CN213508796U - Drainage pipe drop well - Google Patents

Abstract

The application provides a drainage pipe drop well belongs to the drainage engineering field. The device comprises a well body, wherein the top of the well body is provided with a well mouth, the interior of the well body is divided into a hydraulic drop room and an operation room which are adjacent left and right by a partition wall, the upper part of the outer side of the hydraulic drop room is connected with a water inlet pipe, and the lower part of the outer side of the operation room is connected with a water outlet pipe; the water inlet pipe is characterized in that a depression angle turning plate, a first depression angle turning plate, a second depression angle turning plate, a first elevation angle turning plate, a second elevation angle turning plate and a water facing turning plate are sequentially arranged on the inner side wall of the water drop room from bottom to top at intervals, the water facing turning plate is located below the water inlet pipe, the first depression angle turning plate, the first elevation angle turning plate and the water facing turning plate are located on the inner side wall, close to the water inlet pipe, of the water drop room, and the depression angle turning plate, the second depression angle turning plate and the second elevation angle turning plate are located on the other inner side wall. The structure can effectively overcome the defect that the falling difference range of the existing drop well is small, the lower space of a well chamber can be effectively utilized, and the filling volume of concrete or brick materials is reduced.

Description

Drainage pipe drop well

Technical Field

The application relates to the field of drainage engineering, in particular to a drainage pipeline drop well.

Background

Along with the continuous development of urbanization, the urban area is continuously expanded, and the municipal drainage pipe network is also larger and larger in scale. Under the general condition, the pipeline sets up the inspection shaft at regular intervals, plays the effect of connecting the trunk pipe on the one hand, and on the other hand can make things convenient for the branch pipe to insert. When the height difference between the upstream and the downstream of the pipeline is too large due to the terrain height difference and the like, the inspection well is usually set as a drop well in order to avoid the water flow to generate large impact on the bottom of the inspection well. Therefore, the drop well has the functions of connecting pipelines and dissipating energy.

In the current municipal drainage engineering design, the drop well is generally set according to the national building standard design drawing set municipal drainage pipeline engineering and affiliated facilities, and is selected according to the pipe diameter and the actual drop difference. According to the current specification of a drawing set, a vertical pipe type drop well is selected for the drop well with the pipe diameter D less than or equal to 200mm, the drop difference range is 1-6 m, and the drop well is only suitable for cast iron pipes; selecting a vertical groove type drop well as a drop well with the pipe diameter D of 200-600 mm, wherein the drop difference range is 1-4 m; the pipe diameter D is 700 ~ 1650 mm's drop well and chooses cascaded drop well for use, and the drop poor scope is 1 ~ 2 m.

However, in practical engineering, the height difference between the upstream and the downstream of the pipeline is more common between 7 and 8m, and even the drop difference is larger and reaches more than 10 m. Therefore, the existing standard diagram is concentrated, the range of the drop difference of the drop well suitable for large pipe diameter is small, only 1-2m, and the requirements of actual engineering are difficult to meet.

The situation is generally solved by adopting 2 ways, namely, a plurality of standard water drop wells are simultaneously arranged and connected in series to achieve the effect of continuous water drop; secondly, the drop well of the drawing set is reformed, the number of steps is increased, the well chamber is deepened, and the wall thickness and the reinforcing bars are correspondingly increased.

However, the above method also brings about problems: (1) the mode of the series connection of the multi-stage drop wells not only occupies more underground space and occupies other underground pipeline positions, but also the cost of excavation and support of the foundation pit is multiplied and is not economical; (2) if a mode of modifying the drawing set stepped drop well is adopted, the number of steps needs to be increased greatly to reach the designed drop height, the well chamber is lengthened invisibly and deepened, the wall thickness of the corresponding structure is increased, and the integral size increment of the well chamber is overlarge. Through calculation, when the drop difference is 6m, the length of a well chamber reaches 11m surprisingly, the method causes that the lower part of the step of the drop well needs a large amount of concrete or brick filling, the excavation earth volume of the pit is large during construction, and the construction difficulty and the construction cost are greatly improved. Meanwhile, when urban underground pipelines are complex and are influenced by underground buildings and structures, the construction can not be carried out by occupying large underground space, and the construction conditions are difficult to meet.

