A dynamic sludge treatment device and method for municipal wastewater

Abstract

The application discloses a kind of dynamic sludge treatment equipment and method of urban sewage, it is related to sewage treatment technical field, comprising: tank and support, the support is fixedly installed at tank top, the tank top is provided with feed inlet, sludge is filled into tank by feed inlet, the tank outer wall is provided with discharge gate, the tank top is rotatably installed with rotating shaft, the support inner wall is rotatably installed with No. 1 gear, motor output end rotation drives No. 1 gear rotation, No. 1 gear is connected with external motor, the rotating shaft outer wall is provided with a plurality of tooth slot, No. 1 gear rotation promotes tooth slot rotation to drive rotating shaft rotation, the rotating shaft outer wall is fixedly installed with a plurality of stirring paddles, stirring paddle is arranged in tank upper layer, stirring only to upper layer sludge when rotating, sludge in flocculation settlement area below will not be directly sheared, avoid stirring paddle to scatter again sludge that has flocculated in lower settlement area.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment, specifically relating to a dynamic sludge treatment device and method for urban wastewater. Background Technology

[0002] Sludge contains a large amount of water that is difficult to separate. By adding flocculants to the sludge, the fine sludge particles are flocculated into clumps, and the water is squeezed out to facilitate subsequent processing.

[0003] Patent publication number CN212999535U relates to a chemical conditioning tank, specifically in the field of sludge treatment equipment technology. The tank includes a conditioning tank body with a transmission mechanism located in the middle of its inner side. This transmission mechanism includes a main shaft, the upper end of which is rotatably connected to the upper end of the conditioning tank body. A mounting frame is fixedly connected to the bottom end of the main shaft, and a fixed shaft is fixedly connected to the middle of the bottom end of the inner side of the conditioning tank body. The upper end of the fixed shaft extends to the inner side of the mounting frame. This patent, through the arrangement of the transmission mechanism, drive motor, and stirring mechanism, allows the drive motor to rotate the main shaft, enabling the stirring mechanism to rotate both around the axis of the main shaft and around the axis of the hollow shaft. During this process, the mounting shaft and rotating blades also rotate, thereby achieving thorough and rapid stirring of the sludge, increasing the mixing speed of the sludge and coagulant, and accelerating the treatment process.

[0004] In the aforementioned patent, the stirring blades are installed close to the bottom of the conditioning tank. While the stirring blades promote the mixing of sludge and flocculant, they can also easily break up the already flocculated flocs, affecting the flocculation efficiency. Moreover, the flocculant is fed in a single point, which can easily lead to local enrichment of flocculant. Some sludge contains excessive flocculant, while some contains insufficient flocculant, making it difficult to ensure the uniformity of flocculant dosage. The sludge flow field inside the tank can easily cause the mature sludge flocs to flow back to the stirring and shearing zone. Some sludge flocs can easily settle to the bottom of the conditioning tank and harden, making it difficult to discharge the sludge later. Summary of the Invention

[0005] Various embodiments of the disclosed technology involve a dynamic sludge treatment device and method for urban sewage, in which an agitator is placed on the upper layer of the tank and only agitates the upper layer of sludge when rotating, without directly shearing the sludge in the lower flocculation and settling zone. This avoids the agitator breaking up the already flocculated sludge in the lower settling zone again, and divides the entire tank into an upper mixing zone and a lower settling zone, thereby improving sludge treatment efficiency.

[0006] According to the disclosed embodiments, a dynamic sludge treatment device for urban sewage includes: a tank and a support. The support is fixedly installed on the top of the tank. The top of the tank has an inlet for sludge to be poured into the tank through the inlet. The outer wall of the tank has an outlet. A rotating shaft is rotatably installed on the top of the tank. A first gear is rotatably installed on the inner wall of the support. A motor output drives the first gear to rotate. The first gear is connected to an external motor. The outer wall of the rotating shaft has several tooth grooves that mesh with the first gear. Rotation of the first gear drives the tooth grooves to rotate, thus rotating the rotating shaft. Several stirring paddles are fixedly installed on the wall. The rotation of the shaft drives the stirring paddles to rotate. Through the agitation of the stirring paddles, a medicine tank is set on the top of the support. A sliding tube is slidably installed on the inner wall of the support. The sliding tube is sleeved with the shaft. A connecting pipe is connected to the outer wall of the sliding tube. The sliding tube is connected to the medicine tank through the connecting pipe. A cavity is set inside the shaft. Several nozzles are opened on the surface of the stirring paddle. The nozzles are integrated on the surface of the stirring paddle and move with the rotation of the stirring paddle. The nozzles are connected to the cavity inside the stirring paddle. Flocculant flows from the medicine tank into the shaft through the connecting pipe and the sliding tube, and finally flows into the stirring paddle and flows out through the nozzles.

[0007] In some implementations, a second gear is rotatably mounted on the inner wall of the support, meshing with a first gear. When the first gear rotates, it also drives the second gear to rotate. A rack is rotatably mounted on the top of the slide tube, meshing with the second gear. When the second gear rotates, it pushes the rack downwards. A slot is formed on the front side of the second gear, and a protrusion is provided on the slot wall. A push block is slidably mounted in the slot. When the protrusion rotates to the push block, it pushes the push block to the right. A slider is slidably mounted on the right side of the rack, hinged to the push block. After the push block moves to the right, it pushes the slider to rotate, and the slider rotates, pushing the rack to rotate. A first spring is provided between the slide tube and the rotating shaft. The rack intermittently meshes with the second gear, causing the slide tube to move up and down repeatedly. When the slide tube moves downwards, it provides positive pressure inside the cavity, squeezing out the flocculant. When the slide tube returns to its original position, the flocculant flows from the slide tube into the cavity, replenishing the flocculant. The elastic force of the first spring causes the slide tube to return to its original position.

