A municipal sewage treatment device

Abstract

This invention belongs to the field of wastewater treatment technology, and particularly relates to a municipal wastewater treatment device, including a sedimentation unit. The sedimentation unit comprises a first annular strip assembly and several sedimentation components evenly distributed along the length of the first annular strip assembly. Each sedimentation component includes side plates, connecting rods, sliding rods, and a base plate. The two side plates are fixedly connected around their perimeter by four connecting rods. Two vertical connecting rods are connected by sliding rods. The base plate is slidably mounted on the sliding rods and can be fitted against the connecting rods. The side edges of the base plate are flush with the side edges of the side plates. The device also includes gate assemblies disposed on both sides of the first annular strip assembly. The gate assemblies are inserted into the sedimentation components for partitioning. Several sedimentation components between the gate assemblies are tightly fitted together to form a cuboid sedimentation chamber. Through the integrated design of the annular strip assembly, the sedimentation space is significantly increased, achieving automated wastewater sedimentation and sludge unloading, suitable for regional municipal construction wastewater treatment.

Description

Technical Field

[0001] This invention belongs to the field of wastewater treatment technology, and in particular relates to a municipal wastewater treatment device. Background Technology

[0002] During construction projects, such as replacing sewer pipe networks and building urban roads, a large amount of soil is generated. This excavated soil typically needs to be transported. To avoid soiling city roads, transport vehicles must have their tires and exteriors washed before leaving the construction site. This washing process generates a significant amount of wastewater containing soil, stones, construction waste, and sand. Similarly, during maintenance excavations, rainy weather can cause wastewater to accumulate in the pits, requiring drainage during construction.

[0003] Currently, most construction wastewater is discharged directly into municipal sewage pipes after simple filtration. This only filters out some large particles, while silt and other impurities in the wastewater tend to settle and accumulate, causing blockages in the municipal sewage pipes. If the municipal sewage pipes are blocked, it will affect the rapid discharge of water in the city, easily causing flooding. Municipal workers will need to inspect and dredge the pipes, which will consume a lot of manpower and resources. If the wastewater is discharged directly onto cement roads or green flower beds, it will form a layer of mud on the ground after it seeps into the ground or evaporates. Often, workers will need to use cleaning trucks to clean the roads again, wasting manpower and resources. Summary of the Invention

[0004] In view of the technical problems existing in the background art, the present invention provides a municipal sewage treatment device.

[0005] To achieve the above objectives, the technical solution provided by the present invention is as follows:

[0006] A municipal wastewater treatment device includes a sedimentation unit, the sedimentation unit comprising a first annular belt assembly for conveying wastewater and a plurality of sedimentation components evenly distributed along the length of the first annular belt assembly.

[0007] The sedimentation assembly includes a side plate, connecting rods, sliding rods, and a bottom plate. Two side plates are provided, and the two side plates are fixedly connected around their perimeter by four connecting rods. The two connecting rods in the vertical direction are connected by a sliding rod. The bottom plate is slidably mounted on the sliding rod and can fit against the connecting rods. The side edge of the bottom plate is flush with the side edge of the side plate.

[0008] It also includes gate assemblies disposed on both sides of the first annular strip assembly, the gate assemblies being inserted into the sedimentation assembly for separation; several sedimentation assemblies between the gate assemblies are closely attached to each other to form a cuboid sedimentation chamber.

[0009] When the first annular belt assembly is guided to change the conveying direction, the base plate can slide along the slide bar, thereby moving the base plate to the other end of the side plate.

[0010] Optionally, the municipal wastewater treatment device includes a sludge recovery tank, a sedimentation tank is provided at the upper middle section of the sludge recovery tank, bearing seats are provided on both sides of the sludge recovery tank, a drive shaft is rotatably mounted on the bearing seats, a sprocket is connected to the drive shaft, the first annular belt assembly is a plate chain, the plate chain and the sprocket are connected in cooperation; the side plate and the plate chain are detachably connected, and the annular belt assembly passes through the sedimentation tank.

[0011] Optionally, the gate assembly is fixed on both sides of the sedimentation tank. The gate assembly includes a cylinder and a partition connected to the cylinder for transmission. When the cylinder controls the partition to push downward, the partition slides tightly against the inner wall of the side plate and is set tightly against the bottom plate.

