A sludge hopper device for discharging sludge

Abstract

The present invention relates to a sludge hopper device for discharging sludge, which is in an inverted conical shape and is surrounded by inclined wall support plates in the shape of a trapezoid on four sides. The upper surface of each inclined wall support plate is connected to a corrugated structure layer through a shock-absorbing gasket. A submersible sludge pump is provided at the bottom of the inclined wall support plate. The inlet of the submersible sludge pump is connected to the bottom end of the corrugated structure layer, and the outlet of the submersible sludge pump is connected to a sludge discharge pipe; when the submersible sludge pump operates and vibrates, it can drive the corrugated structure layer to vibrate, promoting sludge discharge; the corrugated structure layer includes at least one layer of corrugated plates, and the corrugated plates include a number of crests and troughs. Each crest and trough points from the upper part of the inclined wall support plate to the lower part of the inclined wall support plate. The corrugated plates on the inclined wall support plates make up for the defect of insufficient inclination angle of the inclined wall support plates and provide an inclination angle addition for the inclined wall support plates.

Description

Technical Field

[0001] The invention belongs to the technical field of sewage treatment sludge discharge equipment, and in particular relates to a sludge bucket device for discharging sludge. Background Art

[0002] Integrated sewage treatment equipment is an integrated sewage treatment system, which generally includes pretreatment, biochemical treatment and deep treatment. The biochemical treatment unit generally adopts the biofilm method or the activated sludge method, among which the commonly used activated sludge methods are the AO process, the AAO process and related deformation processes. The activated sludge method will produce sludge during operation, so a secondary sedimentation tank needs to be set up afterwards to separate mud and water. The separated sewage enters the next deep treatment unit. The sludge is collected by the mud hopper and discharged through the external discharge pipe, and then other professional treatments are carried out. When the requirements for the effluent water quality are high, the deep treatment unit usually has a coagulation sedimentation tank, which is used to form flocs with the suspended matter in the water after the addition of the drug. The flocs can absorb pollutants such as phosphorus and SS in the sewage. After the flocs are precipitated, they are collected through the mud hopper, and then the sediment is discharged for treatment.

[0003] Vertical flow sedimentation tanks are often used in secondary sedimentation tanks, and vertical flow sedimentation tanks or inclined tube sedimentation tanks are often used in coagulation sedimentation tanks. The vertical flow sedimentation tank is divided into four parts from top to bottom: super-high area, sedimentation area, buffer zone and mud hopper. Due to the limitations of transportation or installation and operation conditions, the width and height of the integrated sewage treatment equipment are generally about 3 meters. According to the requirements of the "Outdoor Drainage Design Standard" (GB50014-2021), the angle between the inclined wall of the square mud hopper and the horizontal plane should be 60°. For integrated sewage treatment equipment with a width and height of about 3m, due to the limitation of the equipment height, the angle of the inclined wall of the mud hopper and the height of the sedimentation area are difficult to meet at the same time. For example, the following problems may arise:

[0004] 1. The mud accumulation area at the bottom of the mud hopper is small. When the inclination angle of the inclined wall is 60°, the mud hopper height can reach 2m, but the height of the sedimentation area and buffer zone is shortened, resulting in poor sludge sedimentation effect;

[0005] 2. Keep the bottom area of the mud hopper small while ensuring the height of the buffer zone and the sedimentation zone. At this time, the inclination angle of the mud hopper wall becomes smaller, for example, the maximum value can reach 40°. This angle causes the sludge precipitated on the mud hopper wall to be unable to slide down to the bottom of the mud hopper by gravity for a long time and there will be floating sludge after anaerobic reaction;

[0006] 3. When the height of the buffer zone and the sedimentation zone and the inclination angle of the mud bucket wall are met at the same time, it is necessary to increase the bottom area of the mud bucket. The side length of the bottom of the mud bucket can reach more than 1.6m. If the bottom area is too large, the sludge on the bottom of the mud bucket cannot be completely discharged when discharging the sludge. After long-term sedimentation, the sludge will float up. Summary of the invention

[0007] In view of the above problems, on the basis of ensuring that the bottom of the sludge hopper has a small sludge accumulation area and the sedimentation area and buffer zone have appropriate heights, the inclined wall of the sludge hopper is set as a multi-layer structure. The bottom layer is used as a support structure, which is the original steel structure or is consistent with the equipment body. The upper layer is provided with a corrugated structure layer. By increasing the inclination angle of the inclined wall through the corrugated surface, the angle meets the requirement of 60°. The sludge discharge adopts a submersible sludge pump. The vibration of the pump during operation drives the vibration of the corrugated sludge structure layer at the same time, effectively promoting the sludge deposited on the inclined wall to slide down to the bottom of the sludge hopper, and then being smoothly discharged through the pump, improving the effluent quality of the sedimentation tank and the sludge discharge effect, and reducing the probability of sludge floating in the sedimentation tank.

