Clearance-variable multiple trash holding system for sewage pit

Abstract

The utility model discloses a sewage pit variable clearance multiple trash holding system which comprises a combined limiting sliding groove, a combined platform and a combined intercepting net, the combined intercepting net comprises a fixed intercepting net and an adjusting intercepting net, and the fixed intercepting net and the adjusting intercepting net are identical in mesh clearance and overlapped front and back. The height of the adjusting lifting platform is increased, so that the adjusting intercepting net moves upwards relatively in the adjusting sliding groove, the mesh gap of the adjusting intercepting net and the mesh gap of the fixed intercepting net are staggered from each other from the bottom, and a variable gap area smaller than the original mesh gap is formed. According to the trash rack, a fixed gap intercepting net of an existing trash rack is changed, the filtering effect on fine particles with different particle sizes is enhanced, the size of the gap of the grating net can be adjusted in time according to requirements, and dirt with different sizes can be intercepted.

Description

Technical Field

[0001] This utility model belongs to the field of sewage pit interception technology, and in particular, it is a sewage pit variable gap multi-stage interception system. Background Technology

[0002] With the acceleration of urbanization, the pressure on drainage systems is constantly increasing. Without the filtration effect of sewage pit interception devices, sewage would be directly discharged into water bodies, leading to water pollution and ecosystem damage. Sewage pit interception devices are an important initial water treatment method, mainly employing physical interception, commonly using devices such as trash racks. These devices are typically installed at the inlet of sewage pumping stations or the beginning of sewage pipelines to intercept larger debris and waste, such as water plants and driftwood carried by the water flow, preventing them from entering subsequent treatment equipment, thus protecting the equipment and improving treatment efficiency. When sewage or debris enters the trash rack, it gradually sinks to the bottom of the rack due to the action of the barrier, while the water flows through the screen of the trash rack. The trapped pollutants are blocked and accumulated, achieving initial filtration of the waste. Subsequent collection and further separation and screening of residual pollutants are then carried out.

[0003] Traditional trash racks mostly use a fixed interception net design, meaning that the gap size of the grid is fixed and cannot be adjusted, and the particle size of the filtered dirt is also fixed. If the diameter of the dirt varies greatly, only the larger diameter dirt larger than the gap of the grid can be filtered out first. The filtration effect on small diameter fine particles is slightly insufficient, and it is impossible to make timely adjustments for dirt of different particle sizes. Utility Model Content

[0004] The purpose of this invention is to provide a variable-gap multi-stage debris interception system for sewage pits, which solves the technical problems of existing debris barriers that use fixed interception nets, have poor filtration effect on fine particulate matter, and cannot adjust the size of the mesh gaps in a timely manner, thus failing to intercept debris of different sizes.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A multi-stage, variable-gap sewage interception system for sewage pits includes at least one set of transversely arranged sections within the inlet channel. Each set comprises a combined limiting chute, which is symmetrically arranged laterally and fixedly connected to the sidewalls of the waterway on both sides of the inlet channel. The combined limiting chute includes a fixed chute and an adjusting chute, both of the same size and arranged parallel and closely attached to each other along the upstream and downstream inlet directions.

[0007] It also includes a combined platform embedded in the bottom of the combined limiting slide groove. The combined platform includes a fixed platform and an adjustable lifting platform. The fixed platform has a fixed height, while the adjustable lifting platform has an adjustable height. The initial minimum height of the adjustable lifting platform is the same as that of the fixed platform. The bottom surfaces of both the fixed platform and the adjustable lifting platform are fixedly connected to the bottom plate of the water inlet channel. The two ends of the fixed platform are embedded in the fixed slide groove, and the two ends of the adjustable lifting platform are embedded in the adjustable slide groove.

[0008] It also includes a combined interception net that is fixedly connected to the combined platform. The combined interception net includes a fixed interception net and an adjustable interception net that are parallel and closely attached to each other along the upstream and downstream water inlet direction. The two ends of the fixed interception net are embedded in the fixed sliding grooves on both sides, and the bottom surface of the fixed interception net is connected to the top surface of the fixed platform. The two ends of the adjustable interception net are embedded in the adjustable sliding grooves on both sides, and the bottom surface of the adjustable interception net is connected to the top surface of the adjustable lifting platform.

