A sewage treatment sand removal device

Abstract

The utility model relates to sewage treatment technical field discloses a sewage treatment desilting device, including the treatment bin, the treatment bin top fixedly connected with the mixing bin, the treatment bin right -hand member bottom side fixedly connected with the discharge pipe, the treatment bin right -hand member top side fixedly connected with motor no.

Description

Technical Field

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

[0002] Grit chambers are key pretreatment units in wastewater treatment processes. They are mainly used to efficiently remove dense inorganic particles from wastewater, such as sand, gravel, slag, and metal shavings. If these inorganic impurities enter subsequent processes directly without treatment, they will accelerate the mechanical wear of equipment such as pumps, pipes, and valves, cause blockages in the aeration system, significantly reduce wastewater treatment efficiency, and increase maintenance costs. Modern grit chambers achieve automated operation and efficient separation of sand and water. Their treatment effect directly affects the stability and energy consumption level of the entire wastewater treatment system.

[0003] Existing sedimentation systems commonly suffer from the technical flaw of carrying a large amount of water along with the sediment during separation, resulting in the discharge of usable water resources. This incomplete solid-liquid separation not only leads to a serious waste of water resources, but direct discharge also increases the operating costs of wastewater treatment plants. Furthermore, secondary filtration of the sediment-containing sediment significantly reduces system efficiency. This technical bottleneck severely restricts the economic viability and sustainability of sedimentation processes, necessitating the development of new, highly efficient separation technologies to improve water recovery rates without compromising treatment efficiency.

[0004] In response to this technical problem, this application proposes a wastewater treatment sedimentation device. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a wastewater treatment sedimentation device. The specially designed truncated cone inner wall, combined with a spiral plate, guides impurities to the left side. An electric hydraulic rod controls the opening and closing of the closing plate to achieve automatic slag discharge, ensuring efficient solid-liquid separation and allowing the reagent to fully mix and precipitate with the impurities in the wastewater. This structure optimizes the mixing efficiency and ensures the sedimentation effect.

[0006] To achieve the above objectives, the present invention provides the following technical solution:

[0007] A wastewater treatment sedimentation device includes a treatment chamber, a mixing chamber fixedly connected to the top of the treatment chamber, a discharge pipe fixedly connected to the bottom right side of the treatment chamber, a second motor fixedly connected to the top right side of the treatment chamber, a driving end of the second motor connected to a first rolling frame and a second rolling frame via a bevel gear assembly, a conveying pipe fixedly connected to the left side of the mixing chamber, the other end of the conveying pipe fixedly connected to and passing through the left side of the treatment chamber, a first motor fixedly connected to the right side of the mixing chamber, a driving end of the first motor connected to a moving shell via a stirring assembly, the bevel gear assembly including a transmission rod fixedly connected to the right side of the second rolling frame, a transmission pipe fixedly connected to the right side of the first rolling frame, the right end of the transmission pipe rotatably connected to and passing through the right side of the inner wall of the treatment chamber, the outer wall of the transmission rod sleeved on the inner wall of the transmission pipe, a second bevel gear fixedly connected to the right side of both the transmission pipe and the transmission rod, a first bevel gear fixedly connected to the driving end of the second motor, the second bevel gear and the first bevel gear being meshed, a first spiral plate fixedly connected to the inner wall of the first rolling frame, and a second spiral plate fixedly connected to the inner wall of the second rolling frame.

[0008] Furthermore, an electro-hydraulic rod is rotatably connected to the left end of the processing chamber, and a closing plate is rotatably connected to the drive end of the electro-hydraulic rod. The top end of the closing plate is rotatably connected to the outer wall of the left end of the processing chamber.

[0009] Furthermore, the stirring assembly includes a reciprocating lead screw fixedly connected to a drive end of the motor, and a slider is sleeved on the outer wall of the reciprocating lead screw.

[0010] Furthermore, several stirring plates are rotatably connected to both the front and rear ends of the movable shell, and the outer wall of the slider is fixedly connected to the inner wall of the movable shell.

[0011] Furthermore, transmission gear plates are fixedly connected to both the front and rear ends of the inner wall of the mixing chamber, and driven gears are fixedly connected to the opposite ends of the stirring plates. The transmission gear plates and driven gears are meshed together.

