A sewage treatment device for municipal engineering

Abstract

The utility model discloses a kind of sewage treatment devices for municipal engineering, relate to municipal engineering technical field, the sewage treatment devices for municipal engineering, the outer wall of the water storage tank is hinged with sealing door, the outer wall of the water storage tank is fixed with water inlet pipe;The sewage treatment devices for municipal engineering, by setting fixed plate, rotating rod, impeller, mounting seat, rotating gear, driving rack, return spring, L type rod, pull rod and baffle, when sewage comes in, pull rod moves with baffle and opens the opening of feed plate, so that sewage and flocculating agent are simultaneously fed, prevent flocculating agent from being poured in at one place of sewage once, cause flocculating agent to be difficult to spread;Meanwhile, by setting square tube, pivot, fender and spring plate, after water flow comes in, fender cooperates spring plate and slows down water inflow velocity, solve the problem that flocculating agent falls insufficiently and cannot be fully contacted with sewage due to water flow velocity being too fast.

Description

Technical Field

[0001] This invention relates to the field of municipal engineering wastewater treatment technology, specifically to a wastewater treatment device for municipal engineering. Background Technology

[0002] In municipal wastewater treatment, flocculation sedimentation is a crucial and widely used physicochemical treatment unit. Its core is to add flocculants to wastewater to destabilize and aggregate suspended particles, colloidal pollutants, and insoluble compounds that are difficult to settle naturally, forming larger flocs (lumps). This allows for solid-liquid separation through sedimentation, effectively removing turbidity, color, total phosphorus, and some organic matter from the water.

[0003] In current municipal wastewater treatment devices, flocculants are generally added in a single, centralized manner. This results in the flocculant being concentrated in one location within the wastewater when it comes into contact with the wastewater, preventing it from spreading rapidly and reducing the efficiency of wastewater treatment. Therefore, a wastewater treatment device for municipal engineering is proposed. Summary of the Invention

[0004] To address the shortcomings of existing technologies, this invention provides a sewage treatment device for municipal engineering, which solves the problems mentioned in the background section.

[0005] To achieve the above objectives, the present invention provides the following technical solution: a sewage treatment device for municipal engineering, comprising a water storage tank, a sealing door hinged to the outer wall of the water storage tank, an inlet pipe fixed to the outer wall of the water storage tank, a filter plate fixed inside the inlet pipe, an outlet pipe fixed to the outer wall of the water storage tank, a valve fixed to the outer wall of the outlet pipe, a feed hood fixed to the top of the water storage tank, a feed plate fixed to the bottom of the feed hood, the feed plate providing a feeding channel for chemicals, and a fixing plate fixed to the inner wall of the water storage tank, the fixing plate providing installation support for internal components; The rotating rod rotates at the bottom of the fixed plate and serves as a power transmission component. An impeller is fixed to the outer wall of the rotating rod. The impeller can be driven to rotate by the impact of the incoming water flow, thus transmitting its power. The mounting base is fixed to the inner wall of the water storage tank, providing a sealed installation environment to prevent sewage from entering. A rotating rod passes through the mounting base, rotatably connecting at the point of penetration. A rotating gear is fixed to the outer wall of the rotating rod, located inside the mounting base, and rotates synchronously with the rotating rod to transmit power. A drive rack slides on the inner wall of the mounting base, meshing with the rotating gear. The drive rack converts the rotational power of the rotating gear into its own horizontal movement. A return spring is fixed to the outer wall of the drive rack. The end of the device is fixed to the inner wall of the mounting base. The return spring is used to drive the drive rack to return to its original position after the water inlet stops. The end of the drive rack passes through the mounting base and is slidably connected at the point of penetration. An L-shaped rod is fixed to the top of the drive rack. The L-shaped rod is used to transmit the power of the rack and drive the subsequent components to move. A pull rod is fixed to the end of the L-shaped rod. The pull rod is used to drive the baffle plate to move synchronously. A baffle plate is fixed to the outer wall of the pull rod. The baffle plate can block the opening of the feed plate of the feed hood. The baffle plate slides on the inner wall of the feed plate and is used to control the start and stop of the agent feeding. A square tube is fixed to the outlet end of the inlet pipe to provide installation space for internal components. The inner wall of the square tube has a rotating shaft that provides rotational support for a baffle plate. A baffle plate is fixed to the outer wall of the rotating shaft. The baffle plate can be rotated by the impact of water flow to slow down the water flow rate. A spring plate is fixed to the inner wall of the square tube. The spring plate can contact the baffle plate to provide elastic support for the baffle plate and limit the rotation of the baffle plate.