[0012] Optionally, the gate assembly includes a piston rod, the cylinder is connected to the piston rod, limit baffles are respectively provided on both sides of the upper end of the partition, a retaining plate is provided on the piston rod, and the bottom end of the retaining plate is engaged with the bottom end of the limit baffle; a sliding hole is provided in the center of the partition, the piston rod is slidably disposed in the sliding hole, and the retaining plate slides tightly against the side wall of the partition; a transverse hole communicating with the sliding hole is provided in the partition, and several drainage holes I communicating with the transverse hole are evenly distributed on one side of the partition; a drainage hole II is provided inside the piston rod, the drainage hole II is disposed through the bottom end of the piston rod, and the other end is disposed through the outer wall of the upper end of the piston rod.

[0013] Optionally, the card plate is configured in a "U" shape, with a cavity inside the card plate. A spring is sleeved on the piston rod inside the cavity of the card plate, and the bottom end of the spring is set close to the upper end surface of the partition.

[0014] Optionally, the inner wall of the side plate is provided with a limiting groove, and the two ends of the partition plate are connected to the limiting groove.

[0015] Optionally, a sealing ring is provided on the outer wall of the end of the piston rod.

[0016] Optionally, a sludge collection box is provided on the upper surface of the sludge recovery box on both sides of the sedimentation tank. The sludge collection box has a sludge collection trough on the upper part and a clearance groove for the annular strip component to pass through on the lower part. A bearing seat is provided on the upper surface of the sludge collection box. The system also includes a filtration device, which includes a second annular strip component for conveying and a plurality of filter components evenly distributed along the length of the second annular strip component. A mixing box is provided on the upper end of the sedimentation tank. A sewage inlet is provided on the upper end of the mixing box, and the second annular strip component passes through the mixing box.

[0017] Optionally, the bottom of the mixing tank is provided with a clearance groove for the lower section of the second annular strip component to pass through, and the upper section of the second annular strip component is located inside the mixing tank; the side wall of the sedimentation tank is provided with a flocculant tank, which is connected to the mixing tank through a pump and a pipeline; liquid receiving plates are provided on both sides of the mixing tank, and the liquid receiving plates are located at the bottom of the upper section of the second annular strip component, and the liquid receiving plates are connected to the mixing tank.

[0018] Optionally, the sedimentation tank is provided with two diversion plates, which are respectively located above the high section and the low section of the first annular strip component; the diversion plate is provided with a liquid storage tank inside, and the upper part of the diversion plate is provided with a liquid inlet communicating with the liquid outlet tank. The liquid inlet is connected to the mixing tank through a pipe; overflow channels are respectively provided on the high sections on both sides of the liquid storage tank, and the bottom end of the diversion plate is provided with several overflow holes communicating with the overflow channels.

[0019] The present invention has the following advantages and beneficial effects:

[0020] The wastewater treatment device of this invention is used for flocculation and sedimentation of wastewater. The sedimentation equipment includes a first annular belt assembly for conveying wastewater and several sedimentation components evenly distributed along the length of the first annular belt assembly. The sedimentation components between the gate assembly are tightly fitted together to form a cuboid sedimentation chamber. Through structural design of the sedimentation components, when the first annular belt assembly is guided to change its conveying direction, the bottom plate can slide along the slide rod, thereby moving the bottom plate to the other end of the side plate. This means that the sedimentation components on the annular belt assembly can hold wastewater for sedimentation in both the upper and lower sections, greatly increasing the sedimentation space. Thus, the integrated design of the annular belt assembly significantly enhances the sedimentation space. Furthermore, after sedimentation, the sludge is automatically unloaded by moving the first annular belt assembly. This wastewater treatment device has significant effects on municipal construction and regional wastewater treatment, automatically sedimenting wastewater, automatically unloading sedimented sludge, reusing sedimentation components, and significantly improving sedimentation efficiency. Attached Figure Description

[0021] Figure 1 A front view of the wastewater treatment apparatus provided by the present invention;

[0022] Figure 2 A cross-sectional view of the wastewater treatment device provided by the present invention;

[0023] Figure 3 for Figure 1 Top view;

[0024] Figure 4 This is a partial enlarged view of the wastewater treatment device provided by the present invention;

[0025] Figure 5 for Figure 4 A magnified view of a portion of point a.

