Integrated solid-liquid separation and medicament recovery device for sewage treatment

Abstract

The application belongs to the technical field of sewage treatment, and particularly relates to an integrated solid-liquid separation and medicament recovery device for sewage treatment, which comprises a protective cover, the upper end of the protective cover is fixedly connected with a water storage tank, the upper end of the water storage tank is fixedly connected with an arc top in a reverse manner, one side of the arc top is provided with a feeding pipe, one side of the upper end of the water storage tank is provided with a water inlet pipe, and the arc top is provided with a slot on one side. The device integrates the functions of primary filtration, layered solid-liquid separation, sludge dispersion and medicament recovery through an integrated structure, effectively solves the problems of low separation efficiency, large medicament loss and easy blockage and winding of traditional sewage treatment equipment. The filter plate is provided with through holes and hooks in front of the through holes to intercept large-particle suspended solids and fiber impurities, so that the subsequent structure is prevented from being blocked. The lifting pipe cooperates with the electric telescopic rod to flexibly adjust the separation interface, realizes accurate layered discharge of clear liquid and sludge, and significantly improves the solid-liquid separation effect and treatment efficiency.

Description

Technical Field

[0001] This invention relates to the field of wastewater treatment technology, and in particular to an integrated solid-liquid separation and reagent recovery device for wastewater treatment. Background Technology

[0002] In wastewater treatment processes, solid-liquid separation and chemical dosing are core components for achieving wastewater purification. Currently, most conventional wastewater treatment equipment adopts a split-type design, with solid-liquid separation, chemical dosing, and sludge treatment processes operating independently. This results in cumbersome processes, large equipment footprints, and high difficulty in on-site installation and maintenance. Furthermore, traditional separation devices can only perform basic solid-liquid separation and cannot recover and reuse added coagulants, flocculants, and other wastewater treatment chemicals, leading to significant chemical waste and directly increasing wastewater treatment operating costs. In addition, the stirring and filtration structures of existing equipment are easily clogged by fibers and flocculent impurities in the wastewater, and lack flexible stratification adjustment functions, resulting in incomplete separation of clarified liquid and sludge, low separation efficiency, and an inability to meet the demands of modern wastewater treatment for high efficiency, energy saving, and low cost.

[0003] To address the above problems, this invention proposes an integrated solid-liquid separation and reagent recovery device for wastewater treatment. Summary of the Invention

[0004] Based on the existing technical problems of wastewater treatment devices, such as large footprint due to split layout, complicated process flow, incomplete solid-liquid separation, high operating costs due to inability to recover reagents, easy entanglement and clogging of stirring and filtering structures, and difficult maintenance, this invention proposes an integrated solid-liquid separation and reagent recovery device for wastewater treatment.

[0005] This invention proposes an integrated solid-liquid separation and reagent recovery device for wastewater treatment, comprising a protective cover, a water storage tank fixedly connected to the upper end of the protective cover, an arc-shaped apex fixedly connected to the upper end of the water storage tank, a feed pipe provided on one side of the arc-shaped apex, a water inlet pipe provided on one side of the upper end of the water storage tank, a slot provided on one side of the arc-shaped apex, the inner wall of the slot extending to the upper water inlet of the water storage tank, a filter plate slidably inserted into the inner wall of the slot, a base provided at the bottom end of the water storage tank, a separation mechanism provided inside the water storage tank, and a dispersing mechanism also provided inside the water storage tank.

[0006] Preferably, the filter plate includes an array of through holes, and the water inlet side of the filter plate is provided with an array of hooks.

[0007] Preferably, the separation mechanism includes an array of electrically operated telescopic rods arranged on the outside of the water storage tank. One side of the electrically operated telescopic rod is provided with a movable telescopic tube adapted to it. The inside of the water storage tank is provided with a lifting tube. A water outlet cavity is provided between the inner wall of the water storage tank and the outer side of the lifting tube. The outer side of the water storage tank is provided with an array of sliding grooves adapted to the movable telescopic tube. The inner wall of the sliding groove is fixedly connected to the inner wall of the water storage tank. The two sides of the movable telescopic tube are respectively slidably and sealingly connected to the inner wall of the sliding groove.

[0008] Preferably, the upper end of the protective cover is provided with an annular groove, the inner wall of the annular groove is provided with an array of L-shaped water outlet holes, and the center of the base is provided with a cylindrical hole that penetrates its upper and lower surfaces.