Therefore, a drainage pipeline drop well suitable for large pipe diameter and high drop difference is urgently needed.

SUMMERY OF THE UTILITY MODEL

One of the purposes of this application lies in providing a drainage pipe drop well, aims at improving the problem that current drop well can't be applicable to the construction condition of big pipe diameter, the poor drainage pipe of height drop.

The technical scheme of the application is as follows:

a drainage pipeline drop well comprises a well body, wherein the top of the well body is provided with a well mouth, the interior of the well body is divided into a drop room and an operation room which are adjacent left and right by a partition wall, the upper part of the outer side of the drop room is connected with a water inlet pipe, and the lower part of the outer side of the operation room is connected with a water outlet pipe; the water inlet pipe is characterized in that a depression angle turning plate, at least one first flat angle turning plate, at least one second flat angle turning plate, at least one first elevation angle turning plate, at least one second elevation angle turning plate and a water facing turning plate are sequentially arranged on the inner side wall of the water drop room from bottom to top at intervals, the water facing turning plate is located below the water inlet pipe, the first flat angle turning plate, the first elevation angle turning plate and the water facing turning plate are located on one inner side wall, close to the water inlet pipe, of the water drop room, and the depression angle turning plate, the second flat angle turning plate and the second elevation angle turning plate are located on the other opposite inner side wall of the water drop room.

As a technical scheme of this application, the board is turned over to the water-facing with the contained angle of the wall of a well of well body is 90, first angle of elevation turn over the board, second angle of elevation turn over the board with the contained angle of the wall of a well body is 95, first angle of elevation turn over the board contained angle, second angle of elevation turn over the board with the contained angle of the wall of a well body is 90, angle of depression turn over the board with the contained angle of the wall of a well of the well body is 85.

As a technical scheme of the application, any two adjacent depression angle turning plates, first depression angle turning plates, second depression angle turning plates, first elevation angle turning plates, second elevation angle turning plates or water-facing turning plates are arranged at intervals, and the vertical distance is 500-750 mm; the length of each depression angle turning plate, the first flat angle turning plate, the second flat angle turning plate, the first elevation angle turning plate, the second elevation angle turning plate and the water-facing turning plate is 500-1500 mm.

As a technical scheme of the present application, the depression angle turning plate, the first flat angle turning plate, the second flat angle turning plate, the first elevation angle turning plate, the second elevation angle turning plate and the water-facing turning plate have the same length, the length of each of the first flat angle turning plate, the second elevation angle turning plate and the water-facing turning plate is half of the length of the drop room, and the width of each of the first flat angle turning plate, the second flat angle turning plate and the water-facing turning plate is equal.

As a technical scheme of this application, the well head sets up the top between the operation, be provided with multistage cat ladder from top to bottom on the wall of a well between the operation.

As a technical scheme of this application, the square observation hole that the length of a side is 800mm is seted up on the upper portion of partition wall.

As a technical scheme of this application, be provided with the upper portion maintenance platform on the middle part wall of a well of operation room, be provided with the lower part maintenance platform on the lower part wall of a well, the upper portion maintenance platform is close to square observation hole, the lower part maintenance platform is close to the outlet pipe.

As a technical scheme of this application, the bottom of partition wall with the bottom interval of well body sets up, just install the shaft bottom step on the bottom of well body, the height of shaft bottom step by between the operation to the direction between the drop risees gradually.

As a technical scheme of the application, a flow groove is arranged between the bottom hole step and the water outlet pipe, and the height of the flow groove is gradually reduced from the bottom hole step to the direction of the water outlet pipe.

As a technical scheme of this application, the well body is enclosed to establish by the wall of a well and apron and is formed.

