CN212715248U

CN212715248U - Assembled inspection shaft

Info

Publication number: CN212715248U
Application number: CN202021196609.8U
Authority: CN
Inventors: 陈建华; 王强; 刘安强; 陈永峰
Original assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Current assignee: Wuhu Xinxing Ductile Iron Pipes Co Ltd
Priority date: 2020-06-24
Filing date: 2020-06-24
Publication date: 2021-03-16
Anticipated expiration: 2030-06-24

Abstract

The utility model discloses an assembled inspection shaft has: a connecting cylinder buried under a road surface; the upper end of the shaft is connected with the lower end of the connecting cylinder through a pipe clamp, and a pipe fitting is arranged on the pipe clamp; the upper end of the well chamber is connected with the lower end of the shaft, and a main pipe is arranged on the well chamber; the bed course sets up in road surface lower floor, and the bed course passes through retaining ring and connecting cylinder cooperation, reduces the production degree of difficulty of well room, the allocation and transportation in convenient transportation and the project installation, and the assembly is simple convenient, and assembly structure stability is good.

Description

Assembled inspection shaft

Technical Field

The utility model belongs to the technical field of urban drainage pipe, especially, relate to an assembled inspection shaft.

Background

The inspection well is used as a mixed junction for connecting the existing urban drainage pipeline network, is installed in a drainage pipeline network in a matching way with a main pipeline, and realizes the periodic inspection, cleaning and dredging functions of the pipeline network.

In the process of implementing the present invention, the inventor finds that the prior art has at least the following problems: the assembled inspection well in the prior art usually adopts cement concrete module assembled inspection well, brick assembled inspection well and plastics assembled inspection well, and the prior art has following shortcoming:

1. the concrete module assembly type inspection well and the brick assembly type inspection well are rigidly connected with the pipeline, so that the foundation settlement resistance is poor, the joint is easy to leak, and the well chamber is poor in corrosion resistance; the construction period is long, the engineering cost is high, the service life is short, and the materials cannot be recycled and wasted;

2. the plastic assembly type inspection well body has low strength, and is easy to break under stress to cause secondary pollution to a water body; the method is limited in use environment, and is generally suitable for a shallow buried environment with small road surface load; the application specification is limited, and DN of a general pipeline is less than or equal to 400; the secondary recovery is not timely, the utilization is unreasonable, and the environment and the human life are seriously affected.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an allocation and transportation in the production degree of difficulty, the convenient transportation and the project installation of reduction well room is provided, and the assembly is simple convenient, the assembled inspection shaft that assembly structure stability is good.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a fabricated manhole having:

a connecting cylinder buried under a road surface;

the upper end of the shaft is connected with the lower end of the connecting cylinder through a pipe clamp, and a pipe fitting is arranged on the pipe clamp;

the upper end of the well chamber is connected with the lower end of the shaft, and a main pipe is arranged on the well chamber;

the cushion layer is arranged on the lower layer of the pavement and matched with the connecting cylinder through the check ring.

And sealing rings are arranged at the clamping ends of the well chamber and the shaft.

Still have inspection well lid, inspection well lid with the upper end of connecting cylinder is connected and is sealed the upper end of connecting cylinder.

The shaft is a ductile iron pipe; the well chamber is made of nodular cast iron.

One of the technical scheme has following advantage or beneficial effect, has solved because of the too big production, transportation, the project installation difficult problem that leads to assembled inspection shaft height to bring of trunk line bore, reduces the production degree of difficulty of well room, the allocation and transportation in convenient transportation and the project installation, and the assembly is simple convenient, and assembly structure stability is good.

Drawings

Fig. 1 is a schematic structural diagram of a fabricated manhole provided in an embodiment of the present invention;

FIG. 2 is a schematic structural view of the fabricated manhole of FIG. 1;

the labels in the above figures are: 1. manhole cover, 2, support ring, 3, retainer ring, 4, well chamber, 41, upper well chamber, 42, lower well chamber, 5, shaft, 6, cushion layer, 7 and road surface.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention clearer, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.

Referring to fig. 1-2, a fabricated manhole has:

a connecting cylinder buried under a road surface;

the upper end of the shaft is connected with the lower end of the connecting cylinder through a pipe clamp, and a pipe fitting is arranged on the pipe clamp; the saddle type pipe clamp and the pipe fittings are cast and molded by adopting a lost foam process; a shaft is cut and selected by a centrifugal nodular cast iron pipe according to the requirement of the on-site construction height of the inspection well; the inspection well cover is integrally cast and molded by adopting a vertical line casting process.

