Urban sewage treatment device

Abstract

The invention discloses an urban sewage treatment device, and relates to the technical field of urban sewage treatment, the urban sewage treatment device comprises a degradation pool, a gas injection pipe is arranged above the gas injection pipe, the bottom end of the gas injection pipe is fixedly connected with a rotating disc, the outer wall of the rotating disc is provided with a gas nozzle, and the urban sewage treatment device further comprises a gas injection mechanism and a feeding mechanism. By arranging the gas injection mechanism, a motor operates to drive a movable seat to slide on the outer wall of a cross rod, and the movable seat moves to drive a gas injection pipe to move; the movable seat moves to drive a straight gear to move along the outer wall of a toothed plate, so that the straight gear is driven to rotate, and the straight gear rotates to drive an air injection pipe to rotate; oxygen in the gas inlet pipe moves into the cross rod, when the gas inlet moves into the movable seat, the C-shaped block moves to cancel the shielding of the gas inlet, and the oxygen is sprayed out through the gas spraying opening, so that the gas injection pipe automatically rotates while moving back and forth in the degradation pool, and the gas spraying opening sprays oxygen into the degradation pool, so that the oxygen in the degradation pool is uniformly distributed.

Description

Technical Field

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

[0002] Generally, the main pollutants in urban sewage are easily degradable organic matter, so most urban sewage treatment plants use aerobic biological treatment.

[0003] When performing biodegradation treatment, sewage is injected into a degradation pool, and the microorganisms in the degradation pool decompose the organic matter in the sewage. When the degradation pool is used, oxygen needs to be injected into the degradation pool through an air injection pipe. At the same time, ammonia in the sewage undergoes an oxidation-reduction reaction to generate nitrates, and ferrous salts need to be added into the pool for replacement reaction. However, in the prior art, the position of the air injection pipe in the degradation pool is fixed, which easily leads to uneven oxygen distribution in the pool, affecting the activity of microorganisms. At the same time, the ferrous salts are manually added, which is labor-intensive and inefficient. In order to achieve the purpose of uniformly injecting oxygen and adding ferrous salts into the degradation pool, a municipal sewage treatment device is provided. Summary of the invention

[0004] The purpose of the present invention is to provide a municipal sewage treatment device in order to achieve the purpose of uniformly injecting oxygen and adding ferrous salt into a degradation pool.

[0005] To achieve the above object, the present invention provides the following technical solution: an urban sewage treatment device, comprising a degradation tank, an air injection pipe is arranged above the degradation tank, a rotating disk is fixedly connected to the bottom end of the air injection pipe, an air jet is installed on the outer wall of the rotating disk, the air injection pipe injects oxygen into the degradation tank through an air injection mechanism, and ferrous salt is fed into the degradation tank through a feeding mechanism; The gas injection mechanism includes a mounting plate, which is symmetrically fixedly connected to the top of the degradation tank, a cross bar is fixedly connected between the two mounting plates, the cross bar is hollow, one end of the cross bar is fixedly connected to an air inlet pipe, the outer wall of the cross bar is slidably connected to a movable seat, the gas injection pipe is rotatably connected to the movable seat, the top of the movable seat is fixedly connected to a connecting plate, a motor is installed on the outer wall of the mounting plate, the output end of the motor is connected to a first threaded rod, and the first threaded rod runs through the connecting plate.

[0006] As a further solution of the present invention: the air injection mechanism also includes a tooth plate, which is fixedly connected to an outer wall of one side of the cross bar, the interior of the movable seat is located at the outer wall of the tooth plate and is rotatably connected to a spur gear, the bottom end of the spur gear is fixedly connected to a connecting shaft, the outer wall of the connecting shaft is fixedly connected to a first synchronous wheel, the outer wall of the first synchronous wheel is connected to a synchronous belt, the inner wall of one end of the synchronous belt is connected to a second synchronous wheel, the second synchronous wheel is fixedly connected to the air injection pipe, an air inlet is provided at the bottom end of the cross bar, the interior of the cross bar is slidably connected to an extrusion block extending to the top of the cross bar, the interior of the cross bar is slidably connected to a C-shaped block extending to the top of the air inlet, and a first spring is connected between the C-shaped block and the cross bar.