The beneficial effect of this application:

the application discloses a drainage pipeline drop well which is suitable for a drop well with a drainage pipeline pipe diameter D of 1650mm equal to 700 and a drop difference of 2-6 m; the turnover plates are arranged in a turning-back manner, so that the defect that the drop difference range of the existing drop well is small can be effectively overcome, the size of a drop well chamber can be reduced by adopting the turning-back arrangement of the turnover plates, the lower space of the well chamber can be effectively utilized, the filling volume of concrete or brick materials is reduced, the effect of multistage series connection is achieved by using smaller excavation amount, and the manufacturing cost is saved; in addition, the design can quickly dissipate energy and reduce the impact of water flow on the bottom of the drop well; and, the drop room is separated by the partition wall with the operation room, is favorable to the workman to get into and carries out maintenance operation in the well.

Drawings

In order to more clearly explain the technical solutions of the embodiments of the present application, the drawings that are required to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and that for those skilled in the art, other related drawings can be obtained from these drawings without inventive effort.

FIG. 1 is a main sectional view of a drainage pipe drop well according to an embodiment of the present disclosure;

FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;

FIG. 3 is a cross-sectional view taken along line B-B of FIG. 1;

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

Icon: 1-drainage pipeline drop well; 2-well body; 3-well head; 4-partition wall; 5-between drops; 6-operation room; 7-water inlet pipe; 8-water outlet pipe; 9-depression angle turning plate; 10-a first flat-angle turning plate; 11-a second flat angle turning plate; 12-a first elevation flap; 13-a second elevation flap; 14-a water-facing turning plate; 15-climbing a ladder; 16-square observation hole; 17-upper inspection table; 18-lower access panels; 19-a bottom hole step; 20-a launder; 21-well wall; 22-cover plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations.

Thus, the following detailed description of the embodiments of the present application, presented in the accompanying drawings, is not intended to limit the scope of the claimed application, but is merely representative of selected embodiments of the application. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.

It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.

In the description of the present application, it should be noted that the terms "upper" and "lower" are used for indicating the orientation or positional relationship based on the orientation or positional relationship shown in the drawings or the orientation or positional relationship which is usually placed when the utility model is used, and are only for convenience of describing the present application and simplifying the description, but do not indicate or imply that the device or element to be referred must have a specific orientation, be constructed in a specific orientation and operation, and thus, should not be construed as limiting the present application.

Further, in the present application, unless expressly stated or limited otherwise, the first feature may be directly contacting the second feature or may be directly contacting the second feature, or the first and second features may be contacted with each other through another feature therebetween, not directly contacting the second feature. Also, the first feature being above, on or above the second feature includes the first feature being directly above and obliquely above the second feature, or merely means that the first feature is at a higher level than the second feature. A first feature that underlies, and underlies a second feature includes a first feature that is directly under and obliquely under a second feature, or simply means that the first feature is at a lesser level than the second feature.

Furthermore, the terms "horizontal", "vertical" and the like do not imply that the components are required to be absolutely horizontal or pendant, but rather may be slightly inclined. For example, "horizontal" merely means that the direction is more horizontal than "vertical" and does not mean that the structure must be perfectly horizontal, but may be slightly inclined.

In the description of the present application, it is also to be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present application can be understood in a specific case by those of ordinary skill in the art.

Example (b):

referring to fig. 1 and fig. 2 to 4, the present application provides a drainage pipe drop well 1, which includes a well body 2, wherein the well body 2 is enclosed by a well wall 21 and a cover plate 22. Wherein, well head 3 has been seted up at the top of well body 2, and inside by partition wall 4 cut apart into about adjacent drop 5 and operation room 6, the bottom of partition wall 4 and the bottom interval setting of well body 2. The water drop room 5 is the main place for water drop energy dissipation, and the operation room 6 is the place for workers to go into the well for maintenance. Water flow enters the drop room 5 through the water inlet pipe 7, and flows out of the water outlet pipe 8 at the bottom after energy dissipation of drop.

