CN211285703U

CN211285703U - Percolation water collection pump well with backwashing function

Info

Publication number: CN211285703U
Application number: CN201922096256.8U
Authority: CN
Inventors: 李传松; 李绍平; 曾庆华; 张皓; 王庆生; 李宗明; 邬杰; 吉阳; 陈涛
Original assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Current assignee: China Railway Eryuan Engineering Group Co Ltd CREEC
Priority date: 2019-11-28
Filing date: 2019-11-28
Publication date: 2020-08-18
Anticipated expiration: 2029-11-28

Abstract

The utility model provides a filtration water-collecting pump well with back flush function to reinforcing earth's surface river water intaking reliability improves water intaking quality of water, relates to water intaking engineering technical field. The utility model provides a filtration water-collecting pump well with backwash function, includes well body, well lid and sets up the backwash structure in the well body, the well body is buried underground in the riverbed, the well body includes the reversed filter layer, the section of permeating water and connects the water-collecting section of the section lower extreme of permeating water, the reversed filter layer encloses and establishes in the section periphery of permeating water. The pump well can be suitable for river water taking of industrial and agricultural water or construction water.

Description

Percolation water collection pump well with backwashing function

Technical Field

The utility model relates to a water intaking engineering technical field specifically is a filtration water-collecting pump well with back flush function.

Background

Along with the development and the demand of infrastructure construction in mountain areas and the rapid development of industrial and agricultural water, the requirement on the reliability of water taking of surface water in mountain areas is higher and higher. The mountainous rivers mostly use the high mountain water as a main water supply source, the water depth is shallow, the mud flat is more, the water quantity is greatly influenced by seasons, the river is often polluted by rainfall in the river course in rainy seasons, and the water quality is deteriorated, water intake structures are silted up, and the water intake device cannot take water; in dry seasons, the water quantity of the river channel is reduced, the water level is reduced, and the water taking head arranged on the ground surface is difficult to take enough surface water. In addition, the foundation under the river bed of the mountain river is mostly silt with pebbles, gravels and the like, the filtering and purifying capacity of the foundation is weaker than that of the shallow groundwater region in the flat region, and sufficient water meeting the water quality requirement cannot be effectively obtained by using a large-mouth well or a simple water collecting tank and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses the technical problem that will solve is: provides a percolation water collecting pump well with a back flushing function so as to enhance the reliability of water taking from surface rivers and improve the water quality of water taking.

The utility model provides a technical scheme that its technical problem adopted is: a percolation water collection pump well with a backwashing function comprises a well body, a well cover and a backwashing structure arranged in the well body, wherein the well body is buried in a river bed, the well body comprises a reverse filtering layer, a water permeable section and a water collection section connected to the lower end of the water permeable section, and the reverse filtering layer is arranged around the periphery of the water permeable section;

the back flush structure includes immersible pump, backwash pipe and drain pipe, the immersible pump sets up in the water collection section in order to extract the catchment in the water collection section, the backwash pipe is followed the synthetic annular of catchment section inner wall enclosure, the backwash pipe with the immersible pump meets, be provided with a plurality of shower nozzles that arrange and the downward injection along backwash pipe extending direction on the backwash pipe, the drain pipe with the immersible pump meets.

Furthermore, gate valves are arranged on the back-flushing pipe and the drain pipe, and the back-flushing pipe and the drain pipe are connected with the submersible pump through a four-way joint.

And the manhole cover sealing cover is arranged on the shaft and is hinged with the shaft.

Furthermore, the inverted filter layer comprises a first filler layer, a second filler layer and a third filler layer which are arranged from outside to inside in sequence and the filler particles of which are increased in sequence.

Further, a sponge layer is arranged between the third packing layer and the water permeable section.

Further, the first packing layer is a coarse sand or quartz sand packing layer, the second packing layer is a broken stone packing layer, and the third packing layer is a broken stone or pebble packing layer.

Further, the submersible pump is arranged in the annular center surrounded by the backwashing pipe.

The utility model has the advantages that: the infiltration water-collecting pump well of the utility model can filter the groundwater in the infiltration shallow layer area under the riverbed through the inverted filter layer and then flow into the pump well, the inverted filter layer can purify most of the silt in the river water, when the sediment which is not filtered out is deposited more in the pump well, the water storage capacity in the pump well can be used for circularly flushing, and after the flushing water flows through the nozzle of the flushing pipe to flush the sediment at the bottom, then the silt is discharged through the drain pipe, the submersible pump is prevented from sucking the silt when the submersible pump is used for water taking, the pump well is used for water taking, the sand content in water is less, the water taking quality is high, and simultaneously, because the well body of the pump well is buried in the riverbed, the water intake of the pump well is not influenced by the erosion and deposition change of rivers, the fluctuation of river water and the seasons which are not abundant or dry, the water intake of the pump well is reliable and high, therefore, the pump well can be suitable for river water taking of industrial and agricultural water or construction water, and is simple in structure and convenient to manage.

