CN222976046U - Gravity dredging device for wharf drainage ditch - Google Patents

Abstract

The utility model discloses a gravity silt removal device for a dock drainage ditch, comprising a primary drainage ditch, a secondary drainage ditch is arranged at the water outlet end of the primary drainage ditch, a sand settling well is arranged at the water outlet end of the secondary drainage ditch, a blocking component is arranged at the water inlet end of the sand settling well, a cleaning component is arranged at the connection between the primary drainage ditch and the secondary drainage ditch, and the cleaning component comprises an interception dam arranged at the connection between the primary drainage ditch and the secondary drainage ditch, and primary silt removal holes and secondary silt removal holes are opened on the side of the interception dam for flushing silt; the utility model is provided with a primary silt removal hole and a secondary silt removal hole by the interception dam at the connection between the primary drainage ditch and the secondary drainage ditch, the primary drainage ditch makes water flow out from the primary silt removal hole, the water flow cross section suddenly shrinks when the water flow passes through the silt removal hole, the water flow is pressurized, and the silt layer at the bottom of the secondary drainage ditch is flushed, so as to realize silt removal and avoid manual cleaning of accumulated silt.

Description

Gravity dredging device for wharf drainage ditch

Technical Field

The utility model relates to the technical field of gravity dredging, in particular to a gravity dredging device for a wharf drainage ditch.

Background

Along with the continuous development of port and dock engineering, the drainage ditch is taken as an important component part thereof, and plays an important role in draining and guaranteeing the safety of the dock, however, due to long-term erosion and precipitation of pollutants, the bottom of the drainage ditch often has a siltation phenomenon, the drainage effect and the normal operation of dock facilities are seriously influenced, and in order to solve the problem of siltation of the drainage ditch, a novel gravity desilting device for the dock is needed.

Disclosure of utility model

The utility model aims to provide a gravity dredging device for a wharf drainage ditch, which aims to solve the problems in the background technology.

The gravity dredging device for the wharf drainage ditch comprises a first-stage drainage ditch, wherein a second-stage drainage ditch is arranged at the water outlet end of the first-stage drainage ditch, a sand sedimentation well is arranged at the water outlet end of the second-stage drainage ditch, a blocking member for blocking garbage in water flow is arranged at the water inlet end of the sand sedimentation well, a cleaning member for cleaning sludge at the bottom of the second-stage drainage ditch is arranged at the joint of the first-stage drainage ditch and the second-stage drainage ditch, the cleaning member comprises an interception dam arranged at the joint of the first-stage drainage ditch and the second-stage drainage ditch, and a first-stage dredging hole and a second-stage dredging hole for flushing sludge are formed at the side of the interception dam.

Preferably, the first-stage dredging holes are arranged at the tops of the second-stage dredging holes.

Preferably, the blocking member comprises limiting slots, the limiting slots are symmetrically arranged on the inner wall of the water outlet end of the secondary drainage ditch, and the top of each limiting slot is connected with a grid in a penetrating mode.

Preferably, the top of the grid is fixedly connected with a handle.

Preferably, the top of the primary drainage ditch is provided with a primary sealing cover plate, and the top of the secondary drainage ditch is provided with a secondary sealing cover plate.

Preferably, the top of the sand trap is provided with an inspection cover.

The utility model has the technical effects and advantages that:

According to the utility model, the interception dam is arranged at the joint of the primary drainage ditch and the secondary drainage ditch, the primary dredging holes and the secondary dredging holes arranged at the side of the interception dam are utilized to drain water, the primary drainage ditch flows water out from the primary dredging holes to wash out the silt layer at the bottom of the secondary drainage ditch, the blocking member at the tail end of the secondary drainage ditch intercepts sundries in the washed sewage, the secondary dredging holes are used as standby drainage holes, excessive rainwater is discharged when the rainfall is excessive, the design utilizes the water flow section when the water flow passes through the dredging holes to suddenly reduce the water flow to pressurize, and the silt and sundries at the bottom of a slope are brought to a water outlet, thereby realizing dredging and avoiding manual cleaning of accumulated silt.

Drawings

FIG. 1 is a cross-sectional view of the entire present utility model.

Fig. 2 is a top view of the entire present utility model.

Fig. 3 is a front view of the grille of the present utility model.

In the figure, 1, a primary drainage ditch; 2, a secondary drainage ditch, 3, a primary sealing cover plate, 4, a secondary sealing cover plate, 5, an interception dam, 501, a primary dredging hole, 502, a secondary dredging hole, 6, a limiting slot, 7, a grid, 701, a handle, 8, a sand-settling well, 801 and an inspection cover.

Detailed Description

The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.

The utility model provides a gravity dredging device for a wharf drainage ditch, which is shown in figures 1-3, and comprises a primary drainage ditch 1, wherein a secondary drainage ditch 2 is arranged at the water outlet end of the primary drainage ditch 1, and a sand sedimentation well 8 is arranged at the water outlet end of the secondary drainage ditch 2;

It should be noted that, the hydraulic gradient of the primary drainage ditch 1 is greater than the hydraulic gradient of the secondary drainage ditch 2, a hole is formed on the side of the sand-settling well 8, a gap at the joint of the hole and the secondary drainage ditch 2 is sealed by adopting concrete pouring, and an inspection cover 801 is arranged at the top of the sand-settling well 8, so that a worker can conveniently enter the sand-settling well 8 to clean the sludge regularly;

The water inlet end of the sand sedimentation well 8 is provided with a blocking member for blocking garbage in water flow;

