CN223688884U - A small forebay capable of flushing and removing sand - Google Patents

Abstract

This invention provides a small-scale water intake forebay capable of flushing and desilting, comprising a water intake section with a debris barrier at its front end, a rear end connected to the front end of a sand flushing section, and a rear end connected to the front end of the water intake section. The tops of the water intake section, sand flushing section, and water intake section are all at the same elevation, and the cross-section is a rectangular water channel with a uniformly smooth curved arrangement. This invention effectively solves the technical problems of siltation and turbulent flow velocity at natural water intakes in rural areas, thereby improving water quality.

Description

Small water diversion forehearth capable of flushing and discharging sand

Technical Field

The utility model relates to the technical field of agricultural hydraulic engineering, in particular to a small diversion forehearth capable of flushing and discharging sand.

Background

At present, rural diversion facilities are relatively behind in construction, most of the construction is simply to dig ditches from one side of a stream to guide the stream to a sedimentation tank, water is conveyed to the home through a pipeline, and the problems of sand flushing, stable water flow and the like are not considered in construction of a diversion port.

Mountain stream has high sediment content, often causes excessive sediment precipitation of the water channel, and wears the channel bottom and the sediment of the sedimentation tank seriously. Meanwhile, extreme weather is more and more, extreme storm, mountain torrent burst and the like often cause sediment blockage of a water diversion port, and the water diversion port needs to be cleaned manually at random, thereby wasting time and labor. The extremely drought water diversion requires that the water diversion port is high Cheng Jin and possibly low, but the water diversion port with low elevation introduces more sediment, and the water quantity of the water diversion port with low elevation is too large in heavy rain, so that partial water quantity needs to be drained at the water diversion port.

Moreover, the surrounding topography is greatly fluctuated near a plurality of mountain bodies at the water diversion port, and when water flow enters the water diversion port at a larger angle or at an irregular speed, vortex and turbulence phenomena are easily formed, so that facilities at the water diversion port are scoured.

Therefore, a small-sized water diversion forehearth capable of flushing and draining sand is needed to solve the problems.

Disclosure of Invention

The utility model aims to overcome the defects and provide a small diversion forehearth capable of flushing and discharging sand so as to solve the problems in the background technology.

The technical scheme includes that the small water diversion forehearth capable of flushing and discharging sand comprises a water taking section, wherein a trash rack is arranged at the front end of the water taking section, the rear end of the water taking section is connected with the front end of a sand discharging and flushing section, the rear end of the sand discharging and flushing section is connected with the front end of the water diversion section, the water taking section, the sand discharging and flushing section and the top of the water diversion section are all located at the same elevation, the cross section of the water taking section is a rectangular water passing channel, and the channels are uniformly distributed in a smooth curve shape.

Preferably, the side of the water taking section is provided with a first sidewalk and an overflow weir, and the top elevation of the overflow weir is lower than the side wall of the water channel.

Preferably, a semicircular inclined sand collecting groove is arranged in the middle of the sand flushing section, a second sidewalk is arranged right along the water flow direction, the sand collecting groove is inclined downwards until the sand settling box, and the bottom elevation of the sand settling box is consistent with the lower end of the waterfall.

Preferably, the water flowing channel between the sand collecting groove and the water flowing weir is inclined at a gradient of 10 degrees.

Preferably, the sand box is of a cube box-shaped structure, and the tail end of the sand box is provided with a flap valve capable of being automatically opened and closed.

Preferably, the sand collecting groove is of a semicircular inclined structure, and the gradient is 25 degrees.

Preferably, the front end of the water diversion section is provided with a water passing weir, the front end of the water diversion section is connected with a sand flushing section, a third sidewalk is arranged on the left bank along the water flow direction and at the top end of the water passing weir, and the third sidewalk is connected with a step.

Preferably, the third sidewalk is consistent with the widths of the first sidewalk and the second sidewalk.

Preferably, the height of the top of the water passing weir is 0.5m lower than the cross section of the water passing channel, and the width is not less than 1.0m.