[0008] In some implementations, a baffle is slidably installed at the bottom of the slide tube. After the slide tube resets, it drives the baffle to move upward. The baffle is subjected to friction and moves downward away from the slide tube. The surface of the baffle has a leakage hole, through which flocculant flows into the cavity and the agitator. A second spring is provided between the baffle and the slide tube. The elastic force of the second spring supports the baffle. The connecting pipe is made of flexible rubber. A crossbar is fixedly installed on the inner wall of the support near the connecting pipe. Each time the slide tube moves upward, the end of the connecting pipe near the slide tube is lifted. The lifted connecting pipe contacts the crossbar, and under the obstruction of the crossbar, the middle of the connecting pipe is forcibly bent and flattened, closing the flocculant flow channel in the connecting pipe. A one-way check valve is provided in the nozzle to prevent sludge from flowing back into the agitator through the nozzle.

[0009] In some implementations, a circular frame is fixedly installed on the inner wall of the tank. Several partition columns are rotatably installed on both sides of the surface of the circular frame. A gear ring is fixedly installed on the outer wall of the rotating shaft. The rotation of the rotating shaft drives the gear ring to rotate. A rotating rod is rotatably installed on the inner wall of the circular frame. A No. 3 gear is fixedly installed on one end of the rotating rod near the gear ring. The No. 3 gear meshes with the gear ring. When the gear ring rotates, it pushes the No. 3 gear to rotate, thereby driving the rotating rod to rotate. Several protruding rods are fixedly installed on the outer wall of the rotating rod. The rotation of the rotating rod drives the protruding rods to rotate. A protrusion is fixedly installed on the surface of the partition column near the protruding rod. During the rotation of the protruding rod, it will frequently contact the protrusion, pushing the protrusion to rotate, thereby driving the partition column to rotate. Through the rotation of the partition column, the sludge flocs above the partition column are successfully pushed to the sedimentation and flocculation zone below.

[0010] In some implementations, rotating plates are rotatably mounted on both sides of the outer wall of the partition column. A connecting plate is hinged to the bottom of the rotating plate. An upper abutment rod is fixedly mounted on the surface of the circular frame near the rotating plate. The upper abutment rod presses the rotating plate downward, causing it to rotate towards the partition column and drive the connecting plate downward. At this time, the rotating plate and the connecting plate are deflected and then fit against the surface of the partition column. A lower abutment rod is fixedly mounted on the surface of the circular frame near the connecting plate. The pressure of the lower abutment rod on the bottom of the connecting plate pushes the connecting plate and the rotating plate to rotate, and causes the connecting plate and the rotating plate to bulge at their hinge point, intermittently changing the flow state of the gap between the partition columns.

[0011] In some implementations, a first torsion spring is provided between the partition column and the circular frame, a second torsion spring is provided between the rotating plate and the partition column, the elastic force of the second torsion spring drives the rotating plate to reset, and a third torsion spring is provided between the connecting plate and the rotating plate, the elastic force of the third torsion spring keeps the bottom of the connecting plate in contact with the outer wall of the partition column.

[0012] In some implementations, several scrapers are fixedly installed at the bottom of the rotating shaft. When the rotating shaft rotates, it drives the bottom scrapers to rotate. The scrapers always rotate in contact with the bottom of the tank, intermittently scooping up the flocs that have settled at the bottom in the flocculation settling zone. The scrapers are in contact with the bottom of the inner wall of the tank, and the bottom of the scrapers always stays in contact with the bottom of the tank. Moreover, the scooping action only occurs at the bottom of the tank and does not shear the flocs.

[0013] In some implementations, a spring plate is rotatably mounted on the top of the scraper, and a stop bar is fixedly mounted on the inner wall of the tank near the spring plate. When the scraper rotates, it drives the spring plate to rotate. When the spring plate rotates to contact the stop bar, it rotates downward under the pressure of the stop bar. A fourth torsion spring is provided between the spring plate and the scraper. The spring plate rotates upward and resets under the elastic force of the fourth torsion spring. A pressure plate is rotatably mounted on the top of the spring plate, and a fifth torsion spring is provided between the pressure plate and the spring plate. The bottom of the pressure plate pushes backward while adhering to the bottom of the tank, loosening the settled flocs in the area that the subsequent scraper is about to sweep in advance, thereby improving the scraper's stripping effect on the flocs.

[0014] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention promotes uniform mixing of concentrated sludge and flocculant through the agitation of the stirring paddle. Simultaneously, the nozzles are integrated into the surface of the stirring paddle and move with its rotation. The flocculant flows out from the continuously moving nozzles, improving the mixing efficiency between the flocculant and sludge after it flows out, ensuring uniform sludge flow and increased contact with the sludge. The stirring paddle is positioned on the upper layer of the tank, and during rotation, it only agitates the upper layer of sludge, avoiding direct shearing of the sludge in the lower flocculation and settling zone. This prevents the stirring paddle from further breaking up the already flocculated sludge in the lower settling zone, effectively dividing the entire tank into an upper mixing zone and a lower settling zone, thus improving sludge treatment efficiency.