Specifically, the blocking member comprises a limiting slot 6, the limiting slot 6 is symmetrically arranged on the inner wall of the water outlet end of the secondary drainage ditch 2, the top of the limiting slot 6 is connected with a grid 7 in a penetrating way, and the top of the grid 7 is fixedly connected with a lifting handle 701;

It should be noted that, the limiting slot 6 is made of channel steel, and is fixed to the inner wall of the secondary drainage ditch 2 by concrete pouring, the grating 7 is used for intercepting sundries in sewage, so that the sundries are prevented from falling into the sand-settling well 8, the handle 701 and the grating 7 are made of stainless steel, and are fixed into a whole by welding, so that the handle 701 is convenient for cleaning the grating 7, and the sundries are prevented from blocking, thus influencing the circulation of water;

A cleaning member for cleaning the sludge at the bottom of the secondary drainage ditch 2 is arranged at the joint of the primary drainage ditch 1 and the secondary drainage ditch 2;

Specifically, the cleaning member comprises an interception dam 5 arranged at the joint of the primary drainage ditch 1 and the secondary drainage ditch 2, and a primary dredging hole 501 and a secondary dredging hole 502 for flushing sludge are formed on the side of the interception dam 5;

It should be noted that, the primary dredging hole 501 is disposed at the top of the secondary dredging hole 502, the bottom inner wall of the secondary dredging hole 502 is located on the same slope with the slope bottom of the secondary drainage ditch 2, because the hydraulic gradient of the primary drainage ditch 1 is greater than that of the secondary drainage ditch 2, sludge can be accumulated at the slope bottom of the secondary drainage ditch 2, and the water level line in the primary drainage ditch 1 is raised due to the blocking effect of the sludge on the secondary dredging hole 502, and the water cross-section area through the primary dredging hole 501 is suddenly reduced due to the gravitational potential energy of water, so that the water flow velocity flowing out of the primary dredging hole 501 is increased, and the sludge layer of the secondary drainage ditch 2 is washed, thereby achieving the purpose of dredging;

When the precipitation amount is too large, the second-stage dredging holes 502 are used as standby drain holes, water flow can break through the blockage of a silt layer and flow out through the second-stage dredging holes 502, and the water flow turbulence at the top of the second-stage drain ditch 2 is caused by the mixing of different flow-rate water flowing out of the first-stage dredging holes 501 and the second-stage dredging holes 502, so that the flushing and cleaning of the silt layer are accelerated;

The top of the primary drainage ditch 1 is provided with a primary sealing cover plate 3, the top of the secondary drainage ditch 2 is provided with a secondary sealing cover plate 4, the primary sealing cover plate 3 and the secondary sealing cover plate 4 are both in hollow design, and rainwater and the like can flow into the primary drainage ditch 1 and the secondary drainage ditch 2 conveniently;

in the in-service use, through being provided with interception dam 5 in the junction of one-level escape canal 1 and second grade escape canal 2, utilize interception dam 5 limit side to set up one-level desilting hole 501 and second grade desilting hole 502, carry out the drainage operation, one-level escape canal 1 flows out from one-level desilting hole 501 with rivers, wash the silt layer of second grade escape canal 2 bottoms, the terminal barrier member of second grade escape canal 2 intercepts the debris in this scour sewage, avoid it to go into the sand trap 8, the water section when this design utilizes rivers to pass through the desilting hole suddenly reduces, pressurizes rivers, carry silt and debris at the second grade escape canal 2 slope bottom to delivery port department, realize the desilting, avoided manual cleaning piled silt.

It should be noted that the foregoing description is only a preferred embodiment of the present utility model, and although the present utility model has been described in detail with reference to the foregoing embodiments, it should be understood that modifications, equivalents, improvements and modifications to the technical solution described in the foregoing embodiments may occur to those skilled in the art, and all modifications, equivalents, and improvements are intended to be included within the spirit and principle of the present utility model.

Claims (6)

1. A gravity dredging device for a dock drainage ditch, comprising a primary drainage ditch (1), characterized in that a secondary drainage ditch (2) is provided at the outlet end of the primary drainage ditch (1), a sand settling well (8) is provided at the outlet end of the secondary drainage ditch (2), a blocking member for intercepting garbage in the water flow is provided at the water inlet end of the sand settling well (8), a cleaning member for cleaning sludge at the bottom of the secondary drainage ditch (2) is provided at the connection between the primary drainage ditch (1) and the secondary drainage ditch (2), the cleaning member comprises an intercepting dam (5) provided at the connection between the primary drainage ditch (1) and the secondary drainage ditch (2), and a primary dredging hole (501) and a secondary dredging hole (502) for flushing sludge are provided on the side of the intercepting dam (5). 2. A gravity dredging device for a dock drainage ditch according to claim 1, characterized in that the first-level dredging hole (501) is arranged on the top of the second-level dredging hole (502). 3. A gravity dredging device for a dock drainage ditch according to claim 1, characterized in that the blocking member includes a limiting slot (6), the limiting slot (6) is symmetrically arranged on the inner wall of the water outlet end of the secondary drainage ditch (2), and the top of the limiting slot (6) is interspersed with a grille (7). 4. A gravity dredging device for a dock drainage ditch according to claim 3, characterized in that a handle (701) is fixedly connected to the top of the grille (7). 5. A gravity dredging device for a dock drainage ditch according to claim 1, characterized in that a primary closed cover plate (3) is provided on the top of the primary drainage ditch (1), and a secondary closed cover plate (4) is provided on the top of the secondary drainage ditch (2). 6. A gravity dredging device for a dock drainage ditch according to claim 1, characterized in that an inspection cover (801) is provided on the top of the sand settling well (8).