Flushing device for drainage channel of secondary sedimentation tank

Abstract

The utility model provides a secondary sedimentation tank drainage channel flushing device which comprises a water conveying pipeline installed at the lower end of a sludge discharging crane bridge, the water conveying pipeline synchronously rotates along with the sludge discharging crane bridge, one end of the water conveying pipeline is provided with a water suction pump, the water suction pump is submerged below the water surface of a sedimentation tank, and the other end of the water conveying pipeline is provided with a vertical nozzle and a lateral nozzle. The vertical nozzles face the top end of the water retaining wall of the drainage channel, and the lateral nozzles face the side face of the water retaining wall, so that the problem of cleaning the inner wall of the drainage channel of the secondary sedimentation tank is solved.

Description

Technical Field

[0001] The utility model relates to the field of sewage treatment, in particular to a secondary sedimentation tank drainage channel flushing device. Background Art

[0002] According to the sewage treatment process, the secondary sedimentation tank is set after the biological aeration tank and before the deep treatment unit. After the sewage is biologically treated, the mixed liquid must enter the secondary sedimentation tank for mud and water separation, and the supernatant after precipitation is discharged to the subsequent unit. In the actual operation process, some small particles of suspended matter, insect eggs, moss and other substances are often attached to the inner wall of the drainage channel of the secondary sedimentation tank, affecting the water quality of the factory water. In order to ensure that the factory water is stable and meets the standards, it must be manually cleaned regularly, which consumes a lot of water resources. In the cleaning process, the water depth of the secondary sedimentation tank is about 5m, and the stainless steel dovetail groove used for overflow is sharp, and the operating personnel are at risk of drowning and other injuries. Utility Model Content

[0003] The utility model provides a flushing device for a drainage channel of a secondary sedimentation tank, which solves the problem of cleaning the inner wall of the drainage channel of the secondary sedimentation tank.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a secondary sedimentation tank drainage channel flushing device, including a water supply pipeline installed at the lower end of the mud discharge vehicle bridge, the water supply pipeline rotates synchronously with the mud discharge vehicle bridge, a water pump is provided at one end of the water supply pipeline, the water pump is submerged below the water surface of the sedimentation tank, and a vertical nozzle and a lateral nozzle are provided at the other end of the water supply pipeline, the vertical nozzle faces the top of the water retaining wall of the drainage channel, and the lateral nozzle faces the side of the water retaining wall.

[0005] In the preferred scheme, the water supply pipeline is composed of a hard pipe connection, and the water supply pipeline includes a pump side vertical pipe section, a horizontal pipe section and a nozzle side vertical pipe section which are connected in sequence to form a U-shaped structure. The lower end of the pump side vertical pipe section is connected to a water pump, and a flexible joint is provided at the lower end of the nozzle side vertical pipe section. A first branch and a second branch are provided at the lower end of the flexible joint. The first branch is connected to the vertical nozzle, and the second branch is connected to the side nozzle.

[0006] In a preferred solution, a crossbeam frame spanning over the water retaining wall is provided at the lower end of the mud discharge vehicle bridge frame, a first lifting frame is provided on the crossbeam frame, and a water pump is provided at the lower end of the first lifting frame so that the water pump can be raised and lowered.

[0007] In a preferred solution, a second lifting frame is provided on one end of the beam frame away from the first lifting frame, and the vertical nozzle and the lateral nozzle are arranged at the lower end of the second lifting frame so that the vertical nozzle and the lateral nozzle can be raised and lowered, and the water pump is connected to the vertical nozzle and the lateral nozzle by a hose.

[0008] In the preferred embodiment, the lifting frame includes an outer frame and an inner frame connected to the outer frame. A slider is provided at the lower end of the outer frame, and a slide rail is provided on the inner frame. The slide rail is slidably engaged with the slider. A winch and a guide fixed pulley group are provided at the upper end of the outer frame. The hoisting cable of the winch passes around the guide fixed pulley group to connect to the upper end of the inner frame.

[0009] In a preferred solution, a fixing plate is provided on the outer frame of the second lifting frame, a plurality of shift holes are provided on the fixing plate in the height direction, and an adjusting plate is also provided, the vertical nozzle is installed at the lower end of the adjusting plate, and a mounting hole is provided on the adjusting plate.

[0010] In a preferred solution, the cross beam frame is provided with a plurality of position holes along the length direction, a traveling frame is provided at the upper end of the first lifting frame, the traveling frame includes a roller base plate, a plurality of rotatable traveling rollers are provided on the roller base plate, an outwardly extending side edge is provided at the lower end of the cross beam frame, the traveling rollers roll against the side edge of the cross beam frame, a positioning bolt is provided at the upper end of the roller base plate, and the positioning bolt is threadedly connected to the position hole.