[0007] As a further solution of the present invention: the feeding mechanism includes a material box, which is arranged at the bottom end of the movable seat, the top of the material box is provided with a feeding port, the bottom end of the material box is provided with a discharging port, the bottom end of the movable seat is provided with a connecting groove, the inner wall of the connecting groove is provided with a fixing groove, the top of the material box is fixedly connected with a connecting block, the inside of the connecting block is slidably connected with a fixed block extending from the connecting block, a second spring is connected between the fixed block and the connecting block, the inside of the material box is slidably connected with a push rod extending to the bottom end of the fixed block, the bottom end of the material box is rotatably connected with a rotating block, the top of the rotating block is fixedly connected with a second threaded rod, and the second threaded rod extends to the inside of the push rod.

[0008] As a further solution of the present invention: the feeding mechanism also includes a rotating cylinder, which is rotatably connected to the interior of the material box and located in the inner cavity of the discharge port, a groove is provided at the top of the rotating cylinder, one end of the rotating cylinder is fixedly connected to a first bevel gear, the interior of the material box is located at the outer wall of the first bevel gear and is rotatably connected to a second bevel gear, the top of the second bevel gear is fixedly connected to a rotating column, the top of the rotating column is provided with a docking groove, and the bottom end of the connecting shaft is fixedly connected to a docking block.

[0009] As a further solution of the present invention: a first threaded hole is formed on the outer wall of the connecting plate, and the first threaded hole matches the first threaded rod.

[0010] As a further solution of the present invention: one end of the extrusion block located outside the cross bar is triangular, the top end of the C-shaped block is provided with a first inclined surface, and the bottom end of the extrusion block is in contact with the first inclined surface.

[0011] As a further solution of the present invention: the outer wall of the tooth plate is provided with tooth grooves, the tooth grooves are meshed with the spur gears, and the outer walls of the second synchronous wheel and the first synchronous wheel are provided with patterns matching the synchronous belt.

[0012] As a further solution of the present invention: the outer wall of the connecting block is in contact with the inner wall of the connecting groove, and the outer wall of one end of the fixing block is in contact with the inner wall of the fixing groove.

[0013] As a further solution of the present invention: a second inclined surface is arranged at the top end of the push rod, the bottom end of the fixing block contacts the second inclined surface, a second threaded hole is opened at the bottom end of the push rod, and the second threaded hole matches the second threaded rod.

[0014] As a further solution of the present invention: the first bevel gear is meshed with the second bevel gear, the inner wall of the docking groove is fitted with the outer wall of the docking block, and the outer wall of the docking block is square in shape.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting up the gas injection mechanism, the operation of the motor drives the movable seat to slide on the outer wall of the cross bar, and the displacement of the movable seat drives the gas injection pipe to move; the displacement of the movable seat drives the spur gear to move along the outer wall of the toothed plate, thereby driving the spur gear to rotate, and the rotation of the spur gear drives the gas injection pipe to rotate; the oxygen in the air intake pipe moves into the cross bar, and when the air inlet moves into the movable seat, the C-shaped block moves to cancel the obstruction of the air inlet, and oxygen is ejected through the jet nozzle, so that the gas injection pipe can automatically rotate while reciprocating in the degradation tank, and the jet nozzle sprays oxygen into the degradation tank, so that the oxygen in the degradation tank is evenly distributed.

[0016] 2. By setting a feeding mechanism, when the material box is installed, the docking block is inserted into the docking groove, so that when the movable seat is displaced, the connection shaft rotates to drive the docking block to rotate, the docking block rotates to drive the rotating column to rotate, the rotating column rotates to drive the second bevel gear to rotate, the second bevel gear rotates to drive the first bevel gear to rotate, and the first bevel gear rotates to drive the rotating cylinder to rotate. When the groove rotates to the top of the rotating cylinder, the material in the material box falls into the groove, and when the groove rotates to the bottom of the rotating cylinder, the material in the groove falls into the degradation tank through the discharge port, so that the ferrous salt can be automatically and evenly fed into the degradation tank as the movable seat moves. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the installation of the cross bar of the present invention; Figure 3 It is a schematic diagram of the internal structure of the movable seat of the present invention; Figure 4 It is a structural schematic diagram of the connecting shaft of the present invention; Figure 5 It is a schematic diagram of the internal structure of the crossbar of the present invention; Figure 6 It is a schematic diagram of the installation of the material box of the present invention; Figure 7 It is a schematic diagram of the internal structure of the material box of the present invention; Figure 8 It is a schematic structural diagram of the rotating drum of the present invention.