[0012] This utility model has the following beneficial effects:

[0013] 1. In this utility model, the mixed water enters the treatment chamber precisely through an electrically controlled valve on the conveying pipe. Motor 2 drives bevel gear 1, which in turn drives bevel gears 2 on both sides, transmitting power to the transmission rod and transmission pipe respectively. This causes the rolling frame 2 and rolling frame 1 to rotate synchronously for spiral filtration. The specially designed inner wall of the truncated cone, in conjunction with the spiral plate, guides impurities to the left side. An electro-hydraulic rod controls the opening and closing of the closing plate to achieve automatic slag discharge, ensuring efficient solid-liquid separation.

[0014] 2. In this utility model, after the sewage and the precipitating agent are mixed in the mixing chamber, the motor is started to drive the reciprocating screw, which drives the moving shell to reciprocate through the slider. The stirring plate on the moving shell meshes with the driven gear and the transmission gear plate to achieve a compound motion of revolution and rotation, so that the agent and the impurities in the sewage are fully mixed and precipitated. This structure optimizes the mixing efficiency and ensures the precipitation effect. Attached Figure Description

[0015] Figure 1 is a perspective view of a wastewater treatment sedimentation device proposed in this utility model;

[0016] Figure 2 is a half-sectional view of the treatment chamber of a wastewater treatment sedimentation device proposed in this utility model;

[0017] Figure 3 is a half-sectional view of the rolling frame of a wastewater treatment sedimentation device proposed in this utility model;

[0018] Figure 4 is a two-half sectional view of the rolling frame of a sewage treatment sedimentation device proposed in this utility model;

[0019] Figure 5 is a half-sectional view of the movable shell of a wastewater treatment sedimentation device proposed in this utility model.

[0020] Legend:

[0021] 1. Processing chamber; 2. Mixing chamber; 3. Conveying pipe; 4. Motor 1; 5. Motor 2; 6. Discharge pipe; 7. Bevel gear 1; 8. Bevel gear 2; 9. Transmission rod; 10. Rolling frame 1; 11. Transmission pipe; 12. Reciprocating screw; 13. Moving shell; 14. Mixing plate; 15. Driven gear; 16. Transmission gear plate;

[0022] 17. Slider; 18. Rolling frame II; 19. Spiral plate I; 20. Spiral plate II; 21. Electro-hydraulic rod; 22. Closing plate. Detailed Implementation

[0023] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0024] Refer to Figures 1 and 3. Figure 4This utility model provides an embodiment of a wastewater treatment sedimentation device, comprising a treatment chamber 1, a mixing chamber 2 fixedly connected to the top of the treatment chamber 1, a discharge pipe 6 fixedly connected to the bottom right side of the treatment chamber 1, a motor 5 fixedly connected to the top right side of the treatment chamber 1, a rolling frame 10 and a rolling frame 18 connected to the driving end of the motor 5 via a bevel gear assembly, the bevel gear assembly including a transmission rod 9 fixedly connected to the right end of the rolling frame 18, a transmission pipe 11 fixedly connected to the right end of the rolling frame 10, the right end of the transmission pipe 11 being rotatably connected to and passing through the right end of the inner wall of the treatment chamber 1, the outer wall of the transmission rod 9 being sleeved on the inner wall of the transmission pipe 11, bevel gears 8 fixedly connected to the right ends of both the transmission pipe 11 and the transmission rod 9, a bevel gear 7 fixedly connected to the driving end of the motor 5, a spiral plate 19 fixedly connected to the inner wall of the rolling frame 10, and a spiral plate 20 fixedly connected to the inner wall of the rolling frame 18. An electric hydraulic rod 21 is rotatably connected to the left end, and a closing plate 22 is rotatably connected to the drive end of the electric hydraulic rod 21. The top of the closing plate 22 is rotatably connected to the outer wall of the left end of the processing chamber 1.