[0011] The beneficial effects of the utility model are as follows: utilizing the clean water in the sedimentation tank for flushing saves tap water, keeps the inner wall of the drainage channel of the secondary sedimentation tank clean, and ensures that the effluent quality meets the discharge standards; utilizing the original bridge frame to drive the nozzle for automatic flushing not only reduces the renovation cost, but also reduces the labor intensity of the operating personnel and the safety risks of poolside operations. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0013] Figure 1 This is a simplified schematic diagram of the original secondary sedimentation tank.

[0014] Figure 2 It is a schematic diagram of the utility model.

[0015] Figure 3 This is a structural diagram of a rigid pipe water supply pipeline.

[0016] Figure 4 Schematic diagram of a hose-connected cleaning device.

[0017] Figure 5 It is a schematic diagram of the beam frame and the lifting frame.

[0018] Figure 6 It is a cross-sectional view of the lifting frame.

[0019] Figure 7 This is the installation diagram of the vertical nozzle on the lifting frame.

[0020] Figure 8 This is a schematic diagram of the walking frame installed on the crossbeam frame.

[0021] In the figure: mud-discharging vehicle bridge 1; water pump 2; drainage channel 3; water retaining wall 301; vertical nozzle 4; lateral nozzle 5; flexible joint 6; water delivery pipeline 7; vertical pipe section 701 on the pump side; horizontal pipe section 702; vertical pipe section 703 on the nozzle side; flange clamp 704; first branch 705; second branch 706; sedimentation tank 8; first lifting frame 9; outer frame 901; inner frame 902; slide rail 903; slider 904; suspension cable 905; guide fixed pulley block 906; winch 907; second lifting frame 10; fixing plate 1001; adjusting plate 1002; shift hole 1003; mounting hole 1004; crossbeam frame 11; position hole 1101; traveling frame 12; roller base plate 1201; traveling roller 1202; positioning bolt 1203; and heightening sleeve 1204. DETAILED DESCRIPTION

[0022] like Figure 1-8 A secondary sedimentation tank drainage channel flushing device includes a water supply pipeline 7 installed at the lower end of a mud discharge vehicle bridge frame 1, the water supply pipeline 7 rotates synchronously with the mud discharge vehicle bridge frame 1, a water pump 2 is provided at one end of the water supply pipeline 7, the water pump 2 is immersed below the water surface of the sedimentation tank 8, and a vertical nozzle 4 and a lateral nozzle 5 are provided at the other end of the water supply pipeline 7. The vertical nozzle 4 faces the top of the water retaining wall 301 of the drainage channel 3, and the lateral nozzle 5 faces the side of the water retaining wall 301.

[0023] The sedimentation tank 8 is generally circular in shape, the drainage channel 3 surrounds the outside of the sedimentation tank 8, the mud-discharging vehicle is provided with a rotating shaft in the center of the sedimentation tank 8, and the outer ring end of the mud-discharging vehicle bridge 1 moves along a circular track above the drainage channel 3. That is to say, when traveling, the distance between the vertical nozzle 4 and the lateral nozzle 5 and the water retaining wall 301 remains unchanged, and the water retaining wall 301 can be continuously flushed to remove the accumulated microorganisms and mud.

[0024] The main body of the water delivery pipeline 7 can be in the form of a hose or a hard pipe.

[0025] The vertical nozzle 4 and the lateral nozzle 5 can adjust the spray angle.

[0026] In the preferred embodiment, the water supply pipeline 7 is composed of a hard pipe connection, and the water supply pipeline 7 includes a pump side vertical pipe section 701, a horizontal pipe section 702 and a nozzle side vertical pipe section 703 which are connected in sequence to form a U-shaped structure. The lower end of the pump side vertical pipe section 701 is connected to the water pump 2, and the lower end of the nozzle side vertical pipe section 703 is provided with a flexible joint 6. The lower end of the flexible joint 6 is provided with a first branch 705 and a second branch 706. The first branch 705 is connected to the vertical nozzle 4, and the second branch 706 is connected to the lateral nozzle 5.

[0027] The vertical pipe section 701 on the pump side and the horizontal pipe section 702, the horizontal pipe section 702 and the vertical pipe section 703 on the nozzle side, the first branch 705 and the vertical nozzle 4, the second branch 706 and the lateral nozzle 5 are all connected through a ninety-degree elbow. The first branch 705 and the first branch 705 are connected by a tee. A straight pipe is connected between the tee and the flexible joint 6. The straight pipe is cut to a specific length according to the distance from the vertical nozzle 4 to the top of the water retaining wall 301.