[0015] In this invention, a sliding tube moves up and down reciprocally within a rotating shaft. When the sliding tube moves downward, it drives a baffle to move downward as well. The baffle forms a piston structure with the internal cavity of the rotating shaft, compressing the gas inside the cavity by pressing down on it, thus increasing the positive pressure inside the cavity. This provides a stable pressure for the flocculant inside the cavity and the agitator, ensuring that the flocculant can be squeezed out. When the sliding tube returns to its original position, the flocculant enters the cavity through the bottom of the sliding tube, replenishing the cavity with flocculant. Furthermore, the flocculant flow channel is intermittently closed through a connecting pipe, ensuring that the flocculant enters the sliding tube and cavity evenly and quantitatively each time. The flocculant is sprayed out in small amounts and multiple times at the nozzle, improving the utilization rate of the flocculant, avoiding waste, and allowing the flocculant to mix more evenly with the sludge.

[0016] This invention uses a separator column to block the flocculated sludge in the lower settling zone, preventing it from flowing back up and being dispersed again by the agitator due to the stirring paddle. This ensures that the sludge maintains its morphological integrity after flocculation. At the same time, it can also push the flocculated clumps that have not reached the lower settling zone, promoting their entry into the lower settling zone. Furthermore, the rotating plate and connecting plate will intermittently align with the separator column and then rise away from it, intermittently changing the flow state of the gaps between the separator columns. This allows the flocculated clumps above the separator column to pass through the gaps in an orderly and quantitative manner, preventing the gaps from becoming blocked.

[0017] This invention features a scraper that rotates while always adhering to the bottom of the tank, intermittently scooping up the flocculated clumps that have settled at the bottom of the flocculation settling zone. This prevents mature flocculated clumps from excessively accumulating and hardening at the bottom, which would affect subsequent discharge from the tank. The scraper's bottom remains in contact with the tank bottom, and the scooping action only occurs at the bottom of the tank, without shearing the flocculated clumps. Without damaging the overall structure of the flocculated clumps, only the flocculated clumps at the bottom are peeled off. While the scraper sweeps at the bottom of the tank, a spring plate intermittently bounces up, pushing the flocculated clumps just scooped up by the front scraper upwards to prevent them from quickly settling back to the bottom after being peeled off. At the same time, a pressure plate pushes backwards to loosen the flocculated clumps in the area that the next scraper will sweep over, thus improving the scraper's effect on peeling off the flocculated clumps. 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 tank in this invention; Figure 3 This is a schematic diagram of the internal structure of the support in this invention; Figure 4 This is a schematic diagram of the first gear in this invention; Figure 5 This is a schematic diagram of the tooth groove in the present invention; Figure 6 This is a schematic diagram of gear number two in this invention; Figure 7 This is a schematic diagram of the nozzle in this invention; Figure 8 This is a schematic diagram of the baffle in the present invention; Figure 9 This is a schematic diagram of the circular frame in this invention; Figure 10 This is a schematic diagram of the separator column in this invention; Figure 11 This is a schematic diagram of the gear ring in this invention; Figure 12 This is a schematic diagram of the protruding rod in this invention; Figure 13 This is a schematic diagram of the transfer plate in this invention; Figure 14 This is a schematic diagram of the upper abutment rod in this invention; Figure 15 This is a schematic diagram of the scraper in this invention; Figure 16 This is a schematic diagram of the pressure plate in this invention.

[0019] Figure label: 1. Tank body; 2. Support; 3. Inlet; 4. Outlet; 51. Rotating shaft; 52. Agitator; 53. Medicine tank; 54. Connecting pipe; 55. Sliding pipe; 56. No. 1 gear; 58. Gear groove; 59. Gear No. 2; 510. Rack; 511. Slot; 512. Push block; 513. Sliding block; 514. Baffle; 515. Leakage hole; 516. Crossbar; 61. Circular frame; 62. Divider column; 63. Gear ring; 64. Gear No. 3; 65. Rotating rod; 66. Protruding rod; 67. Protrusion; 68. Rotating plate; 69. Connecting plate; 610. Upper abutment rod; 611. Lower abutment rod; 71. Scraper; 72. Spring plate; 73. Stop bar; 74. Pressure plate. Detailed Implementation

[0020] The following specific embodiments illustrate the implementation of the present invention. Those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. 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. Example