[0009] The fixed and adjustable interception nets are the same size, with the same mesh gap and overlapping front and back. As the height of the adjustable lifting platform increases, the adjustable interception net moves upward relative to the fixed interception net along the adjusting slide. At the same time, the mesh gap of the adjustable interception net shifts from the bottom to the mesh gap of the fixed interception net, forming a variable gap area that is smaller than the original mesh gap.

[0010] Fixed and adjustable interception nets have the same structure, both including the net body and a surrounding frame, which includes a bottom frame, side frames, and a top frame.

[0011] The adjustable lifting platform includes a connecting plate and a lifting bladder. The bottom edge of the adjustable interception net is connected to the top surface of the connecting plate, and the lifting bladder is fixed to the bottom surface of the connecting plate. A hydraulic pump station is provided at the top of the side wall of the water inlet channel, and the hydraulic pump station is connected to the lifting bladder through hydraulic oil pipes.

[0012] Two sets are installed parallel to each other in the upstream and downstream water intake direction in the water inlet channel, including a large gap interception sleeve set installed upstream and a small gap filter sleeve set installed downstream. The mesh gap of the combined interception net in the large gap interception sleeve set is larger than the mesh gap of the combined interception net in the small gap filter sleeve set.

[0013] The large-gap debris interception kit consists of a fixed large-gap debris interception net and a variable large-gap debris interception net, with diamond-shaped mesh openings.

[0014] The small-gap filter kit consists of a fixed large-gap filter and an adjustable large-gap filter, with circular mesh openings.

[0015] Both the fixed and adjustable interception nets are equipped with hanging rings at the top.

[0016] It also includes a lifting structure for the combined interception net. The lifting structure includes a horizontally arranged gantry and a winch. The width of the gantry is adapted to the width of the water inlet channel. The gantry includes two columns and a crossbeam. The column feet are movably set on the top of the side wall of the water inlet channel. The winch is fixed to the center of the top surface of the crossbeam. The lifting cable of the winch is connected to a hook adapted to the lifting ring.

[0017] The top of the side wall of the water inlet channel is equipped with slide rails in the upstream and downstream water inlet directions, and the column base is equipped with track wheels that slide in the slide rails.

[0018] The bottom outer sides of the two columns are symmetrically provided with gantry stabilizing limbs, and the end of each gantry stabilizing limb is provided with a limiting travel wheel that travels horizontally on the outer surface of the corresponding side water inlet channel sidewall.

[0019] Compared with the prior art, this utility model has the following features and beneficial effects:

[0020] This utility model discloses a multi-stage, variable-gap wastewater interception system for sewage pits. It comprises a combined platform and a combined interception net. The platform consists of a fixed platform and an adjustable lifting platform, on which the fixed and adjustable interception nets are installed respectively. When the fixed and adjustable interception nets are at the same height, their gaps are identical and overlap, creating a larger gap capable of intercepting larger debris. The adjustable interception net moves upward relative to the fixed net under the action of the adjustable lifting platform, causing the mesh gaps of the fixed and adjustable nets to shift, forming a variable-gap area with smaller mesh gaps than the original. This meets the need to filter smaller particles as needed, overcoming the limitation of a single fixed interception net that cannot adjust its gap size.

[0021] This invention features two sets of filters installed parallel to each other along the upstream and downstream water inlet channels. One set consists of a large-gap debris-blocking sleeve installed upstream, and a small-gap filter sleeve installed downstream. Both sets operate on the same principle, facilitating further filtration of even smaller particles. A temporary debris storage space is also formed between the two sets, aiding in the removal of debris filtered by the small-gap filter sleeve and preventing its clogging due to debris accumulation.

[0022] This utility model also includes a supporting lifting structure, which facilitates the installation of each interception net when needed.

[0023] This invention changes the fixed-gap interception mesh of existing trash racks by installing more than one set, thereby enhancing the filtration effect on fine particles of different sizes. The mesh size can be adjusted in a timely manner according to needs to intercept trash of different sizes. Attached Figure Description

[0024] The present invention will now be described in further detail with reference to the accompanying drawings.

[0025] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of this utility model.

[0026] Figure 2 yes Figure 1 A partial structural diagram.

[0027] Figure 3 This is a schematic diagram of the structure of each interception net in this utility model.

[0028] Figure 4 This is a schematic diagram of the overall structure of Embodiment 2 of this utility model.