[0009] Preferably, the dispersing mechanism includes a sealed bearing embedded in the inner wall of the cylindrical hole. An auxiliary frame is fixedly connected to the upper end of the inner ring of the sealed bearing. A hexagonal separating frame is slidably inserted into the inner side of the auxiliary frame. Each long side of the separating frame is provided with a rectangular groove. A filter screen is provided on the inner wall of the rectangular groove. A main rotating shaft is fixedly connected to the upper end of the separating frame. A stirring blade is arranged around the outer side of the main rotating shaft. A connecting rod is provided on one side of the stirring blade. One end of the connecting rod is fixedly connected to the surface of the main rotating shaft.

[0010] Preferably, the lower end of the base is symmetrically provided with drain pipes, one end of the drain pipe is externally connected to an electromagnetic control valve, one end of the electromagnetic control valve is externally connected to a reagent recovery tank, a motor is provided inside the protective cover, the output shaft of the motor is fixedly connected to the inner ring of the sealing bearing located at the lower end of the inner wall of the cylindrical hole, the inner rings of the two sealing bearings are fixedly connected by a fixing pipe, the lower end of the fixing pipe is provided with an array of water outlet grooves, and the inner wall of one end of the drain pipe is fixedly connected to the inner wall of the cylindrical hole.

[0011] Preferably, each contact surface of the lifting pipe is uniformly coated with a sealing and lubricating coating.

[0012] Preferably, the inner wall of the rising pipe is vertically arrayed with turbidity sensors, and the turbidity sensors are externally connected to a control terminal via wires.

[0013] Preferably, a liquid level sensor is fixedly installed on the inner wall of the lifting pipe.

[0014] Preferably, the edges of the stirring blades are rounded and blunted, and the surface is smooth and burr-free.

[0015] The beneficial effects of this invention are as follows:

[0016] Through an integrated structure, this system combines primary filtration, stratified solid-liquid separation, sludge dispersing, and reagent recovery functions, effectively addressing the pain points of traditional wastewater treatment equipment, such as low separation efficiency, high reagent consumption, and clogging. The filter plate uses through-holes and hooks to pre-intercept large suspended solids and fibrous impurities, preventing subsequent clogging. The lifting pipe, combined with an electric telescopic rod, flexibly adjusts the separation interface, achieving precise stratified discharge of clear liquid and sludge, significantly improving solid-liquid separation effect and treatment efficiency. The dispersing mechanism's stirring blades and hexagonal separation frame work together to quickly disperse sludge flocs, achieving efficient separation of reagents and solid impurities with the filter screen. The separated reagents are recycled and reused through pipelines, significantly reducing reagent consumption and operating costs. Simultaneously, the rounded corners of the stirring blades prevent fiber entanglement, and the sealing and lubricating coating of the lifting pipe ensures smooth, leak-free lifting. The equipment operates stably, is easy to maintain, and the integrated design reduces the footprint, simplifies the process flow, and effectively extends the equipment's service life. Overall, it possesses the core advantages of high efficiency, energy saving, and easy maintenance. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention;

[0018] Figure 2 This is a diagram showing the location of the dispersing mechanism in an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention.

[0019] Figure 3 This is a perspective view of the filter plate of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention;

[0020] Figure 4 This invention proposes an integrated solid-liquid separation and reagent recovery device for wastewater treatment. Figure 3 Enlarged view of point A in the middle;

[0021] Figure 5 This is a diagram showing the position of the movable telescopic pipe of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention.

[0022] Figure 6 This is a diagram showing the position of the riser pipe in an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention.

[0023] Figure 7 This is a cross-sectional view of the water storage tank of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention;

[0024] Figure 8 This is a perspective view of the dispersing mechanism of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention;

[0025] Figure 9This is a cross-sectional view of the base of an integrated solid-liquid separation and reagent recovery device for wastewater treatment proposed in this invention.

[0026] In the diagram: 1. Protective cover; 2. Water storage tank; 21. Slot; 22. Base; 3. Arched top; 4. Feed pipe; 5. Water inlet pipe; 6. Filter plate; 60. Through hole; 61. Hook; 7. Separation mechanism; 71. Electric telescopic rod; 72. Movable telescopic tube; 73. Lifting tube; 74. Water outlet chamber; 75. Annular groove; 76. Water outlet hole; 8. Dispersing mechanism; 81. Sealed bearing; 82. Auxiliary frame; 83. Separation frame; 84. Main shaft; 85. Stirring blade; 86. Connecting rod; 87. Motor; 88. Drain pipe. Detailed Implementation

