CN213389960U - Small-pipe-diameter water diversion inverted siphon silt prevention and flushing system for wetland - Google Patents

Abstract

The utility model discloses a wetland small-diameter water diversion inverted siphon silt prevention and flushing system, which comprises an upstream river channel and a downstream river channel, wherein a mud trap is arranged between the upstream river channel and the downstream river channel, and one side of the mud trap is connected with a valve well through a connecting pipe; one side of the valve well is connected with an inverted siphon pipe, and the other end of the inverted siphon pipe is connected with the wetland pool; a trash rack and an access door groove are arranged in the mud pit, a ball float valve is arranged in the valve well, and the flow entering the inverted siphon is automatically adjusted through the upstream river channel water level; the end of the inverted siphon pipe connected with the wetland tank is provided with a flushing valve, and the inverted siphon pipe is flushed by the rapid water flow generated by the water head difference. The system solves the problems that the pipe diameter of the diversion pipe of the existing wetland diversion engineering is small, siltation is easy to generate in the pipe when the diversion pipe is arranged across a river channel, and the pipe is not easy to wash, so that the stability of the wetland water inflow and the water quality safety are affected.

Description

Small-pipe-diameter water diversion inverted siphon silt prevention and flushing system for wetland

Technical Field

The utility model belongs to the technical field of ecological hydraulic engineering, concretely relates to small pipe diameter diversion inverted siphon of wetland prevents silt and rinse-system.

Background

In the river and lake water environment treatment engineering, a bypass artificial wetland is usually adopted for water quality treatment and is used for purifying substandard base flow in dry seasons of an upstream branch river; after the base flow is treated by the ecological wetland, the base flow is discharged into the downstream of the dry river to be used as ecological water supplement. In the wetland diversion project, the situation that diversion pipes need to be arranged across a river channel is often met, and an inverted siphon type is adopted to reduce the water blocking influence of the pipeline across the river channel under the condition of meeting the overflowing capacity; the diameter of the inverted siphon is generally DN300 mm. The small-pipe-diameter water-diversion inverted siphon pipe has the problems of easy sedimentation, difficult flushing and the like, and the normal operation of the wetland requires the water inlet amount and the stability of the water quality, so that the wetland small-pipe-diameter water-diversion inverted siphon pipe silt-prevention and flushing system is provided for solving the problems.

Disclosure of Invention

The utility model aims to solve the technical problem that a small pipe diameter diversion inverted siphon of wetland prevents silt and rinse-system is provided, this system has solved current wetland diversion engineering leading water pipe diameter less, intraductal easy production siltation when striding the river course and arranging, is difficult for washing to influence the stability of wetland inflow and the problem of quality of water safety, have and can effectively reduce the interior silt filth admission capacity of leading water pipe, can prevent flood from flowing backward the wetland, can regularly to the characteristics of carrying out the desilting in the leading water pipe.

In order to realize the above design, the utility model adopts the following technical scheme: a small-caliber water-diversion inverted siphon silt-prevention and flushing system for a wetland comprises an upstream river channel and a downstream river channel, wherein a mud-depositing well is arranged between the upstream river channel and the downstream river channel, and one side of the mud-depositing well is connected with a valve well through a connecting pipe; one side of the valve well is connected with an inverted siphon, and the other end of the inverted siphon is connected with the wetland tank.

Preferably, a water inlet is formed in one side, close to the upstream river, of the mud trap and is communicated with the upstream river; the water inlet is connected with a trash rack.

Furthermore, the trash rack is of a stainless steel fine grid structure.

Preferably, the inner wall of the mud trap on one side of the trash rack is connected with an access door groove.

Preferably, a water outlet is arranged on one side of the valve well and is connected with the inverted siphon; a ball float valve is arranged in the valve well to regulate the water flow entering the inverted siphon from the water outlet.

Preferably, the inverted siphon is located below the bed of the downstream waterway, passing through the downstream waterway and the bank slope of the waterway.

Furthermore, two ends of the inverted siphon pipe are bent upwards, and the middle section is a straight pipe.

Preferably, one end of the inverted siphon pipe close to the wetland pool is connected with a flushing valve.

Further, the flush valve is an eccentric half ball valve.

The utility model provides a wetland small-diameter diversion inverted siphon silt prevention and flushing system, which is characterized in that a mud pit is arranged at the front end to intercept and settle river inflow garbage, silt and the like and buffer river inflow, the mud pit is excavated below the upstream river ground, and after water is blocked by an access door slot, the mud pit is regularly cleaned by ground entering, so that the silt prevention effect is achieved, and the amount of silt and sewage entering the inverted siphon is greatly reduced; the valve well controls the inflow amount of the wetland through the ball float valve, when the upstream river channel floods, the ball float valve limits or blocks the flow, so that the flood can be reduced to flow into the wetland through the inverted siphon, and the problem that the water flow with more dirt enters the wetland pool to influence the quality of the wetland during the flood is avoided; through the flush valve that control inverted siphon export set up, utilize the flood peak difference to form quick rivers, make rivers realize the automatic flushing inverted siphon, realize the mediation and the desilting to inverted siphon, avoid blockking up. The system solves the problems that the inverted siphon is easy to deposit and not easy to wash and the like, and ensures the stability of the inlet water quantity and the water quality of the inverted siphon for small-diameter water diversion of the wetland.