[0006] According to the above technical solution, the mounting base can house the rotating gear, drive rack, and return spring, preventing them from being touched by sewage.

[0007] According to the above technical solution, the baffle plate and spring plate can slow down the flow rate of sewage entering from the inlet pipe.

[0008] According to the above technical solution, the inner wall of the water storage tank is provided with a scattering device to prevent the flocculant from falling too concentratedly. The inner wall of the water storage tank is also provided with a moisture-proof device to reduce the moisture of the feed plate and prevent the feed plate opening from being blocked.

[0009] According to the above technical solution, the dispersing device includes: a centrifugal disc, which is fixed to the outer wall of the rotating rod and rotates synchronously with the rotating rod to disperse the medicine through centrifugal force; A baffle plate is fixed to the top of the square tube. The baffle plate is used to contain the centrifuged agent and prevent it from splashing. The baffle plate has a discharge port on the outer wall facing the middle of the water tank, which can discharge the centrifuged agent outward in a directional manner. The scraper is fixed to the top of the centrifuge disc and can rotate synchronously with the centrifuge disc. The scraper is in contact with the inner wall of the barrier plate and is used to scrape off the drug residue adhering to the inner wall of the barrier plate to avoid waste.

[0010] According to the above technical solution, the top of the centrifugal disc is fixed with a crushing spike. The crushing spike is arranged in a circumferential array and located below the opening of the feed plate. The crushing spike is used to catch the falling flocculant and to break up the clumps of flocculant.

[0011] According to the above technical solution, the moisture-proof device includes: an eccentric wheel, which is fixed on the outer wall of the rotating rod and rotates synchronously with the rotating rod to provide extrusion power; A heat-conducting plate is fixed to the top of a fixed plate and is used to conduct heat generated by friction. An inclined block slides on the outer wall of the heat-conducting plate. The inclined surface of the inclined block can be squeezed by the convex surface of an eccentric wheel. The inclined block generates heat through friction when it is squeezed and moved. A copper sheet is fixed to the bottom of the feed plate. The bottom of the copper sheet contacts the top of the heat-conducting plate, and the copper sheet is used to conduct heat to the feed plate area.

[0012] According to the above technical solution, a placement seat is fixed on the outer wall of the heat-conducting plate, a sliding block is slidably mounted on the inner wall of the placement seat, a clamping spring is fixed on the outer wall of the sliding block, and the end of the clamping spring is fixed on the outer wall of the inclined top block. The clamping spring is used to provide a continuous clamping force to ensure that the inclined top block is always in contact with the heat-conducting plate.

[0013] According to the above technical solution, the present invention provides a sewage treatment device for municipal engineering. It has the following beneficial effects: 1. This invention, by setting up a fixed plate, rotating rod, impeller, mounting base, rotating gear, drive rack, return spring, L-shaped rod, pull rod, and baffle plate, allows the impeller to rotate when sewage enters, and the pull rod moves the baffle plate to open the opening of the feed plate, so that sewage and flocculant can be fed at the same time, preventing the flocculant from being poured into one place in the sewage at once, which would make it difficult for the flocculant to diffuse. At the same time, by setting up a square pipe, rotating shaft, baffle plate, and spring plate, the baffle plate and spring plate slow down the water flow after the water flows in, solving the problem that the flocculant cannot fall enough and cannot fully contact the sewage due to the water flow being too fast.

