Sewage treatment device

Abstract

The invention discloses a sewage treatment device, a sewage treatment tank comprises a chemical treatment zone, a filter zone and a discharge zone which are arranged in sequence, the chemical treatment zone is provided with a sewage treatment barrel, the sewage treatment barrel is internally provided with a treatment chamber for treating sewage, the filter zone is provided with a filter mechanism, and the discharge zone is provided with a discharge port. The filtering mechanism comprises a filtering net cylinder transversely arranged in the filtering area, the water inlet end of the filtering net cylinder is connected with the sewage treatment barrel, a cleaning assembly parallel to the axis of the filtering net cylinder is arranged on the side wall of one side of the filtering area, and the filtering net cylinder is driven by a driving assembly to rotate in the filtering area; the cleaning assembly can clean the side wall of the filter screen cylinder in the rotating process. According to the sewage treatment device provided by the invention, sewage can be sequentially conveyed to the sewage treatment barrel and the filter screen cylinder, a treatment agent is added into the sewage treatment barrel for chemical treatment so as to realize treatment of waste materials in the sewage, and the sewage can be filtered after passing through the filter screen cylinder.

Description

Technical Field

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

[0002] As is well known, various types of wastewater are generated during industrial and commercial processes, such as wastewater from production workshops, oily wastewater, sump wastewater, domestic wastewater, and rainwater discharge. This industrial and domestic wastewater must be treated, and ideally, the treated water should be recycled. Existing wastewater treatment methods include physical treatment, chemical treatment, and biological treatment. Chemical treatment processes remove organic matter and pathogens from wastewater by adding chemical reagents, such as flocculants and disinfectants. Physical treatment primarily removes suspended solids and particulate matter from wastewater through methods such as filtration and sedimentation.

[0003] For example, the patent with authorization announcement number CN218089164U, entitled "A Wastewater Treatment Device for a Dry-Process Cement Production Line," includes a primary filter box and an adsorption purification box. The primary filter box contains a first filter screen and a cleaning mechanism that matches the inner wall of the primary filter box and the first filter screen. One end of the primary filter box is connected to the adsorption purification box via a connecting pipe, inside which is a second filter screen. The adsorption purification box contains purification components via an mounting plate. Wastewater to be treated can be introduced into the primary filter box through the inlet and filtered by the first filter screen. Solid impurities in the wastewater settle in two chambers inside the primary filter box. The wastewater then enters the adsorption purification box through the connecting pipe, where the second filter screen further filters the solid impurities, improving the filtration effect. At this point, the adsorption plates and filter plates adsorb and purify the wastewater before discharge.

[0004] For example, a patent with authorization announcement number CN210620432U, entitled "A Wastewater Treatment Device for Cement Plants," includes a filter tank with an inlet at the top. Fixing blocks are fixedly connected to the top of the filter tank on both sides of the inlet. A connecting rod is fixedly connected to the bottom wall of each fixing block, and a locking block is fixedly connected to the other end of the connecting rod. A locking groove is provided inside the filter tank. A filter screen is fixedly connected to the end of the connecting rod away from the fixing blocks. An outlet pipe is connected to one side of the filter tank. This patent application, through the combined arrangement of the filter tank, inlet, fixing blocks, connecting rods, locking blocks, locking grooves, filter screen, and adsorption layer, facilitates the cleaning and replacement of the filter screen.

[0005] Existing wastewater treatment equipment generally includes a filtration step to remove solid sediments during wastewater treatment. During this process, solid sediments such as mud and sand in the wastewater adhere to the filter screen after filtration. Over time, this can cause the filter screen to become clogged, affecting the filtration of sediments in the wastewater treatment equipment. Existing technologies require stopping the corresponding process during cleaning to clean or disassemble the filter plates, increasing workload and reducing wastewater treatment efficiency. Summary of the Invention

[0006] The purpose of this invention is to provide a wastewater treatment device to solve the technical problems in related technologies.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A wastewater treatment device includes a wastewater treatment tank, comprising a chemical treatment zone, a filtration zone, and a discharge zone arranged sequentially. The chemical treatment zone is equipped with a wastewater treatment tank, the interior of which is a treatment chamber for treating wastewater. The wastewater treatment tank has a reagent inlet for adding treatment agents to the treatment chamber. The filtration zone is equipped with a filtration mechanism, including a filter screen cylinder horizontally placed in the filtration zone. The inlet end of the filter screen cylinder is connected to the wastewater treatment tank. A drive assembly is provided at the top of the filtration zone, and a cleaning assembly parallel to the axis of the filter screen cylinder is provided on one side wall of the filtration zone. The filter screen cylinder is driven by the drive assembly to rotate within the filtration zone, and the cleaning assembly can clean the side wall of the filter screen cylinder during rotation.

[0009] In the aforementioned wastewater treatment device, a drain pipe is provided at the bottom of the wastewater treatment tank, and the drain pipe is connected to the water inlet end of the filter screen cylinder.

[0010] The aforementioned wastewater treatment device has a first mounting base and a second mounting base provided on the side walls of opposite sides of the filtration zone, and the two ends of the filter screen cylinder are rotatably mounted on the first mounting base and the second mounting base, respectively.