[0029] Attached reference numerals: 1 - Water inlet channel, 2 - Combined limiting slide, 21 - Fixed slide, 22 - Adjustable slide, 3 - Fixed platform, 4 - Adjustable lifting platform, 41 - Connecting plate, 42 - Lifting bladder, 5 - Fixed interception net, 6 - Adjustable interception net, 7 - Interception net body, 8 - Frame, 81 - Bottom frame, 82 - Side frame, 83 - Top frame, 9 - Hydraulic pump station, 10 - Hydraulic oil pipe, 11 - Large gap debris interception kit, 11 1 - Large gap fixed debris barrier, 112 - Large gap adjustable debris barrier, 12 - Small gap filter assembly, 121 - Large gap fixed filter, 122 - Large gap adjustable filter, 13 - Lifting ring, 14 - Lifting structure, 141 - Gantry, 142 - Winch, 143 - Column, 144 - Crossbeam, 145 - Hook, 146 - Slide rail, 147 - Track wheel, 148 - Gantry stabilizer, 149 - Limiting travel wheel. Detailed Implementation

[0030] See Example 1 Figure 1-3 As shown, a multi-stage wastewater trap system with variable gaps is provided in the inlet channel 1 with two sets arranged horizontally at intervals along the upstream and downstream water inlet directions. The system includes a large gap wastewater trap set 11 set in the upstream and a small gap filter set 12 set in the downstream. The mesh gap of the combined interception net in the large gap wastewater trap set 11 is larger than the mesh gap of the combined interception net in the small gap filter set 12.

[0031] Each set includes a combined limiting slide 2, which is symmetrically arranged horizontally and fixedly connected to the side walls of the water inlet channel 1 on both sides. The combined limiting slide 2 includes a fixed slide 21 and an adjusting slide 22, which are parallel and closely attached to each other along the upstream and downstream water inlet directions and are of the same size. It also includes a combined platform embedded in the bottom of the combined limiting slide 2. The combined platform includes a fixed platform 3 and an adjusting lifting platform 4. The height of the fixed platform 3 is fixed, and the height of the adjusting lifting platform 4 is adjustable. The initial minimum height of the adjusting lifting platform 4 is the same as that of the fixed platform 3. The bottom surfaces of the fixed platform 3 and the adjusting lifting platform 4 are fixedly connected to the bottom plate of the water inlet channel 1. The two ends of the fixed platform 3 are embedded in the fixed slide 21, and the two ends of the adjusting lifting platform 4 are embedded in the adjusting slide 22. It also includes a combined interception net that is fixedly connected to the combined platform. The combined interception net includes a fixed interception net 5 and an adjustable interception net 6 that are parallel and closely attached to each other along the upstream and downstream water inlet direction. The two ends of the fixed interception net 5 are embedded in the fixed sliding grooves 21 on both sides, and the bottom surface of the fixed interception net 5 is connected to the top surface of the fixed platform 3. The two ends of the adjustable interception net 6 are embedded in the adjustable sliding grooves 22 on both sides, and the bottom surface of the adjustable interception net 6 is connected to the top surface of the adjustable lifting platform 4.

[0032] The fixed interception net 5 and the adjustable interception net 6 are the same size. The mesh gaps of the fixed interception net 5 and the adjustable interception net 6 are the same and overlap one after the other. When the height of the adjustable lifting platform 4 is raised, the adjustable interception net 6 moves upward relative to the adjusting slide 22. At the same time, the mesh gap of the adjustable interception net 6 is misaligned with the mesh gap of the fixed interception net 5 from the bottom, forming a variable gap area that is smaller than the original mesh gap.

[0033] In this embodiment, when the height of the adjustable lifting platform 4 is at its lowest, the adjustable lifting platform 4 is at the same height as the fixed platform 3, and the gaps between the fixed interception net 5 and the adjustable interception net 6 overlap. At this time, the gap formed by the two interception nets is relatively large, which can intercept larger debris. When the adjustable interception net 6 is raised, the gaps between the two interception nets intersect, making the gaps formed by the nets smaller, thereby intercepting smaller debris, thus making up for the defect that a single fixed interception net cannot adjust the gap size.

[0034] In this embodiment, the purpose of setting up a large-gap intercepting sleeve 11 and a downstream small-gap filtering sleeve 12 is to create a temporary storage space for contaminants between them, facilitating cleaning and preventing the accumulation of contaminants filtered by the small-gap filtering sleeve 12, which could lead to clogging. The large-gap intercepting sleeve 11 consists of a large-gap fixed intercepting net 111 and a large-gap adjustable intercepting net 112, with diamond-shaped mesh openings. The small-gap filtering sleeve 12 consists of a large-gap fixed filter net 121 and a large-gap adjustable filter net 122, with circular mesh openings. Different shaped filter nets can further filter impurities of different particle sizes.