[0014] 2. This invention, by setting up a centrifugal disc, baffle plate, discharge port and scraper, and the rotating rod drives the centrifugal disc to rotate synchronously, the centrifugal force of the centrifugal disc throws the medicine outward from the discharge port, so that the medicine spreads further and is distributed more evenly, solving the problem that the medicine is difficult to dissolve when it falls directly into one place in the sewage when it is discharged from the discharge port.

[0015] 3. By incorporating crushing spikes, this invention can impact and break up the flocculant that falls into the centrifuge disc, causing it to scatter and further preventing the damp and clumped flocculant from becoming difficult to dissolve after entering the wastewater.

[0016] 4. This invention, by setting up an eccentric wheel, a heat-conducting plate, an inclined top block, and a copper sheet, uses a rotating rod to drive the eccentric wheel to rotate. The periodic squeezing of the inclined top block generates heat through reciprocating sliding friction. The heat is conducted to the copper sheet through the heat-conducting plate, and the copper sheet conducts heat and dehumidifies the discharge plate, thus solving the problem that the discharge plate is prone to sticking when damp, which blocks the opening and prevents the flocculant from falling.

[0017] 5. This invention solves the problem of long-term wear of the friction surface under the heat-conducting plate due to long-term friction between the inclined top block and the heat-conducting plate, which prevents the heat-conducting plate from contacting the inclined top block for heating. The inclined top block continuously pushes the inclined top block to fit tightly against the heat-conducting plate during movement. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a schematic diagram of the internal structure of the present invention; Figure 3 This is a schematic diagram of the internal top structure of the present invention; Figure 4 This is a partial structural diagram of the present invention; Figure 5 This is a schematic diagram of a partially disassembled structure of the present invention; Figure 6 This is a schematic diagram of the internal structure of the square tube of the present invention; Figure 7 This is a partial structural diagram of the present invention.

[0019] In the diagram: 1. Water storage tank; 2. Sealing door; 3. Inlet pipe; 4. Outlet pipe; 5. Feed hood; 6. Fixing plate; 7. Rotating rod; 8. Impeller; 9. Mounting base; 10. Rotating gear; 11. Drive rack; 12. Return spring; 13. L-shaped rod; 14. Pull rod; 15. Baffle plate; 16. Square tube; 17. Rotating shaft; 18. Water baffle plate; 19. Spring plate; 301. Centrifugal disc; 302. Baffle plate; 303. Discharge port; 304. Scraper; 305. Crushing spike; 401. Eccentric wheel; 402. Heat-conducting plate; 403. Inclined top block; 404. Copper sheet; 405. Placement base; 406. Sliding block; 407. Tightening spring. Detailed Implementation

