CN218786895U

CN218786895U - Multifunctional drainage well

Info

Publication number: CN218786895U
Application number: CN202223189272.XU
Authority: CN
Inventors: 陈伟楠; 刘天顺
Original assignee: Tianjin Municipal Engineering Design and Research Institute
Current assignee: Tianjin Municipal Engineering Design and Research Institute
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-04-04
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a multifunctional drainage well, which comprises a water inlet pipeline and a water outlet pipeline, wherein the drainage well adopts a cuboid concrete structure, and the included angle of the water inlet pipeline and the water outlet pipeline in the horizontal direction is 45-180 degrees; the water inlet pipeline is higher than the water outlet pipeline in the vertical direction, a tee joint with the same diameter is arranged at a water inlet of the water outlet pipeline, one interface of the tee joint is fixedly connected with the water inlet of the water outlet pipeline, the other two interfaces are arranged in the vertical direction, wherein the interface facing upwards is connected with an upper short pipe, and the interface facing downwards is connected with a lower short pipe; the top of the upper short pipe is provided with a blind flange.

Description

Multifunctional drainage well

Technical Field

The utility model relates to a town drainage system and sewage and wastewater treatment field especially relate to a multi-functional drainage well that is used for urban drainage pipe network system and sewage and wastewater treatment station.

Background

The town drainage pipe network system plays a significant role in the development of modern towns and is one of important signs for measuring the level of the modern towns. A scientific and smooth drainage system is ensured in cities and towns, and the system is an important guarantee for timely removing dirt, waste water and rainwater in cities and avoiding the threat of urban inland inundation.

On one hand, in the face of the increasing of urban population and the rapid development of economy, the risk of increasing the types and the quantity of pollutants in the urban drainage system is brought, and the stable operation of the drainage system is influenced, so that the problem that how to timely discharge the wastes in the pipeline and not bring the wastes into a downstream pipeline is one of the problems to be solved urgently is also solved.

On the other hand, the problem of misconnection of pipelines exists in part of old urban areas, when the problem occurs, if water sealing is not done, waste gas such as methane accumulated in a sewage pipe network system can be discharged into an upstream pipeline system, and if open fire occurs, explosion can occur. This problem has occurred more than once in the operation of sewage treatment plants, resulting in serious casualties due to the explosion of the biogas accumulation in the workshop.

On the other hand, in a town drain pipe network system, if the height difference of upstream and downstream pipelines is large, an energy dissipation well needs to be arranged according to the design standard of outdoor drainage, the traditional energy dissipation well occupies a large area, and in the face of towns with higher development strength and denser municipal pipelines, how to miniaturize accessory facilities becomes one of the focuses of current social attention.

As a basic link and an important link in the construction of town drainage pipe networks, the drainage well which occupies a small area and has various functions (functions of scum removal, energy dissipation, water sealing and the like) is developed, and the key for solving the problems is provided.

SUMMERY OF THE UTILITY MODEL

The utility model aims at overcoming not enough among the prior art, the utility model provides an it is little to take up an area of, the function is integrated, changeable multi-functional drainage well, when the improvement is dealt with narrow and small, complicated space environment, can in time separate dross in dirty, the waste water and the mud that sinks, simultaneously as the upstream pipe way difference in height is great, play the drop energy dissipation effect, and pipeline adjustment realizes the water seal function in the accessible well, prevent that low reaches waste gas from getting into upstream pipe-line system, thereby reduce the risk that exhaust gas explosion caused personnel, loss of property.

The utility model aims at realizing through the following technical scheme:

a multifunctional drainage well comprises a water inlet pipeline and a water outlet pipeline, wherein the drainage well is of a cuboid concrete structure, and the included angle of the water inlet pipeline and the water outlet pipeline in the horizontal direction ranges from 45 degrees to 180 degrees; the water inlet pipeline is higher than the water outlet pipeline in the vertical direction, a tee joint with the same diameter is arranged at a water inlet of the water outlet pipeline, one interface of the tee joint is fixedly connected with the water inlet of the water outlet pipeline, the other two interfaces are arranged in the vertical direction, wherein the interface facing upwards is connected with an upper short pipe, and the interface facing downwards is connected with a lower short pipe; the top of the upper short pipe is provided with a blind flange.

