A plant for the treatment of sewage

Abstract

This invention belongs to the field of wastewater treatment technology, specifically relating to a factory wastewater treatment device. It includes a base and a sedimentation tank mounted on the base. A collection tank is connected to the lower end of the sedimentation tank. A sedimentation mechanism is installed inside the sedimentation tank, comprising multiple linearly arrayed and inclined corrugated plates. Extension arms are fixedly mounted on both sides of the corrugated plates, with slanted openings at the top of the extension arms. This factory wastewater treatment device uses linearly arrayed, inclined corrugated plates instead of traditional honeycomb inclined tubes. The open flow channel fundamentally avoids the clogging problem caused by fibrous debris, and the larger specific surface area effectively improves sedimentation efficiency. When the C-shaped plate moves with the scraper, it automatically squeezes the slanted openings at the top of the extension arms, pushing the corrugated plate to slide along the mounting frame and stretching the spring. After detachment, the spring rebounds, causing the corrugated plate to generate high-frequency, small-amplitude vibrations. The extension length of the C-shaped plate can be flexibly adjusted by rotating the screw on the crossbeam, thereby precisely controlling the vibration amplitude of the corrugated plate.

Description

Technical Field

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

[0002] In the wastewater treatment process of acid-base neutralization—coagulation—flocculation—sedimentation—discharge meeting standards, the inclined tube sedimentation tank serves as the core solid-liquid separation unit, receiving the mixed wastewater containing flocs formed after upstream chemical flocculation. Utilizing the principle of shallow pool sedimentation and the diversion and coagulation effects of the inclined tubes, the inclined tube sedimentation tank significantly shortens the floc settling distance, improves settling efficiency, and effectively intercepts suspended particulate matter, colloids, and flocculent flocculation in the water. After rapid sludge-water separation in the inclined tube zone, the supernatant flows by gravity into subsequent processes for discharge meeting standards, while the settled sludge is periodically treated.

[0003] Traditional inclined tube sedimentation tanks typically use honeycomb inclined tubes to enclose hexagonal flow channels, but these are easily clogged by debris such as fibers, hair, and silt in the wastewater. Once clogged, production must be stopped and water drained for manual cleaning, which is labor-intensive, poses high safety risks, and seriously affects the continuity of production. Summary of the Invention

[0004] The purpose of this invention is to provide a factory wastewater treatment device that is easy to clean in order to solve the above-mentioned problems.

[0005] The present invention achieves the above objectives through the following technical solutions: A factory wastewater treatment device includes a base and a sedimentation tank mounted on the base. A collection tank is connected to the lower end of the sedimentation tank. A sedimentation mechanism is installed inside the sedimentation tank. The sedimentation mechanism includes multiple linearly arrayed and inclined corrugated plates. Extension arms are fixedly mounted on both sides of the corrugated plates. An oblique opening is provided at the top of each extension arm. A spring connects the extension arm to the inner wall of the sedimentation tank. A reciprocating conveying mechanism is fixed on the sedimentation tank. Multiple scrapers are connected to the reciprocating conveying mechanism. Each scraper includes a mounting plate. A C-shaped plate is slidably mounted on the mounting plate. The C-shaped plate is dynamically squeezed against the oblique opening.

[0006] As a further optimization of the present invention, the sedimentation mechanism further includes multiple mounting frames, which are fixedly installed in the sedimentation tank, and the wave plate is slidably installed on the mounting frames, with a vertical extension plate provided at the upper end of the wave plate.

[0007] As a further optimization of the present invention, the scraper further includes a mounting plate, which is fixedly mounted on the reciprocating conveying mechanism. A clamping strip is fixedly mounted on the mounting plate, and an adhesive strip is fixedly mounted between the clamping strip and the mounting plate. A crossbeam is fixedly mounted on the mounting plate, and a screw is threaded onto the crossbeam, which is connected to a C-shaped plate.

[0008] As a further optimization of the present invention, the C-shaped plate includes a horizontal bar, which is rotatably connected to a screw. Extrusion members are fixedly provided at both ends of the horizontal bar, and the extrusion members are slidably disposed between the adhesive strip and the mounting plate.