[0035] The fixed interception net 5 and the adjustable interception net 6 have the same structure, both including an interception net body 7 and a surrounding frame 8. The frame 8 includes a bottom frame 81, side frames 82, and a top frame 83. In this embodiment, the lifting of the adjustable lifting platform 4 is achieved through a connecting plate 41 and a lifting bladder 42. The adjustable lifting platform 4 includes a connecting plate 41 and a lifting bladder 42. The bottom frame 81 of the adjustable interception net 6 is connected to the top surface of the connecting plate 41, and the lifting bladder 42 is fixed to the bottom surface of the connecting plate 41. A hydraulic pump station 9 is provided at the top of the side wall of the water inlet channel 1. The hydraulic pump station 9 is connected to the lifting bladder 42 through hydraulic oil pipes 10. The hydraulic pump station 9 is connected to the two lifting bladders 42 respectively through two independently controlled hydraulic oil pipes 10. The lifting bladder 42 is made of rubber and has a longitudinal corrugated structure. When the hydraulic pump station 9 pressurizes and injects hydraulic oil into the lifting bladder 42, the height of the lifting bladder 42 is raised. When the hydraulic oil is depressurized and returns to the hydraulic pump station 9, the height of the lifting bladder 42 is lowered, thereby changing the height of the adjusting lifting platform 4. The side frame 82 of the adjusting interception net 6 slides in the adjusting groove 22, thereby changing the relative height of the adjusting interception net 6.

[0036] See Example 2 Figure 4 As shown, the top frame 83 of the fixed interception net 5 and the adjustable interception net 6 are provided with lifting rings 13. The system in this embodiment also includes a lifting structure 14 for the combined interception net. The lifting structure includes a horizontally arranged gantry 141 and a winch 142. The width of the gantry 141 is adapted to the width of the water inlet channel 1. The gantry 141 includes two columns 143 and a crossbeam 144. The column feet of the columns 143 are movably set on the top of the side wall of the water inlet channel 1. The winch 142 is fixed to the center of the top surface of the crossbeam 144. The lifting cable end of the winch 142 is connected to a hook 145 adapted to the lifting ring 13. Two lifting rings 13 are provided on each interception net. The hooks 145 can be set in an inverted V shape.

[0037] The top of the side wall of the water inlet channel 1 and the upstream and downstream water inlet directions are provided with slide rails 146. The column base of the column 143 is provided with track wheels 147 that slide in the slide rails 146. The track wheels 147 are equipped with a braking structure, so that they can move back and forth along the slide rails 146 on the side walls of the waterway on both sides of the water inlet channel 1, thereby hoisting and installing each net in the combined interception net.

[0038] To further ensure the stability of the lifting mechanism, gantry stabilizers 148 are symmetrically provided on the outer bottom of the two columns 143. The gantry stabilizers 148 are inverted L-shaped arms, and their upper ends are fixedly connected to the columns 143. Each gantry stabilizer 148 has a limiting wheel 149 at its lower end that travels horizontally on the outer surface of the side wall of the corresponding water inlet channel 1.