The utility model has the following beneficial effects:

1. The utility model can prevent all large-scale floaters by arranging the sand flushing device at the rural natural water diversion port and arranging the trash rack at the water intake port beside the natural river channel, and drain excessive water when flood comes by the overflow weir arranged at the water intake section, thereby ensuring the sand removal efficiency of the sand flushing device;

2. According to the utility model, a large amount of sediment is collected in the sediment tank and the sediment collecting groove, and the sediment is flushed by utilizing the kinetic energy generated by the water under the height drop, so that the flushed sediment enters a natural river along with water flow, and no accumulation is generated;

3. the flap valve assembled by the sand sediment tank can be automatically opened and closed without manual treatment;

4. The water weir arranged at the water diversion section can improve the flow state of water flow to ensure that the water flow stably enters the water diversion port, and can also realize secondary sand removal by utilizing the self height of the water weir;

5. the utility model arranges the sidewalk in the water taking section, the sand discharging section and the water diversion section, is mainly used for the manager to pass through to observe the running condition of the sand discharging and flushing device, and can be processed in time.

Drawings

FIG. 1 is a schematic perspective view of the apparatus of the present utility model (right bank view);

FIG. 2 is a schematic view of the water intake section of the device of the present utility model in partial enlarged form (left bank view);

FIG. 3 is a schematic perspective view of an overflow weir;

FIG. 4 is a schematic perspective view of a sand collection trough;

FIG. 5 is a schematic perspective view of a weir;

In the figure, a water intake section 1, a trash rack 11, a sidewalk 12, an overflow weir 13, a sand discharge and flushing section 3, a sidewalk 31, a sand collecting groove 32, a sand settling tank 33, a flap valve 34, a water diversion section 5, a water weir 51, a sidewalk 52 and a step 53 are shown.

Detailed Description

The utility model is further illustrated by the following examples in conjunction with the accompanying drawings:

As shown in fig. 1 and 2, the utility model provides a small diversion forehearth capable of flushing and discharging sand, which comprises a water taking section 1, a sand discharging section 3 and a diversion section 5, wherein the water taking section 1, the sand discharging section 3 and the diversion section 5 are connected through a rectangular water passing channel with the cross section size of 1.0 mm, and are arranged in a smooth curve, the left sides of the water taking section 1 and the sand discharging section 3 are rock bodies, the right sides are flat lands, the left sides of the water passing channel are embedded into the rock bodies, and the left sides and the right sides of the diversion section 5 are flat lands.

As shown in fig. 1, 2 and 3, the front end of the water intake section 1 is provided with a trash rack 11 made of stainless steel arranged beside a natural river channel, water stopping treatment is carried out in gaps around the trash rack 11, an overflow weir 13 is arranged on the right bank of the water intake section 1 so as to facilitate the drainage of excessive water when flood comes, sand removal efficiency is ensured, the top height of the overflow weir 13 is lower than 0.2m of a water channel, the width along the water flow direction is 1.0m, the length perpendicular to the water flow direction is 0.6m, the trash rack 11 is connected to the water intake section 1, and the sand washing section 3 is arranged below.

As shown in fig. 1 and 4, a semicircular inclined sand collecting groove 32 is arranged in the middle of the sand discharging section 3, a sand depositing box 33 is connected behind the sand collecting groove 32, an automatic opening and closing flap valve 34 is assembled at the outlet of the sand depositing box 33, the radius of the sand collecting groove 32 is 0.2m, the slope rate is 25%, the height difference from bottom to top is 3.0m, the size of the sand depositing box 33 is long, wide, high=0.4m, 0.5m, 0.18m, and the size of the flap valve 34 is long, high=0.4m, 0.18m, and the thickness is 0.1m.

In the running process of the device, sediment in water is gathered through the sediment collection groove 32 and the sediment tank 33, when the weight of the gathered sand and water reaches 2.7kN (which is equivalent to the situation that the sediment tank 33 is fully filled with sand), the flap valve 34 is automatically opened, the sand is flushed down along with water flow and flows into the downstream of the natural river again, the automatic sediment discharge function is realized, the sediment accumulation condition is not caused, after the sediment is discharged, the flap valve 34 can be automatically closed by utilizing the self gravity (the hydrostatic pressure of 2.05kN of water with the dead weight of 2.2 kN), the manual operation is not needed at all during the sediment discharge period, the water intake section 1 is connected on the sediment discharge section 3, and the water diversion section 5 is connected.