[0008] The present invention provides a sludge hopper device for discharging sludge, which is in an inverted conical shape and is surrounded by inclined wall support plates in the shape of trapezoids on four sides. The upper surface of each inclined wall support plate is connected to a corrugated structure layer through a shock-absorbing gasket. A submersible sludge pump is provided at the bottom of the inclined wall support plate. The inlet of the submersible sludge pump is connected to the bottom end of the corrugated structure layer, and the outlet of the submersible sludge pump is connected to a sludge discharge pipe. When the submersible sludge pump vibrates during operation, it can drive the corrugated structure layer to vibrate, promoting sludge discharge, and the shock-absorbing gasket reduces the knocking of the corrugated structure layer on the inclined wall support plate.

[0009] The corrugated structure layer includes at least one corrugated plate. The corrugated plate includes a number of wave crests and wave troughs. Each wave crest and wave trough points from the upper part of the inclined wall support plate to the lower part of the inclined wall support plate. The corrugated plate on the inclined wall support plate makes up for the defect of insufficient inclination angle of the inclined wall support plate and provides an inclination angle addition for the inclined wall support plate.

[0010] Optionally, the corrugated structure layer includes one corrugated plate. The angle of the wave crest is 60 - 120°, the wave trough is arc-shaped, the corrugated plate is laid along the upper surface of the inclined wall support plate, and a shock-absorbing gasket is arranged between the wave trough of the corrugated plate and the inclined wall support plate.

[0011] A number of fixing rings are provided on the inclined wall support plate, and the corrugated plate is bound to the fixing rings and thus fixed on the inclined wall support plate.

[0012] Further optionally, the radius of the wave trough of the corrugated plate is 50 - 70 mm, and the height difference between the wave crest and the wave trough is 200 - 250 mm.

[0013] Further optionally, after the shock-absorbing gasket at the wave trough is pressed tightly, the distance between the wave trough and the inclined wall support plate is 5 - 10 mm.

[0014] A gap is reserved between the top of the corrugated plate and the side wall of the sedimentation tank, so that when the corrugated plate vibrates, it does not collide with the side wall of the sedimentation tank.

[0015] Optionally, the corrugated structure layer includes two corrugated plates, which are stacked up and down, and the wave crests and wave troughs of the two corrugated plates correspond to each other.

[0016] On the lower surface of each wave crest of the upper corrugated plate and the lower corrugated plate, a number of telescopic cross beams are evenly arranged. The two ends of the telescopic cross beam abut against the two side surfaces of the wave crest, and are used to adjust the angle of the wave crest;

[0017] The wave trough of the lower corrugated plate is slidably connected to the guide rail groove through a shock-absorbing gasket. A number of guide rail grooves are horizontally arranged on the upper surface of the inclined wall support plate. When the telescopic cross beam adjusts the wave crest angle of the corrugated plate, without changing the wave trough angle, the width of the corrugated plate is indirectly changed. Since the corrugated plate is laid on the inclined wall support plate, when the width of the corrugated plate changes, the position of the corrugated plate on the inclined wall support plate also changes.

[0018] Further optionally, a number of telescopic vertical rods are evenly arranged below each wave crest of the lower corrugated plate, and are used to extend out of the lower corrugated plate and adjust the height of the upper corrugated plate;

[0019] A number of telescopic vertical rods are evenly arranged on the upper surface of the inclined wall support plate along the length direction of the corresponding same wave crest, and the position of the telescopic vertical rod does not coincide with the guide rail groove;

[0020] The bottom of the telescopic vertical rod is fixed on the inclined wall support plate, and the top is provided with an inverted U-shaped fixed bracket for supporting the lower surface of the wave crest of the upper corrugated plate;

[0021] A notch is provided at the position of the wave crest of the lower corrugated plate corresponding to the telescopic vertical rod, allowing the telescopic vertical rod to stretch up and down.