[0011] In the aforementioned wastewater treatment device, the drive assembly includes a drive motor and a drive wheel mounted on the drive motor. An annular rotating component is fixedly mounted on the outer sleeve of the filter screen cylinder, and the annular rotating component is connected to the drive wheel via a transmission belt.

[0012] In the aforementioned wastewater treatment device, the cleaning component includes a cleaning plate arranged parallel to the axis of the filter cylinder, and a cleaning brush is provided on the side of the cleaning plate near the filter cylinder.

[0013] The aforementioned wastewater treatment device further includes a filter frame disposed between the filtration mechanism and the wastewater treatment tank, for performing preliminary filtration treatment on the wastewater transported to the filter screen cylinder.

[0014] The aforementioned wastewater treatment device also includes a stirring mechanism, which is installed inside the wastewater treatment tank and is used to stir and mix the wastewater and treatment agents inside the wastewater treatment tank.

[0015] The aforementioned wastewater treatment device includes a stirring mechanism comprising a rotary drive assembly and a stirring assembly, wherein there are at least three sets of stirring assemblies.

[0016] In the aforementioned wastewater treatment device, each of the stirring components includes a stirring shaft and stirring blades, wherein the stirring blades are arc-shaped blades, straight turbine blades, or propeller-type blades.

[0017] The aforementioned wastewater treatment device further includes a transmission assembly. Each of the stirring assemblies is connected to the rotary drive assembly via the transmission assembly. The stirring assembly is driven by the rotary drive assembly and the transmission assembly and has rotational motion and radial reciprocating motion.

[0018] The beneficial effects of this invention are as follows: The wastewater treatment device provided by this invention includes a wastewater treatment tank comprising a chemical treatment zone, a filtration zone, and a discharge zone arranged sequentially. The chemical treatment zone is equipped with a wastewater treatment tank, and the filtration zone is equipped with a filtration mechanism. The filtration mechanism includes a filter screen cylinder horizontally placed in the filtration zone. The inlet end of the filter screen cylinder is connected to the wastewater treatment tank. A driving component is provided at the top of the filtration zone, and a cleaning component parallel to the axis of the filter screen cylinder is provided on one side wall of the filtration zone. Thus, wastewater can be sequentially transported to the wastewater treatment tank and the filter screen cylinder. Treatment agents are added to the wastewater treatment tank for chemical treatment to complete the treatment of waste in the wastewater. The wastewater can be filtered through the filter screen cylinder, and impurities and flocculent matter in the wastewater are retained in the filter screen cylinder. The driving component can drive the filter screen cylinder to rotate, and the rotating filter screen cylinder can prevent the filtered material from remaining in the filter screen holes. At the same time, the cleaning component can clean the side wall of the filter screen cylinder during the rotation process to prevent the filtered material from clogging the filter screen holes. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this invention. For those skilled in the art, other drawings can be obtained based on these drawings.

[0020] Figure 1A perspective view of a wastewater treatment device provided in an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the internal structure of a sewage treatment tank provided in an embodiment of the present invention;

[0022] Figure 3 A top view of a wastewater treatment tank provided in an embodiment of the present invention;

[0023] Figure 4 This is a schematic diagram of the internal structure of a sewage treatment tank according to another embodiment of the present invention;

[0024] Figure 5 This is a schematic diagram of the structure of a first stirring assembly provided in another embodiment of the present invention;

[0025] Figure 6 This is a schematic diagram of the structure of a second stirring assembly provided in another embodiment of the present invention;

[0026] Figure 7 This is a schematic diagram of the installation of the third stirring assembly provided in another embodiment of the present invention;

[0027] Figure 8 This is a schematic diagram of the structure of a rotary drive assembly and a transmission assembly provided in another embodiment of the present invention;

[0028] Figure 9 One of the structural schematic diagrams of a transmission assembly provided in another embodiment of the present invention;

[0029] Figure 10 This is a second schematic diagram of the structure of a transmission assembly provided in another embodiment of the present invention;

[0030] Figure 11 A bottom view of the mounting plate provided in another embodiment of the present invention;

[0031] Figure 12 This is a top view of a mounting plate provided in another embodiment of the present invention;

[0032] Figure 13 This is a schematic diagram of the structure of a motion adjustment component provided in another embodiment of the present invention.

[0033] Explanation of reference numerals in the attached figures:

[0034] 1. Wastewater treatment tank; 10. Chemical treatment zone; 11. Filtration zone; 12. Discharge zone; 2. Filtration mechanism; 20. Filter screen cylinder; 201. Annular rotating component; 21. Drive assembly; 210. Drive motor; 211. Drive wheel; 212. Transmission belt; 22. Cleaning assembly; 220. Cleaning plate; 221. Cleaning brush; 23. First mounting base; 24. Second mounting base; 25. Filter frame; 3. Wastewater treatment tank; 30. Wastewater treatment chamber; 31. Wastewater inlet; 32. Chemical addition port; 33. Drain pipe; 34. Mounting top plate; 340. Radial opening groove; 341. First radial opening groove; 35. Circumferential groove; 36. Strip-shaped movement groove; 4. Stirring mechanism; 40. First stirring assembly; 400. First stirring shaft; 401. First stirring component; 402. Arc-shaped blade; 41. Second 410. Stirring assembly; 411. Second stirring shaft; 412. Second stirring component; 413. Straight turbine blade; 42. Third stirring assembly; 43. Fourth stirring assembly; 44. Rotary stirring shaft; 45. Rotary stirring component; 46. Propeller blade; 5. Rotary drive assembly; 50. Rotary drive motor; 51. Drive screw; 52. Cylindrical mounting shell; 53. Vertical opening; 54. Guide component; 540. Cylindrical guide shell; 541. Vertical guide groove; 6. Transmission assembly; 60. Motion seat; 61. Rotary gear; 62. Fixed rack; 63. Annular motion component; 630. Inner ring body; 631. Outer ring body; 632. Radial connecting block; 64. Upper hinge seat; 65. Lower hinge seat; 66. Connecting rod; 67. Motion adjustment component; 670. Horizontal top plate; 671. Side plate; 672. Motion rack. Detailed Implementation

