A sedimentation filtration device for wastewater treatment

Abstract

This invention provides a sedimentation and filtration device for wastewater treatment, belonging to the field of wastewater treatment technology. It includes a sedimentation tank, a sewage discharge mechanism, and a power transmission mechanism. The sedimentation tank has a drain outlet and a sewage discharge outlet at its bottom. A filter plate is installed at the drain outlet, and the sewage discharge outlet is equipped with a detachable collection frame and a baffle. The sewage discharge mechanism pushes the sediment through a fixed rod, a U-shaped connecting plate, and a pusher plate. The power transmission mechanism uses water flow to drive a worm gear, which in turn moves the pusher plate via a rotating rod, track, and drum. A telescopic spring ensures resetting. This invention solves the problems of existing equipment where sediment accumulation clogs the filter screen, preventing wastewater discharge and making sediment cleaning at the bottom of the tank inconvenient. Through a water-driven automated cleaning mechanism, the pusher plate pushes the sediment towards the sewage discharge outlet, preventing filter screen clogging and ensuring drainage efficiency. The collection frame and baffle design facilitate sediment removal, simplifying operation and reducing maintenance difficulty.

Description

Technical Field

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

[0002] Wastewater treatment is a crucial link in environmental protection and resource recycling, widely used in industrial, agricultural, and urban sewage treatment. Suspended solids, particulate matter, and organic pollutants in wastewater must be removed through physical, chemical, or biological methods to meet discharge standards or achieve reuse. Sedimentation and filtration equipment is a commonly used core device in wastewater treatment, separating solid particles and liquids in wastewater through gravity sedimentation and filtration to achieve preliminary purification. This equipment typically consists of a sedimentation tank and a filtration system. The sedimentation tank allows suspended particles to settle naturally, while the filtration system further removes fine particles, ensuring the effluent quality meets standards. Sedimentation and filtration equipment is widely used in sewage treatment plants, industrial wastewater treatment stations, and small-scale wastewater treatment facilities due to its simple structure and low operating costs. However, existing equipment has some technical shortcomings in actual operation, affecting its treatment efficiency and ease of maintenance.

[0003] Existing sedimentation filtration equipment suffers from significant technical deficiencies in practical use, particularly in filter outlet design and sediment handling. Many systems have their filter outlets located at the bottom of the sedimentation tank. During drainage, if the wastewater contains a large amount of sediment, it easily accumulates at the filter screen openings due to the water flow. Excessive sediment buildup gradually clogs the filter screen, preventing subsequent wastewater from being discharged properly and severely impacting the equipment's treatment efficiency. Furthermore, because the sediment primarily settles at the bottom of the tank, cleaning is extremely inconvenient. Staff must spend considerable time and effort entering the tank or performing complex operations to remove the sediment, increasing maintenance costs and potentially causing equipment damage or secondary pollution due to improper cleaning. These problems significantly reduce the operational stability and ease of use of sedimentation filtration equipment, necessitating optimized design to improve overall performance. Summary of the Invention

[0004] The purpose of this section is to outline some aspects of embodiments of the present invention and to briefly describe some preferred embodiments. Simplifications or omissions may be made in this section, as well as in the abstract and title of this application, to avoid obscuring the purpose of these documents; however, such simplifications or omissions should not be construed as limiting the scope of the invention.

[0005] In view of the problems existing in the above and / or prior art, the present invention is proposed.

[0006] Therefore, the technical problem to be solved by the present invention is that existing sedimentation and filtration equipment cannot discharge sewage normally due to sediment accumulation clogging the filter screen during drainage, and the sediment is inconvenient to clean.

[0007] To solve the above-mentioned technical problems, the present invention provides the following technical solution: a sedimentation and filtration device for wastewater treatment, comprising,

[0008] A sedimentation tank is provided with a drain outlet on the right side of the bottom end of the sedimentation tank. Sewage outlets are symmetrically provided on the inner bottom wall of the sedimentation tank and on both sides in front of and behind the drain outlet. A filter plate is movably installed at the inlet end of the drain outlet.