[0018] In the figure: 1, degradation tank; 2, gas injection pipe; 3, rotating disk; 4, air jet; 5, gas injection mechanism; 501, mounting plate; 502, cross bar; 503, air inlet pipe; 504, movable seat; 505, connecting plate; 506, first threaded rod; 507, motor; 508, tooth plate; 509, spur gear; 510, connecting shaft; 511, first synchronous wheel; 512, synchronous belt; 513, second synchronous wheel; 514, air inlet; 515, extrusion block; 516, first elastic Spring; 517, C-shaped block; 6, feeding mechanism; 601, material box; 602, feeding port; 603, discharging port; 604, connecting groove; 605, fixing groove; 606, connecting block; 607, fixing block; 608, second spring; 609, push rod; 610, second threaded rod; 611, rotating block; 612, rotating cylinder; 613, groove; 614, first bevel gear; 615, second bevel gear; 616, rotating column; 617, docking groove; 618, docking block. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and "third" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", and "set" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal connection of two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances. The following is an explanation of an embodiment of the present invention based on the overall structure of the present invention.

[0021] See also Figures 1 to 8 In an embodiment of the present invention, a municipal sewage treatment device comprises a degradation tank 1, an air injection pipe 2 is arranged above the degradation tank 1, a rotating disk 3 is fixedly connected to the bottom end of the air injection pipe 2, an air jet 4 is installed on the outer wall of the rotating disk 3, the air injection pipe 2 injects oxygen into the degradation tank 1 through an air injection mechanism 5, and ferrous salt is fed into the degradation tank 1 through a feeding mechanism 6.

[0022] The gas injection mechanism 5 includes a mounting plate 501, which is symmetrically fixedly connected to the top of the degradation tank 1, a cross bar 502 is fixedly connected between the two mounting plates 501, the cross bar 502 is hollow, one end of the cross bar 502 is fixedly connected to an air inlet pipe 503, the outer wall of the cross bar 502 is slidably connected to a movable seat 504, the gas injection pipe 2 is rotatably connected to the movable seat 504, the top of the movable seat 504 is fixedly connected to a connecting plate 505, the outer wall of the mounting plate 501 is installed with a motor 507, the output end of the motor 507 is connected to a first threaded rod 506, the first threaded rod 506 runs through the connecting plate 505, the gas injection mechanism 5 also includes a tooth plate 508, the tooth plate 508 is fixedly connected to the outer wall of one side of the cross bar 502, the movable seat The inner part of 504 is rotatably connected to the outer wall of the tooth plate 508, and the bottom end of the spur gear 509 is fixedly connected to the connecting shaft 510, and the outer wall of the connecting shaft 510 is fixedly connected to the first synchronous wheel 511, and the outer wall of the first synchronous wheel 511 is connected to the synchronous belt 512, and the inner wall of one end of the synchronous belt 512 is connected to the second synchronous wheel 513, and the second synchronous wheel 513 is fixedly connected to the air injection pipe 2, and an air inlet 514 is provided at the bottom end of the cross bar 502, and the inner part of the cross bar 502 is slidably connected to the extrusion block 515 extending to the top of the cross bar 502, and the inner part of the cross bar 502 is slidably connected to the C-shaped block 517 extending to the top of the air inlet 514, and a first spring 516 is connected between the C-shaped block 517 and the cross bar 502.

[0023] In this embodiment: the operation of the motor 507 drives the first threaded rod 506 to rotate, the rotation of the first threaded rod 506 drives the connecting plate 505 to move, the displacement of the connecting plate 505 drives the movable seat 504 to slide along the outer wall of the cross bar 502, and the displacement of the movable seat 504 drives the gas injection pipe 2 to move; the displacement of the movable seat 504 drives the spur gear 509 to move along the outer wall of the toothed plate 508, thereby driving the spur gear 509 to rotate, the rotation of the spur gear 509 drives the connecting shaft 510 to rotate, the rotation of the connecting shaft 510 drives the first synchronous wheel 511 to rotate, the rotation of the first synchronous wheel 511 drives the synchronous belt 512 to rotate, the rotation of the synchronous belt 512 drives the second synchronous wheel 513 to rotate, the rotation of the second synchronous wheel 513 drives the gas injection pipe 2 to rotate, and the rotation of the gas injection pipe 2 drives the rotating disk 3 and the jet nozzle 4 to rotate.