[0035] To enable those skilled in the art to better understand the technical solution of the present invention, the following will be described in conjunction with the appendix. Figure 1 To be continued Figure 13 The present invention will now be described in further detail.

[0036] This invention provides a wastewater treatment device, including a wastewater treatment tank 1. The wastewater treatment tank 1 includes a chemical treatment zone 10, a filtration zone 11, and a discharge zone 12 arranged sequentially. The chemical treatment zone 10 is equipped with a wastewater treatment tank 3. The wastewater treatment tank 3 has a treatment chamber for treating wastewater. The wastewater treatment tank 3 is equipped with a chemical inlet 32 ​​for adding treatment agents to the treatment chamber. The filtration zone 11 is equipped with a filtration mechanism 2. The filtration mechanism 2 includes a filter screen cylinder 20 placed horizontally in the filtration zone 11. The inlet end of the filter screen cylinder 20 is connected to the wastewater treatment tank 3. A drive assembly 21 is provided on the top of the filtration zone 11. A cleaning assembly 22 parallel to the axis of the filter screen cylinder 20 is provided on one side wall of the filtration zone 11. The filter screen cylinder 20 can rotate within the filtration zone 11 under the drive of the drive assembly 21. The cleaning assembly 22 can clean the side wall of the filter screen cylinder 20 during the rotation process.

[0037] Specifically, the wastewater treatment tank 1 is used to treat wastewater. The wastewater treatment tank 1 includes a chemical treatment zone 10, a filtration zone 11, and a discharge zone 12 arranged sequentially. These three zones are three independent treatment areas, each performing different treatment operations on the wastewater. The chemical treatment zone 10 is used for chemical treatment of the wastewater. The chemical treatment zone 10 is equipped with a wastewater treatment tank 3, which contains a wastewater treatment chamber 30. The wastewater treatment tank 3 has a wastewater inlet 31 and a chemical dosing port 32. Wastewater requiring treatment can be transported to the wastewater treatment tank 3 through the wastewater inlet 31. It should be noted that other treatments, such as sludge removal, aeration, and sterilization, can be performed before the wastewater is transported to the wastewater treatment tank 3; these are existing technologies and will not be elaborated upon. Chemical agents for wastewater treatment are transported to the treatment chamber through the chemical dosing port 32. A stirring mechanism 4 inside the wastewater treatment tank 3 mixes the wastewater and the treatment agents in the treatment chamber 30 to achieve chemical treatment of the wastewater.

[0038] In this embodiment, the filtration zone 11 is located between the chemical treatment zone 10 and the discharge zone 12. The filtration zone 11 is an independent area that can receive filtered water. The filtration mechanism 2 is used to filter wastewater. The filtration mechanism 2 includes a filter screen cylinder 20 placed horizontally on the filtration zone 11. The filter screen cylinder 20 is a certain distance from the bottom of the filtration zone 11. A drive assembly 21 is provided at the top of the filtration zone 11. The filter screen cylinder 20 is connected to the drive assembly 21 and can rotate within the filtration zone 11 under the drive of the drive assembly 21. A cleaning assembly 22 is provided on one side wall of the filtration zone 11. The cleaning assembly 22 is arranged parallel to the axis of the filter screen cylinder 20. The cleaning assembly 22 can clean the outer wall of the filter screen cylinder 20 to prevent the filter material from clogging the filter screen holes of the filter screen cylinder 20.

[0039] In this embodiment, a drain pipe 33 is provided at the bottom of the sewage treatment tank 3, which is connected to the inlet end of the filter cylinder 20. A connecting pipe is provided on the filtration zone 11, which is connected to the discharge zone 12. Thus, the water treated in the filtration zone 11 can be transported to the discharge zone 12 through the connecting pipe. During use, the sewage to be treated is transported to the sewage treatment tank 3, and a certain amount of treatment agent is added to the sewage treatment tank 3. By fully mixing the treatment agent with the sewage, the waste in the sewage is treated. After the waste is treated in the sewage treatment tank 3, it is transported to the filter cylinder 20 in the filtration zone 11. The filter cylinder 20 filters the sewage, and impurities and flocculent matter in the sewage are retained in the filter cylinder 20. The filtered water is transported to the filtration zone 11 for sedimentation, and the settled water is transported to the discharge zone 12 through the connecting pipe for discharge or recycling.