[0025] Specifically: During the operation of the wastewater treatment sedimentation device, the opening of the electrically controlled valve in the conveying pipe 3 is adjusted by the intelligent control system to precisely control the feed flow of sand-containing wastewater, and the solid-liquid mixture is evenly injected into the cylindrical treatment chamber 1. When the start motor 5 is driven, its output shaft drives the bevel gear 7 to rotate at high speed through the coupling. This drive gear forms a 90° orthogonal meshing transmission with the bevel gears 8 arranged symmetrically on both sides, thereby synchronously transmitting power to the transmission systems on the left and right sides. Specifically: the left bevel gear 8 drives the solid transmission rod 9 to rotate through a key connection, while the right bevel gear 8 drives the hollow transmission tube 11 to rotate. The two transmission components are respectively connected by flanges to drive the conical rolling frame 18 and the rolling frame 10 to rotate in the same direction. The surface of the main filter unit composed of the transmission tube 11 and the rolling frame 10 is evenly distributed with spiral plates 19, which are connected to the spiral plates 20 on the inner wall of the rolling frame 18. The staggered spiral channels, under the synergistic effect of centrifugal force and guiding action, gradually push sand and other impurities in the wastewater to the left along the inner wall of the 15° inclined frustum. Simultaneously, the ultrasonic vibrating plate on the inner wall of treatment chamber 1 continuously generates high-frequency vibration, effectively preventing filter screen clogging. When impurities accumulate to a preset weight threshold, the PLC control system automatically activates the electro-hydraulic rod 21, whose piston rod pushes the arc-shaped closing plate 22 to rotate 75° around the hinge axis at a speed of 0.2 m / s. At this time, the slag discharge port on the left side of treatment chamber 1 is fully opened, and the concentrated impurities are quickly discharged under the pushing force of the spiral plate 20 and gravity. The entire slag discharge process can be completed within 12 seconds. This design achieves continuous automated operation of the filtration, concentration, and slag discharge processes through mechatronics control. Its double-spiral structure improves solid-liquid separation efficiency by more than 40%, and the guide channel at the bottom of treatment chamber 1 can recycle the separated water to the equalization tank for reuse.

[0026] Reference Figure 2 As shown in Figure 5, a conveying pipe 3 is fixedly connected to the left end of the mixing chamber 2. The other end of the conveying pipe 3 is fixedly connected to the left end of the processing chamber 1 and passes through it. A motor 4 is fixedly connected to the right end of the mixing chamber 2. The drive end of the motor 4 is connected to a moving shell 13 through a stirring assembly. The stirring assembly includes a reciprocating screw 12 fixedly connected to the drive end of the motor 4. A slider 17 is sleeved on the outer wall of the reciprocating screw 12. Several stirring plates 14 are rotatably connected to both the front and rear ends of the moving shell 13. The outer wall of the slider 17 is fixedly connected to the inner wall of the moving shell 13. A transmission gear plate 16 is fixedly connected to both the front and rear ends of the inner wall of the mixing chamber 2. A driven gear 15 is fixedly connected to the opposite end of each stirring plate 14. The transmission gear plate 16 and the driven gear 15 are meshed together.

[0027] Specifically: In the pretreatment stage of the wastewater treatment sedimentation device, after the wastewater to be treated is injected into the mixing chamber 2 and precipitating agents such as polyaluminum chloride are added, the control system starts motor 4 to drive the precision ball reciprocating screw 12 to rotate at a speed of 30 r / min. The reciprocating screw 12 forms a helical pair transmission with the moving shell 13 through the T-shaped slider 17, causing the moving shell 13 to move horizontally back and forth along the linear guide rail on the inner wall of the mixing chamber 2 at a speed of 0.5 m / s, with a stroke range of ±300 mm. The front end of the moving shell 13 is connected to three sets of adjustable angle stirring plates 14 through a flange. The end of the rotating shaft of each stirring plate 14 is equipped with a driven gear 15. When the equipment is running, the driven gear 15 meshes with the involute transmission gear plate 16 fixed on the top of the mixing chamber 2 to form a gear-rack kinematic pair, forcing the stirring plate 14 to generate a rotational motion of 60 r / min while revolving around the central axis. This composite motion creates a three-dimensional turbulent flow field on the 304 stainless steel blades of the mixing plate 14. Its specially designed airfoil section can generate strong shear force at low speeds, ensuring that the precipitating agent and suspended solids in the wastewater are rapidly mixed within 90 seconds. The mixing efficiency is higher than that of traditional mixing. The flow pattern is further optimized by the guide baffles set on the inner wall of the mixing chamber 2, so that sand and gravel particles with a density of more than 2.65 g / cm³ form dense flocs under the action of the agent, accelerating the gravity sedimentation process. The entire process is controlled by PLC to achieve adaptive adjustment of the agent dosage and stirring intensity, ensuring that the sedimentation effect stably meets the Class A standard requirements of the "Discharge Standard of Pollutants for Municipal Wastewater Treatment Plants" (GB18918-2002).