[0027] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0028] Reference Figures 1-9 An integrated solid-liquid separation and reagent recovery device for sewage treatment includes a protective cover 1, a water storage tank 2 fixedly connected to the upper end of the protective cover 1, an arc top 3 fixedly connected to the upper end of the water storage tank 2, a feed pipe 4 provided on one side of the arc top 3, a water inlet pipe 5 provided on one side of the upper end of the water storage tank 2, a slot 21 opened on one side of the arc top 3, the inner wall of the slot 21 extending to the upper water inlet of the water storage tank 2, a filter plate 6 slidably inserted into the inner wall of the slot 21, a base 22 provided at the bottom end of the water storage tank 2, a separation mechanism 7 provided inside the water storage tank 2, and a dispersing mechanism 8 also provided inside the water storage tank 2.

[0029] In this embodiment, the filter plate 6 includes an array of through holes 60, and the water inlet side of the filter plate 6 is provided with an array of hooks 61.

[0030] Specifically, the filter plate 6 is an arc-shaped plate that is slidably inserted into the slot 21 with its water inlet side facing the water inlet pipe 5. The diameter of the through hole 60 is 2-5mm, which is used to intercept large suspended particles. The hook 61 is L-shaped with its tip facing the water inlet direction, which is used to hook fibrous impurities. The filter plate 6 can be pulled out of the slot 21 for cleaning or replacement.

[0031] In this embodiment, the separation mechanism 7 includes an array of electrically operated telescopic rods 71 ​​arranged on the outside of the water storage tank 2. One side of the electrically operated telescopic rods 71 ​​is provided with a movable telescopic tube 72 adapted to it. The inside of the water storage tank 2 is provided with a lifting tube 73. A water outlet cavity 74 is provided between the inner wall of the water storage tank 2 and the outer side of the lifting tube 73. The outer side of the water storage tank 2 is provided with an array of sliding grooves adapted to the movable telescopic tube 72. The inner wall of the sliding groove is fixedly connected to the inner wall of the water storage tank 2. The two sides of the movable telescopic tube 72 are respectively sealed and slidably connected to the inner wall of the sliding groove.

[0032] Specifically, the electric telescopic rod 71 is fixed to the outer wall of the water storage tank 2, and its extended end is fixedly connected to the outer end of the movable telescopic tube 72. When the electric telescopic rod 71 extends or shortens, it drives the lifting tube 73 to rise or fall through the movable telescopic tube 72, thereby changing the corresponding height position of each lifting tube 73.

[0033] In this embodiment, the upper end of the protective cover 1 is provided with an annular groove 75, the inner wall of the annular groove 75 is provided with an array of L-shaped water outlet holes 76, and the center of the base 22 is provided with a cylindrical hole that penetrates its upper and lower surfaces.

[0034] Specifically, the annular groove 75 is located on the upper surface of the protective cover 1 and communicates with the bottom of the water outlet chamber 74. One end of the L-shaped water outlet 76 opens to the bottom of the annular groove 75, and the other end opens to the side of the protective cover 1, for exporting the separated clean water. The cylindrical hole penetrates the center of the base 22 for installing the dispersing mechanism 8 and serves as a channel for draining the liquid phase water.

[0035] In this embodiment, the dispersing mechanism 8 includes a sealed bearing 81 embedded in the inner wall of a cylindrical hole. An auxiliary frame 82 is fixedly connected to the upper end of the inner ring of the sealed bearing 81. A hexagonal separating frame 83 is slidably inserted into the inner side of the auxiliary frame 82. Each long side of the separating frame 83 is provided with a rectangular groove. A filter screen is provided on the inner wall of the rectangular groove. A main rotating shaft 84 is fixedly connected to the upper end of the separating frame 83. A stirring blade 85 is arranged around the outer side of the main rotating shaft 84. A connecting rod 86 is provided on one side of the stirring blade 85. One end of the connecting rod 86 is fixedly connected to the surface of the main rotating shaft 84.

[0036] Specifically, the auxiliary frame 82 has a disc with a hexagonal insertion hole at its center on top, and an array of fixed columns at its bottom for support. The fixed columns are fixed to the inner ring of the sealed bearing 81. The lower end of the hexagonal separation frame 83 is slidably inserted into the insertion hole and can rotate synchronously with the auxiliary frame 82. Each side of the separation frame 83 has a rectangular groove with a stainless steel filter screen. The filter screen has a pore size of 0.1-0.5mm. The stirring blade 85 is spiral-shaped and fixed to the main rotating shaft 84 by a connecting rod 86. It is used to agitate the sewage and assist in solid-liquid separation.

