CN211499016U

CN211499016U - Box type water taking head

Info

Publication number: CN211499016U
Application number: CN201921810546.8U
Authority: CN
Inventors: 杨志峰; 王如华
Original assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Current assignee: Shanghai Municipal Engineering Design Insitute Group Co Ltd
Priority date: 2019-10-25
Filing date: 2019-10-25
Publication date: 2020-09-15
Anticipated expiration: 2029-10-25

Abstract

The utility model relates to a box water intaking head, box water intaking head are equipped with the swash plate including the water intaking box, and water intaking box middle part, swash plate upper portion are equipped with a plurality of water collecting branch pipes, and a plurality of water collecting branch pipes communicate through a closed intake pipe, and the water collecting branch pipe links to each other with establishing the inlet main at the water intaking box lateral part, and the lower part of swash plate is hollow structure, and hollow structure's bottom is equipped with the concrete slope, and hollow structure's side is equipped with the raw water grid of intaking. In the implementation, the inclined plate arranged in the box body is utilized to remove part of large-particle silt, so that the adverse effect possibly caused by the silt in the subsequent water treatment process is reduced, and the obtained raw water has good desanding effect.

Description

Box type water taking head

Technical Field

The utility model belongs to the technical field of the technique of water intaking device and specifically relates to a box water intaking head, especially relate to a box water intaking head that possesses silt particle preliminary sedimentation and get rid of the function automatically.

Background

For mountainous rivers, the water flow speed is increased in summer flood season, and the sand content in water is greatly increased. The subsequent water pipelines, water treatment facilities and the like are influenced to a great extent, and the following aspects are mainly shown:

(1) the silt is easy to precipitate, especially large-particle sand grains, and when the silt is conveyed in a pipeline, if the flow speed is reduced or the flow state is changed, the silt is easy to deposit at the low position of the pipeline, and the water conveying capacity of the pipeline is influenced.

(2) After a large amount of silt is conveyed to a water purification plant, the treatment difficulty of a flocculation tank, a sedimentation tank and a filter tank is increased, and the flocculation tank and the sedimentation tank often have no time to discharge the silt or the sludge discharge amount is greatly increased in a short period; the turbidity of the effluent of the sedimentation tank is abnormally increased; the backwashing frequency of the sand filter is increased; greatly improves the drug consumption and the like, and increases the production management difficulty.

(3) The raw water with high sand content (turbidity) leads to great increase of water abandon amount in the water purification process and corresponding reduction of water yield. Taking the tunnel in Sichuan as an example, the water disposal quantity of a water purification plant along the bank of a canal and a river reaches 30% in summer flood season, so that the water yield of the water purification plant is reduced in the flood season, and the water supply requirement of a city is difficult to meet.

(4) The increase of the sludge discharge amount of the sedimentation tank and the increase of the backwashing frequency of the filter tank lead to the increase of the load of a sludge treatment system in a water plant, and in extreme cases, the production sludge and the wastewater are directly discharged to peripheral water bodies and sewers due to untimely treatment, thereby causing great influence on the peripheral environment.

For such raw water, in the past design, measures such as increasing the alum addition amount, increasing the running time of a sludge discharge truss vehicle of a sedimentation tank, increasing the back washing frequency of a filter tank, improving the sludge treatment capacity of a sludge treatment system and the like are usually adopted for dealing with the following water purification treatment process, and in some water plants adopting raw water with high sand content, a pre-sedimentation tank is sometimes arranged in front of the sedimentation tank to reduce the sand load of the next sedimentation tank so as to ensure the effluent quality of the sedimentation tank. However, when the water intake head is designed, a conventional horn mouth type or box type water intake head is often adopted, and sand avoiding and removing measures are less considered to be adopted on the water intake head, so that the difficulty and the cost are increased on the subsequent water purification treatment.

Disclosure of Invention

An object of the utility model is to provide a box water intaking head of modified through the water intaking head that is provided with branch pipe and swash plate catchments, can make the silt granule deposit, has reduced the cost and the degree of difficulty that follow-up water purification technology was handled.

In order to realize the purpose, the technical scheme of the utility model is that: a box water intaking head which characterized in that: the box water intaking head comprises a water intaking box body, an inclined plate is arranged in the middle of the water intaking box body, a plurality of water collecting branch pipes are arranged on the upper portion of the inclined plate, two ends of each water collecting branch pipe are communicated through a closed water intaking pipe respectively, the water collecting branch pipes are connected with a water inlet header pipe arranged on the side portion of the water intaking box body, the lower portion of the inclined plate is of a hollow structure, a concrete slope is arranged at the bottom of the hollow structure, and a raw water inlet grid is arranged on the side of the hollow structure.

Preferably, the top of the water taking tank body is provided with a steel concrete cover plate, the concrete slope is in a shape with a high center and two low sides, and the included angle between the inclined plane and the horizontal plane is 10-35 degrees.

