CN216428495U - Drainage mouth cut-off equipment in dark culvert - Google Patents

Abstract

The utility model relates to a sewage discharge port cut-off device in a hidden culvert, which comprises a current situation hidden culvert sewage discharge pipeline, a cut-off main pipe and a hidden culvert, and the cut-off device comprises a cut-off branch pipe and a concrete water retaining weir; the bottom of the intercepting branch pipe is horizontally connected and arranged at the bottom of the current dark culvert sewage discharge pipeline; the outlets of the intercepting branch pipes are discharged into the intercepting main pipe arranged at the bottom of the concealed culvert; the concrete water retaining weir is closely attached to the inner wall of the current situation dark culvert sewage discharge pipeline to fix the cut-off branch pipe; the concrete water retaining weir is arranged to enclose the intercepting branch pipe; the upper part of the concrete water retaining weir is level with the top of the intercepting branch pipe, the outer part of the concrete water retaining weir is level with the current situation dark culvert sewage pipeline, and the inner part of the concrete water retaining weir is level with the pipe orifice of the intercepting branch pipe. The utility model has the advantages of simple structure, no need of external power drive, little social influence, strong construction operability, convenient maintenance and the like, and has instant effect on pollution treatment.

Description

Drainage mouth cut-off equipment in dark culvert

Technical Field

The utility model belongs to the technical field of the drainage, specifically be a sewage discharge opening cut-off equipment in dark culvert.

Background

In the last century, the urban drainage system is limited by economic conditions and basically a set of pipe network system, namely a combined drainage system. The tail end of the confluence pipeline is directly discharged into a natural river channel, the river channel pollution is increasingly serious along with the increase of population, the naturally flowing river channel is covered and transformed into a hidden culvert for improving the environment, a gate is arranged at the junction of the hidden culvert and the open channel, and a sewage intercepting pipeline intercepts mixed sewage and enters a sewage plant. Therefore, a typical drainage channel, namely a confluence dark culvert, in the old urban area today is formed, the confluence dark culvert receives sewage in dry seasons, and the confluence dark culvert is still a drainage channel in the urban area in rainy seasons, so that the overflow sewage causes serious pollution to the downstream river water environment in the rainfall period.

At present, the main aim of treatment is to recover a confluence hidden culvert into a clear water channel, so the main pollution treatment measure at present is to implement a pollution-cleaning and shunting project, and a sewage-intercepting pipeline and a catch basin are built along the hidden culvert, but the treatment effect is not ideal. The reason for this summary is mainly: firstly, the partial hidden culvert section has no construction of sewage intercepting pipelines and intercepting wells due to the large difficulty in building, pressing and removing the house; secondly, the drain port is hidden, and the sewage interception pipe is in leak connection; thirdly, the initial rainwater pollution concentration of the rainwater drainage port is higher, and no measure is taken by a sewage intercepting pipeline; and fourthly, sewage is still discharged into a dark culvert on a fine day due to the misconnection of the rainwater and sewage pipes.

The utility model discloses a chinese patent application No. 201921202685.2's utility model discloses a defeated device of damming along river discharge opening, including precast concrete spare and closure plate, the spout with closure plate looks adaptation is seted up to the middle-end at precast concrete spare inner chamber top, water drainage tank has been seted up to the middle-end on the positive surface of precast concrete spare, the bottom of closure plate surface and the internal surface sliding connection of spout, the outlet has been seted up to the positive surperficial lower extreme of closure plate, the perpendicular bull stick of middle-end fixedly connected with at the closure plate back. The utility model discloses a cooperation of motor, screw rod, swivel nut, hollow slide bar and perpendicular bull stick is used, through the rotation of closure plate, carries out the shutoff to water drainage tank, from having reached the purpose that conveniently dams, uses through the cooperation of closure plate, water drainage tank and outlet, through the rotation of closure plate, adjusts the crossing area of outlet and water drainage tank to reach the purpose of being convenient for adjust the size of damming flow.

The above prior art solutions have the following drawbacks: the parts are too complex in structure, the requirement on maintenance in practical application is high, and an external power supply is required for driving; the expected purpose is to realize flow control, and the requirement of high precision on the flow in municipal drainage is not required; it can only set up in open canal section, and dark culvert section row mouth can't be under construction and the easy corruption of dark moist environment damages spare part. Therefore, a cut-off device at a discharge port inside a hidden culvert is provided.

Disclosure of Invention

To the problem that exists is administered to current confluence hidden culvert drain, in order to overcome prior art's construction difficulty, social influence big, maintain the requirement high, cut dirty effect defect such as not obvious, the utility model provides a drain cut-off equipment in hidden culvert.