[0020] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0021] Please see Figures 1-7 One embodiment of the present invention is as follows: a sewage treatment device for municipal engineering includes a water storage tank 1, a sealing door 2 hinged to the outer wall of the water storage tank 1, an inlet pipe 3 fixed to the outer wall of the water storage tank 1, a filter plate fixed inside the inlet pipe 3, an outlet pipe 4 fixed to the outer wall of the water storage tank 1, a valve fixed to the outer wall of the outlet pipe 4, a feed hood 5 fixed to the top of the water storage tank 1, a feed plate fixed to the bottom of the feed hood 5, the feed plate provides a feeding channel for the reagent and is made of metal, a fixing plate 6 fixed to the inner wall of the water storage tank 1 to provide mounting support for internal moving parts, a rotating rod 7 rotating at the bottom of the fixing plate 6 to serve as a power transmission component, transmitting power to drive the movement of subsequent components, an impeller 8 fixed to the outer wall of the rotating rod 7, and multiple sets of blades on the outer wall of the impeller 8, which can impact the blades and drive the impeller 8 to rotate when the water flow through the inlet pipe 3 passes through. The mounting base 9 is fixed to the inner wall of the water storage tank 1, forming a closed cavity that isolates its interior from sewage, preventing sewage from causing jamming of its internal components. A rotating rod 7 passes through the mounting base 9, with a rotatable connection at the penetration point. A rotating gear 10 is fixed to the outer wall of the rotating rod 7, located inside the mounting base 9. The rotating gear 10 rotates synchronously with the rotating rod 7 to transmit power. A drive rack 11 slides along the inner wall of the mounting base 9, meshing with the rotating gear 10. When the rotating gear 10 rotates, it drives the drive rack 11 to slide horizontally. A return spring 12 is fixed to the outer wall of the drive rack 11, with its end fixed to the inner wall of the mounting base 9. After the water flow disappears, the return spring 12 pulls the drive rack 11 back to its initial position. The end of the drive rack 11 passes through the mounting base 9, with a slidable connection at the penetration point. An L-shaped rod 13 is fixed to the top of the drive rack 11, moving horizontally synchronously with the drive rack 11 to transmit power. A pull rod 14 is fixed to the end of the feed plate 3. The pull rod 14 is used to drive the baffle plate 15 to move synchronously. The baffle plate 15 is fixed to the outer wall of the pull rod 14. The baffle plate 15 slides on the inner wall of the feed plate and can cover the feed opening of the feed plate to achieve sealing. The square tube 16 is fixed to the outlet end of the water inlet pipe 3 and is connected to the water inlet pipe 3. Sewage must pass through the square tube 16 before flowing into the water storage tank 1, and it also provides installation space for internal components. The inner wall of the square tube 16 has a rotating shaft 17, which is a baffle plate. 18 provides rotational support. A baffle plate 18 is fixed to the outer wall of the rotating shaft 17. Multiple sets of baffle plates 18 are provided inside the square tube 16. The last set of baffle plates 18 can precisely guide the water flow to the impeller 8. The baffle plate 18 can rotate around the rotating shaft 17 to change the water inflow when sewage comes in. A spring plate 19 is fixed to the inner wall of the square tube 16. The spring plate 19 can contact the baffle plate 18. When the water flow impacts the baffle plate 18 and it rotates, the spring plate 19 provides elasticity to limit the rotation range of the baffle plate 18.

[0022] Mounting base 9 can house rotating gear 10, drive rack 11 and return spring 12 to prevent them from being touched by sewage. Water baffle 18 and spring plate 19 can slow down the flow rate of sewage coming from inlet pipe 3.

[0023] By setting up a fixed plate 6, a rotating rod 7, an impeller 8, a mounting base 9, a rotating gear 10, a drive rack 11, a return spring 12, an L-shaped rod 13, a pull rod 14, and a baffle plate 15, when sewage enters, it drives the impeller 8 to rotate. The pull rod 14 moves the baffle plate 15 to open the opening of the feed plate, allowing sewage and flocculant to be fed in simultaneously. This prevents the flocculant from being poured into one place in the sewage at once, which would make it difficult for the flocculant to diffuse. At the same time, by setting up a square pipe 16, a rotating shaft 17, a baffle plate 18, and a spring plate 19, the baffle plate 18 works with the spring plate 19 to slow down the water flow rate after the water flows in, solving the problem that the flocculant cannot fall enough and cannot fully contact the sewage due to the excessive water flow rate.

[0024] In this embodiment, when the device needs to treat wastewater, the flocculant is first poured into the feed hood 5, and then the inlet pipe 3 is opened. Wastewater flows into the storage tank 1 through the inlet pipe 3. Large particles of debris are intercepted by the filter plate and then flow into the square pipe 16. The wastewater impacts the baffle plate 18 under the action of the water flow. The baffle plate 18 rotates the rotating shaft 17. The baffle plate 18 presses the spring plate 19, and the spring plate 19 provides continuous elastic force to slow down the speed of the wastewater and prevent the wastewater from flowing into the storage tank 1 quickly. At the same time, the slowed water flow impacts the impeller 8 after passing the baffle plate 18. The impeller 8 is driven by the water flow to rotate the rod 7. Rotation: When the rotating rod 7 rotates, it drives the rotating gear 10 to rotate synchronously. When the rotating gear 10 rotates, it drives the drive rack 11 to slide outward from the mounting base 9 through its tooth blocks. At the same time, it stretches the return spring 12. As the drive rack 11 moves outward, it drives the L-shaped rod 13 to move in the same direction. The L-shaped rod 13 drives the pull rod 14 to move. The pull rod 14 pulls the baffle plate 15 to slide synchronously. The baffle plate 15 leaves the opening of the feed plate. The flocculant in the feed hood 5 falls downward along the opening. At the same time, the tooth surface of the drive rack 11 is stuck on the inner wall of the mounting base 9, restricting its position and preventing unrestricted movement.