[0009] The sewage discharge mechanism includes a fixed rod fixedly installed on the right side of the outer top wall of the sedimentation tank. Two U-shaped connecting plates are slidably connected to the center of the fixed rod. The left ends of the two U-shaped connecting plates extend into the sedimentation tank and are fixedly connected to push plates. The two push plates are positioned close to each other at the lower right corner inside the sedimentation tank, and are located in the middle of the filter plate.

[0010] The power transmission mechanism includes a mounting frame fixedly installed on the outer right wall of the sedimentation tank. A drainage channel is provided at the bottom of the mounting frame, and the input end of the drainage channel is connected to the output end of the drain outlet. A sealing plate is movably installed on the left side inside the drainage channel. Three worm gears are provided on the right side of the sealing plate. The three worm gears are connected through a rotating rod, and the front and rear ends of the rotating rod are rotatably connected to the inner wall of the mounting frame. A power transmission component is driven to the rear end of the rotating rod, and a drive component is driven to the upper end of the power transmission component.

[0011] As a preferred embodiment of the sedimentation and filtration device for wastewater treatment according to the present invention, the sewage discharge mechanism further includes a baffle slidably connected inside the sewage discharge port and a connecting frame fixedly installed at the bottom of the sewage discharge port. A collection frame is slidably connected to the bottom of the connecting frame, and a filter hole is opened at the bottom of the collection frame.

[0012] As a preferred embodiment of the sedimentation and filtration device for wastewater treatment according to the present invention, a receiving cavity is provided on the left side inside the discharge port, a through groove is provided at the bottom end of the receiving cavity, a baffle is slidably connected in the receiving cavity, and a first handle is fixedly installed on the left side of the bottom end of the baffle, and the bottom end of the first handle passes through the through groove and extends to the outside of the sedimentation tank.

[0013] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment according to the present invention, the top of the sealing plate penetrates the inner top wall of the mounting frame and extends to its outside, where a second handle is fixedly connected.

[0014] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment according to the present invention, the power transmission component includes a drive wheel fixedly installed on the outer surface of the rear end of the rotating rod, a track meshing with the outer surface of the drive wheel, and a driven wheel being drivenly connected to the inner side of the top end of the track.

[0015] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment according to the present invention, the driving assembly includes a transmission rod fixedly installed at the center of the driven wheel, a rotating drum fixedly installed at the center of the front end of the transmission rod, a first spiral groove and a second spiral groove symmetrically opened on the front and rear sides of the outer surface of the rotating drum, and a sliding sleeve threadedly connected to the outer surface of the first spiral groove and the second spiral groove, and the top ends of the two sliding sleeves are respectively fixedly connected to the bottom ends of the two U-shaped connecting plates.

[0016] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment described in this invention, the threads of the first spiral groove and the second spiral groove are arranged in opposite directions.

[0017] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment described in this invention, fixing plates are symmetrically installed on the left and right sides of the top of the mounting frame, and the left and right sides of the transmission rod are respectively rotatably connected to the interior of the two fixing plates.

[0018] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment described in this invention, a cavity is provided on the rear side inside the mounting frame, and the bottom ends of the drive wheel and the track are both located within the cavity.

[0019] In a preferred embodiment of the sedimentation and filtration device for wastewater treatment described in this invention, a third handle is fixedly installed on the opposite sides of the two U-shaped connecting plates, and a telescopic spring is sleeved on both the front and rear sides of the outer surface of the fixing rod, with the opposite surfaces of the two telescopic springs respectively fixedly connected to the outer walls of the two U-shaped connecting plates.