[0009] As a further optimization of the present invention, the reciprocating conveying mechanism includes a truss, which is fixedly mounted on the sedimentation tank. Horizontal shafts are rotatably mounted at both ends of the truss. A servo motor is fixedly mounted on the truss. The servo motor is fixedly connected to one of the horizontal shafts. Sprockets are fixedly mounted at both ends of the horizontal shaft. A chain is sleeved on the sprocket on the same side. Both ends of the mounting plate are fixedly mounted on the chain.

[0010] As a further optimization of the present invention, the two ends of the spring are rotatably connected to the extension arm and the sedimentation tank, respectively.

[0011] As a further optimization of the present invention, a baffle is fixedly installed in the sedimentation tank, the baffle is connected to the collection tank, and a sewage pipe is connected to the collection tank.

[0012] As a further optimization of the present invention, an equalization tank is provided on the base, an inlet pipe is connected to the upper end of the equalization tank, a coagulation tank connected to the lower end of the equalization tank is provided on one side of the equalization tank, a flocculation tank connected to the upper end of the coagulation tank is provided on one side of the coagulation tank, a connecting pipe is provided at the lower end of the flocculation tank, and the flocculation tank is connected to the sedimentation tank through the connecting pipe.

[0013] As a further optimization of the present invention, the regulating tank, coagulation tank and flocculation tank are all equipped with a stirring element.

[0014] As a further optimization of the present invention, a clear water tank is provided on the base, the clear water tank is connected to a sedimentation tank, and a drain pipe is connected to the collection tank.

[0015] The beneficial effects of this invention are as follows: 1. Unlike existing technologies, in actual use, a linear array of inclined corrugated plates is used instead of traditional honeycomb inclined tubes. The open flow channel fundamentally avoids the clogging problem of fibrous debris. The larger specific surface area effectively improves the sedimentation efficiency. The vertical extension plate at the top of the corrugated plate can eliminate the horizontal velocity component of the water flow, making the water output more uniform and stable, significantly improving the water quality. Furthermore, the modular design makes it easy to replace.

[0016] 2. Unlike existing technologies, in actual use, the C-shaped plate automatically squeezes the bevel at the top of the extension arm as it moves with the scraper, pushing the wave plate to slide along the mounting frame and stretching the spring. After detaching, the spring rebounds and causes the wave plate to generate high-frequency, small-amplitude vibrations. Zero additional energy consumption enables online automatic unblocking during operation, which can thoroughly shake off the accumulated mud and scale layer attached to the plate wall.

[0017] 3. Unlike existing technologies, in actual use, the extension length of the C-shaped plate can be flexibly adjusted by rotating the screw on the crossbeam, thereby precisely controlling the vibration amplitude of the corrugated plate and adapting to sewage treatment conditions with different concentrations and compositions. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of the present invention; Figure 2 This is a partial cross-sectional structural diagram of the sedimentation tank of the present invention; Figure 3 This is a schematic diagram of the reciprocating transport mechanism of the present invention; Figure 4 This is a schematic diagram of the scraper structure of the present invention; Figure 5 This is a schematic diagram of the wave plate structure of the present invention; Figure 6 This is the present invention. Figure 5 Enlarged structural diagram at point A in the middle.

[0019] In the diagram: 1. Base; 2. Sedimentation tank; 21. Collection tank; 211. Sewage pipe; 22. Baffle; 3. Sedimentation mechanism; 31. Mounting frame; 32. Corrugated plate; 321. Vertical extension plate; 4. Reciprocating conveying mechanism; 41. Truss; 42. Horizontal shaft; 43. Servo motor; 44. Chain; 441. Sprocket; 5. Scraper; 51. Mounting plate; 511. Horizontal frame; 52. Clamping strip; 53. Rubber strip; 54. C-shaped plate; 541. Horizontal bar; 542. Extrusion part; 55. Screw; 6. Spring; 7. Extension arm; 71. Slanted opening; 8. Adjustment tank; 81. Liquid inlet pipe; 9. Coagulation tank; 10. Flocculation tank; 101. Connecting pipe; 11. Agitator; 12. Clear water tank; 121. Drainage pipe. Detailed Implementation