[0026] Figure 6 A cross-sectional view of the flow divider provided by the present invention;

[0027] Figure 7 This is a structural diagram of the precipitation component provided by the present invention;

[0028] Figure 8 A high-section connection diagram of the precipitation component and the first annular strip component provided by the present invention;

[0029] Figure 9 A low-segment connection diagram of the precipitation component and the first annular strip component provided by the present invention;

[0030] Figure 10 A structural diagram of a sedimentation chamber comprising several sedimentation components and a partition provided by the present invention;

[0031] Figure 11 Structural diagrams of the precipitation component, the first annular strip component, and the partition provided by the present invention;

[0032] Figure 12 A cross-sectional view of the precipitation component, the first annular strip component, and the partition provided by the present invention;

[0033] Figure 13 A schematic diagram of the transmission of the precipitation component and the first annular belt component provided by the present invention;

[0034] Figure 14 A schematic diagram of the sedimentation component and the first annular strip component provided by the present invention being discharged at a high level;

[0035] Figure 15 A schematic diagram of the sedimentation component and the first annular strip component provided by the present invention being discharged at the lower stage;

[0036] Figure 16 A schematic diagram of the filter assembly and the second annular strip assembly provided by the present invention;

[0037] Icons: 1-Sludge recovery box, 11-Bearing seat one, 12-Sludge collection box, 121-Sludge collection trough, 122-Avoidance trough one, 123-Guide roller one, 13-Bearing seat two, 14-Motor one, 15-Motor two, 2-Sedimentation tank, 21-Clear water drain outlet, 22-Guide roller two, 23-Passage trough, 3-Mixing box, 31-Sewage inlet, 32-Receiving plate, 33-Guide roller three, 34-Avoidance trough two, 35-Guide roller four, 36-Outlet pipe, 4-Flocculant tank, 41-Pipeline, 5-Sedimentation equipment, 51-First annular strip assembly, 511-Fixing plate, 52-Sedimentation assembly 521-Side plate, 522-Connecting rod, 523-Slide rod, 524-Base plate, 525-Connecting part, 526-Connecting groove, 527-Limiting groove, 6-Filtering equipment, 61-Second annular strip assembly, 62-Filtering assembly, 621-Fixing seat, 622-Filter plate, 7-Diverter plate, 71-Liquid inlet, 72-Liquid storage tank, 73-Overflow groove, 74-Overflow hole, 8-Gate assembly, 81-Cylinder, 82-Piston rod, 83-Clamping plate, 84-Spring, 85-Drain hole two, 9-Partition plate, 91-Limiting baffle, 92-Drain hole one, 93-Horizontal hole, 94-Slide hole. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, 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 some embodiments of the present invention, but not all embodiments.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] Example 1

[0041] like Figures 1-4 As shown, a municipal wastewater treatment device includes a sedimentation device 5, which includes a first annular belt assembly 51 for conveying and a plurality of sedimentation components 52 evenly distributed along the length of the first annular belt assembly 51.

[0042] Reference Figure 13The first annular belt assembly 51 is connected and driven by two drive wheels. A sedimentation assembly 52 is provided on the first annular belt assembly 51. When the first annular belt assembly 51 moves to a horizontal position, the adjacent sedimentation assemblies 52 are in contact with each other, thereby forming a sedimentation tank along the length of the first annular belt assembly 51. When the first annular belt assembly 51 moves to the two end positions (corner positions), the adjacent sedimentation assemblies 52 begin to rotate / flip, and are staggered by a certain gap.

[0043] like Figure 7 , Figure 8 As shown, the sedimentation assembly 52 includes a side plate 521, a connecting rod 522, a sliding rod 523, and a bottom plate 524. Two side plates 521 are provided, and the two side plates 521 are fixedly connected around their perimeter by four connecting rods 522. The two connecting rods 522 in the vertical direction are connected by a sliding rod 523. The bottom plate 524 is slidably mounted on the sliding rod 523 and can slide and fit against the connecting rods 522 at both ends. The side of the bottom plate 524 is flush with the side of the side plate 521.