[0020] The beneficial effects of this invention are:

[0021] (1) This invention achieves automated sediment removal by designing a power transmission mechanism and a sewage discharge mechanism. During drainage, sewage flows through the drainage channel, driving the worm gear to rotate. Through the transmission of the rotating rod, driving wheel, track, driven wheel, transmission rod, and rotating drum, the two sliding sleeves move in opposite directions. This, in turn, drives the push plate through the connecting plate to push the sediment accumulated on the filter plate towards the sewage outlet, effectively preventing filter screen blockage and ensuring continuous and stable drainage efficiency. In addition, the operator can manually operate the push plate through the third handle to further clean residual sediment, avoiding incomplete cleaning due to insufficient water flow power, and ensuring the reliability of equipment operation and smooth drainage.

[0022] (2) This invention significantly improves the convenience of sediment cleaning by setting a connecting frame and a detachable collection frame at the sewage outlet. After the sediment is pushed into the sewage outlet by the push plate, the operator pulls the baffle into the collection chamber through the first handle to release the seal of the sewage outlet. The sediment falls directly into the collection frame, and the residual sewage is discharged through the filter holes. The collection frame can be quickly pulled out through the slide rail. The operation is simple and does not require entering the tank, reducing the difficulty of maintenance and the risk of secondary pollution. At the same time, the rebound force of the telescopic spring ensures that the push plate and the U-shaped connecting plate automatically reset, preparing for the next use. The overall design improves the practicality and maintenance efficiency of the equipment. Attached Figure Description

[0023] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. Wherein:

[0024] Figure 1 This is a perspective view of the overall structure of the present invention;

[0025] Figure 2 This is a three-dimensional orthographic sectional view of the present invention;

[0026] Figure 3 For the present invention Figure 2 Enlarged structural diagram at point A;

[0027] Figure 4 This is a three-dimensional side sectional view of the present invention;

[0028] Figure 5 This is a top view of the present invention;

[0029] Figure 6 This is a three-dimensional side sectional view of the power transmission mechanism of the present invention;

[0030] Figure 7 This is a three-dimensional enlarged view of the connection between the connecting frame, the collecting frame, and the sedimentation tank of the present invention;

[0031] Figure 8 This is a three-dimensional orthogonal enlarged view of the connection between the connecting frame, the collection frame and the sedimentation tank of the present invention. Detailed Implementation

[0032] To make the above-mentioned objects, features and advantages of the present invention more apparent and understandable, the specific embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] Many specific details are set forth in the following description in order to provide a full understanding of the invention. However, the invention may also be practiced in other ways different from those described herein, and those skilled in the art can make similar extensions without departing from the spirit of the invention. Therefore, the invention is not limited to the specific embodiments disclosed below.

[0034] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure, or characteristic that may be included in at least one implementation of the present invention. The phrase "in one embodiment" appearing in different places in this specification does not necessarily refer to the same embodiment, nor is it a single or selective embodiment that is mutually exclusive with other embodiments.

[0035] Example

[0036] Reference Figures 1 to 8 This invention provides a sedimentation and filtration device for wastewater treatment, aiming to solve the problems in existing sedimentation and filtration devices where sediment accumulation blocks the filter screen, preventing normal wastewater discharge and making sediment cleaning inconvenient. This device belongs to the field of wastewater treatment technology and mainly includes a sedimentation tank 100, a sewage discharge mechanism 200, and a power transmission mechanism 300. By optimizing the filtration and sewage discharge design and combining an automated power transmission mechanism, it effectively improves drainage efficiency and the convenience of sediment cleaning, while reducing maintenance costs. Specific embodiments of this invention are described in detail below.

[0037] Specifically, the sedimentation tank 100 is the core component of this equipment. It adopts a rectangular or container design and can be made of corrosion-resistant stainless steel or high-strength engineering plastics to adapt to the chemical characteristics of different wastewaters. A drain outlet 101 is located on the right side of the bottom of the sedimentation tank 100 to discharge the supernatant after sedimentation. A filter plate 103 is movably installed at the inlet end of the drain outlet 101. The filter plate 103 is made of porous metal mesh or polymer filter membrane, and the pore size is adjustable according to the size of the wastewater particles to effectively intercept fine suspended solids and ensure the quality of the effluent. Two sewage outlets 102 are symmetrically located on the inner bottom wall of the sedimentation tank 100, before and after the drain outlet 101, to discharge the sediment deposited at the bottom of the tank.