[0024] The oxygen in the air intake pipe 503 is transported to the cross bar 502. At this time, the C-shaped block 517 blocks the air intake port 514. When the air intake port 514 moves to the movable seat 504, the extrusion block 515 contacts the movable seat 504 and is displaced. The displacement of the extrusion block 515 pushes the C-shaped block 517 to displace, causing extrusion on the first spring 516. The displacement of the C-shaped block 517 cancels the blocking of the air intake port 514. The oxygen in the cross bar 502 enters the movable seat 504 through the air intake port 514, and then enters the air injection pipe 2 and the rotating disk 3, and then is ejected through the air jet 4, so that the air injection pipe 2 can automatically rotate while reciprocating in the degradation tank 1. The air jet 4 sprays oxygen into the degradation tank 1, so that the oxygen in the degradation tank 1 is evenly distributed. It is worth noting that one end of the air intake pipe 503 is connected to the oxygen storage device.

[0025] Please refer to Figures 6 to 8 The feeding mechanism 6 includes a material box 601, which is arranged at the bottom end of the movable seat 504. A feeding port 602 is provided at the top of the material box 601, and a discharging port 603 is provided at the bottom end of the material box 601. A connecting groove 604 is provided at the bottom end of the movable seat 504, and a fixing groove 605 is provided on the inner wall of the connecting groove 604. A connecting block 606 is fixedly connected to the top of the material box 601, and a fixing block 607 extending from the connecting block 606 is slidably connected inside the connecting block 606, and a second spring 608 is connected between the fixing block 607 and the connecting block 606. A push rod 609 extending to the bottom end of the fixing block 607 is slidably connected inside the material box 601, and the bottom end of the material box 601 is rotatably connected to the rotating block 606. 11. The top of the rotating block 611 is fixedly connected with the second threaded rod 610, and the second threaded rod 610 extends to the inside of the push rod 609. The feeding mechanism 6 also includes a rotating cylinder 612, which is rotatably connected to the inside of the material box 601 and is located in the inner cavity of the discharge port 603. A groove 613 is provided at the top of the rotating cylinder 612, and one end of the rotating cylinder 612 is fixedly connected with the first bevel gear 614. The inside of the material box 601 is located at the outer wall of the first bevel gear 614 and is rotatably connected with the second bevel gear 615. The top of the second bevel gear 615 is fixedly connected with a rotating column 616, and the top of the rotating column 616 is provided with a docking groove 617. The bottom end of the connecting shaft 510 is fixedly connected with a docking block 618.

[0026] In this embodiment: ferrous salt is placed into the material box 601 through the feed port 602. When the material box 601 is installed, the connecting block 606 is inserted into the connecting groove 604. At this time, the fixed block 607 is engaged into the fixed groove 605 by the elastic force of the second spring 608, and the material box 601 is fixedly installed; when the material box 601 is dismantled, the rotating block 611 is rotated, and the rotation of the rotating block 611 drives the second threaded rod 610 to rotate, and the rotation of the second threaded rod 610 drives the push rod 609 to move, and the push rod 609 moves to push the fixed block 607 to move, and the fixed block 607 moves out of the fixed groove 605, and the material box 601 is no longer fixed.

[0027] When the material box 601 is installed, the docking block 618 is inserted into the docking groove 617, so that when the movable seat 504 is displaced, the connecting shaft 510 rotates to drive the docking block 618 to rotate, the docking block 618 rotates to drive the rotating column 616 to rotate, the rotating column 616 rotates to drive the second bevel gear 615 to rotate, the second bevel gear 615 rotates to drive the first bevel gear 614 to rotate, the first bevel gear 614 rotates to drive the rotating cylinder 612 to rotate, when the groove 613 rotates to the top of the rotating cylinder 612, the material in the material box 601 falls into the groove 613, when the groove 613 rotates to the bottom of the rotating cylinder 612, the material in the groove 613 falls into the degradation tank 1 through the discharge port 603, so that as the movable seat 504 moves, the ferrous salt is automatically and evenly put into the degradation tank 1.

[0028] Please refer to Figure 1 to Figure 2 A first threaded hole is formed on the outer wall of the connecting plate 505 , and the first threaded hole matches the first threaded rod 506 .

[0029] In this embodiment, the operation of the motor 507 drives the first threaded rod 506 to rotate, the rotation of the first threaded rod 506 drives the connecting plate 505 to move, and the displacement of the connecting plate 505 drives the movable seat 504 to slide on the outer wall of the crossbar 502.