Firstly, determining the drop difference and the whole size of a drop well according to the pipe diameter and the height difference of upstream and downstream pipelines, wherein the length of the drop well is the sum of the lengths of a drop room 5 and a maintenance room as well as the thicknesses of a partition wall 4 and a well wall 21; the well wall 21 and the partition wall 4 are both reinforced concrete structure walls, the thickness of the well wall is determined according to drop difference and pipe diameter, the minimum wall thickness of the well wall 21 is 240mm, and the minimum wall thickness of the partition wall 4 is 200 mm. The net width of the drop well is determined according to the outer diameter two sides of the water inlet pipe 7 and the water outlet pipe 8 respectively added with 200 plus 300 mm. The length of each turning plate is determined according to the drop difference and the pipe diameter, the length of each turning plate is 500-1500mm, and the net length of the drop chamber 5 is the sum of the lengths of the two turning plates. The width of the overhaul room is equal to the width of the drop well, and the length of the overhaul room is 1000-1200mm, so that one worker can be fully accommodated for the operation of going into the well.

In the embodiment, the upper part of the outer side of the drop bay 5 is connected with a water inlet pipe 7, and the lower part of the outer side of the operating bay 6 is connected with a water outlet pipe 8; the bottom of the well body 2 is provided with a bottom-hole step 19, and the height of the bottom-hole step 19 is gradually increased from the operation room 6 to the drop room 5. A flow groove 20 is arranged between the bottom hole step 19 and the water outlet pipe 8, and the height of the flow groove 20 is gradually reduced from the bottom hole step 19 to the direction of the water outlet pipe 8.

Furthermore, a depression angle turning plate 9, at least one first flat angle turning plate 10, at least one second flat angle turning plate 11, at least one first elevation angle turning plate 12, at least one second elevation angle turning plate 13 and a water-facing turning plate 14 are sequentially arranged on the inner side wall of the drop bay 5 from bottom to top at intervals; wherein, the water-facing turning plate 14 is positioned below the water inlet pipe 7, the first flat angle turning plate 10, the first elevation angle turning plate 12 and the water-facing turning plate 14 are positioned on one inner side wall of the water drop room 5 close to the water inlet pipe 7, and the depression angle turning plate 9, the second flat angle turning plate 11 and the second elevation angle turning plate 13 are positioned on the other opposite inner side wall of the water drop room 5.

In this embodiment, 4 types of turning plates are arranged inside the drop room 5, and the turning plates are respectively arranged on the well wall 21 and the partition wall 4 and are folded back. Wherein, the water-facing turning plate 14 and the depression angle turning plate 9 are respectively positioned at the top and the bottom of the well body 2 and are respectively provided with 1 piece; the first flat angle turning plate 10, the second flat angle turning plate 11, the first elevation angle turning plate 12 and the second elevation angle turning plate 13 are all arranged in groups, each group comprises 2 plates, and the number of the plates can be arranged in a single group or multiple groups according to the water drop depth.

It should be noted that, in this embodiment, an included angle between the water-facing flap 14 and the well wall 21 of the well body 2 is 90 °, included angles between the first elevation flap 12 and the well wall 21 of the well body 2 are both 95 °, an included angle between the first flat-angle flap 10 and the second flat-angle flap 11 is 90 °, and an included angle between the depression flap 9 and the well wall 21 of the well body 2 is 85 °. The water flow sequentially passes through the water facing turning plate 14, the first elevation turning plate 12, the second elevation turning plate 13, the first flat-angle turning plate 10, the second flat-angle turning plate 11 and the depression turning plate 9, gradually falls between the turning plates in a turning-back state, gradually dissipates energy in the falling process, finally falls to a shaft bottom step 19, enters the flow groove 20 and is discharged from the water outlet pipe 8.

It should be noted that, in this embodiment, any two adjacent depression angle turning plates 9, first depression angle turning plates 10, second depression angle turning plates 11, first elevation angle turning plates 12, second elevation angle turning plates 13, or water-facing turning plates 14 are arranged at intervals, and the vertical distance between any two adjacent depression angle turning plates 9, first depression angle turning plates 10, second depression angle turning plates 11, first elevation angle turning plates 12, second elevation angle turning plates 13, or water-facing turning plates 14 is 500-750 mm; the length of each depression angle turning plate 9, the first flat angle turning plate 10, the second flat angle turning plate 11, the first elevation angle turning plate 12, the second elevation angle turning plate 13 and the water-facing turning plate 14 is 500-1500 mm.