Furthermore, the inclined plate is made of stainless steel, stainless steel grids are arranged on the inclined plate, the distance between every two adjacent stainless steel grids is larger than or equal to the distance between every two adjacent raw water inlet grids, the included angle between the inclined plate and the horizontal plane is 50-65 degrees, and stainless steel I-shaped steel is arranged at the lower portion of the inclined plate and used for supporting the inclined plate.

Furthermore, the water collecting branch pipe is provided with an opening, and the distance between the opening and the inclined plate is 0.8-1.2 m.

Compared with the prior art, the technical scheme of the utility model except whole technical scheme's improvement, still include the improvement in the aspect of many details, particularly, have following beneficial effect:

1. the improved scheme of the utility model is provided with a water taking box body, the middle part of the water taking box body is provided with an inclined plate, the upper part of the inclined plate is provided with a plurality of water collecting branch pipes, raw water enters the box body from the lower part of the inclined plate, the raw water with high sand content upwards passes through the inclined plate at a smaller flow speed, under the sedimentation effect of the inclined plate, larger granular silt is precipitated on the surface of the inclined plate and slides to the lower part of the box body along the inclined plate, and the desanding effect is good;

2. in the technical scheme of the utility model, the lower part of the sloping plate is of a hollow structure, the bottom of the hollow structure is provided with a concrete slope, the side of the hollow structure is provided with a raw water inlet grid, and the concrete slope at the bottom is used for dredging larger granular silt blocked from the sloping plate so as to enter a riverbed around the water taking head part and facilitate drainage along water flow to downstream;

3. in the scheme of the utility model, the water collecting branch pipe is provided with an opening, the distance between the opening and the sloping plate is 0.8-1.2m, so that the filtered raw water can be further collected conveniently, and the effectiveness of water taking is ensured;

4. the utility model discloses structural configuration is reasonable, simple structure, and the cost is lower, does benefit to popularization and utilization.

Drawings

Fig. 1 is a schematic structural diagram of the present invention.

Fig. 2 is another schematic structural diagram of the present invention.

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

Fig. 4 is a sectional view taken along line B-B in fig. 1.

Reference numerals:

the water taking device comprises a water taking box body 1, a raw water inlet grid 2, an inclined plate 3, a water collecting branch pipe 4, a water inlet main pipe 5, a steel concrete cover plate 6, a concrete slope 7, stainless steel I-shaped steel 8 and a water taking pipe 9.

Detailed Description

The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

The utility model provides a box water intaking head, specifically refer to FIG. 1, its difference with prior art lies in: the box water intaking head comprises a water intaking box body 1, an inclined plate 3 is arranged in the middle of the water intaking box body, a plurality of water collecting branch pipes 4 are arranged on the upper portion of the inclined plate, two ends of each water collecting branch pipe are communicated through a closed water intaking pipe 9 respectively, the water collecting branch pipes are connected with a water inlet header pipe 5 arranged on the side portion of the water intaking box body, the lower portion of the inclined plate is of a hollow structure, a concrete slope 7 is arranged at the bottom of the hollow structure, and a raw water inlet grid 2 is arranged on the side of the hollow structure.

Particularly, the device is used for water taking in mountain rivers with extremely high turbidity in flood season, and partial large-particle silt is removed by utilizing the inclined plates arranged in the box body, so that the adverse effect possibly caused by the sludge in the subsequent water treatment process is reduced. The utility model discloses set up the swash plate in the box, let high sand content raw water upwards pass through the swash plate with less velocity of flow, under the precipitation of swash plate, the silt particle of great granule deposits on the swash plate surface, on the cushion cap on slope is taken to lower part along swash plate landing, then on landing to the peripheral riverbed of water intaking head, excretes along with water flow direction low reaches. After the water taking head is adopted, theoretically, the upward flow velocity can be changed by changing the distance between the inclined plates, so that the inclined plates have a better sand removing effect. For the silt settled on the riverbed, the silt is flushed to the downstream along with the water flow by changing the section shape of the box body supporting column.

In one embodiment, the top of the water taking tank body is provided with a steel concrete cover plate 6, the concrete slope is in a shape with a high center and two low sides, and the included angle between the inclined plane and the horizontal plane is 10-35 degrees, preferably 15-20 degrees. The shape of the water taking head adopts a rhombus or an arc.

The length of the inclined plate is 1000mm, the inclined plate 3 is made of stainless steel, stainless steel grids are arranged on the inclined plate, the distance between every two adjacent stainless steel grids is larger than or equal to the distance between every two adjacent raw water inlet grids, the net distance between every two adjacent stainless steel grids and the plate vertical direction on the inclined plate is not smaller than 100mm, the inclined plate and the horizontal direction form an included angle of 60 degrees, the thickness of the inclined plate is 5mm, and the inclined plate is arranged on transverse I-steel. The upper part of the inclined plate is provided with a plurality of groups of water collecting pipes with smaller calibers, and the settled water enters a water diversion main pipe with a larger calibre through the water collecting pipes. The water collecting branch pipe is provided with an opening, and the distance between the opening and the inclined plate is 0.8-1.2 m.