[0040] This invention provides a wastewater treatment device. The wastewater treatment tank 1 includes a chemical treatment zone 10, a filtration zone 11, and a discharge zone 12 arranged sequentially. The chemical treatment zone 10 is equipped with a wastewater treatment tank 3. The filtration zone 11 is equipped with a filtration mechanism 2, which includes a filter screen cylinder 20 horizontally placed in the filtration zone 11. The inlet end of the filter screen cylinder 20 is connected to the wastewater treatment tank 3. A drive assembly 21 is provided at the top of the filtration zone 11, and a cleaning assembly 22 parallel to the axis of the filter screen cylinder 20 is provided on one side wall of the filtration zone 11. In this way, wastewater can be sequentially transported to the wastewater treatment tank 3. In the wastewater treatment tank 3, chemical treatment agents are added to the filter cylinder 20 to treat the waste in the wastewater. The wastewater can be filtered through the filter cylinder 20, and impurities and flocculent matter in the wastewater are retained in the filter cylinder 20. The filter cylinder 20 can be driven to rotate by the drive component 21. The rotation of the filter cylinder 20 can prevent the filter material from remaining in the filter mesh of the filter cylinder 20. At the same time, the cleaning component 22 can clean the side wall of the filter cylinder 20 during the rotation process to prevent the filter material from clogging the filter mesh.

[0041] In a preferred embodiment of the present invention, a first mounting base 23 and a second mounting base 24 are provided on the sidewalls of opposite sides of the filter zone 11. The two ends of the filter cylinder 20 are rotatably mounted on the first mounting base 23 and the second mounting base 24. A top mounting base is provided at the top of the filter zone 11. A drive assembly 21 is mounted on the top mounting base. The drive assembly 21 includes a drive motor 210 and a drive wheel 211 mounted on the drive motor 210. An annular rotating member 201 is fixedly mounted on the filter cylinder 20. The component 201 is fixedly sleeved on the outer wall of the filter cylinder 20. The annular rotating component 201 is connected to the drive wheel 211 via the transmission belt 212. In use, when the drive motor 210 works, the rotation of the drive wheel 211 drives the filter cylinder 20 to rotate, thereby causing the filter cylinder 20 to rotate within the filtration zone 11. The rotation of the filter cylinder 20 can shake the filter material remaining on the inner wall of the filter cylinder 20, thus assisting in cleaning and preventing the filter material from remaining on the side wall of the filter cylinder 20 and clogging the filter mesh.

[0042] In a preferred embodiment of the present invention, the cleaning component 22 includes a cleaning plate 220, which is installed on the inner wall of the filter zone 11 and parallel to the axis of the filter cylinder 20. A cleaning brush is provided on the side of the cleaning plate 220 near the filter cylinder 20, and the cleaning brush is attached to the filter cylinder 20. Thus, when the filter cylinder 20 rotates, the cleaning brush 221 can clean the outer wall of the filter cylinder 20, preventing the filter cylinder 20 from being blocked on the filter mesh.

[0043] In another embodiment of the present invention, preferably, a filter frame 25 is further included, which is disposed between the filter mechanism 2 and the sewage treatment tank 3, so as to perform preliminary treatment on the water delivered to the filter cylinder 20, filter and block larger debris and flocculent matter in the sewage, so that the larger debris and flocculent matter are retained in the filter frame 25, and prevent the larger debris and flocculent matter from being transported into the filter cylinder 20 and causing blockage of the filter mesh of the filter cylinder 20.

[0044] In another embodiment of the present invention, preferably, the sewage treatment tank 3 is provided with a stirring mechanism 4 inside. The stirring mechanism 4 includes a rotary drive component 5 and a stirring component. To improve the stirring effect, the number of stirring components is 3 or 4. By setting multiple stirring components, the sewage and treatment agent in the sewage treatment tank 3 are stirred and mixed, so that the sewage and treatment agent can be mixed evenly.

[0045] In the embodiments provided by the present invention, preferably, there are four stirring components: a first stirring component 40, a second stirring component 41, a third stirring component 42, and a fourth stirring component 43. The first stirring component 40, the second stirring component 41, the third stirring component 42, and the fourth stirring component 43 are arranged sequentially and at intervals along the circumference inside the sewage treatment tank 3. The first stirring component 40 is arranged corresponding to the sewage inlet 31 and the chemical addition port 32, that is, the first stirring component 40 is located below the sewage inlet 31 and the chemical addition port 32, so that the sewage delivered by the sewage inlet 31 and the treatment agent delivered by the chemical addition port 32 are both within the stirring range of the first stirring component 40.

[0046] The first stirring assembly 40 includes a first stirring shaft 400 and a plurality of first stirring elements 401 disposed on the first stirring shaft 400. The plurality of first stirring elements 401 are arranged sequentially at intervals along the axial direction of the first stirring shaft 400. Each first stirring element 401 includes a cylindrical mounting member and a plurality of arc-shaped blades 402 disposed on the cylindrical mounting member. The cylindrical mounting member can be fixedly mounted on the first stirring shaft 400. The plurality of arc-shaped blades 402 are arranged sequentially at intervals along the circumference of the cylindrical mounting member. The arc-shaped blades 402 are arranged radially inclined along the cylindrical mounting member. Thus, when the first stirring shaft 400 rotates in the forward direction, the rotation of the arc-shaped blades 402 can both stir and mix the sewage and the treatment agent, and provide a first axial pushing force along the axial direction of the first stirring shaft 400, thereby pushing the sewage and the treatment agent in the sewage treatment tank 3 downward.