Drawings

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

FIG. 2 is a schematic view of a backwash structure of the present invention;

well lid 2, inverted filter layer 3, sponge layer 5, elbow 6 ventilates, riverbed 7, pit shaft 11, the section of permeating water 12, the section of catchmenting 13, first packing layer 31, second packing layer 32, third packing layer 33, immersible pump 41, backwash pipe 42, drain pipe 43, shower nozzle 44, gate valve 45, cross 46, delivery pipe 47, the hole of permeating water 121.

Detailed Description

The present invention will be further explained with reference to the drawings and examples.

As shown in fig. 1 and 2, the percolation water collection pump well with backwashing function of the present invention comprises a well body, a well lid 2 and a backwashing structure arranged in the well body, wherein the well body is buried in a river bed 7, the well body comprises a reverse filtering layer 3, a water permeable section 12 and a water collecting section 13 connected to the lower end of the water permeable section 12, the water permeable section 12 is provided with water permeable holes 121, and the reverse filtering layer 3 is surrounded on the periphery of the water permeable section 12; the back flush structure comprises a submersible pump 41, a back flush pipe 42 and a drain pipe 43, wherein the submersible pump 41 is installed in the water collection section 13 to collect water in the water collection section 13, the back flush pipe 42 is enclosed along the inner wall of the water collection section 13 to form a ring shape, the back flush pipe 42 is connected with the submersible pump 41, a plurality of spray heads 44 which are arranged along the extending direction of the back flush pipe 42 and spray downwards are arranged on the back flush pipe 42, and the drain pipe 43 is connected with the submersible pump 41.

The inverted filter layer 3 can be arranged around the periphery of the water permeable section 12 till the landfill. In order to reduce and block the migration and penetration of the silt in the river water, a steel wire mesh or non-woven fabric can be arranged on the periphery of the inverted filter layer 3. Well lid 2 can be buried underground in the riverbed, directly covers to establish on well body section 12 that permeates water promptly, and in figure 1, the pump well still includes that one end meets with section 12 upper end that permeates water, and one end extends to the pit shaft 11 outside riverbed 7, and pit shaft 11 extends to outside riverbed 7, and well lid 2 covers and establishes on pit shaft 11, and the switching of well lid 2 is convenient like this, is convenient for overhaul the equipment pipeline in the pump well. In order to prevent external water from directly entering the pump well without filtering, the sealing cover of the well lid 2 is arranged on the shaft 11 and is hinged with the shaft 11. The sealing cover of the well lid 2 can be arranged on the shaft 11 in a mode of arranging a sealing ring between the sealing cover and the shaft. It can be understood that after the sealing cover of the well lid 2 is arranged on the shaft 11, the pump well needs to be provided with a ventilation elbow 6 in order to facilitate the communication of the inside and outside gas.

The utility model provides a pump well buries the shaft of a well underground in riverbed 7, and the groundwater that is located the riverbed and oozes the shallow layer region under filters the back through well body reverse filter layer 3 and flows into the pump well again, and the gathering is in catchment section 13 at last, and the reverse filter layer can purify most silt in the river. When sediment that does not filter is deposited when more in the pump well, usable pump well memory water storage capacity circulates again and washes, and the washing water flows through back flush pipe and goes up the shower nozzle and play the back with bottom sediment, and the rethread drain pipe is discharged silt, can prevent like this to give other people from pump well water intaking and inhale silt when using, consequently adopts the utility model discloses a behind the pump well, the aquatic contains sand less, and water intaking quality of water is high. The back washing pipes are enclosed into a ring along the inner wall of the water collecting section 13, and the spray heads 44 are arranged along the extending direction of the back washing pipes 42, namely the spray heads 44 are distributed along the inner wall of the water collecting section 13 in a ring shape, so that silt at the bottom of the pump well can be thoroughly washed and flows to the center of the pump well. To facilitate the drainage of the submersible pump 41, the submersible pump 41 is preferably arranged in the center of the annulus enclosed by the backwash pipe 42. Because the well body of the pump well is buried in the riverbed, the water intake of the pump well is not influenced by the erosion and deposition change of rivers, the fluctuation of river water and the seasons which are not abundant or dry, and the water intake reliability of the pump well is high.