[0038] It is worth noting that each discharge outlet 102 has a receiving cavity 104 on its left side. A through groove 105 is formed at the bottom of the receiving cavity 104 to accommodate and slide a baffle 204. The baffle 204 is slidably connected to the receiving cavity 104 via a first handle 207. The bottom end of the first handle 207 passes through the through groove 105 and extends to the outside of the sedimentation tank 100, facilitating manual operation by staff to open or close the discharge outlet 102. To enhance sealing, a rubber sealing ring can be installed between the baffle 204 and the receiving cavity 104 to prevent sewage leakage when the discharge outlet is closed.

[0039] Furthermore, the discharge mechanism 200 is used to push sediment from near the filter plate 103 towards the discharge port 102, solving the problem of sediment accumulation and blockage. This mechanism includes a fixed rod 201 fixedly installed on the right side of the outer top wall of the sedimentation tank 100. Two U-shaped connecting plates 202 are slidably connected to the center of the fixed rod 201. The left end of the U-shaped connecting plates 202 extends into the interior of the sedimentation tank 100, where two push plates 203 are fixedly connected. The push plates 203 are made of corrosion-resistant material with a smooth surface to reduce friction and are tightly fitted to the lower right corner of the sedimentation tank 100, located in the middle of the filter plate 103. The size and shape of the push plates 203 match the cross-section of the bottom of the sedimentation tank to ensure effective sediment pushing. For easy manual operation, a third handle 208 is fixedly installed on the opposite sides of each of the two U-shaped connecting plates 202. Workers can directly drive the push plates 203 by pulling the third handle 208 to further clean residual sediment and improve cleaning thoroughness.

[0040] In addition, telescopic springs 209 are sleeved on the front and rear sides of the outer surface of the fixing rod 201, and the opposite sides of the telescopic springs 209 are fixedly connected to the outer wall of the U-shaped connecting plate 202. When the push plate 203 moves towards the drain outlet 102 under the power of water flow or manual operation, the rebound force of the telescopic springs 209 can reset the U-shaped connecting plate 202 and the push plate 203 to the initial position, preparing for the next use.

[0041] It should also be noted that a connecting frame 205 is fixedly installed at the bottom of the sewage outlet 102, and a collection frame 206 is slidably connected to the bottom of the connecting frame 205. The bottom end of the collection frame 206 is provided with a filter hole 206a, which is used to discharge a small amount of residual sewage in the sediment, while retaining solid sediment for subsequent treatment. The collection frame 206 can be quickly disassembled from the connecting frame 205 via a slide rail, making it convenient for staff to remove and clean.

[0042] Furthermore, the power transmission mechanism 300 drives the push plate 203 to move via water flow power, achieving automatic cleaning of sediment and reducing manual intervention. This mechanism includes a mounting frame 301 fixedly installed on the outer right wall of the sedimentation tank 100. The bottom of the mounting frame 301 has a drainage channel 301a, whose input end connects to the output end of the drain outlet 101, forming a sewage outflow path. A sealing plate 302 is movably installed on the left side inside the drainage channel 301a. The top of the sealing plate 302 penetrates the inner top wall of the mounting frame 301 and is fixedly connected to a second handle 307. By pulling the second handle 307, the operator can remove the sealing plate 302, releasing the seal on the drain outlet 101 and initiating the drainage process. To improve the sealing effect, a silicone sealing gasket can be added to the edge of the sealing plate 302. Three worm gears 303 are installed on the right side inside the drainage channel 301a. The worm gears 303 are connected by a rotating rod 304, whose front and rear ends are rotatably connected to the inner wall of the mounting frame 301, supported by bearings to reduce friction.