The utility model adopts the following technical scheme to realize.

A sewage discharge port cut-off device in a hidden culvert comprises a current situation hidden culvert sewage discharge pipeline 3, a cut-off main pipe 4 and a hidden culvert 5, the cut-off device comprises a cut-off branch pipe 1 and a concrete water retaining weir 2; the bottom of the intercepting branch pipe 1 is horizontally connected and arranged at the bottom of the current dark culvert sewage discharge pipeline 3; the outlets of the intercepting branch pipes 1 are discharged into the intercepting main pipe 4 arranged at the bottom of the concealed culvert 5; the concrete water retaining weir 2 is closely attached to the inner wall of the current situation dark culvert sewage discharge pipeline 3 to fix the cut-off branch pipe 1; the concrete water retaining weir 2 is arranged to enclose the intercepting branch pipe 1; the upper part of the concrete water retaining weir 2 is level with the top of the intercepting branch pipe 1, the outer part is level with the current situation dark culvert sewage pipeline 3, and the inner part is level with the pipe orifice of the intercepting branch pipe 1.

Further, branch pipe 1 that dams stretch into the current situation and secretly contain 3 mouth of pipe degree of depth of sewage pipes and set up to one time of 1 external diameter of pipe of branch pipe that dams, 1 external diameter of pipe of branch pipe that dams is confirmed according to the current situation and is set up to more than 100mm and not more than the current situation and secretly contain 3 pipe internal diameters of sewage pipes and half.

Further, the utility model discloses concrete retaining weir 2 material is C20 concrete, and the branch pipe 1 material that dams is thickening PVC-U tubular product.

Further, the intercepting device of the utility model comprises a steel grating 6, wherein the steel grating 6 is vertically and fixedly arranged in the water inlet direction of the pipe orifice of the intercepting branch pipe 1 towards the current situation dark culvert sewage pipeline 3 by 10-15 cm; the steel grating 6 is arc-shaped, the radius of the steel grating is the same as that of the current situation hidden culvert sewage discharge pipeline 3, the arc edge is tightly attached to the inner wall of the pipe, and the top of the steel grating 6 is level with the top of the concrete water retaining weir 2.

Further, steel grating 6 constitute by the welding of diameter 5 mm's second grade screw thread reinforcing bar net, the reinforcing bar surface is provided with the anticorrosive coating, the clear distance of adjacent reinforcing bar is 2-3 cm.

Further, current situation dark culvert sewage pipes 3 respectively implant two expansion bolts 7 in the inside pipe wall both sides of the 6 positions of the steel grating of the installation of planning, 7 intervals of expansion bolts and 6 thickness looks adaptations of steel grating of every side, 6 vertical insertion expansion bolts 7 between of steel grating.

Further, it is further characterized in that the cut-off device is provided with a ladder 8 for maintenance on the wall of the hidden culvert 5, and an inspection well shaft 9 and a well lid 10 are arranged on the top of the hidden culvert 5.

The utility model has the advantages that,

1. through arranging cut-off equipment in the inside row's mouth department of culvert secretly, can be quick direct collection implement the dirty pollution sources that are difficult to cover behind the reposition of redundant personnel engineering of rain, this pollution sources include the sewage that secretly arranges to miss to connect, the sewage that the dirty pipe of rain misconnected, artificially empty the domestic sewage that gets into the inlet for stom water, the initial stage rainwater that the rainfall initial stage converges etc. and the effect of treating pollution is immediately seen.

2. Through the arrangement of the concrete water retaining weir, the dry season sewage can be collected, the discharge of excessive rainwater in the rainy period can be ensured, and the ground water immersion is avoided.

3. The steel grating is arranged, so that garbage sundries can be prevented from blocking the intercepting branch pipe, and the steel grating is designed to be 10-15cm away from the inlet of the intercepting branch pipe so that sewage can still enter the intercepting branch pipe after passing over the grating when the grating cannot be cleaned in time; the intercepting branch pipe is made of PVC-U pipe materials, so that corrosion can be effectively prevented.

4. The utility model discloses an intercepting device has in the dark culvert construction convenience, construction period social influence little, simple structure, need not plus power, maintenance cost multiple advantage such as low.

Drawings

The invention will be further explained with reference to the drawings and the detailed description.

Figure 1 is a structural drawing of the sewage draining exit cut-off device of the utility model.

Fig. 2 is a sectional view taken along line a-a of fig. 1.

Fig. 3 is a sectional view taken along line B-B of fig. 1.