Furthermore, the length and width of the drainage well range from 1.2 to 1.4 meters, the pipe diameters of the upstream pipeline and the downstream pipeline corresponding to the water inlet pipeline and the water outlet pipeline are less than or equal to DN500, and if the pipe diameters of the upstream pipeline and the downstream pipeline are greater than DN500, the size of the drainage well is correspondingly increased. Furthermore, the height difference between the bottom elevation of the lower short pipe and the bottom elevation of the water outlet pipeline is at least 0.6-0.8 m.

Furthermore, if the upper part of the drainage well needs to be additionally provided with a clearing space, the upper short pipe is replaced by a reducing pipe with the pipe diameter different from that of the three-way joint.

Further, the top of the upper short pipe is at least 0.5m higher than the top of the water inlet pipeline.

Compared with the prior art, the utility model discloses a beneficial effect that technical scheme brought is:

1. the utility model discloses on traditional drainage well basis, will arrange the dross, arrange heavy mud, drop energy dissipation function and water seal function integration, richened the function of well.

2. The utility model discloses a multi-functional well's miniaturization to adapt to municipal piping system's complexity and intensive nature, with the well miniaturization, and when not influencing original drainage function, can in time separate out the dross in dirty, waste water or sink mud, improved the passability of pipeline, also reduced running cost such as drainage pipe system mediation.

3. The water flow flows into the lower short pipe from the water inlet pipeline, so that the water flow direction is changed from the horizontal direction to the vertical direction, the water flow is obviously deflected, and the energy in the water can be partially eliminated in the process of overcoming the change of the water flow direction. In addition, because the water level in the drainage well is higher than the pipe bottom elevation of the water outlet pipeline, the water inlet pipeline is higher than the water outlet pipeline, and water flow falls to the water level in the drainage well from the water inlet pipeline, a part of energy can be eliminated. The utility model provides a drop adopts the hydraulic energy dissipation mode, carries out the energy dissipation through the transformation of flow direction, has reduced the size of well to the engineering cost has been reduced.

4. The functions of scum discharge and sludge discharge are realized, water flow in the well chamber flows into the short pipe at the lower part from the water inlet pipeline, so that the water flow direction is changed from the horizontal direction to the vertical direction, and the water flow is obviously deflected, so that waste with larger weight in sewage and waste water can be deposited at the bottom of the well chamber. Because the top of the upper short pipe is at least 0.5 meter higher than the top of the water inlet pipeline, light floating slag in sewage and wastewater is intercepted by the upper short pipe, the light floating slag and heavy sinking mud in the sewage and wastewater are separated, and the drainage well is cleaned by regularly cleaning.

5. The water sealing function is realized, when the height difference between the bottom elevation of the lower short pipe and the bottom elevation of the water outlet pipe is more than 0.6-0.8 m, a water sealing layer of 0.6-0.8 m is formed, and the waste generated in the downstream pipeline can be prevented from being discharged into a well and even discharged into an upstream pipeline or a room through the water inlet pipeline. The risk of explosion caused by enrichment of harmful, inflammable and explosive waste gas in an upstream pipeline or a room is reduced, and the personal safety of personnel is effectively guaranteed.

Drawings

FIG. 1 is a schematic top view of a multi-purpose drainage well according to an embodiment.

FIG. 2 is a schematic cross-sectional view of the tee junction connecting the upper spool in an embodiment.

FIG. 3 is a schematic cross-sectional view of a tee coupling connecting a reducer in an embodiment.