[0030] Please refer to 5 in particular. The end of the extrusion block 515 located outside the crossbar 502 is triangular in shape. The top of the C-shaped block 517 is provided with a first inclined surface, and the bottom end of the extrusion block 515 is in contact with the first inclined surface.

[0031] In this embodiment: when the air inlet 514 moves into the movable seat 504, the extrusion block 515 contacts the movable seat 504 and is displaced by force. The displacement of the extrusion block 515 pushes the C-shaped block 517 to displace, causing the first spring 516 to be squeezed. The displacement of the C-shaped block 517 cancels the obstruction of the air inlet 514, and the oxygen in the cross bar 502 enters the movable seat 504 through the air inlet 514.

[0032] Please refer to Figure 3 to Figure 4The outer wall of the tooth plate 508 is provided with tooth grooves, which mesh with the spur gear 509 , and the outer walls of the second synchronous wheel 513 and the first synchronous wheel 511 are provided with patterns matching the synchronous belt 512 .

[0033] In this embodiment: the displacement of the movable seat 504 drives the spur gear 509 to move along the outer wall of the toothed plate 508, thereby driving the spur gear 509 to rotate, the rotation of the spur gear 509 drives the connecting shaft 510 to rotate, the rotation of the connecting shaft 510 drives the first synchronous wheel 511 to rotate, the rotation of the first synchronous wheel 511 drives the synchronous belt 512 to rotate, the rotation of the synchronous belt 512 drives the second synchronous wheel 513 to rotate, and the rotation of the second synchronous wheel 513 drives the gas injection pipe 2 to rotate.

[0034] Please refer to Figure 6 to Figure 7 The outer wall of the connecting block 606 fits with the inner wall of the connecting groove 604 , and the outer wall of one end of the fixing block 607 fits with the inner wall of the fixing groove 605 .

[0035] In this embodiment, the connecting block 606 is inserted into the connecting groove 604 , and the fixing block 607 is engaged into the fixing groove 605 by the elastic force of the second spring 608 , so that the material box 601 is fixedly installed.

[0036] Please refer to Figure 6 to Figure 7 A second inclined surface is provided at the top of the push rod 609 , and the bottom end of the fixing block 607 contacts the second inclined surface. A second threaded hole is provided at the bottom end of the push rod 609 , and the second threaded hole matches the second threaded rod 610 .

[0037] In this embodiment: the rotating block 611 is rotated, the rotating block 611 drives the second threaded rod 610 to rotate, the second threaded rod 610 drives the push rod 609 to move, the push rod 609 moves and pushes the fixed block 607 to move, the fixed block 607 moves out of the fixed groove 605, and the fixation of the material box 601 is cancelled.

[0038] Please refer to Figures 6 to 8 The first bevel gear 614 is meshed with the second bevel gear 615, the inner wall of the docking groove 617 is fitted with the outer wall of the docking block 618, and the outer wall of the docking block 618 is square in shape.

[0039] In this embodiment: the connection shaft 510 rotates to drive the docking block 618 to rotate, the docking block 618 rotates to drive the rotating column 616 to rotate, the rotating column 616 rotates to drive the second bevel gear 615 to rotate, the second bevel gear 615 rotates to drive the first bevel gear 614 to rotate, and the first bevel gear 614 rotates to drive the rotating cylinder 612 to rotate.

[0040] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical scheme and inventive concept of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An urban sewage treatment device, comprising a degradation tank (1), wherein an air injection pipe (2) is arranged above the degradation tank (1), a rotating disk (3) is fixedly connected to the bottom end of the air injection pipe (2), and an air jet (4) is installed on the outer wall of the rotating disk (3), characterized in that: The gas injection pipe (2) injects oxygen into the degradation tank (1) through a gas injection mechanism (5), and ferrous salt is fed into the degradation tank (1) through a feeding mechanism (6); The gas injection mechanism (5) comprises a mounting plate (501), the mounting plate (501) is symmetrically fixedly connected to the top of the degradation tank (1), a cross bar (502) is fixedly connected between the two mounting plates (501), the cross bar (502) is hollow, one end of the cross bar (502) is fixedly connected to an air inlet pipe (503), the outer wall of the cross bar (502) is slidably connected to a movable seat (504), the gas injection pipe (2) is rotatably connected to the movable seat (504), the top of the movable seat (504) is fixedly connected to a connecting plate (505), the outer wall of the mounting plate (501) is mounted with a motor (507), the output end of the motor (507) is connected to a first threaded rod (506), and the first threaded rod (506) passes through the connecting plate (505).