Fig. 4 is a cross-sectional view of fig. 1 taken along line C-C.

In the figure: 1-intercepting branch pipe, 2-concrete water retaining weir, 3-current hidden culvert sewage discharge pipeline, 4-intercepting main pipe, 5-hidden culvert, 6-steel grating, 7-expansion bolt, 8-ladder stand, 9-inspection shaft and 10-well cover.

Detailed Description

In order to further understand the contents, features and effects of the present invention, the following embodiments are exemplified and the following detailed description is made with reference to the accompanying drawings.

Please refer to fig. 1, fig. 2, fig. 3, and fig. 4.

The utility model provides a sewage discharge port cut-off equipment in dark culvert: the cut-off equipment includes that branch pipe 1, concrete catch weir 2 cut off, 1 socle butt of branch pipe 1 of cutting off installs in the current situation secretly contains 3 bottoms of sewage pipes, 1 export row of branch pipe of cutting off arranges in the main pipe 4 that cuts off of 5 bottoms of secretly containing, concrete catch weir 2 seals branch pipe 1 of cutting off and will cut off branch pipe 1 with 3 inner walls of current situation secretly contains sewage pipes and closely paste, can improve the stability of branch pipe of cutting off.

In this embodiment, specifically: the upper part of the concrete water retaining weir 2 is level with the top of the intercepting branch pipe 1, the outer part is level with the current situation dark culvert sewage pipeline 3, and the inner part is level with the pipe orifice of the intercepting branch pipe 1. The purpose is that the sewage volume when intercepting the full flow of branch pipe that dams is the upper limit when fixed branch pipe that dams, and the overflow as soon as possible of excess rainwater.

In this embodiment, specifically: the depth of the pipe orifice of the intercepting branch pipe 1 extending into the current situation dark culvert sewage discharge pipeline 3 is one time of the external diameter of the pipe orifice of the intercepting branch pipe 1, so that the construction is convenient and the intercepting branch pipe is stable; the outer diameter of the intercepting branch pipe 1 is determined to be more than 100mm and not more than one half of the inner diameter of the current concealed culvert sewage pipeline 3 according to the current sewage flow of the concealed culvert sewage pipeline 3, and the factors of sewage flow, blockage prevention, reduction of influence on rainwater discharge and the like are mainly considered.

In this embodiment, specifically: the concrete water retaining weir 2 is made of C20 concrete, and the influence of sewage washing is met; the intercepting branch pipe 1 adopts thickened PVC-U pipe materials to ensure corrosion resistance.

In this embodiment, specifically: the cut-off equipment still includes steel grating 6, and steel grating 6 is installed perpendicularly and is dammed 1 mouth of pipe of branch pipe and secretly contain sewage pipes 3 to the present situation and come the water direction in 10cm, and the purpose is that the sewage still gets into the branch pipe that dams after can crossing the grid when failing in time to clear up the grid.

In this embodiment, specifically: the steel grating 6 is bow-shaped, the radius of the steel grating is the same as that of the current situation hidden culvert sewage discharge pipeline 3, the arc edge is tightly attached to the inner wall of the pipe, and the top of the steel grating 6 is level with the top of the concrete water retaining weir 2, so that the aim of conveniently intercepting sundries to avoid blocking of the intercepting branch pipe is fulfilled, and the influence on rainwater overflow sections is reduced to the greatest extent.

In this embodiment, specifically: the steel grating 6 is welded by adopting a two-stage threaded reinforcing steel bar grid with the diameter of 5mm, the outer surface of the reinforcing steel bar is subjected to corrosion prevention treatment, the net distance of the reinforcing steel bar is 2cm, meshes of the reinforcing steel bar are not too dense, so that garbage is intercepted as a main object, and the cleaning frequency of the steel grating is reduced.

In this embodiment, specifically: two expansion bolts 7 are respectively implanted into two sides of the inner wall of the pipe at the position where the steel grating 6 is to be installed on the hidden culvert sewage pipeline 3, the distance between the expansion bolts 7 on each side is matched with the thickness of the steel grating 6, and the steel grating 6 is vertically inserted between the expansion bolts 7 so as to be beneficial to taking down the steel grating for cleaning or replacing the damaged steel grating.

In this embodiment, specifically: the cut-off equipment is still provided with the cat ladder 8 and the inspection shaft 9 that supply to overhaul and well lid 10 at dark culvert wall and dark culvert top to make things convenient for professional to get into the dark culvert and carry out routine maintenance to cutting dirty device.