[0022] Further optionally, for the upper corrugated plate, a number of upper telescopic cross beams are evenly arranged on the lower surface of the upper corrugated plate along the length direction of the corresponding same wave crest, and the position of the upper telescopic cross beam corresponds to the notch position of the lower corrugated plate;

[0023] For the lower corrugated plate, a number of lower telescopic cross beams are evenly arranged on the lower surface of the lower corrugated plate along the length direction of the corresponding same wave crest, and the position of the lower telescopic cross beam does not correspond to the notch position.

[0024] Further optionally, the guide rail groove includes a straight part in the middle and arc parts on both sides, and the arc part has an upward convex arc;

[0025] A number of sliders are arranged in the same guide rail groove. A shock-absorbing gasket is provided on the top of each slider, and each shock-absorbing gasket is correspondingly connected to a wave trough.

[0026] Preferably, in the order from top to bottom, the telescopic lengths of the telescopic cross beams of the same wave crest gradually decrease, so that the apex angle of the same wave crest gradually decreases from top to bottom. After several wave crests are matched, the width of the upper part of the corrugated plate is greater than the width of the lower part, which conforms to the shape of the inclined wall support plate;

[0027] The telescopic heights of the telescopic vertical rods corresponding to the different wave crests of the upper corrugated plate at the same horizontal height are equal, making the upper corrugated plate flat;

[0028] The lower telescopic cross beam is arranged close to the notch, and the apex angles at the upper and lower corresponding positions of the corresponding wave crests of the upper corrugated plate and the lower corrugated plate are the same, and the telescopic lengths of the upper telescopic cross beam and the lower telescopic cross beam corresponding to each other at the upper and lower corresponding wave crests are equal. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 is a schematic structural view of a sludge hopper device for discharging sludge;

[0030] Figure 2 is a top view schematic of a sludge hopper device for discharging sludge;

[0031] Figure 3 is a schematic structural view of a horizontal cross-section of a corrugated plate;

[0032] Figure 4 is a schematic view of the stacked upper and lower corrugated plates;

[0033] Figure 5 is a schematic structural view of a telescopic vertical rod.

[0034] In the drawings, 1 - inclined wall support plate, 2 - corrugated structure layer, 3 - submersible sludge pump, 4 - shock pad, 5 - sludge discharge pipe, 6 - upper corrugated plate, 7 - lower corrugated plate, 8 - upper telescopic cross beam, 9 - telescopic vertical rod, 10 - guide rail groove, 11 - slider, 12 - inverted U-shaped fixed bracket, 13 - notch, 14 - lower telescopic cross beam, 15 - flat part, 16 - arc part. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0035] This embodiment provides a sludge hopper device for discharging sludge, as Figures 1-5 shown, which is inverted conical and surrounded by four trapezoidal inclined wall support plates 1. The upper surface of each inclined wall support plate 1 is connected to the corrugated structure layer 2 through a shock pad 4. A submersible sludge pump 3 is provided at the bottom of the inclined wall support plate 1. The inlet of the submersible sludge pump 3 is connected to the bottom end of the corrugated structure layer 2, and the outlet of the submersible sludge pump 3 is connected to the sludge discharge pipe 5; when the submersible sludge pump 3 operates and vibrates, it can drive the corrugated structure layer 2 to vibrate, promoting sludge discharge, and the shock pad 4 reduces the knocking of the corrugated structure layer 2 on the inclined wall support plate 1;

[0036] The corrugated structure layer 2 includes at least one layer of corrugated plates. The corrugated plates include a plurality of wave crests and wave troughs. Each wave crest and wave trough points from the upper part of the inclined wall support plate 1 to the lower part of the inclined wall support plate 1, that is, the central axis of the wave crest and the wave trough is in the up and down direction. The corrugated plates on the inclined wall support plate 1 make up for the defect of insufficient inclination angle of the inclined wall support plate 1 and provide an inclination angle addition for the inclined wall support plate 1.

[0037] The adjacent corrugated structure layers 2 do not connect to each other, facilitating the movement of each corrugated structure layer 2. Each wave crest and wave trough point from the upper part of the inclined wall support plate 1 to the lower part of the inclined wall support plate 1. The sludge falling on the wave crest slides obliquely downward along the inclined surface of the wave crest into the wave trough, and then continues to slide along the wave trough to the inlet of the submersible sludge pump 3. The sludge falling on the wave trough directly slides along the wave trough to the inlet of the submersible sludge pump 3.