[0028] The transverse pipe section 702 can be installed at the lower end of the mud discharge vehicle bridge frame 1 through the flange clamp 704.

[0029] Since the main body of the water delivery pipeline 7 is a hard pipe, the water pump 2 can be directly suspended by the vertical pipe section 701 on the pump side at a position one to two meters below the water surface to avoid contact with the mud at the bottom of the pool, ensure that the flushing water is clean water, and try not to affect the cleanliness of the water outlet of the drainage channel 3. In addition, a filter screen is installed at the outlet of the drainage channel 3 to intercept and recover the pollutants flushed down to prevent the water from being polluted.

[0030] In a preferred solution, a crossbeam frame 11 is provided at the lower end of the mud-discharging vehicle bridge frame 1 and spans over the water retaining wall 301 . A first lifting frame 9 is provided on the crossbeam frame 11 . A water pump 2 is provided at the lower end of the first lifting frame 9 so that the water pump 2 can be raised and lowered.

[0031] The height of the water pump 2 can be adjusted according to the water level of the sedimentation tank 8, and it is always below the water surface and close to the water surface, ensuring that the flushing water is the cleanest water.

[0032] In a preferred embodiment, a second lifting frame 10 is provided on one end of the crossbeam frame 11 away from the first lifting frame 9, and the vertical nozzle 4 and the lateral nozzle 5 are arranged at the lower end of the second lifting frame 10 so that the vertical nozzle 4 and the lateral nozzle 5 can be raised and lowered, and the water pump 2 is connected to the vertical nozzle 4 and the lateral nozzle 5 by a hose.

[0033] Since the water retaining wall 301 has a certain height, the overall height of the lateral nozzle 5 can be adjusted to ensure that all height positions of the water retaining wall 301 can be flushed.

[0034] In the preferred embodiment, the lifting frame includes an outer frame 901 and an inner frame 902 which is sleeved with the outer frame 901. A slider 904 is provided at the lower end of the outer frame 901, and a slide rail 903 is provided on the inner frame 902. The slide rail 903 is slidably engaged with the slider 904. A winch 907 and a guide fixed pulley group 906 are provided at the upper end of the outer frame 901. The lifting cable 905 of the winch 907 passes around the guide fixed pulley group 906 to connect to the upper end of the inner frame 902.

[0035] The winch 907 is powered and drives the inner frame 902 to rise and fall. The water pump 2 at the lower end of the inner frame 902 can adjust the water suction height, and the water pump 2 can be easily repaired or replaced on the water surface.

[0036] In the preferred embodiment, a fixing plate 1001 is provided on the outer frame 901 of the second lifting frame 10, a plurality of shift holes 1003 are provided on the fixing plate 1001 along the height direction, and an adjusting plate 1002 is also provided, the vertical nozzle 4 is installed at the lower end of the adjusting plate 1002, and a mounting hole 1004 is provided on the adjusting plate 1002.

[0037] After the height of the vertical nozzle 4 is adjusted, the mounting hole 1004 is connected to the shift hole 1003 by bolts.

[0038] In the preferred embodiment, the cross beam frame 11 is provided with a plurality of position holes 1101 along the length direction, a walking frame 12 is provided at the upper end of the first lifting frame 9, the walking frame 12 includes a roller base plate 1201, a plurality of rotatable walking rollers 1202 are provided on the roller base plate 1201, an outwardly extending side edge is provided at the lower end of the cross beam frame 11, the walking roller 1202 rolls against the side edge of the cross beam frame 11, a positioning bolt 1203 is provided at the upper end of the roller base plate 1201, and the positioning bolt 1203 is threadedly connected to the position hole 1101.

[0039] A spacer sleeve 1204 is provided on the back side of the positioning bolt 1203 of the roller base plate 1201 to prevent the roller base plate 1201 from being deformed when the spacer sleeve 1204 is tightened.

[0040] A walking frame 12 of the same structure is provided at the upper end of the second lifting frame 10. The walking frame 12 can facilitate the first lifting frame 9 and the second lifting frame 10 to adjust the specific lateral positions, so as to prevent the water pump 2 from being too close to the vertical nozzle 4 and the lateral nozzle 5, causing the flushed sewage to directly flow back into the water pump 2. In addition, it is also convenient to adjust the distance between the lateral nozzle 5 and the water retaining wall 301.