The depression angle turning plate 9, the first flat angle turning plate 10, the second flat angle turning plate 11, the first elevation angle turning plate 12, the second elevation angle turning plate 13 and the water-facing turning plate 14 are the same in length, the length of each of the depression angle turning plate is half of the length of the drop bay 5, and the width of each of the depression angle turning plate and the water-facing turning plate is equal to the width of the drop bay 5.

It should be noted that, in this embodiment, the length of the single flap and the vertical distance between the adjacent flaps are determined according to the pipe diameter of the water inlet pipe 7, and the larger the pipe diameter, the larger the flap length is, and the larger the vertical distance is.

In addition, for the water drop well with the drop difference of only 2-3m, the first flat angle turning plate 10 and the second flat angle turning plate 11 are not arranged.

It should be noted that, in this embodiment, the wellhead 3 is arranged on the top of the operation room 6, and the multistage ladder 15 is arranged on the well wall 21 of the operation room 6 from top to bottom. Make things convenient for workman to go into the pit to maintain, and drop 5 and operation room 6 divide into two independent spaces with partition wall 4, do not influence workman's inspection, maintenance.

In the present embodiment, a square observation hole 16 having a side length of 800mm is formed in the upper portion of the partition wall 4, and a worker can observe the inside of the drop bay 5 through the square observation hole 16.

In this embodiment, an upper maintenance platform 17 is disposed on a middle shaft wall 21 of the operating room 6, a lower maintenance platform 18 is disposed on the lower shaft wall 21, the upper maintenance platform 17 is close to the square observation hole 16, and the lower maintenance platform 18 is close to the water outlet pipe 8. The bottom plates of the upper overhaul platform 17 and the lower overhaul platform 18 are semi-open platforms, can bear the weight of maintenance personnel and equipment, can prevent water accumulation, and can be directly entered into the overhaul platforms from the crawling ladder 15 for inspection and maintenance operation by workers. The upper maintenance platform 17 is arranged at the lower 1500mm part of the square observation hole 16, and the lower maintenance platform 18 is positioned at the upper part of the launder 20 and at the lower end of the partition wall 4.

The flow groove 20 is arranged in the same way as a common inspection well, gradually transits from the bottom step 19 to the water outlet, and the structure form of the lower half part of the flow groove and the upper half part of the flow groove is semi-circular and rectangular close to the water outlet, so that smooth drainage is facilitated.

The size of the drop well is determined according to the pipe diameter and drop difference of the pipeline, the well body of the drop well, the partition wall 4, the turnover plate and the like are all of reinforced concrete structures, and the wall thickness and the reinforcement amount are determined according to the buried depth.

Specifically, water flow enters the drop room 5 from the water inlet pipe 7 and is guided by the water-facing turning plate 14, and the water-facing turning plate 14 is arranged in a single piece and forms an angle of 90 degrees with the well wall 21; the water flows out of the water-facing turning plate 14, the water flow starts to drop downwards, the water flows enter the areas of the first elevation turning plate 12 and the second elevation turning plate 13 to perform primary energy dissipation, the first elevation turning plate 12 and the second elevation turning plate 13 are respectively arranged on the partition wall 4 and the well wall 21 and are arranged in pairs from left to right, the distance between the adjacent turning plates is 500 plus 750mm, the turning plates are not coplanar, the included angles between the adjacent turning plates and the well wall 21 and the partition wall 4 are 95 degrees, the turning plates incline upwards, the water flow performs turning motion between the first elevation turning plate 12 and the second elevation turning plate 13, and the impact force of the water flow can be better. If the drop difference is large, a plurality of groups of first elevation angle turning plates 12 and second elevation angle turning plates 13 can be additionally arranged to enable the water flow to perform multiple turning motions.