[0038] Optionally, the inclined wall support plate 1 is made of steel plate, stainless steel plate or the same material as the sedimentation tank. The strength of the inclined wall support plate 1 meets the weight of supporting the effective water depth in the sedimentation tank, serving as the bottom support structure for the corrugated structure layer 2 and the entire sedimentation tank.

[0039] The inclination angle of the inclined wall support plate 1 with respect to the horizontal direction is not less than 36°, facilitating the provision of an inclination angle addition for the corrugated structure layer 2.

[0040] Optionally, the corrugated structure layer 2 includes a layer of corrugated board. The angle of the wave crest is 60 - 120°, preferably 90°. The wave trough is arc-shaped, and the radian of the wave trough is not greater than 90°. The corrugated board is laid along the upper surface of the inclined wall support plate 1. A shock-absorbing gasket 4 is arranged between the wave trough of the corrugated board and the inclined wall support plate 1, so that when the corrugated board vibrates with the submersible sludge pump 3, the knocking on the inclined wall support plate 1 is reduced.

[0041] A number of fixing rings are provided on the inclined wall support plate 1. The corrugated board is bound to the fixing rings and thus fixed on the inclined wall support plate 1. For example, the fixing rings and the wave trough are bound by thin steel wires, thereby pressing the shock-absorbing gasket 4 below the wave trough.

[0042] Further optionally, the radius of the wave trough of the corrugated board is 50 - 70 mm, and the height difference between the wave crest and the wave trough is 200 - 250 mm.

[0043] Further optionally, after the shock-absorbing gasket 4 at the wave trough is pressed, the distance between the wave trough and the inclined wall support plate 1 is 5 - 10 mm. By adjusting the thickness of the rubber gasket and the rotation speed of the submersible sludge pump 3, the vibration effect of the corrugated board is strengthened, enabling the sludge deposited on the corrugated board to slide better to the bottom of the mud hopper.

[0044] A gap, such as 5 - 10 mm, is reserved between the top of the corrugated board and the side wall of the sedimentation tank, so that when the corrugated board vibrates, it does not collide with the side wall of the sedimentation tank.

[0045] The mud hopper designed in the present invention adopts a double-layer design of corrugated board and inclined wall support plate 1, which can reduce the inclination angle of the inclined wall support plate 1, ensure that there is enough height in the buffer area and the sedimentation tank of the sedimentation tank, and thus ensure the sedimentation effect. The structure of the corrugated board effectively increases the inclination angle of the sludge sliding, reduces the deposition of dead mud, and improves the sludge drainage effect. Through the interaction of the submersible sludge pump 3 and the shock-absorbing gasket 4, the vibration effect of the corrugated board is increased, which is more conducive to the sliding and external discharge of the sludge.

[0046] Optionally, the corrugated structure layer 2 includes two layers of corrugated plates, which are stacked up and down, and the crests and troughs of the two layers of corrugated plates correspond to each other; the inlet of the submersible sludge pump 3 is connected to the bottom of the lower corrugated plate 7, and the sludge sliding down from the bottom of the upper corrugated plate 6 also falls on the bottom of the lower corrugated plate 7 and enters the submersible sludge pump 3.

[0047] On the lower surface of each crest of the upper corrugated plate 6 and the lower corrugated plate 7, a number of telescopic cross beams are evenly provided. The two ends of the telescopic cross beam abut against the two sides of the crest, for adjusting the angle of the crest, that is, when the telescopic cross beam extends, the angle of the crest increases, and when the telescopic cross beam shortens, the angle of the crest decreases.

[0048] The trough of the lower corrugated plate 7 is slidably connected to the guide rail groove 10 through a shock pad 4, and a number of guide rail grooves 10 are horizontally arranged on the upper surface of the inclined wall support plate 1.

[0049] Optionally, a number of telescopic vertical rods 9 are evenly arranged below each crest of the lower corrugated plate 7, for extending out of the lower corrugated plate 7 and adjusting the height of the upper corrugated plate 6.

[0050] A number of telescopic vertical rods 9 are evenly arranged on the upper surface of the inclined wall support plate 1 along the length direction of the corresponding same crest, and the position of the telescopic vertical rod 9 does not coincide with the guide rail groove 10.