[0021] like Figures 1 to 16 As shown in this embodiment, a dynamic sludge treatment device for urban sewage includes: a tank 1 and a support 2. The support 2 is fixedly installed on the top of the tank 1. The top of the tank 1 is provided with an inlet 3, through which sludge is poured into the tank 1. The outer wall of the tank 1 is provided with an outlet 4. A rotating shaft 51 is rotatably installed on the top of the tank 1. A first gear 57 is rotatably installed on the inner wall of the support 2. The output end of the motor rotates to drive the first gear 57 to rotate. The first gear 57 is connected to an external motor. The outer wall of the rotating shaft 51 has several toothed grooves 58, which mesh with the first gear 57. After the first gear 57 rotates, it pushes the toothed grooves 58 to rotate, thereby driving the rotating shaft 51 to rotate. Several stirring paddles 52 are fixedly installed on the outer wall of the rotating shaft 51. The rotation of the rotating shaft 51 drives the stirring paddles 52 to rotate. Through the agitation of the stirring paddles 52, the sludge is concentrated. The uniform mixing of sludge and flocculant is achieved through a support 2 with a medicine tank 53 at the top and a sliding tube 55 slidably installed on the inner wall of the support 2. The sliding tube 55 is connected to the rotating shaft 51, and a connecting pipe 54 is connected to the outer wall of the sliding tube 55. The sliding tube 55 is connected to the medicine tank 53 through the connecting pipe 54. The rotating shaft 51 has a cavity inside, and several nozzles 56 are opened on the surface of the stirring paddle 52. The nozzles 56 are integrated on the surface of the stirring paddle 52 and move with the rotation of the stirring paddle 52. The nozzles 56 are connected to the cavity inside the stirring paddle 52. The flocculant flows from the medicine tank 53 into the rotating shaft 51 through the connecting pipe 54 and the sliding tube 55, and finally flows into the stirring paddle 52 and flows out through the nozzles 56. With the continuous movement of the nozzles 56, the mixing efficiency of the flocculant with the sludge after it flows out can be improved, so that the sludge flows out evenly and the contact degree with the sludge can be improved.

[0022] A second gear 59 is rotatably mounted on the inner wall of bracket 2. The second gear 59 meshes with a first gear 57. When the first gear 57 rotates, it also drives the second gear 59 to rotate. A rack 510 is rotatably mounted on the top of slide tube 55. The rack 510 meshes with the second gear 59. When the second gear 59 rotates, it pushes the rack 510 downwards. A slot 511 is provided on the front side of the second gear 59. A protrusion is provided on the wall of the slot 511. A pusher block 512 is slidably mounted in the slot 511. When the protrusion rotates and reaches the pusher block 512, it pushes the pusher block 512 to the right. The rack 510... A slider 513 is slidably mounted on the right side. The slider 513 is hinged to the push block 512. After the push block 512 moves to the right, it pushes the slider 513 to rotate. After the slider 513 rotates, it pushes the rack 510 to rotate. A first spring is provided between the slide tube 55 and the rotating shaft 51. The rack 510 intermittently meshes with the second gear 59. The slide tube 55 moves up and down back and forth. When the slide tube 55 moves downward, it provides positive pressure to the cavity and squeezes out the flocculant in the cavity. When the slide tube 55 returns to its original position, the flocculant flows from the slide tube 55 into the cavity, completing the replenishment of the flocculant. The elastic force of the first spring causes the slide tube 55 to return to its original position.

[0023] A baffle 514 is slidably installed at the bottom of the slide tube 55. After the slide tube 55 returns to its original position, it causes the baffle 514 to move upward. The baffle 514 moves downward away from the slide tube 55 due to friction. A perforation 515 is provided on the surface of the baffle 514, through which flocculant flows into the cavity and the stirring paddle 52. A second spring is provided between the baffle 514 and the slide tube 55. The elastic force of the second spring provides support for the baffle 514. The connecting pipe 54 is made of flexible rubber. A crossbar 516 is fixedly installed on the inner wall of the bracket 2 near the connecting pipe 54. Each time the slide tube 55 moves upward... During operation, the connecting pipe 54 near the slide pipe 55 will be lifted. The lifted connecting pipe 54 will contact the crossbar 516, and under the obstruction of the crossbar 516, the middle part of the connecting pipe 54 will be forcibly bent and flattened, closing the flocculant flow channel in the connecting pipe 54. The flocculant will enter the slide pipe 55 and cavity evenly and quantitatively each time. The flocculant will be sprayed out in small amounts and multiple times at the nozzle 56 to improve the utilization rate of the flocculant and avoid waste. The flocculant will be mixed more evenly with the sludge. A one-way check valve is installed in the nozzle 56 to prevent the sludge from flowing back into the agitator 52 through the nozzle 56.

[0024] A method for using a dynamic sludge treatment device for urban sewage includes the following steps: Step 1: Pour sludge into the tank 1 through the feed inlet 3, start the external motor to drive the agitator 52 to rotate, and add flocculant to the sludge while the agitator 52 agitates the sludge. At the same time, the slide tube 55 moves back and forth to continuously supply flocculant to the agitator 52. Step 2: The separator column 62 separates the upper mixing zone and the lower settling and flocculation zone, keeping the sludge flocs at the bottom. The separator column 62 rotates to push the upper flocs into the lower settling and flocculation zone. Step 3: The rotating shaft 51 drives the scraper 71 to sweep at the bottom of the tank 1, shoveling up the sludge flocs that have settled and hardened at the bottom.

[0025] In this embodiment, after the sludge in the urban sewage undergoes pre-concentration treatment, it needs to be flocculated. The concentrated sludge is poured into a conditioning tank and stirred, and the flocculation effect is improved by injecting flocculant into the sludge.