[0020] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0021] Example 1, such as Figure 1 - Figure 6As shown, a factory wastewater treatment device includes a base 1 and a sedimentation tank 2 fixedly mounted on the base 1. A conical collection trough 21 is integrally formed at the lower end of the sedimentation tank 2, and a drain pipe 211 is connected to the bottom of the collection trough 21. A partition 22 is fixedly installed inside the sedimentation tank 2, with its lower end connected to the collection trough 21, dividing the sedimentation tank 2 into a sedimentation zone and a scum collection zone. A sedimentation mechanism 3 is installed inside the sedimentation tank 2. The sedimentation mechanism 3 includes multiple sets of mounting frames 31 parallel to and fixed to the inner wall of the sedimentation tank 2. A corrugated plate 32 is slidably mounted on each set of mounting frames 31. All corrugated plates 32 are arranged in a linear array and are inclined at a 60° angle to the horizontal direction. A vertical extension plate 321 is integrally bent at the upper end of the corrugated plate 32. Vertically upward extension arms 7 are fixedly connected to the upper ends of both sides of the corrugated plate 32. A slanted opening 71 is provided on one side of the top of the extension arm 7. A return spring 6 is connected between the extension arm 7 and the inner wall of the sedimentation tank 2, with both ends of the spring 6 rotatably connected to the extension arm 7 and the sedimentation tank 2, respectively.

[0022] like Figure 3 As shown, a reciprocating conveying mechanism 4 is fixedly installed on the top of the sedimentation tank 2. The reciprocating conveying mechanism 4 includes a truss 41 fixedly mounted on both sides of the top of the sedimentation tank 2. A horizontal shaft 42 is rotatably connected to each end of the truss 41. A servo motor 43 is fixedly installed at one end of the truss 41. The output shaft of the servo motor 43 is fixedly connected to the end of one of the horizontal shafts 42 through a reducer. A sprocket 441 is fixedly mounted on each end of the two horizontal shafts 42. A transmission chain 44 is mounted on the two sprockets 441 located on the same side. Multiple scrapers 5 are fixedly connected at equal intervals between the two chains 44. The inclined opening 71 faces the direction of movement of the scraper 5.

[0023] like Figure 4 As shown, each scraper 5 includes a horizontally arranged mounting plate 51. The two ends of the mounting plate 51 are fixedly connected to the chains 44 on both sides by bolts. The lower side of the mounting plate 51 is fixedly connected to a clamping strip 52 by multiple sets of bolts. A rubber scraping strip 53 is clamped and fixed between the clamping strip 52 and the mounting plate 51. The lower edge of the strip 53 is immersed below the water surface. A crossbeam 511 is fixedly welded to the middle of the upper side of the mounting plate 51. A vertical screw 55 is threaded through the crossbeam 511. A C-shaped plate 54 is rotatably connected to the lower end of the screw 55. The C-shaped plate 54 includes a horizontal crossbar 541 and extrusion parts 542 fixed to both ends of the crossbar 541. The upper surface of the crossbar 541 is rotatably connected to the lower end of the screw 55 by a bearing. The two extrusion parts 542 are slidably inserted into the reserved gap between the mounting plate 51 and the strip 53. The lower end of the extrusion part 542 is movably extruded and fitted with the inclined opening 71 at the top of the extension arm 7.

[0024] like Figure 1 - Figure 2As shown, a regulating tank 8, a coagulation tank 9, and a flocculation tank 10 are sequentially fixed on one side of the sedimentation tank 2 on the base 1. An inlet pipe 81 is connected to the upper side wall of the regulating tank 8, and the lower side wall of the regulating tank 8 is connected to the lower end of the coagulation tank 9 via a pipe. The upper side wall of the coagulation tank 9 is connected to the upper end of the flocculation tank 10 via a pipe, and the lower side wall of the flocculation tank 10 is connected to the lower end of the sedimentation zone of the sedimentation tank 2 via a connecting pipe 101. A stirring element 11 is rotatably installed inside each of the regulating tank 8, coagulation tank 9, and flocculation tank 10, and each stirring element 11 is driven to rotate by a top-mounted geared motor. A clear water tank 12 is fixed on the other side of the sedimentation tank 2 on the base 1, and the upper side wall of the sedimentation zone of the sedimentation tank 2 is connected to the clear water tank 12 via a drain pipe 121.