[0051] The bottom of the telescopic vertical rod 9 is fixed on the inclined wall support plate 1, and the top is provided with an inverted U-shaped fixed bracket 12 for supporting the lower surface of the crest of the upper corrugated plate 6.

[0052] At the position corresponding to the telescopic vertical rod 9 on the crest of the lower corrugated plate 7, a notch 13 is provided, allowing the telescopic vertical rod 9 to stretch up and down. By changing the height of the telescopic vertical rod 9, the distance between the upper and lower corrugated plates is adjusted.

[0053] Optionally, for the upper corrugated plate 6, a number of upper telescopic cross beams 8 are evenly arranged on the lower surface of the upper corrugated plate 6 along the length direction of the corresponding same crest, and the position of the upper telescopic cross beam 8 corresponds to the position of the notch 13 of the lower corrugated plate 7.

[0054] For the lower corrugated plate 7, a number of lower telescopic cross beams 14 are evenly arranged on the lower surface of the lower corrugated plate 7 along the length direction of the corresponding same crest, and the position of the lower telescopic cross beam 14 does not correspond to the position of the notch 13.

[0055] Preferably, since the inclined wall support plate 1 is trapezoidal in reverse, the telescopic length of the telescopic cross beams of the same crest gradually decreases in the order from top to bottom, so that the apex angle of the same crest gradually decreases from top to bottom. After the cooperation of several crests, the width of the upper part of the corrugated plate is greater than that of the lower part, which conforms to the shape of the inclined wall support plate 1.

[0056] Preferably, the lower telescopic cross beam 14 is disposed close to the notch 13, that is, the horizontal distance between the upper telescopic cross beam 8 and the lower telescopic cross beam 14 corresponding up and down is not very different;

[0057] The apex angles at the corresponding upper and lower positions of the corresponding wave crests of the upper corrugated plate 6 and the lower corrugated plate 7 are kept the same, that is, the telescopic lengths of the upper telescopic cross beam 8 and the lower telescopic cross beam 14 corresponding up and down of the corresponding wave crests are equal;

[0058] The telescopic heights of the telescopic vertical rods 9 corresponding to different wave crests of the upper corrugated plate 6 at the same horizontal height are equal, so that the upper corrugated plate 6 is flat; the telescopic heights of the telescopic vertical rods 9 corresponding to the same wave crest of the upper corrugated plate 6 may be equal, or may gradually decrease from top to bottom, so that the overall inclination angle of the upper corrugated plate 6 can become larger, further increasing the inclination addition, while the overall inclination angle of the lower corrugated plate 7 remains unchanged.

[0059] Further optionally, the adjustable range of the angle of the wave crests of the upper and lower corrugated plates is 60 - 120°, and the radian of the wave trough is not greater than 90°;

[0060] The radius of the wave trough is 50 - 70 mm. There are gaps reserved between the two sides of the upper and lower corrugated plates and the two side edges of the inclined wall support plate 1, allowing the two sides of the corrugated plate to elongate when the wave crest angle of the corrugated plate becomes larger, and the top and bottom of the upper and lower corrugated plates are fixed.

[0061] Further optionally, the guide rail groove 10 includes a flat part 15 in the middle and arc parts 16 on both sides. The arc parts 16 have an upward convex arc. Since the inclined wall support plate 1 is trapezoidal inverted, as the apex angles of the wave crests of the upper and lower corrugated plates increase, the width of the corrugated plate increases. In order to match the shape characteristics of the inclined wall support plate, the increase amplitude of the upper wave crest apex angle of the corrugated plate is greater than that of the lower part, so that when the corrugated plate is widened to a large extent, it forms a shape wider at the top and narrower at the bottom. Therefore, the two sides of the guide rail groove 10 are arc parts 16 with upward convex arcs; if the widening degree of the corrugated plate is not large and the corrugated plate is still square with the same upper and lower widths, the flat part 15 of the guide rail groove 10 is used;

[0062] A plurality of sliders 11 are provided in the same guide rail groove 10. A shock absorption gasket 4 is provided on the top of each slider 11, and each shock absorption gasket 4 is correspondingly connected to a wave trough. In the same guide rail groove 10, the distance between two adjacent sliders 11 is the distance between two adjacent wave troughs corresponding thereto.

[0063] Preferably, the flat part 15 of a guide rail groove 10 is parallel to the upper telescopic cross beam 8 or the lower telescopic cross beam 14 closest to it, so that the telescopic movement of the corrugated plate can be carried out along the guide rail groove.