[0044] like Figure 4 , Figure 5 As shown, it also includes gate assemblies 8 disposed on both sides of the first annular strip assembly 51. The gate assemblies 8 are used to be inserted into the sedimentation assembly 52 for separation. Several sedimentation assemblies 52 between the gate assemblies 8 are closely attached to each other to form a cuboid sedimentation chamber / sedimentation tank.

[0045] When the first annular belt assembly 51 is guided to change its conveying direction, i.e., the first annular belt assembly 51 is divided into a horizontal conveying upper section and a lower section, the bottom plate 524 can slide along the slide bar 523, thereby moving the bottom plate 524 to the other end of the side plate 521. In other words, regardless of the situation, the bottom plate 524 can slide to the bottom end of the side plate 521, placing the bottom plate 524 at its lowest point, allowing the bottom plate 524 and the side plate 521 to form a sedimentation space. (Refer to...) Figure 8 The upper section of the first annular strip assembly 51, at this time the side plate 521 is horizontally conveyed, the first annular strip assembly 51 is located below the sedimentation assembly 52, and the sedimentation space is enclosed by the bottom plate 524 and the side plate 521; refer to Figure 9 When the first annular strip assembly 51 changes direction, the lower section of the first annular strip assembly 51, at this time the side plate 521 is horizontally conveyed, the relative position of the first annular strip assembly 51 and the sedimentation assembly 52 changes, the first annular strip assembly 51 is located above the sedimentation assembly 52. ​​After this position is reversed, the bottom plate 524 can slide along the slide rod 523 to the bottom of the bottom side plate 521, and the sedimentation space is enclosed by the bottom plate 524 and the side plate 521.

[0046] like Figure 13-15As shown, both the upper section of the first annular strip component 51 (i.e., sedimentation section A in the diagram) and the lower section of the second annular strip component 61 (i.e., sedimentation section B in the diagram) can perform sedimentation operations. In sedimentation section A, the material (sludge) is transported to the left sprocket position, and the sedimentation component 52 automatically rotates at a certain angle, meaning the A feeding section automatically discharges the material. In sedimentation section B, at the right sprocket position, the sedimentation component 52 automatically rotates at a certain angle, meaning the B feeding section discharges the material. The difference is that the A feeding section discharges material directly from the outside, while the B feeding section discharges material directly from the inside.

[0047] like Figure 14 As shown, in the upper section of the first annular belt assembly 51, when rotated to the sprocket position, the sedimentation assembly 52 begins to flip downwards to unload material. As the rotation angle of the sprocket increases, after most or all of the material is unloaded, the sedimentation assembly 52 reaches the lower part of the sprocket. At this time, the bottom plate 524 begins to slide gradually along the slide bar 523 until it reaches the bottom of the side plate 521. After the position of the bottom plate 524 is changed, the lower section of the first annular belt assembly 51 can perform sedimentation operation.

[0048] like Figure 15 As shown, in the lower section of the first annular belt assembly 51, when rotated to the sprocket position, the sedimentation assembly 52 begins to flip upward to unload material. As the rotation angle of the sprocket increases, after most or all of the material is unloaded, the sedimentation assembly 52 reaches the upper part of the sprocket. At this time, the bottom plate 524 begins to slide gradually along the slide bar 523 until it reaches the bottom of the side plate 521. After the position of the bottom plate 524 is changed, the upper section of the first annular belt assembly 51 can perform sedimentation operation.

[0049] During this type of tilting unloading, when the horizontal sludge layer reaches the tilting position, the sludge in adjacent sedimentation components will tear and break apart during the tilting process. Therefore, when tilted to a larger angle, most of the sludge will automatically detach from the bottom plate. However, to enhance the unloading effect and increase the cleanliness of the unloading, auxiliary unloading methods can be used, such as scraping with scrapers to completely remove the sludge. After scraping, if any sludge remains on the sedimentation components, it can be blown clean with compressed air.

[0050] This invention, through structural design of the sedimentation component 52, allows the bottom plate 524 to slide along the slide rod 523 when the first annular belt component 51 is guided to change its conveying direction, thus moving the bottom plate 524 to the other end of the side plate 521. This means the sedimentation component 52 can hold wastewater for sedimentation in both its upper and lower sections, significantly increasing the sedimentation space. The integrated design of the annular belt component greatly enhances the sedimentation capacity. Furthermore, after sedimentation, the sludge is automatically unloaded by moving the first annular belt component 51. This wastewater treatment device has significant effects on municipal construction and regional wastewater treatment, automatically sedimenting wastewater, automatically unloading sedimented sludge, and reusing the sedimentation component 52, thereby greatly improving sedimentation efficiency.