[0041] Since the drainage channel 3 is much shallower than the sedimentation tank 8, the first lifting frame 9 and the traveling frame 12 can be installed on the crossbeam frame 11 at the drainage channel 3 and then rolled to the top of the sedimentation tank 8, thereby reducing the difficulty of installation.

[0042] The above embodiments are only preferred technical solutions of the present invention and should not be regarded as limitations of the present invention. The protection scope of the present invention shall be the technical solutions recorded in the claims, including equivalent replacement solutions of the technical features in the technical solutions recorded in the claims. That is, equivalent replacement improvements within this scope are also within the protection scope of the present invention.

Claims

1. A secondary sedimentation tank drainage channel flushing device, characterized in that: The invention comprises a water delivery pipeline (7) installed at the lower end of a mud discharge vehicle bridge frame (1), the water delivery pipeline (7) rotates synchronously with the mud discharge vehicle bridge frame (1), a water pump (2) is provided at one end of the water delivery pipeline (7), the water pump (2) is immersed below the water surface of a sedimentation tank (8), and a vertical nozzle (4) and a lateral nozzle (5) are provided at the other end of the water delivery pipeline (7), the vertical nozzle (4) faces the top of a water retaining wall (301) of a drainage channel (3), and the lateral nozzle (5) faces the side of the water retaining wall (301).

2. The secondary sedimentation tank drainage channel flushing device according to claim 1 is characterized in that: The water delivery pipeline (7) is formed by connecting hard pipes. The water delivery pipeline (7) comprises a pump-side vertical pipe section (701), a transverse pipe section (702) and a nozzle-side vertical pipe section (703) which are connected in sequence to form a U-shaped structure. The lower end of the pump-side vertical pipe section (701) is connected to the water pump (2). The lower end of the nozzle-side vertical pipe section (703) is provided with a flexible joint (6). The lower end of the flexible joint (6) is provided with a first branch (705) and a second branch (706). The first branch (705) is connected to the vertical nozzle (4), and the second branch (706) is connected to the lateral nozzle (5).

3. The secondary sedimentation tank drainage channel flushing device according to claim 1 is characterized in that: A crossbeam frame (11) is provided at the lower end of the mud-discharging vehicle bridge frame (1) and spans above the water retaining wall (301). A first lifting frame (9) is provided on the crossbeam frame (11). A water pump (2) is provided at the lower end of the first lifting frame (9) so that the water pump (2) can be raised and lowered.

4. The secondary sedimentation tank drainage channel flushing device according to claim 3 is characterized in that: A second lifting frame (10) is also provided on one end of the crossbeam frame (11) away from the first lifting frame (9); the vertical nozzle (4) and the lateral nozzle (5) are provided at the lower end of the second lifting frame (10) so that the vertical nozzle (4) and the lateral nozzle (5) can be raised and lowered; and the water pump (2) is connected to the vertical nozzle (4) and the lateral nozzle (5) by a hose.

5. The secondary sedimentation tank drainage channel flushing device according to claim 3 or 4 is characterized in that: The lifting frame comprises an outer frame (901) and an inner frame (902) sleeved with the outer frame (901); a slider (904) is provided at the lower end of the outer frame (901); a slide rail (903) is provided on the inner frame (902); the slide rail (903) and the slider (904) are slidably engaged; a winch (907) and a guide fixed pulley block (906) are provided at the upper end of the outer frame (901); a hoisting cable (905) of the winch (907) passes around the guide fixed pulley block (906) to connect to the upper end of the inner frame (902).

6. The secondary sedimentation tank drainage channel flushing device according to claim 5 is characterized in that: A fixing plate (1001) is provided on the outer frame (901) of the second lifting frame (10), a plurality of shift holes (1003) are provided on the fixing plate (1001) along the height direction, and an adjustment plate (1002) is also provided, the vertical nozzle (4) is mounted on the lower end of the adjustment plate (1002), and a mounting hole (1004) is provided on the adjustment plate (1002).

7. The secondary sedimentation tank drainage channel flushing device according to claim 3 is characterized in that: The crossbeam frame (11) is provided with a plurality of position holes (1101) along the length direction; a walking frame (12) is provided at the upper end of the first lifting frame (9); the walking frame (12) comprises a roller base plate (1201); a plurality of rotatable walking rollers (1202) are provided on the roller base plate (1201); an outwardly extending side edge is provided at the lower end of the crossbeam frame (11); the walking rollers (1202) roll against the side edge of the crossbeam frame (11); a positioning bolt (1203) is provided at the upper end of the roller base plate (1201); and the positioning bolt (1203) is threadedly connected to the position hole (1101).

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