[0028] Working Principle: When the wastewater to be filtered and the settling agent are mixed in the mixing chamber 2, the starting motor 4 drives the reciprocating screw 12 to rotate. This causes the reciprocating screw 12 to drive the moving housing 13 to move reciprocally via the slider 17. The moving housing 13 then drives the stirring plate 14, causing the driven gear 15 to move along the transmission gear plate 16. The transmission gear plate 16 drives the driven gear 15, causing the stirring plate 14 to rotate. The stirring plate 14 moves and rotates simultaneously, stirring the mixture in the mixing chamber 2. This facilitates uniform mixing of the wastewater and settling agent, ensuring thorough mixing and sedimentation of the agent with impurities and sand in the wastewater. After sedimentation, the mixed water is injected into the treatment chamber 1 through the electrically controlled valve in the conveying pipe 3. When the starting motor 5 rotates the bevel gear 7, it drives the bevel gear 8, which in turn drives the transmission rod 9 on both sides. The transmission pipe 11 rotates, causing the transmission rod 9 to drive the second rolling frame 18 to rotate. The transmission pipe 11 then drives the first rolling frame 10 to rotate, resulting in the spiral filtration of wastewater by the rotation of the transmission pipe 11 and the first rolling frame 10. The filtered impurities, due to the shape of the inner wall of the frustum of the first rolling frame 10 and the second rolling frame 18, and the cooperation of the first spiral plate 19 and the second spiral plate 20, flow to the left side of the treatment chamber 1. When the electric hydraulic rod 21 is activated to drive the closing plate 22 to rotate, the impurities in the treatment chamber 1 can be discharged from the closing plate 22, facilitating the filtration and discharge of filter residue.

[0029] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A wastewater treatment sedimentation device, comprising a treatment chamber (1), characterized in that: The top of the processing chamber (1) is fixedly connected to the mixing chamber (2). The bottom right side of the processing chamber (1) is fixedly connected to the discharge pipe (6). The top right side of the processing chamber (1) is fixedly connected to the motor (5). The driving end of the motor (5) is connected to the rolling frame (10) and the rolling frame (18) through a bevel gear assembly. The left end of the mixing chamber (2) is fixedly connected to the conveying pipe (3). The other end of the conveying pipe (3) is fixedly connected to the left end of the processing chamber (1) and passes through it. The right end of the mixing chamber (2) is fixedly connected to the motor (4). The driving end of the motor (4) is connected to the moving shell (13) through a stirring assembly. The bevel gear assembly includes the one located on the right side of the rolling frame (18). The transmission rod (9) is fixedly connected to the end of the rolling frame (10). The transmission tube (11) is fixedly connected to the right end of the rolling frame (10). The right end of the transmission tube (11) is rotatably connected to the right end of the inner wall of the processing chamber (1) and passes through it. The outer wall of the transmission rod (9) is sleeved on the inner wall of the transmission tube (11). The right ends of the transmission tube (11) and the transmission rod (9) are both fixedly connected to the second bevel gear (8). The driving end of the second motor (5) is fixedly connected to the first bevel gear (7). The second bevel gear (8) and the first bevel gear (7) are meshed. The inner wall of the rolling frame (10) is fixedly connected to the first spiral plate (19). The inner wall of the second rolling frame (18) is fixedly connected to the second spiral plate (20).

2. The wastewater treatment sedimentation device according to claim 1, characterized in that: The left end of the processing chamber (1) is rotatably connected to an electric hydraulic rod (21), the drive end of the electric hydraulic rod (21) is rotatably connected to a closing plate (22), and the top end of the closing plate (22) is rotatably connected to the outer wall of the left end of the processing chamber (1).

3. The wastewater treatment sedimentation device according to claim 1, characterized in that: The stirring assembly includes a reciprocating lead screw (12) fixedly connected to the drive end of motor (4), and a slider (17) is sleeved on the outer wall of the reciprocating lead screw (12).

4. A wastewater treatment sedimentation device according to claim 3, characterized in that: The movable shell (13) is rotatably connected to several stirring plates (14) at both its front and rear ends, and the slider (17) is external to... The wall is fixedly connected to the inner wall of the movable shell (13).

5. A wastewater treatment sedimentation device according to claim 4, characterized in that: The mixing chamber (2) has transmission gear plates (16) fixedly connected to both the front and rear ends of its inner wall, and the stirring plate (14) has driven gears (15) fixedly connected to the opposite ends of its side. The transmission gear plates (16) and driven gears (15) are meshed together.

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