[0043] In addition, the rear end of the rotating rod 304 is connected to the power transmission assembly 305. The power transmission assembly 305 includes a drive wheel 305a fixed to the rear end of the rotating rod 304. The outer surface of the drive wheel 305a is engaged with the track 305b. The inner side of the top end of the track 305b is connected to the driven wheel 305c. A cavity 301b is opened on the rear side inside the mounting frame 301 to provide space for the operation of the drive wheel 305a and the track 305b, ensuring smooth transmission.

[0044] Furthermore, the upper end of the power transmission assembly 305 is connected to the drive assembly 306. The drive assembly 306 includes a transmission rod 306a fixed at the center of the driven wheel 305c. The left and right sides of the transmission rod 306a are rotatably connected to the top of the mounting frame 301 via fixing plates 308 to ensure stability. A rotating cylinder 306b is fixedly mounted at the center of the front end of the transmission rod 306a. The outer surface of the rotating cylinder 306b has a first helical groove 306c and a second helical groove 306d symmetrically formed on its front and rear sides, with the threads of the helical grooves rotating in opposite directions. Two sliding sleeves 306e are threadedly connected to the first helical groove 306c and the second helical groove 306d, respectively. The top end of the sliding sleeve 306e is fixedly connected to the bottom end of the U-shaped connecting plate 202.

[0045] When the drum 306b rotates in the forward direction, the two sliding sleeves 306e move horizontally in opposite directions, driving the U-shaped connecting plate 202 and the push plate 203 to move towards the drain port 102; when rotating in the reverse direction, the sliding sleeves 306e move in the same direction and return to their initial positions. To improve transmission efficiency, the drum 306b can be made of high-strength alloy material and the surface can be polished to reduce the sliding resistance of the sliding sleeves 306e.

[0046] The working principle of this equipment is based on the synergistic effect of water flow dynamics and mechanical transmission. After the wastewater in the sedimentation tank 100 has settled naturally, the operator pulls the second handle 307 to move the sealing plate 302 upward, releasing the seal on the drain outlet 101. The wastewater flows out through the drain outlet 101 and the drainage channel 301a. Due to the large amount of wastewater in the sedimentation tank 100, the initial water flow is strong, which drives the bottom sediment to surge towards the filter plate 103 at the drain outlet 101, causing sediment accumulation. As drainage proceeds, the amount of wastewater decreases, and the amount of sediment accumulated at the filter plate 103 increases, which may affect the drainage efficiency. At this time, when the wastewater flows through the drainage channel 301a, it drives the worm gear 303 to rotate. The worm gear 303 drives the drive wheel 305a to rotate through the rotating rod 304. The drive wheel 305a drives the driven wheel 305c to rotate through the track 305b. The driven wheel 305c drives the transmission rod 306a and the rotating drum 306b to rotate. The rotating drum 306b drives the two sliding sleeves 306e to move in opposite directions through the first spiral groove 306c and the second spiral groove 306d. In turn, the U-shaped connecting plate 202 drives the two push plates 203 to move towards the drain outlet 102, squeezing the telescopic spring 209. The push plates 203 push the sediment accumulated on the filter plate 103 towards the drain outlet 102, effectively preventing the filter screen from clogging and ensuring drainage efficiency. After the sediment falls into the drain outlet 102, the operator pulls the baffle 204 into the collection cavity 104 through the first handle 207 to release the seal on the drain outlet 102. The sediment falls into the collection frame 206, and the residual sewage is discharged through the filter hole 206a. The operator can easily pull out the collection frame 206 to handle the sediment. The operation is simple and convenient.