[0025] It should be noted that the specific working process of the factory wastewater treatment equipment is as follows: The wastewater to be treated enters the equalization tank 8 through the inlet pipe 81. Under the stirring action of the agitator 11, the water quality and quantity are homogenized. Then, it flows from the lower end of the equalization tank 8 into the coagulation tank 9, where it is fully mixed and reacted with the added coagulant under the action of the agitator 11, causing the colloidal particles in the water to destabilize. The mixture overflows from the upper end of the coagulation tank 9 into the flocculation tank 10, where it reacts with the added flocculant under the slow stirring action of the agitator 11, forming large, dense flocs. Finally, the wastewater containing flocs enters the sedimentation zone of the sedimentation tank 2 from the lower end through the connecting pipe 101.

[0026] Wastewater flows upward in sedimentation tank 2. When the water flows over multiple inclined corrugated plates 32, the floc particles in the water settle to the lower wall of the corrugated plates 32 using the principle of shallow pool sedimentation, and slide down along the inclined plate surface, eventually falling into the conical collection trough 21 at the lower end of sedimentation tank 2. After solid-liquid separation, the clear water continues to flow upward, and after being rectified by the vertical extension plate 321 at the upper end of the corrugated plates 32, the horizontal velocity component of the water flow is eliminated, and it flows smoothly from the drain pipe 121 at the upper end of sedimentation tank 2 into the clear water tank 12, and finally meets the discharge standards.

[0027] During wastewater treatment, the servo motor 43 drives the horizontal shaft 42 to rotate, which in turn drives the chains 44 on both sides to rotate synchronously via the sprocket 441. The multiple scrapers 5 fixed on the chains 44 move continuously in one direction. The rubber strips 53 on the underside of the scrapers 5 move close to the water surface, scraping away the floating scum, oil, and foam, and pushing them to the side of the sedimentation tank 2 away from the clear water tank 12.

[0028] When the scraper 5 moves above the corrugated plate 32, the pressing parts 542 at both ends of the C-shaped plate 54 on the scraper 5 contact the inclined opening 71 at the top of the extension arm 7 and exert a pressing effect, pushing the extension arm 7 and the corrugated plate 32 to slide downward along the mounting frame 31, while simultaneously stretching the return springs 6 at both ends. As the scraper 5 continues to move, after the pressing parts 542 completely disengage from the inclined opening 71, the stretched springs 6 quickly rebound, causing the corrugated plate 32 to slide downward rapidly along the mounting frame 31, generating high-frequency, small-amplitude vibrations. This thoroughly shakes off the accumulated sludge, algae, and scale layer adhering to the inner wall of the corrugated plate 32, causing it to fall into the collection tank 21 below. The sludge and scum in the collection tank 21 are periodically discharged through the drain pipe 211 at the bottom for subsequent sludge dewatering treatment.

[0029] During equipment operation, operators can adjust the extension length of the C-shaped plate 54 relative to the mounting plate 51 by rotating the screw 55 on the cross frame 511 according to the water quality and sludge adhesion. This allows for precise control of the pushing stroke of the extrusion piece 542 on the inclined opening 71, thus achieving precise adjustment of the vibration amplitude of the wave plate 32. When the rubber strip 53 wears out, it can be quickly replaced simply by loosening the bolts of the clamping strip 52, without disassembling the entire scraper 5.

[0030] The above-described embodiments are merely illustrative of several implementations of the present invention, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of the present invention, and these modifications and improvements all fall within the scope of protection of the present invention.