Furthermore, water flows flowing out of the first elevation angle turning plate 12 and the second elevation angle turning plate 13 enter the first flat angle turning plate 10 and the second flat angle turning plate 11 to carry out secondary energy dissipation, the first flat angle turning plate 10 and the second flat angle turning plate 11 are also arranged on the partition wall 4 and the well wall 21 and are arranged in pairs from left to right, the distance between every two adjacent turning plates is 500 plus 750mm, the turning plates are not coplanar, the included angle is 90 degrees, and the water flows carry out return motion on the first flat angle turning plate 10 and the second flat angle turning plate 11. Similarly, if the drop difference is large, a plurality of groups of first flat-angle turning plates 10 and second flat-angle turning plates 11 can be additionally arranged to enable the water flow to perform multiple turn-back movements, so that the effect of continuously dropping and dissipating energy step by step is achieved.

Furthermore, water flows flowing out of the first flat-angle turning plate 10 and the second flat-angle turning plate 11 enter the area of the last-stage turning plate depression angle turning plate 9, the depression angle turning plate 9 is a single-piece turning plate and is arranged on the partition wall 4, an included angle between the depression angle turning plate 9 and the partition wall 4 is 85 degrees, the downward inclination is realized, and the depression angle turning plate 9 bears the water flows of the first flat-angle turning plate 10 and the second flat-angle turning plate 11 and guides the water flows into a well bottom step 19 to perform three-stage energy dissipation.

Furthermore, the vertical distance between the bottom hole step 19 and the depression angle turning plate 9 is 500mm, the length of the bottom hole step 19 is 500mm, the height of the single-stage step is 300mm, the width of the single-stage step is the same as the width of the drop space 5, and the number of the steps is determined by the pipe diameter of the water outlet pipe 8 and the length of the drop space 5. The water flow falls step by step on the bottom hole step 19 and flows into the chute 20, and the chute 20 is provided with a certain inclined plane and guides the water flow to the water outlet pipe 8 for discharging.

Furthermore, each turning plate is a prestressed reinforced concrete plate, and is pre-tensioned to resist the impact force of water flow. The thickness and the reinforcement ratio of each turnover plate are determined by the drop difference and the pipe diameter, and the minimum thickness is 100 mm. The bottom hole step 19 and the launder 20 are both plain concrete poured, and the concrete grade is not less than C25.

Furthermore, the joint of the well wall 21 and the water inlet pipe 7 and the water outlet pipe 8 should be reinforced, and particularly, a concrete sleeve is arranged at the joint of the well wall 21 and the water inlet pipe 7 to prevent the water outlet pipe 8 from being crushed.

Furthermore, the overhaul room is separated from the drop room 5 and is not influenced by the drop room 5. The upper part of the partition wall 4 is provided with a square observation hole 16 with the side length of 800mm, the square observation hole 16 is slightly higher than the bottom of the water inlet pipe 7, and workers can observe the operation condition of the water drop chamber 5 through the square observation hole 16. Simultaneously, the wall of a well 21 between overhauing sets up cat ladder 15, can go down to first maintenance platform through cat ladder 15 after getting off from well head 3, and first maintenance platform and square observation hole 16 distance 1500mm, the workman sees through square observation hole 16 can be more light inspection operation here platform. The second overhauls the platform setting on overhauls lower part chute 20, apart from chute 20 top 500mm, the workman goes down here and can dredge the maintenance to chute 20 and outlet pipe 8.

Further, all turn over the board and overhaul the platform and all pour with the wall of a well 21 in step, pour and install apron 22 on the wall of a well 21 after accomplishing, apron 22 can on-spot independent preparation, later builds the pit shaft again and installs the well lid.