[0051] Example 2

[0052] like Figure 1-4 As shown, the municipal wastewater treatment device of the present invention includes a sludge recovery tank 1, a sedimentation tank 2 is provided at the upper middle section of the sludge recovery tank 1, bearing seats 11 are provided on both sides of the sludge recovery tank 1, and a drive shaft is rotatably mounted on the bearing seats 11. One of the drive shafts is connected to a motor 15 for transmission. A sprocket is connected to the drive shaft, and the first annular belt assembly 51 is a plate chain, which is connected to the sprocket. The sedimentation assembly 52 is fixed to the chain plate. Specifically, as shown... Figure 7-9 As shown, a fixing plate 511 is provided on one side of the plate chain, and connecting portions 525 extend from both ends of the side plate 521. Connecting grooves 526 are provided on the connecting portions 525. The fixing plate 511 is inserted into the connecting grooves 526 and fixedly connected by bolts, welding, or other methods. This fixing method allows the side plate 521 to be stably connected to the plate chain, enabling high-weight load-bearing capacity, since the first annular belt assembly 51 can perform sedimentation operations in both the upper and lower sedimentation components 52 of the horizontal conveying section.

[0053] like Figure 2-5 As shown, the first annular strip component 51 passes through the channel 23 in the sedimentation tank 2. This configuration allows sedimentation to occur within the sedimentation tank 2, with the settled water being directly discharged into the sedimentation tank 2. Meanwhile, the sludge on the first annular strip component 51 and within the sedimentation component 52 is automatically unloaded from the sprockets on both sides as the first annular strip component 51 moves, falling into the sludge recovery tank 1 for automatic collection. Compared to traditional sedimentation tank methods, this approach allows for rapid drainage and automatic unloading and recovery of settled sludge. Unlike traditional sedimentation tanks, which require draining water, cleaning sludge, and rinsing the tank before sludge removal, this method offers a more convenient and efficient overall process.

[0054] The sedimentation tank 2 is provided with a clean water drain outlet 21 at the bottom for discharging clean water. The sedimentation tank 2 is provided with several guide rollers 22 for supporting and guiding the first annular belt assembly 51. The upper guide rollers 22 are set close to the bottom of the first annular belt assembly 51; the lower guide rollers 22 are set close to the bottom of the side plate 521.

[0055] Example 3

[0056] like Figure 4 , Figure 5 As shown, gate assemblies 8 are fixed on both sides of the sedimentation tank 2, with two gate assemblies 8 fixed on each side. Each gate assembly 8 includes a cylinder 81 and a partition 9 connected to and driven by the cylinder 81. When the cylinder 81 controls the partition 9 to push downwards, the partition 9 slides tightly against the inner wall of the side plate 521 and is set tightly against the bottom plate 524. With this design, several sedimentation components 52 between the two partitions 9 together form a long, narrow sedimentation cavity. Wastewater is discharged into the cavity of the sedimentation components 52 to perform sedimentation. In this way, the gate assemblies 8 are controlled to separate the cavity of the sedimentation components 52, thereby creating a sedimentation space.