[0026] Sludge is poured into tank 1 through inlet 3. The external motor is started, and the output of the motor rotates, driving gear 57 to rotate. Gear 57 then drives gear 58 to rotate, which in turn drives shaft 51 to rotate. Shaft 51 rotates, which in turn drives agitator 52 to rotate. The agitator 52 promotes the uniform mixing of concentrated sludge and flocculant. At the same time, nozzle 56 is integrated on the surface of agitator 52 and moves with the rotation of agitator 52. Flocculant flows from tank 53 into shaft 51 through connecting pipe 54 and sliding pipe 55, and finally flows into agitator 52 and out through nozzle 56. As nozzle 56 moves continuously, the mixing efficiency of flocculant with sludge after it flows out is improved, and the sludge flows out evenly, increasing the degree of contact with the sludge. The stirring paddle 52 is installed at the upper quarter of the inside of the tank 1. When it rotates, it only stirs the upper layer of sludge. Compared with the prior art, the stirring paddle 52 in this invention does not directly shear the sludge in the lower flocculation and settling zone, thus avoiding the stirring paddle 52 from breaking up the already flocculated sludge in the lower settling zone again. This divides the entire tank 1 into an upper mixing zone and a lower settling zone, thereby improving the sludge treatment efficiency.

[0027] When gear 1 57 rotates, it also drives gear 2 59 to rotate. When gear 2 59 rotates, it pushes rack 510 to move downward, causing slide tube 55 to slide into the rotating shaft 51. After slide tube 55 slides, it drives baffle 514 to move downward. Baffle 514 forms a piston structure with the cavity inside the rotating shaft 51. By pressing down and squeezing the gas inside the cavity through baffle 514, the positive pressure inside the cavity is increased, thereby providing stable pressure for the flocculant inside the cavity and the agitator 52, ensuring that the flocculant can be squeezed out and sprayed out from nozzle 56.When gear 59 rotates, it drives slot 511 to rotate. The inner contour of slot 511 is mostly a standard circular arc, with only one outwardly raised protrusion in the circumferential direction. The push block can slide circumferentially along the inner contour of the slot. When slot 511 rotates, it drives the protrusion to rotate. When rack 510 moves to the bottom, the protrusion rotates to push block 512. Before this, push block 512 was always in the circular part of slot 511. So when the protrusion rotates to push block 512, it pushes push block 512 to the right. After push block 512 moves to the right, it pushes slider 513 to rotate. After slider 513 rotates, it pushes rack 510 to rotate, causing rack 510 to disengage from gear 59. The rack 510 engages with the first spring and then returns to its original position, causing the slide tube 55 to lift and return to its original position. After the slide tube 55 returns to its original position, it causes the baffle 514 to move upward. When the baffle 514 moves upward, the friction between the baffle 514 and the inner wall of the rotating shaft 51 causes the baffle 514 to be subjected to a downward reaction force, pushing the baffle 514 away from the bottom of the slide tube 55 and releasing the limiting obstruction on the bottom of the slide tube 55. At this time, the flocculant flowing from the medicine tank 53 into the slide tube 55 can flow through the bottom of the slide tube 55 to the baffle 514, and then flow into the cavity and the stirring paddle 52 through the leakage hole 515. After the rack 510 returns to its original position, the protrusion on the surface of the slot 511 also passes over the push block 512, and the push block 512 returns to its original position. Positioned within the circular portion of the slot 511, the reset push block 512 pulls the slider 513 to reset and rotate, thereby tractioning the rack 510 to rotate and reset. The rack 510 then meshes with the second gear 59 again. Therefore, during the rotation of the second gear 59, the rack 510 intermittently meshes with and disengages from the second gear 59, causing the rack 510 and the slide tube 55 to move continuously up and down. When the slide tube 55 moves upward, the baffle 514 separates from the bottom of the slide tube 55, and the flocculant enters the cavity from the bottom of the slide tube 55. When the slide tube 55 moves downward, the baffle 514, under the counterforce of the friction on the inner wall of the rotating shaft 51, adheres to the bottom of the slide tube 55, blocking the bottom of the slide tube 55. At this time, the slide tube 55 and the baffle 51... 4. After synchronous downward pressure, the positive pressure in the cavity is increased, forcing the flocculant out through the nozzle 56 and mixing it with the sludge. At the same time, each time the slide tube 55 moves upward, the end of the connecting pipe 54 near the slide tube 55 is lifted. The lifted connecting pipe 54 will contact the crossbar 516, and under the obstruction of the crossbar 516, the middle part of the connecting pipe 54 will be forcibly bent and flattened, closing the flocculant flow channel in the connecting pipe 54 and temporarily preventing the flocculant in the tank 53 from continuing to flow into the slide tube 55 and the cavity through the connecting pipe 54. This ensures that the flocculant enters the slide tube 55 and the cavity evenly and quantitatively each time, and the flocculant is sprayed out in small amounts and multiple times at the nozzle 56, improving the utilization rate of the flocculant, avoiding waste, and making the flocculant mix more evenly with the sludge. Example