[0025] When the wastewater that needs to be settled flows into the water storage tank 1, the water flow disappears, the rotating rod 7 stops rotating, and when the rotating rod 7 no longer rotates with the rotating gear 10, the drive rack 11 is no longer engaged, the reset spring 12 pulls the drive rack 11 to slide into the mounting base 9, the drive rack 11 synchronously resets with the L-shaped rod 13 and the pull rod 14, and the pull rod 14 slides with the baffle plate 15 to re-seal the opening of the feed plate, stopping the feeding of flocculant.

[0026] After the flocculant enters the water storage tank 1, it carries the sewage inside the water storage tank 1 to settle. After the sludge inside the sewage has settled, the valve is opened, and the settled sewage is discharged out through the outlet pipe 4. After the sewage inside the water storage tank 1 has been discharged, the sealing door 2 is opened to scrape and clean the sludge inside the water storage tank 1. After cleaning, the sealing door 2 is closed, and the device can proceed to the next round of operation.

[0027] Please see Figures 1-7 Based on the above embodiments, in another embodiment of the present invention, the inner wall of the water storage tank 1 is provided with a dispersing device, which is used to prevent the flocculant from falling too concentratedly: The dispersion device includes a centrifugal disc 301, a baffle plate 302, a discharge port 303, and a scraper 304. The centrifugal disc 301 is fixed to the outer wall of the rotating rod 7 and below the opening of the feed plate. It can rotate synchronously with the rotating rod 7 and disperse the medicine through centrifugal force. The baffle plate 302 is fixed to the top of the square tube 16 and has a ring design to prevent the medicine thrown out by centrifugation from splashing everywhere. The baffle plate 302 has a discharge port 303 on the outer wall facing the middle of the water storage tank 1, which can discharge the medicine thrown out by centrifugation outward along the discharge port 303 and fall into the sewage. The scraper 304 is fixed to the top of the centrifugal disc 301 and rotates synchronously with the centrifugal disc 301. The scraper 304 is used to scrape off the medicine residue adhering to the inner wall of the baffle plate to avoid waste.

[0028] By setting up a centrifugal disc 301, a baffle pipe 302, a discharge port 303, and a scraper 304, the rotating rod 7 drives the centrifugal disc 301 to rotate synchronously. Centrifugal force is used to throw the agent out from the discharge port 303. At the same time, the scraper 304 rotates with the centrifugal disc 301 to scrape off the residual material on the inner wall of the baffle pipe, which solves the problem of concentrated falling point and small diffusion range of flocculant.

[0029] The top of the centrifugal disc 301 is fixed with a crushing spike 305. The crushing spikes 305 are arranged in a circumferential array and are located below the opening of the feed plate. The falling agent can fall onto the crushing spikes 305. By setting the crushing spikes 305, the clumped flocculant is impacted and broken by the rotating crushing spikes 305, causing it to scatter. This solves the problem that the damp and clumped flocculant is difficult to dissolve after entering the sewage.

[0030] The inner wall of the water storage tank 1 is also equipped with a moisture-proof device, which is used to reduce the moisture in the feed plate and prevent the feed plate opening from being blocked. The moisture-proof device includes an eccentric wheel 401, a heat-conducting plate 402, an inclined top block 403, and a copper sheet 404. The eccentric wheel 401 is fixed to the outer wall of the rotating rod 7 and rotates synchronously with the rotating rod 7. Its convex surface can press the subsequent components of the device to transmit power. The heat-conducting plate 402 is fixed to the top of the fixed plate 6 and is used to conduct heat generated by friction. An inclined top block 403 slides horizontally on the outer wall of the heat-conducting plate 402. The inclined surface of the inclined top block 403 faces the eccentric wheel 401 and can be pressed by the convex surface of the eccentric wheel 401. It slides back and forth along the heat-conducting plate 402, generating heat through friction. The copper sheet 404 is fixed to the bottom of the feed plate. The bottom of the copper sheet 404 is in contact with the top of the heat-conducting plate 402. The copper sheet 404 can conduct the heat of the heat-conducting plate 402 to the feed plate.