[0057] like Figure 5 , Figure 10-12 As shown, the gate assembly 8 further includes a piston rod 82, a cylinder 81 connected to the piston rod 82 for transmission, and the cylinder 81 fixed to the side wall of the sedimentation tank 2. Limiting baffles 91 are respectively provided on both sides of the upper end of the partition 9. A retaining plate 83 is provided on the piston rod 82, and the retaining plate 83 is shaped like an inverted "U". The retaining plate 83 has downwardly extending engaging portions on both sides. The retaining plate 83 has an internal cavity, and a spring 84 is sleeved on the piston rod 82 within the internal cavity of the retaining plate 83. The bottom end of the spring 84 is tightly attached to the upper surface of the partition 9. The bottom end of the retaining plate 83 is engaged with the bottom end of the limiting baffle 91. That is, after the retaining plate 83 is installed, it cannot detach from the partition 9 and is limited by the limiting baffle 91, but the retaining plate 83 and the piston rod 82 can slide relative to the partition 9. A sliding hole 94 is provided in the center of the partition 9. The lower section of the piston rod 82 slides within the sliding hole 94, and the retaining plate 83 slides tightly against the side wall of the partition 9. A transverse hole 93 communicating with the sliding hole 94 is provided inside the partition 9. Several drainage holes 92 communicating with the transverse holes 93 are evenly distributed on one side of the partition 9. The height of the drainage holes 92 needs to be designed, such as... Figure 12 The height h in the figure represents the maximum height of the sludge layer after sedimentation. A drain hole 92 is installed at this height to drain as much clear water as possible from the top of the sludge layer. A drain hole 85 is installed inside the piston rod 82, extending from the bottom to the upper outer wall. The outlet of the drain hole 85 at the upper end of the piston rod 82 is connected to the interior of the sedimentation tank 2 via a pipe.

[0058] like Figure 11As shown, in this state, the locking plate 83 hooks the limiting baffle 91, thereby suspending the partition 9 in the air. In this case, the drain hole 92 on the side of the partition 9 and the drain hole 85 inside the piston rod 82 are connected.

[0059] like Figure 12 As shown, in this state, the card plate 83 moves downward along the partition 9, the lower end of the card plate 83 moves away from the limiting baffle 91, and the bottom end of the piston rod 82 reaches the bottom end of the sliding hole 94, the spring 84 is compressed, at this time the second drain hole 85 is blocked, the second drain hole 85 and the first drain hole 92 are not connected, at this time the partition 9 is located at the bottom side, close to the bottom plate 524 to achieve isolation.

[0060] Therefore, refer to Figure 11 , Figure 12 The state changes between them, such as after partition 9 is broken. Figure 12 As shown, when it is necessary to drain the clear water above the sludge layer, it is only necessary to control the cylinder 81 to reciprocate and contract, and control the piston rod 82 to reciprocate upward and reciprocate a certain distance. At the same time, the spring 84 continuously resets and compresses, but cannot drive the partition 9 to move upward and separate from the bottom plate 524. While the piston rod 82 moves upward, it continuously sucks the sliding hole 94, the horizontal hole 93, and the first drain hole 92, eventually generating negative pressure. Using the siphon principle, the clear water is discharged. The specific discharge direction is: the clear water inside the sedimentation component 52, the first drain hole 92, the horizontal hole 93, and the second drain hole 85, and finally discharged through the pipe connected to the external interface of the second drain hole 85. This structure can automatically realize the drainage function using the gate assembly 8. The structure is ingenious. After the drainage is completed, the gate assembly 8 can be completely retracted, and then the sludge settled in the sedimentation component 52 is automatically unloaded by the movement of the first annular belt assembly 51.

[0061] Reference Figure 13-15 After sedimentation and drainage are completed, the first annular belt component 51 moves synchronously with the upper and lower sections (Sedimentation Section A and Sedimentation Section B) to achieve synchronous overturning and unloading. After the sludge material is unloaded, the sedimentation component 52, along with the movement of the first annular belt component 51, re-enters the sedimentation tank 2, and the gate component 8 is lowered again to block the flow, thereby discharging wastewater for sedimentation.

[0062] Reference Figure 11 Furthermore, the inner wall of the side plate 521 is provided with a limiting groove 527, and both ends of the partition 9 are connected to the limiting groove 527. With this design, when drainage is performed, the cylinder 81 reciprocates and contracts, releasing the pressure on the partition 9. To prevent the partition 9 from shifting due to water and silt pressure, the limiting groove 527 is provided to limit the partition 9. This allows the partition 9 to be stably and securely inserted into the side plate 521 for separation.

[0063] Furthermore, a sealing ring is provided on the outer wall of the end of the piston rod 82. The sealing ring increases the sealing performance, so that when the piston rod 82 reciprocates, it can quickly generate negative pressure to drain water.