Drawings

Fig. 1 is a schematic diagram of the system structure of the present invention.

The reference numbers in the figures are: the system comprises an upstream river channel 1, a trash rack 2, an access door groove 3, a mud sinking well 4, a connecting pipe 5, a ball float valve 6, a valve well 7, an inverted siphon 8, a downstream river channel 9, a river channel bank slope 10, a flushing valve 11 and a wetland pool 12.

Detailed Description

As shown in fig. 1, the wetland small-pipe-diameter water-diversion inverted siphon silt-prevention and flushing system comprises an upstream river channel 1 and a downstream river channel 9, wherein a mud-settling well 4 is arranged between the upstream river channel 1 and the downstream river channel 9, and one side of the mud-settling well 4 is connected with a valve well 7 through a connecting pipe 5; one side of the valve well 7 is connected with an inverted siphon 8, and the other end of the inverted siphon 8 is connected with a wetland pool 12.

Preferably, a water inlet is formed in one side, close to the upstream river channel 1, of the mud trap 4 and is communicated with the upstream river channel 1; the water inlet is connected with a trash rack 2.

Further, the trash rack 2 is a stainless steel fine grid structure.

Preferably, the inner wall of the mud trap 4 at one side of the trash rack 2 is connected with an access door groove 3.

Preferably, one side of the valve well 7 is provided with a water outlet which is connected with the inverted siphon 8; a ball float valve 6 is arranged in the valve well 7 to adjust the water flow entering the inverted siphon 8 from the water outlet.

Preferably, the inverted siphon 8 is located below the bed of the downstream waterway 9, across the downstream waterway 9 and the river bank slope 10.

Furthermore, two ends of the inverted siphon 8 are bent upwards, and the middle section is a straight pipe.

Preferably, a flush valve 11 is connected to the inverted siphon pipe 8 near one end of the wetland tank 12.

Further, the flush valve 11 is an eccentric half ball valve.

The utility model provides a pair of wetland small-diameter diversion inverted siphon prevents silt and rinse-system's theory of operation as follows: after water flow of an upstream river channel 1 passes through a trash rack 2, most of garbage is intercepted, part of suspended matters and silt enter a mud sinking well 4 for sedimentation, an access door groove 3 is reserved at the inlet of the mud sinking well 4, the access door groove is required to be maintained, and when the sediment is regularly cleaned, the gate groove is utilized and a gate is used for sealing and blocking water; the water flow after sedimentation and filtration enters a valve well 7 from a mud well 4 through a connecting pipe 5, a ball float valve 6 is arranged in the valve well 7, and the ball float valve 6 regulates the flow entering a reverse siphon 8 according to the water level; when the upstream riverway 1 floods, the water surface rises, floats and rises to drive the connecting rod to rise, the connecting rod is connected with the valve at the other end, and when the connecting rod rises to a certain position, the connecting rod supports the rubber piston pad to seal a water source, so that the flow limiting effect is achieved, and the flow of the flood with poor water quality flowing into the wetland through the inverted siphon 8 is reduced; the outlet of the inverted siphon pipe 8 is provided with a flushing valve 11, when the inverted siphon pipe 8 needs to be flushed, the flushing valve is closed firstly when the inverted siphon pipe 8 needs to be flushed in normal operation, the wetland emptying pipe is utilized to reduce the water level of the wetland, the water level of the inlet and the outlet of the inverted siphon pipe 8 forms a large water head difference, then the downstream flushing valve 11 is opened quickly, and silt in the inverted siphon pipe 8 is flushed out by utilizing the quick water flow formed by the water head difference.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims (6)

1. The utility model provides a little pipe diameter diversion of wetland falls siphon and prevents silt and rinse-system, includes upper reaches river course (1) and low reaches river course (9), its characterized in that: a mud trap (4) is arranged between the upstream river channel (1) and the downstream river channel, and one side of the mud trap (4) is connected with a valve well (7) through a connecting pipe (5); one side of the valve well (7) is connected with an inverted siphon (8), and the other end of the inverted siphon (8) is connected with the wetland pool (12).

2. The wetland small-pipe-diameter water-diversion inverted siphon anti-silting and flushing system as claimed in claim 1, wherein: a water inlet is formed in one side, close to the upstream river channel (1), of the mud pit (4), and is communicated with the upstream river channel (1); the water inlet is connected with a trash rack (2).

3. The wetland small-pipe-diameter water-diversion inverted siphon anti-silting and flushing system as claimed in claim 2, wherein: the inner wall of the mud settling well (4) on one side of the trash rack (2) is connected with an access door groove (3).

4. The wetland small-pipe-diameter water-diversion inverted siphon anti-silting and flushing system as claimed in claim 1, wherein: a water outlet is formed in one side of the valve well (7) and is connected with an inverted siphon (8); a ball float valve (6) is arranged in the valve well (7) to adjust the water flow entering the inverted siphon (8) from the water outlet.

5. The wetland small-pipe-diameter water-diversion inverted siphon anti-silting and flushing system as claimed in claim 1, wherein: the inverted siphon (8) is positioned below the riverbed of the downstream riverway (9) and penetrates through the downstream riverway (9) and the riverway bank slope (10).

6. The wetland small-pipe-diameter water-diversion inverted siphon anti-silting and flushing system as claimed in claim 1, wherein: one end of the inverted siphon (8) close to the wetland pool (12) is connected with a flushing valve (11).

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