[0047] Additional features and optimized design

[0048] To further enhance the equipment's practicality, operators can manually pull the U-shaped connecting plate 202 via the third handle 208, moving the push plate 203 towards the drain outlet 102 to clean residual sediment, ensuring thorough cleaning and preventing insufficient water flow propulsion. Furthermore, to address different wastewater treatment needs, a removable cover can be installed on the top of the sedimentation tank 100 to prevent foreign objects from entering and facilitate internal inspection. The filter plate 103 can be designed as replaceable, equipped with spare filter plates of different pore sizes to adapt to wastewater treatment tasks with varying particle sizes. To prevent sediment residue in the drain outlet 102, a low-friction coating can be applied to the inner wall of the drain outlet 102 to reduce the probability of sediment adhesion. The elastic coefficient of the telescopic spring 209 can be adjusted according to actual needs to ensure a balance between the reset effect and the pushing resistance.

[0049] Implementation Results and Advantages

[0050] Through the above design, this invention effectively solves the problems of easy clogging of filter screens by sediment and inconvenient cleaning in traditional sedimentation filtration equipment. The pusher plate 203, through a water-driven automated cleaning mechanism, promptly pushes sediment towards the drain outlet 102, preventing filter plate 103 from clogging and ensuring continuous and stable drainage efficiency. The design of the collection frame 206 and baffle 204 simplifies the sediment cleaning process, eliminating the need for personnel to enter the tank, reducing maintenance difficulty and the risk of secondary pollution. The manually operated third handle 208 and the adjustable filter plate 103 further enhance the flexibility and adaptability of the equipment. The overall structure is simple to operate, runs stably, and is suitable for wastewater treatment scenarios of various scales, possessing high practical value and promotion potential.

[0051] It is important to note that the constructions and arrangements of this application shown in several different exemplary embodiments are merely illustrative. Although only a few embodiments are described in detail in this disclosure, those who consult this disclosure will readily understand that many modifications are possible (e.g., changes in the size, dimensions, structure, shape, and proportions of various elements, as well as parameter values ​​(e.g., temperature, pressure, etc.), mounting arrangements, use of materials, color, orientation, etc.) without substantially departing from the novel teachings and advantages of the subject matter described in this application). For example, an element shown as integrally formed may be composed of multiple parts or elements, the position of elements may be inverted or otherwise altered, and the nature or number or position of discrete elements may be changed or altered. Therefore, all such modifications are intended to be included within the scope of the invention. The order or sequence of any process or method steps may be changed or rearranged according to alternative embodiments. In the claims, any "device plus function" clause is intended to cover the structure described herein that performs the function, and not only structurally equivalent but also equivalent in structure. Other substitutions, modifications, alterations, and omissions may be made in the design, operation, and arrangement of the exemplary embodiments without departing from the scope of the invention. Therefore, the present invention is not limited to the specific embodiments, but extends to various modifications that still fall within the scope of the appended claims.

[0052] Furthermore, in order to provide a concise description of exemplary embodiments, not all features of actual embodiments (i.e., those features that are not relevant to the best mode of carrying out the invention as currently considered, or those features that are not relevant to implementing the invention) may be omitted.

[0053] It should be understood that numerous specific implementation decisions can be made during the development of any practical implementation, such as in any engineering or design project. Such development efforts may be complex and time-consuming, but for those skilled in the art who benefit from this disclosure, the development effort will be a routine work of design, manufacturing, and production without requiring much experimentation.