The silt particles settled by the inclined plate slide down to the bottom of the caisson. The bottom of the caisson is provided with a plain concrete filling slope which inclines from the center to two sides and inclines to the edge of the caisson body at a certain angle. The silt slides to the outside of the box body along the slope and is washed to the downstream along with the water flow.

The water inlet grids are arranged around the box body at the lower part of the inclined plate area and designed according to a conventional water taking head, the grid distance is generally 80-100 mm, and the water inlet flow speed is 0.2-0.6 m/s. The distance between the lower edges of the water inlet grids and the bottom of the river bed with stable treatment is not less than 0.5 m.

In order to facilitate the installation of the inclined plate, the upper part of the water taking box body is provided with an equipment hole which is covered by a steel concrete cover plate and has an anchoring measure for preventing water flow from scouring. The platform at the upper part of the water taking tank can be arranged reasonably according to the requirements of comprehensive shipping, landscape and the like.

In another embodiment, 10-30 branch water catchments are arranged on the upper part of the sloping plate in parallel, the water intake pipe 9 is formed by connecting a straight line part water intake pipe and a circular arc part water intake pipe in sequence, the two side ends of the middle branch water catchment are connected through a straight line part water intake pipe respectively, and the two ends of the two branch water catchments at the two ends are connected through a circular arc part water pipe respectively. Inclined plates are arranged in the box body, the length of each inclined plate is 1.0m, the thickness of each inclined plate is 3-5 mm, the inclination angle (included angle with the horizontal direction) is 60 degrees, the distance between the inclined plates is not smaller than the distance between the grids at the lower part, and the distance between the inclined plates is generally 1.5-2 times that between the grids at the lower part. The water inlet direction is the lower part of the caisson, water inlet grids are arranged around the lower part of the caisson, the spacing between the grids is 9cm, the thickness of the grids is 10mm, and the water inlet flow speed is 0.3-0.6 m/s. The distance from the lower edge of the grid (the upper surface of the caisson foundation) to the bottom of the stable river bed is not less than 50 cm.

The lower part of the caisson is provided with a slope with the gradient not less than 10 degrees, so that settled silt can slide out of the caisson conveniently. The inclined plate is provided with a water collecting pipe, the caliber of the water collecting pipe is determined according to requirements, and the upper part of the water collecting pipe is opened. The distance between the opening position and the inclined plate is selected according to the requirement, and is generally 1.0 m. The inclined plate is provided with a water collecting branch pipe, the caliber of the water collecting branch pipe is determined according to requirements, and the upper part of the water collecting branch pipe is opened for water inlet. This novel water intaking head principle science can utilize the swash plate to get rid of the silt particle of great particle diameter to make the automatic landing of silt particle of getting rid of outside the caisson, utilize the scouring action of river course rivers to carry to low reaches. The utility model discloses an effect of use is direct, obvious, can reduce the mud harm in the follow-up water treatment process to a great extent.

The foregoing is a more detailed description of the invention, taken in conjunction with the accompanying preferred embodiments, and it is not intended that the invention be limited to the specific embodiments described above. To the utility model belongs to the technical field of ordinary technical personnel, do not deviate from the utility model discloses under the prerequisite of design, can also make a plurality of simple deductions or replacement, all should regard as belonging to the utility model discloses a protection scope.

Claims

1. A box water intaking head which characterized in that: the box-type water taking head comprises a water taking box body, an inclined plate is arranged in the middle of the water taking box body, a plurality of water collecting branch pipes are arranged on the upper portion of the inclined plate and communicated through a closed water taking pipe, the water collecting branch pipes are connected with a water inlet main pipe arranged on the side portion of the water taking box body, the lower portion of the inclined plate is of a hollow structure, a concrete slope is arranged at the bottom of the hollow structure, and a raw water inlet grid is arranged on the side of the hollow structure.

2. A box-type water intake head according to claim 1, wherein: the top of the water taking box body is provided with a steel concrete cover plate, the concrete slope is in a shape with a high center and two low sides, and the included angle between the inclined plane and the horizontal plane is 10-35 degrees.

3. A box-type water intake head according to claim 1, wherein: the inclined plate is made of stainless steel, stainless steel grids are arranged on the inclined plate, the distance between every two adjacent stainless steel grids is larger than or equal to the distance between every two adjacent raw water inlet grids, the included angle between the inclined plate and the horizontal plane is 50-65 degrees, and stainless steel I-shaped steel is arranged at the lower portion of the inclined plate and used for supporting the inclined plate.

4. A box-type water intake head according to claim 1, wherein: the water collecting branch pipe is provided with an opening, and the distance between the opening and the inclined plate is 0.8-1.2 m.

5. A box-type water intake head according to claim 1, wherein: 10-30 branch catchments are set up in parallel on the swash plate upper portion, and the intake pipe is formed by straight line portion intake pipe and arc portion intake pipe connecting gradually, and the both sides end of the branch catchments that establish in the middle is linked to each other through a straight line portion intake pipe respectively, and the both ends of two branch catchments that establish at both ends are connected through an arc portion water pipe respectively.

6. A box-type water intake head according to claim 1, wherein: the shape of the water taking box body is rhombic or fish-shaped.