[0028] like Figures 1 to 16As shown, this embodiment of a dynamic sludge treatment device for urban sewage includes all the technical features of Embodiment 1. In addition, a circular frame 61 is fixedly installed on the inner wall of the tank 1. Several partition columns 62 are rotatably installed on both sides of the surface of the circular frame 61. A gear ring 63 is fixedly installed on the outer wall of the rotating shaft 51. Rotation of the rotating shaft 51 drives the gear ring 63 to rotate. A rotating rod 65 is rotatably installed on the inner wall of the circular frame 61. A third gear 64 is fixedly installed on one end of the rotating rod 65 near the gear ring 63. The third gear 64 meshes with the gear ring 63. When the gear ring 63 rotates, it pushes the third gear 64 to rotate, thereby driving... Rotating rod 65 rotates, and several protruding rods 66 are fixedly installed on the outer wall of rotating rod 65. The rotation of rotating rod 65 drives the protruding rods 66 to rotate. Protrusions 67 are fixedly installed on the surface of partition column 62 near the protruding rods 66. During the rotation of the protruding rods 66, they will frequently contact the protrusions 67, pushing the protrusions 67 to rotate, thereby driving the partition column 62 to rotate. Through the rotation of partition column 62, the sludge flocs above partition column 62 are successfully pushed to the lower settling and flocculation zone. Partition column 62 can not only prevent the backflow of flocs in the lower settling zone, but also promote the successful entry of flocs that have not entered the flocculation and settling zone into the flocculation and settling zone.

[0029] Rotating plates 68 are rotatably mounted on both sides of the outer wall of the partition column 62. A connecting plate 69 is hinged to the bottom of the rotating plate 68. An upper abutment rod 610 is fixedly mounted on the surface of the circular frame 61 near the rotating plate 68. The upper abutment rod 610 presses the rotating plate 68 downward, causing it to rotate towards the partition column 62, and also causing the connecting plate 69 to press down. At this time, both the rotating plate 68 and the connecting plate 69 are deflected and fit against the surface of the partition column 62. A lower abutment rod 61 is fixedly mounted on the surface of the circular frame 61 near the connecting plate 69. 1. The pressure of the lower abutment rod 611 on the bottom of the connecting plate 69 pushes the connecting plate 69 and the rotating plate 68 to rotate, and causes the connecting plate 69 and the rotating plate 68 to bulge at their hinge point. This intermittently changes the flow state of the gap between the partition columns 62, allowing the flocs above the partition columns 62 to pass through the gap in an orderly and quantitative manner, avoiding blockage of the gap. At the same time, each time the rotating plate 68 and the connecting plate 69 bulge, they will push the flocs that reach the gap downwards to the settling and flocculation zone, promoting the flocs to enter the settling and flocculation zone.

[0030] A first torsion spring is provided between the partition column 62 and the circular frame 61, and a second torsion spring is provided between the rotating plate 68 and the partition column 62. The elastic force of the second torsion spring drives the rotating plate 68 to reset. A third torsion spring is provided between the connecting plate 69 and the rotating plate 68. The elastic force of the third torsion spring keeps the bottom of the connecting plate 69 in contact with the outer wall of the partition column 62.

[0031] In this embodiment, the tank 1 has multiple partition columns 62 in the middle, with a certain gap between adjacent partition columns 62. In the upper mixing zone, the sludge is uniformly mixed with the flocculant under the stirring of the agitator 52. The agitator 52 is installed at a certain angle and generates a downward axial flow to the sludge when it rotates. After the sludge is mixed with the flocculant in the mixing zone, it will not immediately flocculate into clumps. Instead, it will undergo a chemical reaction process and flow downwards under the downward pressure generated by the rotation of the agitator 52. During the downward flow, it will gradually flocculate into clumps. The partition columns 62 block the flocculated sludge in the lower settling zone, preventing the flocculated sludge from flowing back to the upper zone under the disturbance of the agitator 52 and being dispersed again by the shearing of the agitator 52, thus ensuring that the sludge maintains its morphological integrity after flocculation. Although the sludge is divided into an upper mixing zone and a lower flocculation and settling zone by the partition structure composed of partition columns 62, the timing and location of sludge flocculation are random and non-linear. The sludge may undergo a chemical reaction before entering the settling zone, initially forming a small amount of flocculation above the partition columns 62. The rotation of the shaft 51 drives the gear ring 63 to rotate, which in turn drives the third gear 64 to rotate, thereby driving the rotating rod 65 to rotate. The rotation of the rotating rod 65 drives the convex rod 66 to rotate, and the convex rod 66 will frequently come into contact with the shaft during its rotation. The protrusion 67 is pushed to rotate, thereby driving the partition column 62 to rotate. When the protrusion 66 passes the protrusion 67, the partition column 62 returns to its original position under the elastic force of the first torsion spring. This cycle continues. During the rotation of the protrusion 66, the partition column 62 is driven to reciprocate. Through the rotation of the partition column 62, the sludge flocs above the partition column 62 are successfully pushed to the lower settling and flocculation zone. The partition column 62 can not only block the backflow of flocs in the lower settling zone, but also promote the successful entry of flocs that have not entered the flocculation and settling zone into the flocculation and settling zone.