[0064] Example 4

[0065] like Figure 1-4 As shown, sludge collection boxes 12 are provided on the upper surfaces of sludge recovery boxes 1 on both sides of the sedimentation tank 2. A sludge collection trough 121 is provided on the upper part of the sludge collection box 12, and a clearance groove 122 for the annular belt assembly to pass through is provided on the lower part. A bearing seat 13 is provided on the upper surface of the sludge collection box 12. The system also includes a filtration device 6, which includes a second annular belt assembly 61 for conveying and several filter components 62 evenly distributed along the length of the second annular belt assembly 61. A mixing box 3 is provided at the upper end of the sedimentation tank 2, and a wastewater inlet 31 is provided at the upper end of the mixing box 3. The second annular belt assembly 61 passes through the mixing box 3. Several guide rollers 123 are provided inside the clearance groove 122 to support and guide the second annular belt assembly 61. The second annular belt assembly 61 drives the filter components 62 for mobile filtration, avoiding the technical problem of filter component 62 clogging. Large particles of impurities filtered on the filter components 62 can be automatically unloaded in real time through the movement of the second annular belt assembly 61. Large particles of impurities that have been removed fall into the slag collection tank 121 for collection.

[0066] Furthermore, the bottom of the mixing tank 3 is provided with a clearance groove 34 for the lower section of the second annular strip component 61 to pass through, and the upper section of the second annular strip component 61 passes through the interior of the mixing tank 3; the side wall of the sedimentation tank 2 is provided with a flocculant tank 4, which is connected to the mixing tank 3 via a pump and a pipe 41; liquid receiving plates 32 are provided on both sides of the mixing tank 3, located at the bottom of the upper section of the second annular strip component 61, and are connected to the mixing tank 3. With this configuration, when the second annular strip component 61 moves to filter, the water carried out by the filter component 62 can fall onto the liquid receiving plate 32 and be recycled back into the mixing tank 3, avoiding waste of water resources. During filtration, the flocculant is pumped into the mixing tank 3, first falling onto the filter component 62 to prevent settling, and then, with the falling water, thoroughly mixing the flocculant and wastewater before reaching the sedimentation component 52 below.

[0067] A guide roller 33 is provided on one side of the liquid receiving plate 32 to support and guide the second annular belt assembly 61. Several guide rollers 45 are provided on the inner side of the clearance groove 2 34 to support and guide the second annular belt assembly 61.

[0068] like Figure 16As shown, the filter assembly 62 includes a fixed base 621 and filter plates 622 fixed on the fixed base 621. The filter assembly 62 is composed of several filter plates 622 spliced ​​together. A drive shaft is rotatably mounted on the bearing housing 13, one of which is connected to the motor 14 for transmission. A sprocket is connected to the drive shaft, and the second annular belt assembly 61 is a plate chain, which is connected to the sprocket. Each fixed base 621 is fixed to a corresponding chain plate.

[0069] Example 5

[0070] like Figure 4 , Figure 5 , Figure 7 As shown, the sedimentation tank 2 is equipped with two diversion plates 7, which are respectively positioned above the high and low sections of the first annular strip component 51. A storage tank 72 is installed inside the diversion plate 7, and an inlet 71 connected to the outlet tank is located at the top of the diversion plate 7. The inlet 71 is connected to the mixing tank 3 via an outlet pipe 36. Overflow channels 73 extend from the high sections on both sides of the storage tank 72, and several overflow holes 74 connected to the overflow channels 73 are located at the bottom of the diversion plate 7. With this design, when the high-speed flushing wastewater reaches the mixing tank 3 and mixes with the flocculant, it is first transported to the storage tank 72. Therefore, the storage tank 72 has a certain volume, and the water flow slows down upon reaching the interior before overflowing downwards through the overflow channels 73 and overflow holes 74 to the top of the sedimentation component 52. This design allows the wastewater and flocculant to mix thoroughly and then quickly reduce the flow rate, thereby accelerating the sedimentation rate of the wastewater in the sedimentation component 52.

[0071] Of course, this structure carries the risk of sludge settling in the storage tank 72, so it is necessary to consider how to prevent sludge from settling in the storage tank 72. Generally, a drain outlet can be set at the bottom and side wall of the diversion plate 7 for periodic discharge to prevent sludge accumulation.