Reference numerals: 1-water inlet pipeline, 2-water outlet pipeline, 3-three-way joint, 4-lower short pipe, 5-upper short pipe, 6-blind flange and 7-reducing pipe.

Detailed Description

The present invention will be described in further detail with reference to the following drawings and specific embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the invention.

As shown in fig. 1 to fig. 3, the multifunctional drainage well provided by this embodiment includes a water inlet pipe 1 and a water outlet pipe 2, wherein the pipe diameters of the upstream and downstream pipes corresponding to the water inlet pipe 1 and the water outlet pipe 2 are not greater than DN500, which is optimal, and if the pipe diameters are greater than DN500, the size of the drainage well needs to be increased correspondingly.

The drainage well adopts a cuboid concrete structure, the net sizes A and B of the drainage well are generally not more than 1.2-1.4 meters, the directions of the water inlet pipeline 1 and the water outlet pipeline 2 are both indicated, the specific directions of the water inlet pipeline 1 and the water outlet pipeline 2 can be adjusted according to actual needs, the included angle C of the water inlet pipeline 1 and the water outlet pipeline 2 in the horizontal direction can be adjusted between 45 degrees and 180 degrees, and the angle application range is large.

The water inlet pipeline 1 is higher than the water outlet pipeline 2 in the vertical direction, the water inlet of the water outlet pipeline 2 is provided with a tee joint 3 with the same diameter, one interface of the tee joint 3 is fixedly connected with the water inlet of the water outlet pipeline 2, the other two interfaces are arranged in the vertical direction, wherein the interface facing to the upper part is connected with an upper short pipe 5, and the interface facing to the lower part is connected with a lower short pipe 4; the top of the upper short pipe 5 is provided with a blind flange 6.

Specifically, the drain well of this embodiment can realize row dross and row silt function. The water flows into the well chamber from the water inlet pipeline 1, and the water flows into the water outlet pipeline 2 from the short pipe 4 and the three-way joint 3, and then is discharged into a downstream pipeline. Because the water flow flows into the lower short pipe 4 from the water inlet pipeline 1, the water flow direction is changed from the horizontal direction to the vertical direction, the water flow is obviously deflected, and wastes with larger weight in sewage and waste water can be deposited at the bottom of the well chamber. In this embodiment, the top of the upper short pipe 5 is at least 0.5m higher than the top of the water inlet pipe 1, so light scum in sewage and waste water is intercepted by the upper short pipe 5. Based on the principle, light floating slag and heavy settled sludge in sewage and wastewater are separated, and the drainage well is cleaned by regularly cleaning.

The drainage well of this embodiment can realize drop energy dissipation function. Because the water flow flows into the lower short pipe 4 from the water inlet pipeline 1, the water flow direction is changed from the horizontal direction to the vertical direction, the water flow is obviously deflected, and the energy in the water is partially eliminated in the process that the water flow overcomes the change of the flow direction. In addition, because the water level in the well is higher than the elevation of the pipe bottom of the water outlet pipe 2, when the height difference between the centers of the water inlet pipe 1 and the water outlet pipe 2 is large, water flow falls down to the water level in the well from the water inlet pipe 1, and a part of energy can be eliminated.

The drainage well of this embodiment can realize the water seal function. Water flows into the well chamber from the water inlet pipeline 1, flows into the water outlet pipeline 2 from the short pipe 4 and the three-way joint 3, is discharged into a downstream pipeline along with the water, and a blind flange 6 is required to be arranged at the top of the upper short pipe 5 for realizing the water sealing function. Because the water level in the well needs to be higher than the elevation of the pipe bottom of the water outlet pipeline 2 to be discharged, the water level in the well can be stabilized above the pipe bottom of the water outlet pipeline 2. When the height difference between the bottom elevation of the lower short pipe 4 and the bottom elevation of the water outlet pipe 2 is larger than 0.6-0.8 m, a water sealing layer of 0.6-0.8 m is formed, so that waste generated in a downstream pipeline can be prevented from being discharged into a well, and even discharged into an upstream pipeline or a room through the water inlet pipe 1.