[0064] Further optionally, the upper surface of the guide rail groove 10 is provided with a rubber cover with a slit in the middle to allow the top of the slider 11 to be exposed from the rubber cover without affecting the movement of each slider 11 along the guide rail groove 10. The rubber cover prevents excessive sludge in the mud bucket from falling into the guide rail groove 10.

[0065] The above-mentioned two-layer corrugated plate provided by the present invention expands the inclination angle addition range of the corrugated structure layer 2, and the application is more flexible. When the single-layer corrugated plate can meet the requirements of the inclination angle addition, the two layers of corrugated plates can be stacked up and down without pulling the distance between the two layers of corrugated plates. At this time, the trough of the upper corrugated plate 6 is sunken in the trough of the lower corrugated plate 7, and the crest of the upper corrugated plate 6 is stacked on the crest of the lower corrugated plate 7. Since the position of the upper telescopic beam 8 corresponds to the position of the notch 13 of the lower corrugated plate 7, when stacked, the upper telescopic beam 8 is clamped in the notch 13 so that the upper and lower corrugated plates are stacked stably. At this time, the telescopic vertical rod 9 is in the shortest state, and the inverted U-shaped fixed bracket 12 is below the crest of the lower corrugated plate 7.

[0066] When the single-layer corrugated plate cannot meet the requirement of the inclination angle addition, the telescopic vertical rod 9 is extended, and the inverted U-shaped fixed support 12 extends from the notch 13, and is inserted into the lower surface of the crest of the upper corrugated plate 6, lifting the upper corrugated plate 6 up. The sludge at the bottom of the upper corrugated plate 6 can also fall to the bottom of the mud bucket and be pumped away by the submersible sludge pump 3. When it is necessary to adjust the inclination angle of the upper and lower corrugated plates, the upper telescopic crossbeam 8 and the lower telescopic crossbeam 14 are synchronously extended or shortened to change the angle of the crest of the two layers of corrugated plates and the width of the two layers of corrugated plates; and the angles of the upper and lower corresponding crests of the upper and lower corrugated plates always remain the same. When the crest angle becomes larger, the overall width of the two layers of corrugated plates increases, driving the slider 11 to slide on the straight part 15 of the guide groove 10, allowing the corrugated plate to widen; when the crest angle of the upper part of the two layers of corrugated plates further increases, making the corrugated plates fan-shaped, the slider 11 slides on the arc part 16 of the guide groove 10. When the upper corrugated plate 6 is widened, the position of the wave crest will move slightly, thereby driving the inverted U-shaped fixing bracket 12 to move slightly, thereby causing the corresponding telescopic vertical rod 9 to tilt to a certain extent. However, since the notch 13 has a certain horizontal length, the telescopic vertical rod 9 is allowed to tilt.

[0067] Further optionally, the corrugated plate is made of UPVC (rigid PVC) or HDPE (high-density polyethylene), and the smooth surface of the plastic material is used to improve the mud discharge effect.

[0068] The mud bucket device provided by the present invention is suitable for vertical flow sedimentation tanks, inclined tube sedimentation tanks and coagulation sedimentation tanks. The water inlet pipe and central barrel of the vertical flow sedimentation tank and the water inlet area and inclined tube part of the inclined tube sedimentation tank can be replaced by different forms.

Claims

1. A sludge hopper device for discharging sludge, characterized in that, It is inverted conical and surrounded by inclined wall support plates in the shape of a four-sided trapezoid. The upper surface of each inclined wall support plate is connected to the corrugated structure layer through shock-absorbing gaskets. A submersible sludge pump is provided at the bottom of the inclined wall support plate. The inlet of the submersible sludge pump is connected to the bottom end of the corrugated structure layer, and the outlet of the submersible sludge pump is connected to the sludge discharge pipe; when the submersible sludge pump vibrates during operation, it can drive the corrugated structure layer to vibrate, promoting sludge discharge. The corrugated structure layer includes at least one layer of corrugated plate. The corrugated plate includes a number of wave crests and wave troughs. Each wave crest and wave trough points from the upper part of the inclined wall support plate to the lower part of the inclined wall support plate. The corrugated plate on the inclined wall support plate makes up for the defect of insufficient inclination angle of the inclined wall support plate and provides an inclination angle addition for the inclined wall support plate.