[0072] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A municipal sewage treatment apparatus characterised in that : The invention relates to a sludge treatment device, which comprises a sedimentation device, a sludge recovery tank and a filter device. The sedimentation device comprises a first annular belt assembly for conveying and a plurality of sedimentation assemblies evenly distributed along the length direction of the first annular belt assembly. The sedimentation assembly comprises side plates, connecting rods, slide rods and a bottom plate. The side plates are provided with two side plates, and the four sides of the two side plates are fixedly connected by four connecting rods.

2. The municipal sewage treatment device according to claim 1, characterized in that: The two connecting rods in the vertical direction are connected by a slide rod.

3. The municipal sewage treatment device according to claim 2, characterized in that: The bottom plate is slidably arranged on the slide rod and can be arranged in close contact with the connecting rod.

4. The municipal sewage treatment device according to claim 3, characterized in that: The side edges of the bottom plate are flush with the side edges of the side plate.

5. The municipal sewage treatment device according to claim 4, characterized in that: The sludge recovery tank is provided with a sedimentation tank at the upper end of the middle section.

6. The municipal sewage treatment device of claim 4, wherein: The sludge recovery tank is provided with a bearing seat I on both sides.

7. The municipal sewage treatment device of claim 4, wherein: The transmission shaft is rotatably arranged on the bearing seat I.

8. The municipal sewage treatment device of claim 3, wherein: The transmission shaft is connected with a chain wheel. The first annular belt assembly is a plate chain. The side plate and the plate chain are detachably connected. The first annular belt assembly passes through the sedimentation tank. The gate assembly is fixed on both sides of the sedimentation tank. The gate assembly comprises a cylinder and a partition connected with the cylinder. When the cylinder controls the partition to push out downward, the partition slides in close contact with the inner wall of the side plate and is arranged in close contact with the bottom plate. The gate assembly comprises a piston rod. The cylinder is connected with the piston rod. The upper end of the partition is provided with a limiting baffle on both sides. The piston rod is provided with a clamping plate. The clamping plate is clamped at the bottom end of the limiting baffle. The partition is provided with a slide hole in the center. The piston rod is slidably arranged in the slide hole. The partition is provided with a plurality of drainage holes I communicated with the horizontal hole. The piston rod is provided with a drainage hole II. The clamping plate is provided with a cavity. A spring is arranged in the cavity of the clamping plate. The bottom end of the spring is arranged in close contact with the upper end surface of the partition. The inner wall of the side plate is provided with a limiting groove. The limiting groove is connected with the both ends of the partition. The outer wall of the end of the piston rod is provided with a sealing ring. The upper end surface of the sludge recovery tank on both sides of the sedimentation tank is provided with a slag collecting tank. The upper part of the slag collecting tank is provided with a slag collecting groove. The lower part is provided with an avoidance groove I for the first annular belt assembly. The upper end surface of the slag collecting tank is provided with a bearing seat II. The filter device comprises a second annular belt assembly for conveying and a plurality of filter assemblies evenly distributed along the length direction of the second annular belt assembly. The upper end of the sedimentation tank is provided with a distribution tank. The upper end of the distribution tank is provided with a sewage inlet. The second annular belt assembly passes through the distribution tank.

9. The municipal sewage treatment device of claim 8, wherein: The bottom end of the deployment box is provided with an avoiding groove 2 for the low section of the second annular belt-shaped component to pass through, and the high section of the second annular belt-shaped component is arranged inside the deployment box; the sidewall of the sedimentation box is provided with a flocculating agent tank, which is communicated with the pump body and the pipeline and the deployment box; the two sides of the deployment box are respectively provided with liquid receiving plates, which are arranged at the bottom end of the high section of the second annular belt-shaped component and are communicated with the deployment box.

10. The municipal sewage treatment device of claim 8, wherein: Two flow distribution plates are arranged inside the sedimentation box, and the flow distribution plates are arranged above the high section and the low section of the first annular belt-shaped component respectively; the flow distribution plates are provided with liquid storage grooves inside; the upper part of the flow distribution plates is provided with liquid inlet openings which are communicated with the liquid outlet grooves, and the liquid inlet openings are connected with the deployment box through the pipeline; the high sections of the two sides of the liquid storage groove are respectively extended and provided with overflow grooves, and the bottom end of the flow distribution plate is provided with a plurality of overflow holes which are communicated with the overflow grooves.

Images