Claims

1. A sewage pit variable gap multi-blocking system, at least one set is provided in the water inlet channel (1) transversely, characterized in that: each set comprises a combined limiting chute (2) which is symmetrically provided transversely, fixedly connected to the water channel side walls on both sides of the water inlet channel (1), the combined limiting chute (2) comprises a fixed chute (21) and an adjusting chute (22) which are parallel and closely arranged along the upstream and downstream water inlet directions and have the same size, further comprising a combined platform corresponding to the embedded bottom of the combined limiting chute (2), the combined platform comprises a fixed platform (3) and an adjusting lifting platform (4), the height of the fixed platform (3) is fixed, the height of the adjusting lifting platform (4) is adjustable, the initial lowest height of the adjusting lifting platform (4) is the same as that of the fixed platform (3), the bottom surfaces of the fixed platform (3) and the adjusting lifting platform (4) are fixedly connected to the water channel bottom plate of the water inlet channel (1), the two ends of the fixed platform (3) are embedded in the fixed chute (21), and the two ends of the adjusting lifting platform (4) are embedded in the adjusting chute (22), further comprising a combined blocking net corresponding to the fixed connection on the combined platform, the combined blocking net comprises a fixed blocking net (5) and an adjusting blocking net (6) which are parallel and closely arranged along the upstream and downstream water inlet directions, the two ends of the fixed blocking net (5) are embedded in the fixed chute (21) on both sides, and the bottom surface of the fixed blocking net (5) is connected to the top surface of the fixed platform (3), the two ends of the adjusting blocking net (6) are embedded in the adjusting chute (22) on both sides, and the bottom surface of the adjusting blocking net (6) is connected to the top surface of the adjusting lifting platform (4), the fixed blocking net (5) and the adjusting blocking net (6) have the same size, the mesh gaps of the fixed blocking net (5) and the adjusting blocking net (6) are the same and overlap front and back, the height of the adjusting lifting platform (4) is raised to make the adjusting blocking net (6) move upward in the adjusting chute (22), and at the same time, the mesh gaps of the adjusting blocking net (6) start to be dislocated from the bottom with the mesh gaps of the fixed blocking net (5) to form a variable gap area which is smaller than the original mesh gap.

2. The variable gap multi-catchment sewage pit system of claim 1, wherein: The fixed blocking net (5) and the adjusting blocking net (6) have the same structure, both comprising a blocking net body (7) and a surrounding frame (8), the frame (8) comprises a bottom frame (81), a side frame (82) and a top frame (83).

3. The variable gap multi-catchment sewage pit system of claim 2, wherein: The adjusting lifting platform (4) comprises a connecting plate (41) and a lifting bag (42), the bottom frame (81) of the adjusting blocking net (6) is connected to the top surface of the connecting plate (41), the lifting bag (42) is fixed to the bottom surface of the connecting plate (41), the top of the water inlet channel (1) side wall is provided with a hydraulic pump station (9), and the hydraulic pump station (9) is connected to the lifting bag (42) through a hydraulic oil pipe (10).

4. The variable gap multi-catchment sewage pit system of claim 1, wherein: Two sets are provided in the water inlet channel (1) along the upstream and downstream water inlet directions, comprising a large gap blocking set group (11) arranged upstream and a small gap filtering set group (12) arranged downstream, and the mesh gaps of the combined blocking net in the large gap blocking set group (11) are larger than those of the combined blocking net in the small gap filtering set group (12).

5. The variable gap multi-catchment sewage pit system of claim 4, wherein: The combined interception net in the large-gap trash rack set (11) is respectively a large-gap fixed trash rack (111) and a large-gap adjustable trash rack (112), and the mesh gap is a rhombus.

6. The variable gap multi-catchment sewage pit system of claim 4 or 5, wherein: The combined interception net in the small-gap filter set (12) is respectively a large-gap fixed filter net (121) and a large-gap adjustable filter net (122), and the mesh gap is a circle.

7. The variable gap multi-deck interceptor system for sewage sumps of claim 1, wherein: The fixed interception net (5) and the adjustable interception net (6) are each provided with a lifting ring (13) at the top.

8. The variable gap multi-catchment sewage pit system of claim 7, wherein: The lifting structure (14) of the combined interception net is also included, and the lifting structure includes a portal frame (141) and a winch (142), the width of the portal frame (141) is adapted to the width of the water inlet channel (1), the portal frame (141) includes two upright columns (143) and a cross beam (144), the feet of the upright columns (143) are respectively movably arranged at the top of the side wall of the water inlet channel (1), the winch (142) is fixed to the top surface of the cross beam (144), and the end of the lifting rope of the winch (142) is connected with a hook (145) adapted to the lifting ring (13).

9. The variable gap multi-catchment sewage pit system of claim 8, wherein: The top of the side wall of the water inlet channel (1) and the upstream and downstream water inlet directions are provided with sliding rails (146), and the feet of the upright columns (143) are provided with track wheels (147) sliding in the sliding rails (146).

10. The variable gap multi-catchment sewage pit system of claim 8 or 9, wherein: The outer sides of the bottoms of the two upright columns (143) are respectively and symmetrically provided with portal frame stabilizing limbs (148), and the ends of each side of the portal frame stabilizing limbs (148) are provided with limiting walking wheels (149) walking horizontally on the outer surface of the side wall of the water inlet channel (1) on the corresponding side.

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