[0032] Each protruding rod 66 is positioned between two adjacent partition columns 62, causing the adjacent partition columns 62 to rotate simultaneously towards the central gap and then reset. When the adjacent partition columns 62 reset to both sides, they cause the rotating plate 68 and connecting plate 69 to rotate along the outer circumferential surface of the partition column 62. During the rotation of the rotating plate 68, it is squeezed by the upper abutment rod 610, which presses the rotating plate 68 downward, causing it to rotate towards the partition column 62 and causing the connecting plate 69 to press down. At this time, the rotating plate 68 and connecting plate 69 are both deflected and adhere to the surface of the partition column 62, without obstructing the upper flocs. At this time, the sludge above the partition column 62 reaches the gap. When the adjacent partition columns 62 complete their reset, they rotate simultaneously towards the gap again. When the direction is rotated, the separator 62 will drive the connecting plate 69 to rotate to the lower abutment rod 611. The pressure of the lower abutment rod 611 on the bottom of the connecting plate 69 will push the connecting plate 69 and the rotating plate 68 to rotate, and cause the connecting plate 69 and the rotating plate 68 to bulge at their hinge. The rotating plate 68 and the connecting plate 69 between adjacent separators 62 will intermittently come into contact with the separator 62 and then bulge away from the separator 62, intermittently changing the flow state of the gap between the separators 62, so that the flocs above the separators 62 can pass through the gaps in an orderly and quantitative manner, avoiding the gaps from being blocked. At the same time, each time the rotating plate 68 and the connecting plate 69 bulge, they will push the flocs that reach the gaps downwards to the settling and flocculation zone, promoting the flocs to enter the settling and flocculation zone. Example

[0033] like Figures 1 to 16 As shown, this embodiment of a dynamic sludge treatment device for urban sewage includes all the technical features of embodiment 2. In addition, several scrapers 71 are fixedly installed at the bottom of the rotating shaft 51. When the rotating shaft 51 rotates, it drives the bottom scrapers 71 to rotate. The scrapers 71 always rotate in contact with the bottom of the tank 1, intermittently shoveling up the flocculated clumps that have settled in the flocculation settling zone. This avoids the mature flocculated clumps from accumulating and hardening excessively at the bottom, which would affect the subsequent discharge from the inside of the tank 1. The scrapers 71 are in contact with the bottom of the inner wall of the tank 1. The bottom of the scrapers 71 always stays in contact with the bottom of the tank 1, and the shoveling action only occurs at the bottom of the tank 1. It does not shear the flocculated clumps. Without damaging the overall structure of the flocculated clumps, it only peels off the flocculated clumps that have settled at the bottom.

[0034] A spring plate 72 is rotatably mounted on the top of the scraper 71. A stop bar 73 is fixedly mounted on the inner wall of the tank 1 near the spring plate 72. When the scraper 71 rotates, it drives the spring plate 72 to rotate. When the spring plate 72 rotates to contact the stop bar 73, the spring plate 72 rotates downward under the pressure of the stop bar 73. A fourth torsion spring is provided between the spring plate 72 and the scraper 71. The spring plate 72 rotates upward and resets under the elastic force of the fourth torsion spring, and pushes the flocs that the front scraper 71 has just scooped up upward to prevent the flocs from sinking to the bottom quickly after being peeled off. A pressure plate 74 is rotatably mounted on the top of the spring plate 72. A fifth torsion spring is provided between the pressure plate 74 and the spring plate 72. The bottom of the pressure plate 74 pushes backward while adhering to the bottom of the tank 1, loosening the flocs that are about to be swept by the subsequent scraper 71 in advance, and improving the peeling effect of the scraper 71 on the flocs.

[0035] In this embodiment, during operation: the rotating shaft 51 drives the bottom scraper 71 to rotate. The scraper 71 always rotates in contact with the bottom of the tank 1, intermittently scooping up the flocculated clumps that have settled at the bottom of the flocculation settling zone. This prevents mature flocculated clumps from excessively accumulating and hardening at the bottom, which would affect subsequent discharge from the tank 1. The scraper 71 always remains in contact with the bottom of the tank 1, and the scooping action only occurs at the bottom of the tank 1, without shearing the flocculated clumps. Without damaging the overall structure of the flocculated clumps, only the flocculated clumps at the bottom are peeled off. At the same time, the rotation of the scraper 71 drives the spring plate 72 to rotate. When the spring plate 72 rotates to contact the baffle 73, the spring plate 72 rotates downwards under the pressure of the baffle 73, and continues to rotate until... After passing the stop bar 73, the spring plate 72, which was previously limited by the stop bar 73, is suddenly released. Under the elastic force of the fourth torsion spring, the spring plate 72 rotates upward to reset, pushing the flocculated clumps just scooped up by the front scraper 71 upward, preventing the flocculated clumps from quickly sinking back to the bottom after being peeled off. Moreover, each time the spring plate 72 is squeezed downward by the stop bar 73, it causes the pressure plate 74 to deflect downward until the side of the pressure plate 74 away from the spring plate 72 contacts the bottom of the tank 1. As the spring plate 72 continues to rotate, it continuously squeezes the pressure plate 74, causing the bottom of the pressure plate 74 to push backward while adhering to the bottom of the tank 1. This loosens the flocculated clumps in the area that the subsequent scraper 71 is about to sweep, improving the peeling effect of the scraper 71 on the flocculated clumps. Finally, after the sludge inside the tank 1 has completed flocculation, the flocculated sludge is discharged through the discharge port 4.

[0036] Although the present invention has been described in detail above with general descriptions and specific embodiments, modifications or improvements can be made to it, which will be obvious to those skilled in the art. Therefore, all such modifications or improvements made without departing from the spirit of the present invention fall within the scope of protection claimed by the present invention.

[0037] The terms such as "upper," "lower," "left," "right," and "middle" used in this specification are merely for clarity of description and are not intended to limit the scope of the invention. Any changes or adjustments to their relative relationships, without substantially altering the technical content, should also be considered within the scope of the invention.