[0047] In a preferred embodiment of the present invention, the second stirring assembly 41 includes a second stirring shaft 410 and a plurality of second stirring elements 411 disposed on the second stirring shaft 410. The second stirring shaft 410 and the first stirring shaft 400 are located on the same axial section of the wastewater treatment tank 3. The plurality of second stirring elements 411 are arranged sequentially at intervals along the axial direction of the second stirring shaft 410. Each second stirring element 411 includes a blade mounting component and a plurality of straight turbine blades 412 disposed on the blade mounting component. The plurality of straight turbine blades 412 are arranged sequentially at intervals along the circumferential direction of the blade mounting component, and each straight turbine blade 412 is arranged sequentially at intervals along the circumferential direction of the blade mounting component. The turbine blades 412 are installed vertically along the radial direction of the second stirring shaft 410. When the second stirring shaft 410 rotates, the rotation of each straight turbine blade 412 can not only stir and mix the sewage and the treatment agent, but also provide a radial thrust within the sewage treatment tank 3, causing the mixture of sewage and treatment agent to flow radially within the sewage treatment tank 3. In this way, the straight turbine blades 412 and the arc-shaped blades 402 work together to change the flow direction of the sewage and treatment agent, thereby improving the stirring and mixing effect of the sewage and treatment agent.

[0048] In the embodiments provided by the present invention, preferably, the plane containing the central axes of the first stirring shaft 400 and the second stirring shaft 410 of the sewage treatment tank 3 is defined as the first axial section. The third stirring assembly 42 and the fourth stirring assembly 43 are located on opposite sides of the first axial section. The third stirring assembly 42 and the fourth stirring assembly 43 have the same structure, both including a rotating stirring shaft 44 and a plurality of rotating stirring elements 45 disposed on the rotating stirring shaft 44. The plane containing the central axes of the rotating stirring shaft 44 of the third stirring assembly 42 and the rotating stirring shaft 44 of the fourth stirring assembly 43 is also located on the same axial section of the sewage treatment tank 3 (referred to as the second axial section). The second axial section is perpendicular to the first axial section. The plurality of rotating stirring elements 45 are arranged sequentially at intervals along the axial direction of the rotating stirring shaft 44. Each rotating stirring element 45 includes a rotating mounting part and a part disposed on the rotating stirring shaft 44. Multiple propeller-type blades 46 are mounted on the rotating mounting component, which has a cylindrical structure and is fixedly installed on the rotating stirring shaft 44. The multiple propeller-type blades 46 are arranged sequentially and spaced apart along the circumference of the rotating mounting component. When the rotating stirring shaft 44 rotates, the multiple propeller-type blades 46 can not only stir and mix the sewage and treatment agents, but also provide a second axial thrust along the axis of the rotating stirring shaft 44. The second axial thrust is opposite to the first axial thrust. This allows the sewage and treatment agents to move downward under the action of the first axial thrust in the sewage treatment tank 3, and then move upward under the action of the thrust of the second axial rotation. Furthermore, under the action of the radial thrust of the straight turbine blades 412, the sewage and treatment agents can move radially, thereby improving the mixing effect of the sewage and treatment agents.

[0049] If the positions of the first stirring assembly 40, the second stirring assembly 41, the third stirring assembly 42, and the fourth stirring assembly 43 are fixed, then the stirring range of the arc-shaped blade 402, the straight turbine blade 412, and the propeller blade 46 is fixed, which inevitably creates dead zones. The sewage and treatment agents in the dead zones are poorly mixed, thus affecting the sewage treatment effect. Therefore, in another embodiment of the present invention, the rotary drive assembly 5 is connected to the first stirring assembly 40, the second stirring assembly 41, the third stirring assembly 42, and the fourth stirring assembly 43 via the transmission assembly 6. The operation of the rotary drive assembly 5 allows the positions of the first stirring assembly 40, the second stirring assembly 41, the third stirring assembly 42, and the fourth stirring assembly 43 to change. That is, the first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44 can both rotate and reciprocate radially along the radial direction of the sewage treatment tank 3, thereby changing the stirring range of the arc-shaped blade 402, the straight turbine blade 412, and the propeller blade 46 and improving the stirring effect.

[0050] In another embodiment of the present invention, preferably, the rotary drive assembly 5 includes a rotary drive motor 50 and a drive screw 51 connected to the rotary drive motor 50. A mounting top plate 34 is provided on the top of the sewage treatment tank 3. A cylindrical mounting shell 52 is provided on the mounting top plate 34. The cylindrical mounting shell 52 is coaxially arranged with the sewage treatment tank 3. The interior of the cylindrical mounting shell 52 is hollow to form a cylindrical mounting cavity. The top of the cylindrical mounting shell 52 is sealed and provided with a rotary mounting hole for mounting the drive screw 51. The rotary drive motor 50 is installed on the top of the cylindrical mounting shell 52. The drive screw 51 is located in the cylindrical mounting cavity and is coaxially arranged with the cylindrical mounting shell 52.