Specifically, if the upper part of the drainage well needs to be additionally provided with a clearing space, the problem can be solved by reducing the pipe diameter of the upper short pipe, a reducing pipe 7 can be arranged at the upper part of the three-way joint 3, and the pipe diameter of the original upper pipe section is reduced to DN100, which is shown in detail in figure 3.

Specifically, in the embodiment, the drainage well is practically applied to a certain sewage treatment plant engineering, and the application scene is the access position of the supernatant and the drainage main pipe after the sludge dewatering machine room is dewatered. The pipe diameters of the water inlet pipeline and the water outlet pipeline are DN400, the sizes in the well are 1400 multiplied by 3500mm, the height difference between the top elevation h1 of the water inlet pipeline and the top elevation of the blind flange is 0.5m, the height difference between the bottom elevation h2 of the water outlet pipeline and the bottom elevation of the lower short pipe is 0.7m, and the height difference between the water inlet pipeline and the water outlet pipeline is 1m. Through the design, the well can simultaneously realize the functions of scum removal, sludge settling, drop energy dissipation and water sealing.

Separated scum and settled sludge are cleaned for 2 times per month, so that waste separation in the wastewater is realized, and the problems of pipeline blockage and the like which are possibly caused are prevented.

Through the arrangement of the height difference of 0.7m between the water outlet pipeline and the lower short pipe, water sealing is realized, and waste in the sewage pipeline is prevented from being enriched in a sludge dewatering machine room through the drainage well, so that the running risk is reduced.

The hydraulic energy dissipation mode is adopted to realize the drop function, the energy dissipation is realized through the transformation of the flowing direction, the size of the drop well is reduced, the arrangement of various pipelines in a sewage plant area is facilitated, and the space is saved.

The above description of the invention is given by way of example only, and it is to be understood that any simple modifications, adaptations or equivalent replacements which can be carried out by a person skilled in the art without expending any inventive effort, fall within the scope of protection of the invention, without departing from the core of the invention.

The present invention is not limited to the above-described embodiments. The above description of the embodiments is intended to describe and illustrate the technical solutions of the present invention, and the above embodiments are merely illustrative and not restrictive. Those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention as defined by the appended claims.

Claims

1. A multifunctional drainage well comprises a water inlet pipeline and a water outlet pipeline, and is characterized in that the drainage well is of a cuboid concrete structure, and the included angle of the water inlet pipeline and the water outlet pipeline in the horizontal direction ranges from 45 degrees to 180 degrees; the water inlet pipeline is higher than the water outlet pipeline in the vertical direction, a tee joint with the same diameter is arranged at a water inlet of the water outlet pipeline, one interface of the tee joint is fixedly connected with the water inlet of the water outlet pipeline, the other two interfaces are arranged in the vertical direction, wherein the interface facing upwards is detachably connected with an upper short pipe, and the interface facing downwards is connected with a lower short pipe; the top of the upper short pipe is provided with a blind flange.

2. The multifunctional drainage well according to claim 1, wherein the length and width of the drainage well range from 1.2 to 1.4 m, the pipe diameters of the upstream and downstream pipes corresponding to the water inlet pipe and the water outlet pipe are less than or equal to DN500, and if the pipe diameters of the upstream and downstream pipes are greater than DN500, the size of the drainage well is correspondingly increased.

3. The multifunctional drainage well according to claim 1, wherein the height difference between the bottom elevation of the lower short pipe and the bottom elevation of the outlet conduit is at least 0.6-0.8 m.

4. The multifunctional drainage well according to claim 1, wherein if the upper part of the drainage well needs to be increased in clearance space, the upper short pipe is replaced by a reducing pipe with the different diameter from the tee joint.

5. A multi-functional drainage well according to claim 1, wherein the top of the upper stub pipe is at least 0.5 meters above the top of the inlet conduit.