).

5. A screw conveyor for sewage treatment according to claim 4, characterized in that: The supporting unit comprises a truncated table (39) arranged in the rotating shell (6), and one end of the movable column (41) away from the supporting plate (12) contacts the inclined surface of the truncated table (39), a fixed shaft (43) is fixedly installed on the truncated table (39), and the fixed shaft (43) passes through the second rotating shaft (35), and a third hydraulic telescopic rod (44) is fixedly connected to the outer wall of the drainage bucket (5), and the telescopic end of the third hydraulic telescopic rod (44) and the fixed shaft (43) are fixedly connected via a connecting plate (45).

6. A screw conveyor for sewage treatment according to claim 1, characterized in that: The screw conveying mechanism comprises a support shaft (46) rotatably mounted in a screw conveying box (1); a screw blade (47) located in the screw conveying box (1) is provided on an outer fixed sleeve of the support shaft (46); a second servo motor (48) is fixedly connected to an outer wall of the screw conveying box (1); an output end of the second servo motor (48) is fixedly connected to the support shaft (46); and a base (49) is fixedly connected to the bottom of the screw conveying box (1).

7. A method for spiral conveying for sewage treatment, using the spiral conveyor for sewage treatment as claimed in claim 1, characterized in that: The following steps are involved: Step 1: The sewage mixture enters the screw conveying box (1) through the sewage inlet pipe (2), and the sewage mixture in the screw conveying box (1) is conveyed by the screw conveying mechanism; Step 2: When the sewage mixture moves to the top of the drainage hole (4), the sewage mixture is filtered by the filter screen (11) located in the drainage hole (4), and the sewage passes through the filter screen (11) into the drainage bucket (5), and the remaining impurities are transported to the top of the drainage pipe (3) by the screw conveying mechanism, and the impurities are discharged through the drainage pipe (3); Step 3: When the filter (11) needs to be cleaned, the disassembly structure is adjusted to drive a fixed column (8) and the filter (11) located above to move downward relative to the prism (7), so that the filter (11) is separated from the drainage hole (4), and then the driving mechanism drives the rotating shell (6), the prism (7) and the fixed column (8) to rotate 180 degrees, so that the filter (11) originally located at the bottom rotates to the top; Step 4: by adjusting the disassembly and assembly structure, the fixed column (8) and the filter screen (11) located at the top are driven to move upward, so that the corresponding filter screen (11) is inserted into the drainage hole (4), and by adjusting the disassembly and assembly structure, the fixed column (8) and the filter screen (11) located at the bottom are driven to shake in the vertical direction, so that impurities on the filter screen (11) are shaken off.

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