[0037] In this embodiment, drain pipes 88 are symmetrically arranged at the lower end of the base 22. One end of the drain pipe 88 is connected to an electromagnetic control valve, and the other end of the electromagnetic control valve is connected to a reagent recovery tank. A motor 87 is arranged inside the protective cover 1. The output shaft of the motor 87 is fixedly connected to the inner ring of the sealing bearing 81 located at the lower end of the inner wall of the cylindrical hole. The inner rings of the two sealing bearings 81 are fixedly connected by a fixing pipe. A water outlet groove is arranged in an array at the lower end of the fixing pipe. The inner wall of one end of the drain pipe 88 is fixedly connected to the inner wall of the cylindrical hole.

[0038] Specifically, motor 87 is a waterproof servo motor, and its output shaft is fixed to the inner ring of the sealed bearing 81 below through a coupling. The fixing tube is a vertically arranged hollow round tube, and its upper and lower ends are respectively fixed to the inner rings of two sealed bearings 81. Multiple water outlet grooves are opened at the lower end of the fixing tube, so that the water separated in the separating frame 83 can flow into the interior of the fixing tube, then enter the bottom of the cylindrical hole through the water outlet groove, and finally be discharged from the drain pipe 88. The electromagnetic control valve is used to control the recovery of wastewater containing chemicals.

[0039] In this embodiment, each contact surface of the rising pipe 73 is uniformly coated with a sealing and lubricating coating.

[0040] Specifically, the lifting pipe 73 is composed of multiple interconnected pipe sections. The outer wall of each pipe section is coated with polytetrafluoroethylene, and rubber sealing rings are provided between adjacent pipe sections to ensure sealing and lubrication during telescopic movement.

[0041] In this embodiment, a turbidity sensor is arranged in a vertical array on the inner wall of the rising pipe 73, and the turbidity sensor is connected to an external control terminal via a wire.

[0042] Specifically, multiple turbidity sensor arrays are set up to detect the turbidity value of sewage at different heights in real time and transmit the signals to the control terminal so as to judge the effect of solid-liquid separation and control the timing of the operation of the electric telescopic rod 71.

[0043] In this embodiment, a liquid level sensor is fixedly installed on the inner wall of the riser pipe 73.

[0044] Specifically, the liquid level sensor is an ultrasonic or float type, installed on the inner wall of the riser pipe 73 near the upper end, used to monitor the liquid level in the water storage tank 2. When the liquid level reaches the set value, the control terminal starts the motor 87 and the separation mechanism 7, and at the same time controls the feed pipe 4 to add the reagent.

[0045] In this embodiment, the edges of the stirring blades 85 are rounded and blunted, and the surface is smooth and burr-free.

[0046] Specifically, all outer edges and corners of the mixing blade 85 are rounded and chamfered to completely remove sharp edges and burrs, and the surface is finely polished to a smooth state. When rotating and mixing and breaking up sludge flocs, it can avoid snagging fibrous impurities, prevent the mixing structure from tangling and clogging the material, reduce water flow shear resistance, reduce the adhesion and accumulation of sludge on the blade surface, facilitate the later cleaning and maintenance of the equipment, and ensure the long-term stable operation of the dispersing mechanism.

[0047] Reference Figures 1-9 A recovery method for an integrated solid-liquid separation and reagent recovery device for wastewater treatment, comprising the following specific steps:

[0048] Step 1: Wastewater enters the storage tank 2 through the inlet pipe 5. It first passes through the filter plate 6, through the through hole 60 and the hook 61 to intercept and hook large particles and fibers. The coarsely filtered wastewater falls into the riser pipe 73.

[0049] Step 2: Coagulant, flocculant, and pH adjuster are sequentially added into the riser pipe 73 through the feed pipe 4. The motor 87 is started to drive the stirring blade 85 to rotate at low speed, so that the agents and sewage are fully mixed and reacted. Colloidal particles and suspended solids in the sewage coagulate into flocs under chemical action. At the same time, the control terminal adjusts the amount of pH adjuster added according to the feedback signals from the turbidity sensor and the liquid level sensor, so that the pH value of the sewage is maintained in the neutral range of 6.5-7.5. After the reaction is completed, the control terminal drives the electric telescopic rod 71 to push the movable telescopic pipe 72 from bottom to top according to the turbidity value detected by the turbidity sensor, so that the riser pipe 73 is lowered. The upper clarified liquid falls into the annular groove 75 through the outlet chamber 74 and is discharged through the L-shaped outlet hole 76.