[0031] By setting up an eccentric wheel 401, a heat-conducting plate 402, an inclined top block 403, and a copper sheet 404, the rotating rod 7 drives the eccentric wheel 401 to rotate. The periodic squeezing of the inclined top block 403 generates heat through reciprocating sliding friction. The heat is conducted to the copper sheet 404 through the heat-conducting plate 402. The copper sheet 404 conducts heat and dehumidifies the discharge plate, solving the problem that the discharge plate is prone to sticking when damp, blocking the opening and preventing the flocculant from falling.

[0032] A mounting base 405 is fixed to the outer wall of the heat-conducting plate 402. The mounting base 405 provides mounting support for internal components. A sliding block 406 slides on the inner wall of the mounting base 405. The sliding block 406 can slide horizontally along the inner wall of the mounting base 405 without being jammed by the clamping spring 407. A clamping spring 407 is fixed to the outer wall of the sliding block 406. The end of the clamping spring 407 is fixed to the outer wall of the inclined push block 403. The clamping spring 407 can continuously provide thrust so that the inclined surface of the inclined push block 403 always adheres to the heat-conducting plate 402, preventing the heat generated by friction from being lost.

[0033] By setting up a placement seat 405, a sliding block 406, and a clamping spring 407, the clamping spring 407 continuously pushes the inclined top block 403 to tightly adhere to the heat-conducting plate 402, so that it continues to adhere to the heat-conducting plate 402 during the movement, thus solving the problem of reduced efficiency of heat generation due to long-term wear of the friction surface under long-term friction.

[0034] In this embodiment, when the impeller 8 rotates with the rotating rod 7, the rotating rod 7 rotates synchronously with the centrifugal disc 301. At the same time, after the baffle plate 15 leaves the opening from the feed plate, the flocculant falls onto the centrifugal disc 301. The clumps of flocculant first touch the crushing spikes 305 and are crushed by the high-speed rotating crushing spikes 305 on the centrifugal disc 301, forming fine particles that are easy to dissolve. At the same time, the falling flocculant rotates synchronously with the centrifugal disc 301 and is thrown outward under the action of centrifugal force, and is thrown outward along the discharge port 303 of the baffle plate 302, scattering into the sewage in the water storage tank 1. At the same time, the scraper 304 rotates synchronously with the centrifugal disc 301 to scrape off the residual flocculant on the inner wall of the baffle plate 302 to prevent waste.

[0035] When the rotating rod 7 rotates, the rotating rod 7 drives the eccentric wheel 401 to rotate synchronously. The convex surface of the eccentric wheel 401 presses against the inclined surface of the inclined push block 403, causing the inclined push block 403 to rise along the heat-conducting plate 402. The inclined push block 403 moves synchronously with the sliding block 406 through the clamping spring 407. The clamping spring 407 always presses against the inclined push block 403 to keep it pressed, generating friction. After the convex surface of the eccentric wheel 401 moves away, the inclined push block 403 moves downward. The inclined push block 403 moves synchronously with the sliding block 406 through the clamping spring 407. When the convex surface of the eccentric wheel 401 presses again, it rises again. This cycle repeats, generating heat through friction. The heat is conducted to the copper sheet 404 through the heat-conducting plate 402. The copper sheet 404 diffuses the heat to the feed plate, heating the feed plate, dissipating the moisture in the area, and preventing the medicine from getting damp and sticking to the opening, thus blocking the opening of the discharge plate.