The water drainage pipeline drop well 1 is suitable for a drop well with the pipe diameter D of 700 + 1650mm and the drop difference of 2-6 m; the drop well is characterized in that a depression angle turning plate 9, at least one first flat angle turning plate 10, at least one second flat angle turning plate 11, at least one first elevation angle turning plate 12, at least one second elevation angle turning plate 13 and a water facing turning plate 14 which are arranged in the drop well are arranged on two sides of a well wall 21 in a crossed mode and are arranged in a turning-back mode, the defect that the drop difference range of the existing drop well is small can be effectively overcome through the arrangement of the turning-back turning plates, the size of a drop well chamber can be reduced through the turning-back arrangement of the turning plates, the lower space of the well chamber can be effectively utilized, the filling volume of concrete or brick materials is reduced, the effect of multistage series connection is achieved through; in addition, the design can quickly dissipate energy and reduce the impact of water flow on the bottom of the drop well; and, drop 5 and operation room 6 are separated by partition wall 4, are favorable to the workman to get into the well and carry out maintenance operation.

The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A drainage pipeline drop well is characterized by comprising a well body, wherein the top of the well body is provided with a well mouth, the interior of the well body is divided into a drop room and an operation room which are adjacent left and right by a partition wall, the upper part of the outer side of the drop room is connected with a water inlet pipe, and the lower part of the outer side of the operation room is connected with a water outlet pipe; the water inlet pipe is characterized in that a depression angle turning plate, at least one first flat angle turning plate, at least one second flat angle turning plate, at least one first elevation angle turning plate, at least one second elevation angle turning plate and a water facing turning plate are sequentially arranged on the inner side wall of the water drop room from bottom to top at intervals, the water facing turning plate is located below the water inlet pipe, the first flat angle turning plate, the first elevation angle turning plate and the water facing turning plate are located on one inner side wall, close to the water inlet pipe, of the water drop room, and the depression angle turning plate, the second flat angle turning plate and the second elevation angle turning plate are located on the other opposite inner side wall of the water drop room.

2. The drainage pipeline drop well of claim 1, wherein the included angle between the water-facing turning plate and the well wall of the well body is 90 degrees, the included angles between the first elevation-angle turning plate and the well wall of the well body are 95 degrees, the included angles between the first flat-angle turning plate and the well wall of the well body are 90 degrees, and the included angle between the depression-angle turning plate and the well wall of the well body is 85 degrees.

3. The drainage pipeline drop well as claimed in claim 1, wherein any two adjacent depression angle turning plates, the first flat angle turning plate, the second flat angle turning plate, the first elevation angle turning plate, the second elevation angle turning plate or the water-facing turning plate are arranged at intervals, and the vertical distance is 500-750 mm; the length of each depression angle turning plate, the first flat angle turning plate, the second flat angle turning plate, the first elevation angle turning plate, the second elevation angle turning plate and the water-facing turning plate is 500-1500 mm.

4. The drainage pipeline drop well of claim 1, wherein the depression angle turning plate, the first flat angle turning plate, the second flat angle turning plate, the first elevation angle turning plate, the second elevation angle turning plate and the water-facing turning plate are the same in length, the length of each depression angle turning plate is half of the length of the drop room, and the width of each depression angle turning plate is equal to the width of the drop room.

5. The drainage pipeline drop well as claimed in claim 1, wherein the wellhead is arranged at the top of the operating room, and the wall of the operating room is provided with a multi-stage ladder stand from top to bottom.

6. The drainage pipeline drop well as claimed in claim 1, wherein the upper part of the partition wall is provided with a square observation hole with the side length of 800 mm.

7. The drainage pipeline drop well of claim 6, wherein an upper overhaul platform is arranged on the middle well wall of the operating room, a lower overhaul platform is arranged on the lower well wall, the upper overhaul platform is close to the square observation hole, and the lower overhaul platform is close to the water outlet pipe.

8. The drainage pipeline drop well as claimed in claim 1, wherein the bottom end of the partition wall is spaced from the bottom of the well body, a bottom step is installed on the bottom of the well body, and the height of the bottom step is gradually increased from the operation room to the drop room.

9. The drainage pipeline drop well of claim 8, wherein a launder is arranged between the bottom-hole step and the water outlet pipe, and the height of the launder is gradually reduced from the bottom-hole step to the direction of the water outlet pipe.

10. The drainage pipeline drop well of claim 1, wherein the well body is enclosed by a well wall and a cover plate.

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