[0050] Step 3: After the upper clear liquid is discharged, the motor 87 rotates at an increased speed. The hexagonal separation frame 83 and stirring blade 85 in the dispersing mechanism 8 generate centrifugal force to disperse the flocs. The electromagnetic control valve opens, and the high-turbidity concentrated liquid containing residual agents in the lower layer is discharged through the filter screen. After passing through the fixed pipe, it is discharged into the agent recovery tank through the drain pipe 88, realizing agent recovery and solid-liquid separation.

[0051] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An integrated solid-liquid separation and reagent recovery device for wastewater treatment, characterized in that: The device includes a protective cover (1), a water storage tank (2) is fixedly connected to the upper end of the protective cover (1), an arc top (3) is fixedly connected to the upper end of the water storage tank (2) with an upside-down top, a feed pipe (4) is provided on one side of the arc top (3), a water inlet pipe (5) is provided on one side of the upper end of the water storage tank (2), a slot (21) is provided on one side of the arc top (3), the inner wall of the slot (21) extends to the upper water inlet of the water storage tank (2), a filter plate (6) is slidably inserted into the inner wall of the slot (21), a base (22) is provided at the bottom end of the water storage tank (2), a separation mechanism (7) is provided inside the water storage tank (2), and a dispersing mechanism (8) is also provided inside the water storage tank (2).

2. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 1, characterized in that: The filter plate (6) includes an array of through holes (60), and the water inlet side of the filter plate (6) is provided with an array of hooks (61).

3. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 1, characterized in that: The separation mechanism (7) includes an electric telescopic rod (71) arranged in an array on the outside of the water storage tank (2). A movable telescopic tube (72) adapted to the electric telescopic rod (71) is provided on one side. A lifting tube (73) is provided inside the water storage tank (2). A water outlet cavity (74) is provided between the inner wall of the water storage tank (2) and the outer side of the lifting tube (73). A sliding groove adapted to the movable telescopic tube (72) is arranged in an array on the outer side of the water storage tank (2). The inner wall of the sliding groove is fixedly connected to the inner wall of the water storage tank (2). The two sides of the movable telescopic tube (72) are respectively sealed and slidably connected to the inner wall of the sliding groove.

4. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 3, characterized in that: The upper end of the protective cover (1) is provided with an annular groove (75), and the inner wall of the annular groove (75) is provided with an array of L-shaped water outlet holes (76). The center of the base (22) is provided with a cylindrical hole that penetrates its upper and lower surfaces.

5. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 4, characterized in that: The dispersing mechanism (8) includes a sealed bearing (81) embedded in the inner wall of the cylindrical hole. An auxiliary frame (82) is fixedly connected to the upper end of the inner ring of the sealed bearing (81). A hexagonal separation frame (83) is slidably inserted into the inner side of the auxiliary frame (82). Each long side of the separation frame (83) is provided with a rectangular groove. A filter screen is provided on the inner wall of the rectangular groove. A main rotating shaft (84) is fixedly connected to the upper end of the separation frame (83). A stirring blade (85) is arranged around the outer side of the main rotating shaft (84). A connecting rod (86) is provided on one side of the stirring blade (85). One end of the connecting rod (86) is fixedly connected to the surface of the main rotating shaft (84).

6. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 5, characterized in that: The lower end of the base (22) is symmetrically provided with drain pipes (88). One end of the drain pipe (88) is connected to an electromagnetic control valve. One end of the electromagnetic control valve is connected to a medicine recovery box. The inside of the protective cover (1) is provided with a motor (87). The output shaft of the motor (87) is fixedly connected to the inner ring of the sealing bearing (81) located at the lower end of the inner wall of the cylindrical hole. The inner rings of the two sealing bearings (81) are fixedly connected by a fixing pipe. The lower end of the fixing pipe is provided with a water outlet groove. One end of the inner wall of the drain pipe (88) is fixedly connected to the inner wall of the cylindrical hole.

7. An integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 6, characterized in that: Each contact surface of the lifting pipe (73) is uniformly coated with a sealing and lubricating coating.

8. The integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 7, characterized in that: The inner wall of the rising pipe (73) is vertically arrayed with turbidity sensors, which are connected to a control terminal via wires.

9. An integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 8, characterized in that: A liquid level sensor is fixedly installed on the inner wall of the lifting pipe (73).

10. An integrated solid-liquid separation and reagent recovery device for wastewater treatment according to claim 9, characterized in that: The edges of the stirring blades (85) are all rounded and blunted, and the surface is smooth and burr-free.

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