As shown in fig. 1 and 5, the water passing weir 51 is arranged in front of the water diversion section 5, the top elevation is lower than the water passing channel by 0.5m, the width is 1.0m, the water flow state of the water diversion section can be stabilized, the secondary sand sedimentation can be realized by utilizing the self height advantage of the water passing weir 51, and the water passing channel between the sand collecting groove 32 and the water passing weir 51 has a gradient of 10%, so that the deposited sand can be collected to one place along the sand collecting groove 32, the artificial treatment is not needed, the water diversion section 5 is connected with the sand flushing section 3, and the rural water diversion port is connected.

The right bank of the water intake section 1 and the sand discharge section 3, the top of the water weir 51 and the left bank of the water diversion section 5 are provided with the sidewalk 12, 31 and 52 with the width of 0.5m, and the step 53 is arranged behind the sidewalk 52, so that a manager can walk conveniently, the working state of the sand discharge device is checked, meanwhile, the sand discharge device can reach the sand settling box 33 and the flap valve 34 along the sand collecting groove 32, and if the flap valve 34 is in a state, the problem can be solved in time.

The above embodiments are only preferred embodiments of the present utility model, and should not be construed as limiting the present utility model, and the scope of the present utility model should be defined by the claims, including the equivalents of the technical features in the claims. I.e., equivalent replacement modifications within the scope of this utility model are also within the scope of the utility model.

Claims (9)

1. The utility model provides a can wash small-size diversion forebay of arranging sand, includes water intaking section (1), its characterized in that, water intaking section (1) front end is equipped with trash rack (11), water intaking section (1) rear end links to each other with the front end of arranging sand flushing section (3), arrange sand flushing section (3) rear end and diversion section (5) front end and link to each other, water intaking section (1), arrange sand flushing section (3) and diversion section (5) top and all be in same elevation, the cross section is the rectangle and crosses water channel, and the channel adopts smooth curve to arrange uniformly.

2. The small water diversion forehearth capable of flushing and discharging sand according to claim 1, wherein a first sidewalk (12) and an overflow weir (13) are arranged on the side edge of the water taking section (1), and the top elevation of the overflow weir (13) is lower than the side wall of the water channel.

3. A small water diversion forehearth capable of flushing and discharging sand according to claim 1, characterized in that a semicircular inclined sand collecting groove (32) is arranged in the middle of the sand flushing section (3), a second sidewalk (31) is arranged right in the water flow direction, the sand collecting groove (32) is inclined downwards until reaching a sand settling box (33), and the bottom elevation of the sand settling box (33) is consistent with the lower end of a waterfall.

4. A small-sized water diversion forehearth capable of flushing and discharging sand according to claim 3, characterized in that the sand settling box (33) is of a cubic box-shaped structure, and a flap valve (34) capable of being opened and closed automatically is arranged at the tail end of the sand settling box (33).

5. A small-sized water diversion front pool capable of flushing and discharging sand according to claim 3, wherein the sand collecting groove (32) is of a semicircular inclined structure, and the gradient is 25 °.

6. A small water diversion forehearth capable of flushing and discharging sand according to claim 3, characterized in that the front end of the water diversion section (5) is provided with a water weir (51), the front end is connected with the sand flushing section (3), a third sidewalk (52) is arranged on the left side of the water flow direction and on the top end of the water weir (51), and the third sidewalk (52) is connected with a step (53) in a rear mode.

7. A small sand-flushable diversion forehearth according to claim 6, characterized in that the water channel between the sand collection trough (32) and the water weir (51) is inclined with a 10 ° slope.

8. A small water diversion front pool capable of flushing and discharging sand as set forth in claim 6, wherein the third sidewalk (52) is in width with the first sidewalk (12) and the second sidewalk (31).

9. The small-sized water diversion forehearth capable of flushing and discharging sand according to claim 6, wherein the height of the top of the water weir (51) is 0.5m lower than the cross section of the water channel, and the width is not less than 1.0m.