[0051] In another embodiment of the present invention, preferably, the mounting top plate 34 is provided with four radial opening slots 340, which are equally spaced along the circumference of the sewage treatment tank 3. The transmission assembly 6 includes a motion seat 60 slidably disposed within the radial opening slots 340. The motion seat 60 is driven to reciprocate along the radial opening slots 340. The tops of the first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44 are rotatably mounted within the corresponding motion seats 60. A rotary gear 61 is provided on the top of each of the first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44. The rotary gear 61 is connected to the first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44. 44 is fixedly connected. The rotating gear 61 is located directly below the moving seat 60. A fixed rack 62 is provided on the bottom side wall of the radial opening groove 340. The fixed rack 62 is arranged along the length direction of the radial opening groove 340. The rotating gear 61 meshes with the fixed rack 62. When the moving seat 60 moves along the radial opening groove 340, the first stirring shaft 400, the second stirring shaft 410 and the rotating stirring shaft 44 move along the radial opening groove 340 with the moving seat 60. The rotating gear 61 moves relative to the fixed rack 62. Under the action of the fixed rack 62, the gear rotates, so that the first stirring shaft 400, the second stirring shaft 410 and the rotating stirring shaft 44 rotate while moving along the radial opening groove 340.

[0052] In another embodiment of the present invention, preferably, the transmission assembly 6 further includes an annular moving member 63 that cooperates with the drive screw 51. The annular moving member 63 and the drive screw 51 are connected to form a ball screw structure, that is, the rotation of the drive screw 51 can correspondingly drive the annular moving member 63 to move up and down along the axis of the drive screw 51. The ball screw is prior art and will not be described in detail. An upper hinge seat 64 is provided on the outer side wall of the annular moving member 63. There are four upper hinge seats 64, which are arranged sequentially and spaced apart along the circumference of the annular moving member 63. A lower hinge seat 65 is provided on each moving seat 60. A connecting rod 66 is provided between the upper hinge seat 64 and the lower hinge seat 65. The upper end of the connecting rod 66 is rotatably connected to the upper hinge seat 64, and the lower end of the connecting rod 66 is rotatably connected to the lower hinge seat 65. A plurality of vertical openings 53 are provided on the cylindrical mounting shell 52, and the vertical openings 53 are arranged one-to-one with the connecting rods 66.

[0053] When the rotary drive motor 50 drives the drive screw 51 to rotate in the first direction, the drive ring motion component 63 moves downward along the axis of the drive screw 51. The ring motion component 63 drives each motion seat 60 through the connecting rod 66, thereby causing the motion seats 60 to move in the direction of separation along the radial opening groove 340. The first stirring shaft 400, the second stirring shaft 410 and the rotary stirring shaft 44 move towards the inner wall of the sewage treatment tank 3 along the radial opening groove 340. The first stirring shaft 400, the second stirring shaft 410 and the rotary stirring shaft 44 rotate while moving, causing the arc blade 402, the straight turbine blade 412 and the propeller blade 46 to rotate and stir, and the stirring range changes.

[0054] Conversely, when the annular moving part 63 moves downward to the preset position, the rotary drive motor 50 drives the drive screw 51 to rotate in the second direction (opposite to the first direction), thus driving the annular moving part 63 to move upward along the axis of the drive screw 51. The annular moving part 63 drives each moving seat 60 through the connecting rod 66, thereby causing the moving seats 60 to move towards each other along the radial opening groove 340. The first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44 move towards the center of the sewage treatment tank 3 along the radial opening groove 340. The first stirring shaft 400, the second stirring shaft 410, and the rotary stirring shaft 44 rotate while moving, causing the arc-shaped blade 402, the straight turbine blade 412, and the propeller blade 46 to rotate and stir, and the stirring range gradually changes.

[0055] In another embodiment of the present invention, preferably, a guide member 54 is also included. The guide member 54 includes a cylindrical guide shell 540, which is located inside the cylindrical mounting shell 52. The cylindrical guide shell 540 and the cylindrical mounting shell 52 are coaxially arranged. The bottom of the cylindrical guide shell 540 is fixedly connected to the mounting top plate 34, and the top of the cylindrical guide shell 540 is fixedly connected to the top of the cylindrical mounting shell 52. The cylindrical guide shell 540 is arranged around the drive screw 51. Four vertical guide grooves 541 are provided on the cylindrical guide shell 540. The four vertical guide grooves 541 are arranged sequentially at intervals along the circumference of the cylindrical guide shell 540.

[0056] The annular moving component 63 includes an inner ring body 630 and an outer ring body 631. The inner ring body 630 is connected to the drive screw 51 to form a ball screw. The upper hinge seat 64 is installed on the outer ring body 631. The inner ring body 630 and the outer ring body 631 are connected by radial connecting blocks 632. There are four radial connecting blocks 632, and each of the four radial connecting blocks 632 is arranged in a vertical guide groove 541. Each radial connecting block 632 is located in the vertical guide groove 541, that is, an annular gap is formed between the inner ring body 630 and the outer ring body 631 for the installation of the guide shell. When the drive screw 51 drives the annular moving component 63, each radial connecting block 632 can move up and down along the vertical guide groove 541, thereby guiding and restricting the movement of the annular moving component 63, so that the annular moving component 63 can only move along the axial direction of the drive screw 51.