[0036] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A sewage treatment device for municipal engineering, characterized in that, The system includes a water storage tank (1), a sealing door (2) hinged to the outer wall of the water storage tank (1), an inlet pipe (3) fixed to the outer wall of the water storage tank (1), a filter plate fixed inside the inlet pipe (3), an outlet pipe (4) fixed to the outer wall of the water storage tank (1), a valve fixed to the outer wall of the outlet pipe (4), a feed hood (5) fixed to the top of the water storage tank (1), a feed plate fixed to the bottom of the feed hood (5), and a fixing plate (6) fixed to the inner wall of the water storage tank (1). Rotating rod (7), the rotation of the rotating rod (7) is at the bottom of the fixed plate (6), and an impeller (8) is fixed on the outer wall of the rotating rod (7). Mounting base (9), which is fixed to the inner wall of water storage tank (1), the rotating rod (7) passes through the mounting base (9) and is rotatably connected at the point of penetration, the outer wall of the rotating rod (7) is fixed with a rotating gear (10), the rotating gear (10) is located inside the mounting base (9), the inner wall of the mounting base (9) is slidably equipped with a drive rack (11), the drive rack (11) meshes with the rotating gear (10), the outer wall of the drive rack (11) is fixed with a return spring (12). The end of the reset spring (12) is fixed to the inner wall of the mounting base (9), the end of the drive rack (11) passes through the mounting base (9) and is slidably connected at the penetration point, the top of the drive rack (11) is fixed with an L-shaped rod (13), the end of the L-shaped rod (13) is fixed with a pull rod (14), the outer wall of the pull rod (14) is fixed with a baffle plate (15), the baffle plate (15) can block the opening of the feed plate, and the baffle plate (15) slides on the inner wall of the feed plate; A square tube (16) is fixed to the outlet end of the inlet pipe (3). The inner wall of the square tube (16) has a rotating shaft (17). The outer wall of the rotating shaft (17) is fixed with a baffle plate (18). The inner wall of the square tube (16) is fixed with a spring plate (19). The spring plate (19) can contact the baffle plate (18).

2. A sewage treatment device for municipal engineering according to claim 1, characterized in that, The mounting base (9) can house the rotating gear (10), the drive rack (11) and the return spring (12) so that they are not exposed to sewage.

3. A sewage treatment device for municipal engineering according to claim 2, characterized in that, The baffle plate (18) and spring plate (19) can slow down the flow rate of sewage entering the square pipe (16).

4. A sewage treatment device for municipal engineering according to claim 3, characterized in that, The inner wall of the water storage tank (1) is provided with a scattering device, which is used to prevent the flocculant from falling too concentratedly. The inner wall of the water storage tank (1) is also provided with a moisture-proof device, which is used to reduce the moisture of the feed plate.

5. A sewage treatment device for municipal engineering according to claim 4, characterized in that, The scattering device includes: a centrifugal disc (301), which is fixed to the outer wall of the rotating rod (7); A baffle plate (302) is fixed to the top of a square tube (16), and the baffle plate (302) has a discharge port (303) on the outer wall facing the middle of the water storage tank (1). A scraper (304) is fixed to the top of the centrifugal disc (301) and the scraper (304) is attached to the inner wall of the barrier plate (302).

6. A sewage treatment device for municipal engineering according to claim 5, characterized in that, The top of the centrifugal disc (301) is fixed with a crushing spike (305), which is arranged in a circumferential array and located below the opening of the feed plate.

7. A sewage treatment device for municipal engineering according to claim 6, characterized in that, The moisture-proof device includes: an eccentric wheel (401), which is fixed to the outer wall of the rotating rod (7); A heat-conducting plate (402) is fixed to the top of a fixed plate (6), and an inclined top block (403) slides on the outer wall of the heat-conducting plate (402). A copper sheet (404) is fixed to the bottom of the feed plate, and the bottom of the copper sheet (404) is in contact with the top of the heat-conducting plate (402).

8. A sewage treatment device for municipal engineering according to claim 7, characterized in that, The outer wall of the heat-conducting plate (402) is fixed with a placement seat (405), the inner wall of the placement seat (405) is slidably fitted with a sliding block (406), the outer wall of the sliding block (406) is fixed with a pressing spring (407), and the end of the pressing spring (407) is fixed to the outer wall of the inclined top block (403).

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