2. The urban sewage treatment device according to claim 1, characterized in that: The gas injection mechanism (5) further comprises a toothed plate (508), wherein the toothed plate (508) is fixedly connected to an outer wall of one side of the crossbar (502), and an inner portion of the movable seat (504) is rotatably connected to an outer wall of the toothed plate (508), a spur gear (509) is fixedly connected to a connecting shaft (510) at the bottom end of the spur gear (509), a first synchronous wheel (511) is fixedly connected to an outer wall of the connecting shaft (510), a synchronous belt (512) is connected to an outer wall of the first synchronous wheel (511), and a synchronous belt (512) is connected to the outer wall of the synchronous belt (512). A second synchronous wheel (513) is connected to the inner wall of one end, and the second synchronous wheel (513) is fixedly connected to the gas injection pipe (2). An air inlet (514) is provided at the bottom end of the cross bar (502). An extrusion block (515) extending to the top of the cross bar (502) is slidably connected inside the cross bar (502). A C-shaped block (517) extending to the top of the air inlet (514) is slidably connected inside the cross bar (502), and a first spring (516) is connected between the C-shaped block (517) and the cross bar (502).

3. The urban sewage treatment device according to claim 2, characterized in that: The feeding mechanism (6) comprises a material box (601), the material box (601) is arranged at the bottom end of the movable seat (504), a material inlet (602) is provided at the top end of the material box (601), a material outlet (603) is provided at the bottom end of the material box (601), a connecting groove (604) is provided at the bottom end of the movable seat (504), a fixing groove (605) is provided on the inner wall of the connecting groove (604), a connecting block (606) is fixedly connected to the top end of the material box (601), and the inner wall of the connecting block (606) is provided with a sliding groove (605). A fixed block (607) extending from the connecting block (606) is connected, a second spring (608) is connected between the fixed block (607) and the connecting block (606), a push rod (609) extending to the bottom end of the fixed block (607) is slidably connected inside the material box (601), a rotating block (611) is rotatably connected to the bottom end of the material box (601), a second threaded rod (610) is fixedly connected to the top end of the rotating block (611), and the second threaded rod (610) extends to the inside of the push rod (609).

4. The urban sewage treatment device according to claim 3, characterized in that: The feeding mechanism (6) further comprises a rotating cylinder (612), the rotating cylinder (612) being rotatably connected to the interior of the material box (601) and being located in the inner cavity of the material outlet (603), a groove (613) being provided at the top end of the rotating cylinder (612), a first bevel gear (614) being fixedly connected to one end of the rotating cylinder (612), a second bevel gear (615) being rotatably connected to the outer wall of the first bevel gear (614) located inside the material box (601), a rotating column (616) being fixedly connected to the top end of the second bevel gear (615), a docking groove (617) being provided at the top end of the rotating column (616), and a docking block (618) being fixedly connected to the bottom end of the connecting shaft (510).

5. The urban sewage treatment device according to claim 2, characterized in that: The outer wall of the connecting plate (505) is provided with a first threaded hole, and the first threaded hole matches the first threaded rod (506).

6. The urban sewage treatment device according to claim 2, characterized in that: One end of the extrusion block (515) located outside the crossbar (502) is triangular in shape, a first inclined surface is provided at the top end of the C-shaped block (517), and a bottom end of the extrusion block (515) is in contact with the first inclined surface.

7. The urban sewage treatment device according to claim 2, characterized in that: The outer wall of the tooth plate (508) is provided with tooth grooves, the tooth grooves meshing with the spur gear (509), and the outer walls of the second synchronous wheel (513) and the first synchronous wheel (511) are provided with patterns matching the synchronous belt (512).

8. The urban sewage treatment device according to claim 4, characterized in that: The outer wall of the connecting block (606) fits with the inner wall of the connecting groove (604), and the outer wall of one end of the fixing block (607) fits with the inner wall of the fixing groove (605).

9. The urban sewage treatment device according to claim 4, characterized in that: The top end of the push rod (609) is provided with a second inclined surface, the bottom end of the fixing block (607) is in contact with the second inclined surface, and the bottom end of the push rod (609) is provided with a second threaded hole, which matches the second threaded rod (610).

10. The urban sewage treatment device according to claim 4, characterized in that: The first bevel gear (614) is meshed with the second bevel gear (615), the inner wall of the docking groove (617) is in contact with the outer wall of the docking block (618), and the outer wall of the docking block (618) is square in shape.

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