2. The sludge hopper device for discharging sludge according to claim 1, characterized in that, The corrugated structure layer includes one layer of corrugated plate. The angle of the wave crest is 60 - 120°, and the wave trough is arc-shaped. The corrugated plate is laid along the upper surface of the inclined wall support plate, and shock-absorbing gaskets are provided between the wave trough of the corrugated plate and the inclined wall support plate. A number of fixing rings are provided on the inclined wall support plate, and the corrugated plate is bound to the fixing rings and thus fixed on the inclined wall support plate.

3. The sludge hopper device for discharging sludge according to claim 2, wherein, The radius of the wave trough of the corrugated plate is 50 - 70 mm, and the height difference between the wave crest and the wave trough is 200 - 250 mm. After the shock-absorbing gasket at the wave trough is pressed tightly, the distance between the wave trough and the inclined wall support plate is 5 - 10 mm. A gap is reserved between the top of the corrugated plate and the side wall of the sedimentation tank, so that when the corrugated plate vibrates, it does not collide with the side wall of the sedimentation tank.

4. The sludge hopper device for discharging sludge according to claim 1, characterized in that, The corrugated structure layer includes two layers of corrugated plates, which are stacked up and down. The wave crests and wave troughs of the two layers of corrugated plates correspond to each other. On the lower surface of each wave crest of the upper corrugated plate and the lower corrugated plate, a number of telescopic cross beams are evenly provided. The two ends of the telescopic cross beam abut against the two sides of the wave crest, for adjusting the angle of the wave crest. The wave trough of the lower corrugated plate is slidably connected to the guide rail groove through a shock-absorbing gasket. A number of guide rail grooves are horizontally arranged on the upper surface of the inclined wall support plate.

5. The sludge hopper device for discharging sludge according to claim 4, wherein, A number of telescopic vertical rods are evenly arranged under each wave crest of the lower corrugated plate, for extending out of the lower corrugated plate and adjusting the height of the upper corrugated plate. A number of telescopic vertical rods are evenly arranged on the upper surface of the inclined wall support plate along the length direction of the corresponding same wave crest, and the positions of the telescopic vertical rods do not coincide with the guide rail grooves. The bottom of the telescopic vertical rod is fixed on the inclined wall support plate, and an inverted U-shaped fixing bracket is provided at the top, for supporting the lower surface of the wave crest of the upper corrugated plate. A notch is provided at the position of the wave crest of the lower corrugated plate corresponding to the telescopic vertical rod, allowing the telescopic vertical rod to extend up and down.

6. The sludge hopper device for discharging sludge according to claim 5, characterized in that, For the upper corrugated plate, a number of upper telescopic cross beams are evenly arranged on the lower surface of the upper corrugated plate along the length direction of the corresponding same wave crest, and the positions of the upper telescopic cross beams correspond to the notch positions of the lower corrugated plate.

7. The sludge hopper device for discharging sludge according to claim 6, wherein, For the lower corrugated plate, a number of lower telescopic cross beams are evenly arranged on the lower surface of the lower corrugated plate along the length direction of the corresponding same wave crest, and the positions of the lower telescopic cross beams do not correspond to the notch positions.

8. The sludge hopper device for discharging sludge according to claim 7, characterized in that, The guide rail groove includes a flat part in the middle and arc parts on both sides. The arc part has an upward convex arc. A number of sliders are provided in the same guide rail groove. A shock-absorbing gasket is provided at the top of each slider, and each shock-absorbing gasket is correspondingly connected to a wave trough.

9. The sludge hopper device for discharging sludge according to claim 8, wherein The telescopic cross beams of the same wave crest gradually decrease in telescopic length in the order from top to bottom, so that the apex angle of the same wave crest gradually decreases from top to bottom. After several wave crests are matched, the width of the upper part of the corrugated plate is greater than that of the lower part, which conforms to the shape of the inclined wall support plate. The telescopic heights of the telescopic vertical rods corresponding to different wave crests of the upper corrugated plate at the same horizontal height are equal, making the upper corrugated plate straight.

10. The sludge hopper device for discharging sludge according to claim 9, characterized in that, The lower telescopic cross beam is arranged close to the notch. The apex angles at the upper and lower corresponding positions of the corresponding wave crests of the upper corrugated plate and the lower corrugated plate are the same, and the telescopic lengths of the upper telescopic cross beam and the lower telescopic cross beam corresponding to the upper and lower corresponding wave crests are equal.

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