Claims

1. A dynamic sludge treatment device for urban sewage, comprising: A tank body (1) and a support (2), wherein the support (2) is fixedly installed on the top of the tank body (1), the top of the tank body (1) is provided with a feed inlet (3), and the outer wall of the tank body (1) is provided with a discharge outlet (4). The tank body (1) is characterized by having a rotating shaft (51) rotatably installed on the top of the tank body (1), and a first gear (57) rotatably installed on the inner wall of the support (2). The first gear (57) is connected to an external motor. The outer wall of the rotating shaft (51) is provided with several toothed grooves (58), which mesh with the first gear (57). The outer wall of the bracket (2) is fixedly installed with several stirring paddles (52). The top of the bracket (2) is provided with a medicine tank (53). The inner wall of the bracket (2) is slidably installed with a sliding tube (55). The sliding tube (55) is sleeved with the rotating shaft (51). The outer wall of the sliding tube (55) is connected with a connecting pipe (54). The sliding tube (55) is connected to the medicine tank (53) through the connecting pipe (54). The rotating shaft (51) is provided with a cavity. The surface of the stirring paddle (52) is provided with several nozzles (56). The nozzles (56) are connected to the cavity inside the stirring paddle (52).

2. The dynamic sludge treatment equipment for urban sewage according to claim 1, characterized in that, The second gear (59) is rotatably mounted on the inner wall of the bracket (2). The second gear (59) meshes with the first gear (57). A rack (510) is rotatably mounted on the top of the slide tube (55). The rack (510) meshes with the second gear (59). A slot (511) is provided on the front side of the second gear (59). The slot (511) has a protrusion on its wall. A push block (512) is slidably mounted in the slot (511). A slider (513) is slidably mounted on the right side of the rack (510). The slider (513) is hinged to the push block (512). A first spring is provided between the slide tube (55) and the rotating shaft (51).

3. The dynamic sludge treatment equipment for urban sewage according to claim 2, characterized in that, A baffle (514) is slidably installed at the bottom of the slide tube (55). A leakage hole (515) is opened on the surface of the baffle (514). A second spring is provided between the baffle (514) and the slide tube (55). The connecting tube (54) is made of flexible rubber material. A crossbar (516) is fixedly installed on the inner wall of the bracket (2) near the connecting tube (54). A one-way check valve is provided in the nozzle (56).

4. The dynamic sludge treatment equipment for urban sewage according to claim 3, characterized in that, A circular frame (61) is fixedly installed on the inner wall of the tank (1). Several partition columns (62) are rotatably installed on both sides of the surface of the circular frame (61). A gear ring (63) is fixedly installed on the outer wall of the rotating shaft (51). A rotating rod (65) is rotatably installed on the inner wall of the circular frame (61). A No. 3 gear (64) is fixedly installed on one end of the rotating rod (65) near the gear ring (63). The No. 3 gear (64) meshes with the gear ring (63). Several protruding rods (66) are fixedly installed on the outer wall of the rotating rod (65). A protrusion (67) is fixedly installed on the surface of the partition column (62) near the protruding rod (66).

5. The dynamic sludge treatment equipment for urban sewage according to claim 4, characterized in that, The outer walls of the partition column (62) are rotatably mounted with rotating plates (68), and the bottom of the rotating plates (68) is hinged with connecting plates (69). The upper abutment rod (610) is fixedly installed on the surface of the circular frame (61) near the rotating plates (68), and the lower abutment rod (611) is fixedly installed on the surface of the circular frame (61) near the connecting plates (69).

6. A dynamic sludge treatment device for urban sewage according to claim 5, characterized in that, A first torsion spring is provided between the partition column (62) and the circular frame (61), a second torsion spring is provided between the rotating plate (68) and the partition column (62), and a third torsion spring is provided between the connecting plate (69) and the rotating plate (68).

7. A dynamic sludge treatment device for urban sewage according to claim 6, characterized in that, Several scrapers (71) are fixedly installed at the bottom of the rotating shaft (51), and the scrapers (71) are in contact with the bottom of the inner wall of the tank (1).

8. A dynamic sludge treatment device for urban sewage according to claim 7, characterized in that, A spring plate (72) is rotatably mounted on the top of the scraper (71), and a stop bar (73) is fixedly mounted on the inner wall of the tank (1) near the spring plate (72). A fourth torsion spring is provided between the spring plate (72) and the scraper (71), and a pressure plate (74) is rotatably mounted on the top of the spring plate (72). A fifth torsion spring is provided between the pressure plate (74) and the spring plate (72).

9. A method of using a dynamic sludge treatment device for urban sewage, comprising using the dynamic sludge treatment device for urban sewage as described in claim 8, characterized in that, Includes the following steps: Step 1: Pour sludge into the tank (1) from the feed inlet (3), start the external motor to drive the stirring paddle (52) to rotate, while the stirring paddle (52) stirs the sludge and adds flocculant to the sludge, and at the same time the slide pipe (55) moves back and forth to continuously provide flocculant to the stirring paddle (52); Step 2: The separator (62) separates the upper mixing zone and the lower settling and flocculation zone, keeping the sludge flocs at the bottom. The separator (62) rotates to push the upper flocs into the lower settling and flocculation zone. Step 3: The rotating shaft (51) drives the scraper (71) to sweep at the bottom of the tank (1) and scoop up the sludge flocs that have settled at the bottom.

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