Claims

1. A factory sewage treatment device, comprising a base (1) and a sedimentation tank (2) arranged on the base (1), wherein a lower end of the sedimentation tank (2) is connected with a collecting tank (21), characterized in that: The sedimentation tank (2) is equipped with a sedimentation mechanism (3). The sedimentation mechanism (3) includes multiple linearly arrayed and inclined wave plates (32). Extension arms (7) are fixed on both sides of the wave plates (32). An oblique opening (71) is opened at the top of the extension arms (7). A spring (6) is connected between the extension arms (7) and the inner wall of the sedimentation tank (2). A reciprocating conveying mechanism (4) is fixed on the sedimentation tank (2). Multiple scrapers (5) are connected to the reciprocating conveying mechanism (4). Each scraper (5) includes a mounting plate (51). A C-shaped plate (54) is slidably arranged on the mounting plate (51). The C-shaped plate (54) and the oblique opening (71) are dynamically squeezed.

2. A factory effluent treatment apparatus according to claim 1, characterised in that: The sedimentation mechanism (3) also includes multiple mounting frames (31), which are fixedly installed in the sedimentation tank (2). The wave plate (32) is slidably installed on the mounting frame (31), and a vertical extension plate (321) is provided at the upper end of the wave plate (32).

3. A factory effluent treatment apparatus according to claim 1, characterised in that: The scraper (5) also includes a mounting plate (51), which is fixedly mounted on the reciprocating conveying mechanism (4). A clamping strip (52) is fixedly mounted on the mounting plate (51), and a rubber strip (53) is fixedly mounted between the clamping strip (52) and the mounting plate (51). A crossbeam (511) is fixedly mounted on the mounting plate (51), and a screw (55) is threaded onto the crossbeam (511). The screw (55) is connected to the C-shaped plate (54).

4. A factory effluent treatment apparatus according to claim 3, characterised in that: The C-shaped plate (54) includes a horizontal bar (541), which is rotatably connected to a screw (55). Extrusion members (542) are fixedly provided at both ends of the horizontal bar (541), and the extrusion members (542) are slidably disposed between the rubber strip (53) and the mounting plate (51).

5. A factory effluent treatment apparatus according to claim 1, characterised in that: The reciprocating conveying mechanism (4) includes a truss (41), which is fixedly mounted on the sedimentation tank (2). A horizontal shaft (42) is rotatably mounted at both ends of the truss (41). A servo motor (43) is fixedly mounted on the truss (41). The servo motor (43) is fixedly connected to one of the horizontal shafts (42). A sprocket (441) is fixedly mounted at both ends of the horizontal shaft (42). A chain (44) is sleeved on the sprocket (441) on the same side. Both ends of the mounting plate (51) are fixedly mounted on the chain (44).

6. A factory effluent treatment apparatus according to claim 1, characterised in that: The two ends of the spring (6) are rotatably connected to the extension arm (7) and the sedimentation tank (2) respectively.

7. A factory effluent treatment apparatus according to claim 1, characterised in that: A partition (22) is fixedly installed in the sedimentation tank (2), and the partition (22) is connected to the collection tank (21). A sewage pipe (211) is connected to the collection tank (21).

8. A factory effluent treatment apparatus according to claim 1, characterised in that: An equalization tank (8) is provided on the base (1). An inlet pipe (81) is connected to the upper end of the equalization tank (8). A coagulation tank (9) connected to the lower end of the equalization tank (8) is provided on one side of the equalization tank (8). A flocculation tank (10) connected to the upper end of the coagulation tank (9) is provided on one side of the coagulation tank (9). A connecting pipe (101) is provided at the lower end of the flocculation tank (10). The flocculation tank (10) is connected to the sedimentation tank (2) through the connecting pipe (101).

9. A factory effluent treatment apparatus according to claim 8, characterised in that: Agitator (11) is provided in each of the regulating tank (8), coagulation tank (9) and flocculation tank (10).

10. A factory effluent treatment apparatus according to claim 1, characterised in that: A clear water tank (12) is provided on the base (1), the clear water tank (12) is connected to the sedimentation tank (2), and a drain pipe (121) is provided on the collection tank (21).

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