[0057] During use, since the first stirring component 40 is correspondingly set with the sewage inlet 31 and the agent addition port 32, the sewage inlet 31 may continuously transport sewage, and the agent addition port 32 may continuously add treatment agents. Therefore, the first stirring component 40 needs to continuously stir and mix the sewage transported by the sewage inlet 31 and the agent transported by the agent addition port 32. Therefore, in another embodiment provided by the present invention, a motion adjustment component 67 is provided between the first stirring component 40 and the transmission component 6. The motion adjustment component 67 enables the first stirring component 40 to be fixed when the drive screw 51 drives the annular moving component 63 to move up and down along the axis of the drive screw 51, while the positions of the second stirring component 41, the third stirring component 42 and the fourth stirring component 43 change. That is, in this process, the first stirring shaft 400 only rotates, while the second stirring shaft 410 and the rotating stirring shaft 44 both rotate and move along the direction of the radial opening groove 340.

[0058] In another embodiment of the present invention, preferably, for ease of description, the radial opening groove 340 corresponding to the first stirring shaft 400 is referred to as the first radial opening groove 341. The top of the first stirring shaft 400 is provided with a rotating gear 61 and a motion seat 60, but the motion seat 60 is located at the bottom of the rotating gear 61. The motion seat 60 is fixedly installed in the first radial opening groove 341. The first stirring shaft 400 is rotatably connected to the motion seat 60. The rotating gear 61 is fixedly connected to the first stirring shaft 400. The motion adjustment member 67 includes a strip-shaped moving body slidably disposed in the first radial opening groove 341. The strip-shaped moving body includes a horizontal top plate 670 and two side plates 671 disposed on both sides of the horizontal top plate 670. The lower hinge seat 65 is disposed on the horizontal top plate 670. The lower hinge seat 65 is rotatably connected to the lower end of the connecting rod 66. The two side plates 671 and the horizontal top plate 670 form a U-shaped structure.

[0059] The mounting plate 34 has a circumferential groove 35 arranged around the first radial recessed opening groove 341. The circumferential groove 35 surrounds and communicates with the first radial opening groove 341. The depth of the circumferential groove 35 is less than the depth of the first radial opening groove 341. Two strip-shaped motion grooves 36 parallel to the first radial opening groove 341 are arranged in the circumferential groove 35. The length of the strip-shaped motion grooves 36 is greater than or equal to the length of the first radial opening groove 341. The two strip-shaped motion grooves 36 are located on both sides of the first radial opening groove 341. The two side plates 671 of the strip-shaped motion body are slidably restricted in the two strip-shaped motion grooves 36. A motion rack 672 is arranged on the side wall of one of the side plates 671. The motion rack 672 meshes with the rotating gear 61 on the first stirring shaft 400.

[0060] It should be noted that in another embodiment provided by the present invention, the structure and connection method of the rotating gear 61, the motion seat 60 and the first radial opening groove 341 on the first stirring shaft 400 are changed, but the structure and connection method of the rotating gear 61, the motion seat 60 and the radial opening groove 340 on the second stirring shaft 410 and the rotating stirring shaft 44 are the same as those in another embodiment provided by the present invention.

[0061] When the rotary drive motor 50 drives the drive screw 51 to rotate in the first direction, the drive ring motion component 63 moves downward along the axis of the drive screw 51. The ring motion component 63 drives the motion seat 60 on the second stirring shaft 410 and the rotary stirring shaft 44 through the connecting rod 66, so that the motion seat 60 on the second stirring shaft 410 and the rotary stirring shaft 44 moves in a direction of separation along the radial opening groove 340. The second stirring shaft 410 and the rotary stirring shaft 44 move towards the inner wall of the sewage treatment tank 3 along the radial opening groove 340. The second stirring shaft 410 and the rotary stirring shaft 44 rotate while moving. During this process, the annular moving part 63 drives the moving adjusting part 67 above the first stirring shaft 400 through the connecting rod 66, so that the moving adjusting part 67 moves along the first radial opening groove 341 toward the inner wall of the sewage treatment tank 3. The moving rack 672 moves synchronously with the moving adjusting part 67. At this time, the moving rack 672 moves relative to the rotating gear 61 on the first stirring shaft 400, thereby driving the first stirring shaft 400 to rotate. However, at this time, the position of the first stirring shaft 400 is fixed.

[0062] Conversely, when the rotary drive motor 50 drives the drive screw 51 to rotate in the second direction, the drive ring motion component 63 moves upward along the axis of the drive screw 51. The ring motion component 63 drives the motion seat 60 on the second stirring shaft 410 and the rotary stirring shaft 44 through the connecting rod 66, so that the motion seat 60 on the second stirring shaft 410 and the rotary stirring shaft 44 move towards each other along the radial opening groove 340. The second stirring shaft 410 and the rotary stirring shaft 44 move towards the center of the sewage treatment tank 3 along the radial opening groove 340. The second stirring shaft 410 and the rotary stirring shaft 44 rotate while moving. During this process, the annular moving part 63 drives the moving adjusting part 67 above the first stirring shaft 400 through the connecting rod 66, so that the moving adjusting part 67 moves along the first radial opening groove 341 toward the center of the sewage treatment tank 3. The moving rack 672 moves synchronously with the moving adjusting part 67. At this time, the moving rack 672 moves relative to the rotating gear 61 on the first stirring shaft 400, thereby driving the first stirring shaft 400 to rotate. However, at this time, the position of the first stirring shaft 400 is fixed. Thus, the position of the first stirring shaft 400 remains unchanged throughout the entire process, thereby enabling the sewage delivered by the sewage inlet 31 and the treatment agent delivered by the agent addition port 32 to be stirred and mixed continuously.