[0054] It should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A sedimentation and filtration device for wastewater treatment, characterized in that: include, A sedimentation tank (100) is provided with a drain outlet (101) on the right side of the bottom end of the sedimentation tank (100). A sewage outlet (102) is symmetrically provided on the inner bottom wall of the sedimentation tank (100) and on the front and rear sides of the drain outlet (101). A filter plate (103) is movably installed at the input end of the drain outlet (101). The sewage discharge mechanism (200) includes a fixed rod (201) fixedly installed on the right side of the outer top wall of the sedimentation tank (100). Two U-shaped connecting plates (202) are slidably connected at the center of the fixed rod (201). The left ends of the two U-shaped connecting plates (202) extend into the sedimentation tank (100) and are fixedly connected to push plates (203). The two push plates (203) are mutually fitted and positioned at the lower right corner inside the sedimentation tank (100), and are located in the middle of the filter plate (103). The power transmission mechanism (300) includes a mounting frame (301) fixedly installed on the outer right side of the sedimentation tank (100). A drainage channel (301a) is provided at the bottom end of the mounting frame (301), and the input end of the drainage channel (301a) is connected to the output end of the drain outlet (101). A sealing plate (302) is movably installed on the left side inside the drainage channel (301a). Three worm gears (303) are provided on the right side of the sealing plate (302). The three worm gears (303) are connected through a rotating rod (304), and the front and rear ends of the rotating rod (304) are rotatably connected to the inner wall of the mounting frame (301). A power transmission component (305) is driven to the rear end of the rotating rod (304), and a drive component (306) is driven to the upper end of the power transmission component (305). The power transmission assembly (305) includes a drive wheel (305a) fixedly installed on the outer surface of the rear end of the rotating rod (304), a track (305b) meshing with the outer surface of the drive wheel (305a), and a driven wheel (305c) drivingly connected to the inner side of the top end of the track (305b). The drive assembly (306) includes a transmission rod (306a) fixedly installed at the center of the driven wheel (305c). A rotating cylinder (306b) is fixedly installed at the center of the front end of the transmission rod (306a). A first spiral groove (306c) and a second spiral groove (306d) are symmetrically opened on the front and rear sides of the outer surface of the rotating cylinder (306b). The outer surfaces of the first spiral groove (306c) and the second spiral groove (306d) are threaded with sliding sleeves (306e). The top ends of the two sliding sleeves (306e) are fixedly connected to the bottom ends of the two U-shaped connecting plates (202) respectively. The first spiral groove (306c) and the second spiral groove (306d) have opposite thread directions.

2. The sedimentation and filtration equipment for wastewater treatment as described in claim 1, characterized in that: The sewage discharge mechanism (200) further includes a baffle (204) slidably connected inside the sewage outlet (102) and a connecting frame (205) fixedly installed at the bottom of the sewage outlet (102). A collection frame (206) is slidably connected to the bottom of the connecting frame (205), and a filter hole (206a) is opened at the bottom of the collection frame (206).

3. The sedimentation and filtration equipment for wastewater treatment as described in claim 2, characterized in that: A receiving cavity (104) is provided on the left side inside the sewage outlet (102). A through groove (105) is provided at the bottom end of the receiving cavity (104). The baffle (204) is slidably connected inside the receiving cavity (104). A first handle (207) is fixedly installed on the left side of the bottom end of the baffle (204). The bottom end of the first handle (207) passes through the through groove (105) and extends to the outside of the sedimentation tank (100).

4. The sedimentation and filtration equipment for wastewater treatment as described in claim 3, characterized in that: The top of the sealing plate (302) extends through the inner top wall of the mounting frame (301) and is fixedly connected to the outside of it with a second handle (307).

5. The sedimentation and filtration equipment for wastewater treatment as described in claim 4, characterized in that: Fixing plates (308) are symmetrically installed on the left and right sides of the top of the mounting frame (301), and the left and right sides of the transmission rod (306a) are respectively rotatably connected to the inside of the two fixing plates (308).

6. The sedimentation and filtration equipment for wastewater treatment as described in claim 5, characterized in that: A cavity (301b) is provided on the rear side inside the mounting frame (301), and the bottom ends of the drive wheel (305a) and the track (305b) are both located in the cavity (301b).

7. The sedimentation and filtration device for wastewater treatment as described in claim 6, characterized in that: A third handle (208) is fixedly installed on the opposite sides of the two U-shaped connecting plates (202). A telescopic spring (209) is sleeved on both the front and rear sides of the outer surface of the fixing rod (201). The opposite sides of the two telescopic springs (209) are fixedly connected to the outer walls of the two U-shaped connecting plates (202).

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