As shown in fig. 2, the back-flushing pipe 42 and the water discharge pipe 43 of the present invention are both provided with a gate valve 45, the back-flushing pipe 42 and the water discharge pipe 43 are connected to the submersible pump 41 through a four-way 46, and an extra interface of the four-way 46 can be used for supplying water to a user, i.e., connected to a water supply pipe 47. After the arrangement in the mode, the functions of flushing, sand discharging or water supply for users can be completed by using one submersible pump 41 by controlling the gate valves on the pipelines, and the arrangement number of the submersible pumps can be reduced.

Specifically, the inverted filter layer comprises a first filler layer 31, a second filler layer 32 and a third filler layer 33 which are arranged from outside to inside in sequence and the filler particles of which are increased in sequence. The anti-filter bed is that the three-layer filter effect is good, and the filler granule of first packing layer 31, second packing layer 32 and third packing layer 33 increases in proper order, and the suspended solid is difficult to pass first packing layer 31, and the suspended solid mainly deposits outside first packing layer 31 promptly, receives the suspended solid of river rivers effect deposit constantly with the sand bed exchange of riverbed, and the infiltration device is difficult to block up. Wherein, when the granularity difference between two adjacent packing layers is great, in order to prevent the adjacent packing layers from generating a mixed layer, a separation plate with a water permeable function can be arranged between the packing layers.

In order to prevent the filler of the third packing layer from entering the pump well, a sponge layer 5 is arranged between the third packing layer 33 and the water permeable section 12.

Specifically, the first packing layer 31 is a coarse sand or quartz sand packing layer, the second packing layer 32 is a crushed stone packing layer, and the third packing layer 33 is a crushed stone or pebble packing layer. Of course, artificially manufactured filter materials can also be used, but this is costly. In order to ensure the filtering effect, it is preferable that the particle size of the first filler layer 31 is 2-4mm, the particle size of the second filler layer 32 is 5-10mm, the particle size of the third filler layer 33 is 10-30mm, and the thickness of each filler layer 33 is 200-300 mm.

Claims

1. The utility model provides a filtration catchment pump well with back flush function which characterized in that: the underground water-retaining well comprises a well body, a well cover (2) and a backwashing structure arranged in the well body, wherein the well body is buried in a riverbed, the well body comprises a backwashing layer (3), a water permeable section (12) and a water collecting section (13) connected to the lower end of the water permeable section (12), and the backwashing layer (3) is arranged around the periphery of the water permeable section (12);

the back flush structure includes immersible pump (41), backwash pipe (42) and drain pipe (43), immersible pump (41) set up catchment in section (13) in order to extract catchment section (13), backwash pipe (42) are followed catchment section (13) inner wall encloses synthetic annular, backwash pipe (42) with immersible pump (41) meet, be provided with a plurality of shower nozzles (44) that arrange and the downspray along backwash pipe (42) extending direction on backwash pipe (42), drain pipe (43) with immersible pump (41) meet.

2. A percolation catchment pump well with backwash function as in claim 1 wherein: the backwash pipe (42) and the drain pipe (43) are both provided with gate valves (45), and the backwash pipe (42) and the drain pipe (43) are connected with the submersible pump (41) through a four-way joint (46).

3. A percolation catchment pump well with backwash function as in claim 1 wherein: still include one end and meet with ventilative section (12) upper end, pit shaft (11) outside one end extends to the riverbed, well lid (2) sealed lid is established on pit shaft (11), and with pit shaft (11) are articulated to be connected.

4. A percolation sump pump well with backwash function as defined in claim 1, 2 or 3 wherein: the inverted filter layer comprises a first filler layer (31), a second filler layer (32) and a third filler layer (33) which are arranged from outside to inside in sequence and the filler particles of which are increased in sequence.

5. A percolation catchment pump well with backwash function as in claim 4 wherein: a sponge layer (5) is arranged between the third packing layer (33) and the water permeable section (12).

6. A percolation catchment pump well with backwash function as in claim 4 wherein: the first packing layer (31) is a coarse sand or quartz sand packing layer, the second packing layer (32) is a gravel packing layer, and the third packing layer (33) is a gravel or pebble packing layer.

7. A percolation catchment pump well with backwash function as in claim 1 wherein: the submersible pump (41) is arranged in the center of an annular surrounded by the backwashing pipe (42).