[0063] In another embodiment of the present invention, preferably, since the position of the first stirring shaft 400 is fixed during use, the stirring range of the first stirring assembly 40 and the second stirring assembly 41 on the first axial section is smaller than the stirring range of the third stirring assembly 42 and the fourth stirring assembly 43 on the second axial section. Therefore, in another embodiment of the present invention, the connecting rod 66 connected to the moving seat 60 on the second stirring shaft 410 is an automatic telescopic rod. The automatic telescopic rod is synchronously controlled with the drive screw 51. When the rotary drive motor 50 drives the drive screw 51 to rotate in the first direction, the annular moving part 63 moves downward along the axial direction of the drive screw 51. During this process, the length of the automatic telescopic rod gradually increases. Conversely, when the rotary drive motor 50 drives the drive screw 51 to rotate in the second direction, the annular moving part 63 moves upward along the axial direction of the drive screw 51. During this process, the length of the automatic telescopic rod gradually decreases. The advantages of this arrangement are as follows: First, the range of motion of the second stirring shaft 410 is greater than that of the rotating stirring shaft 44, thus compensating for the stirring range formed by the first stirring assembly 40 and the second stirring assembly 41 on the first axial section, so that balanced mixing can be achieved at all positions in the sewage treatment tank; Second, since the arc-shaped blades 402 on the first stirring shaft 400 and the propeller-type blades 46 on the rotating stirring shaft 44 can provide axial thrust when mixing sewage and treatment agents, only the straight turbine blades 412 of the second stirring shaft 410 provide radial thrust when mixing sewage and treatment agents, when the range of motion of the second stirring shaft 410 increases, the range of radial thrust provided by the straight turbine blades 412 increases, which, together with the axial thrust, improves the mixing effect.

[0064] The foregoing has only described certain exemplary embodiments of the present invention by way of illustration. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the foregoing drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A wastewater treatment device, comprising a wastewater treatment tank, characterized in that, The wastewater treatment tank includes a chemical treatment zone, a filtration zone, and a discharge zone arranged sequentially. The chemical treatment zone is equipped with a wastewater treatment tank, and the inside of the wastewater treatment tank is equipped with a treatment chamber for treating wastewater. The wastewater treatment tank is equipped with a chemical inlet for adding treatment agents to the treatment chamber. The filtration zone is equipped with a filtration mechanism, which includes a filter screen cylinder placed horizontally in the filtration zone. The inlet end of the filter screen cylinder is connected to the wastewater treatment tank. A drive assembly is provided at the top of the filtration zone, and a cleaning assembly parallel to the axis of the filter screen cylinder is provided on one side wall of the filtration zone. The filter screen cylinder is driven by the drive assembly and can rotate within the filtration zone. The cleaning assembly can clean the side wall of the filter screen cylinder during rotation.

2. The wastewater treatment device according to claim 1, characterized in that, The bottom of the wastewater treatment tank is equipped with a drain pipe, which is connected to the water inlet end of the filter screen cylinder.

3. The wastewater treatment device according to claim 1, characterized in that, A first mounting base and a second mounting base are provided on the side walls on opposite sides of the filtration zone, and the two ends of the filter screen cylinder are rotatably mounted on the first mounting base and the second mounting base, respectively.

4. The wastewater treatment device according to claim 1, characterized in that, The drive assembly includes a drive motor and a drive wheel mounted on the drive motor. An annular rotating component is fixedly mounted on the filter cylinder, and the annular rotating component is connected to the drive wheel via a transmission belt.

5. The wastewater treatment device according to claim 1, characterized in that, The cleaning assembly includes a cleaning plate arranged parallel to the axis of the filter cylinder, and a cleaning brush is provided on the side of the cleaning plate near the filter cylinder.

6. The wastewater treatment device according to claim 1, characterized in that, It also includes a filter frame, which is disposed between the filtration mechanism and the sewage treatment tank, for performing preliminary filtration treatment on the sewage delivered to the filter screen cylinder.

7. The wastewater treatment device according to claim 1, characterized in that, It also includes a stirring mechanism, which is installed inside the wastewater treatment tank, for stirring and mixing the wastewater and treatment agents inside the wastewater treatment tank.

8. The wastewater treatment device according to claim 7, characterized in that, The stirring mechanism includes a rotary drive assembly and a stirring assembly, and the stirring assembly has at least three sets.

9. The wastewater treatment apparatus according to claim 8, characterized in that, Each of the aforementioned stirring components includes a stirring shaft and stirring blades, wherein the stirring blades are arc-shaped blades, straight turbine blades, or propeller-type blades.

10. The wastewater treatment apparatus according to claim 9, characterized in that, It also includes a transmission assembly, and each of the stirring assemblies is connected to the rotary drive assembly through the transmission assembly. The stirring assembly is driven by the rotary drive assembly and the transmission assembly and has rotational motion and radial reciprocating motion.

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