The working principle is as follows: when sewage entering pipeline flows to the drainage in the dark culvert in dry seasons, sewage is intercepted by the concrete water retaining weir 2 after passing through the steel grating 6 and is gathered to enter the intercepting branch pipe 1 and the intercepting main pipe 4, and garbage is intercepted by the steel grating 6, so that the sewage is prevented from directly discharging in the dark culvert 5. Initial stage rainwater is collected with sewage in the same way during the rainfall, and along with the rainfall increases, the current situation secretly contains sewage pipes 3 and rises to fill the degree, overflows after the water level surpasses concrete retaining weir 2 top and discharges and get into secretly containing 5, so then realized the collection of a small amount of sewage and the emission requirement of excessive rainwater.

The above description is only for the specific embodiment of the present invention, and the common general knowledge of the known specific structure and characteristics of the scheme is not described too much here. It should be noted that, for those skilled in the art, without departing from the structure of the present invention, several modifications and improvements can be made, which should also be regarded as the protection scope of the present invention, and these will not affect the effect of the implementation of the present invention and the practicability of the patent. The scope of the claims of the present application shall be determined by the contents of the claims, and the description of the embodiments and the like in the specification shall be used to explain the contents of the claims.

Claims (7)

1. A sewage discharge port cut-off device in a hidden culvert comprises a current hidden culvert sewage discharge pipeline (3), a cut-off main pipe (4) and a hidden culvert (5), and is characterized in that the cut-off device comprises cut-off branch pipes (1) and a concrete water retaining weir (2); the tube bottom of the intercepting branch tube (1) is horizontally connected and arranged at the bottom of the current dark culvert sewage discharge pipeline (3); the outlets of the intercepting branch pipes (1) are discharged into the intercepting main pipe (4) arranged at the bottom of the hidden culvert (5); the concrete water retaining weir (2) is closely attached to the inner wall of the current situation dark culvert sewage discharge pipeline (3) to fix the intercepting branch pipe (1); the concrete water retaining weir (2) is arranged to enclose the intercepting branch pipe (1); the concrete water retaining weir (2) is level with the top of the intercepting branch pipe (1), the outer part of the concrete water retaining weir is level with the current situation, the hidden culvert sewage pipeline (3) is level, and the inner part of the concrete water retaining weir is level with the pipe orifice of the intercepting branch pipe (1).

2. The sewage draining port intercepting device in the dark culvert according to claim 1, wherein the depth of the intercepting branch pipe (1) extending into the pipe orifice of the current dark culvert sewage draining pipeline (3) is set to be one time of the pipe outer diameter of the intercepting branch pipe (1), and the pipe outer diameter of the intercepting branch pipe (1) is set to be more than 100mm and not more than one half of the pipe inner diameter of the current dark culvert sewage draining pipeline (3).

3. The sewage draining port intercepting device in the dark culvert according to claim 1, wherein the concrete water retaining weir (2) is made of C20 concrete, and the intercepting branch pipe (1) is made of PVC-U pipe.

4. The intercepting device of the sewage discharge port in the dark culvert according to claim 1, wherein the intercepting device comprises a steel grating (6), the steel grating (6) is vertically and fixedly arranged in the water incoming direction of the pipe orifice of the intercepting branch pipe (1) to the current dark culvert sewage discharge pipeline (3) by 10-15 cm; the steel grating (6) is arc-shaped, the radius of the steel grating is the same as that of the current situation hidden culvert sewage discharge pipeline (3), the arc edge is tightly attached to the inner wall of the pipe, and the top of the steel grating (6) is level with the top of the concrete water retaining weir (2).

5. The intercepting device of the sewage draining port in the dark culvert according to claim 4, wherein the steel grating (6) is formed by welding two-stage threaded steel bar grids with the diameter of 5mm, the outer surface of each steel bar is provided with an anticorrosive layer, and the clear distance between adjacent steel bars is 2-3 cm.

6. The sewage draining port intercepting device in the dark culvert according to claim 4 or 5, wherein two expansion bolts (7) are respectively implanted into two sides of the inner wall of the pipe at the position where the steel grating (6) is to be installed in the current dark culvert sewage draining pipeline (3), the distance between the expansion bolts (7) on each side is matched with the thickness of the steel grating (6), and the steel grating (6) is vertically inserted between the expansion bolts (7).

7. The intercepting device of the sewage draining port in the hidden culvert according to claim 1, wherein the intercepting device is provided with a ladder (8) for maintenance on the wall of the hidden culvert (5), and an inspection shaft (9) and a well cover (10) are arranged on the top of the hidden culvert (5).

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