The upper end of the well chamber is connected with the lower end of the shaft, and a main pipe is arranged on the well chamber; the nodular cast iron inspection well chamber consists of a well chamber and a main pipe. The well chamber can be designed with water inlets and water outlets with different turning directions, different diameters and certain drop height according to the requirements of a construction site, the inspection well can be divided into a straight well, a three-way well, a four-way well, a turning well, a drop well branch and the like, and can be divided into a launder well with a water flow guide arc and a sediment trap with a sediment chamber according to different functions of the well chamber.

The bed course sets up in road surface lower floor, and the bed course passes through retaining ring and connecting cylinder cooperation.

The nodular cast iron inspection shaft can be applied to buried drainage pipe network construction, river drainage pipe network construction and pipe gallery pipe network construction, and the technical problem of the drainage inspection shaft in the prior art in the installation and application process is solved. The shaft, the inspection well cover, the pipe fittings with the functions of shunting, overflowing and exhausting on the shaft, the saddle type pipe clamps (haversian joints and mouth openers) and other parts which are matched with the assembled nodular cast iron inspection well are integrally assembled and installed in the same material and the same service life, and meanwhile, the nodular cast iron pipe is matched to construct and install a drainage pipe network, so that the same service life cycle of the whole pipe network can be realized, and the overhaul and maintenance cost of later-stage pipe network operation is effectively reduced.

The inspection well chamber and the pipeline are connected in a socket and spigot type and flange plate mode, and a rubber sealing ring is matched, so that the inspection well chamber is safe and reliable, and prevents sewage from leaking outwards; the shaft and the well chamber are installed by adopting a spigot-and-socket type matched rubber sealing ring, so that overground or underground water is prevented from entering the well chamber; the shaft can be provided with a tee pipe fitting (socket joint type connection) and a saddle type pipe clamp (shaft opening clamp type connection) in a matching way, and the functions of elevation branch pipe drainage, well chamber overflow, pipe network system exhaust and the like are achieved. The inspection well cover is divided into a common well cover, an anti-settling well cover, a sealing well cover, a simple well cover and the like according to different use environments, wherein the sealing well cover is used for an inspection well of an underwater pipe network, the well cover and a well base are connected in a socket-and-spigot manner, and the well base and a shaft are both matched with rubber sealing rings; the anti-settling well cover is used for an inspection well of a buried pipe network and is used in an environment with large road surface load, and a sufficient safety gap is reserved between the anti-settling well cover and the upper end surface of a shaft, so that direct contact is avoided, and the shaft and a well chamber are prevented from being damaged; the simple well cover and the common well cover are used for water installation and installation under the environment with no load or little load on the ground.

The inspection well cover is connected with the upper end of the connecting cylinder and seals the upper end of the connecting cylinder.

The shaft is a nodular iron pipe; the well chamber is made of nodular cast iron. The inspection well made of the ductile cast iron is flexible in production and application. The inspection well chamber is formed by once integral casting through a lost foam process, and the model can be flexibly spliced by using the existing mould made of pipe fittings, so that the secondary development cost of the mould is reduced; in the drainage pipe network construction project, the installation mode can adopt socket joint type and flange plate type connection, the assembly is simple, and the construction is convenient. The nodular cast iron inspection well chamber has good rigidity, high strength, strong bearing capacity and strong foundation settlement resistance; the pipe network main pipeline is connected with a matched bell and spigot sealing rubber ring, so that the sealing performance is good, and water can not leak; the lining is made of high-alumina cement, and the exterior decoration epoxy resin is anticorrosive and has good corrosion resistance; long service life and the like.

In the process of burying underground pipe network pipelines and inspection wells, the underground soil is required to have enough strength, and the excessive settlement of the whole pipeline or local pipelines is avoided.

The nodular cast iron assembled inspection well can effectively solve the problems that the self anti-floating performance of other pipes in a river channel and the construction of the inspection well is poor due to the buoyancy of river water, and the problems that the river water flows backwards and the like are avoided due to good sealing performance; in the construction of a buried pipe network, the series problems of poor bearing capacity, poor foundation settlement resistance, low strength, poor corrosion resistance, leakage of well chambers and pipeline interfaces and the like of inspection wells made of other materials are effectively solved; the nodular cast iron assembly type inspection well has the advantages in pipe gallery pipe network construction, and has the characteristics of simplicity in installation, high construction speed, economy, long service life and the like.

After adopting foretell structure, solved because of the too big production, transportation, the project installation difficult problem that leads to assembled inspection shaft height to bring of trunk line bore, reduced the production degree of difficulty of well room, the transfer in convenient transportation and the project installation, it is simple convenient to assemble, and assembly structure stability is good.

The present invention has been described above with reference to the accompanying drawings, and it is obvious that the present invention is not limited by the above-mentioned manner, and various insubstantial improvements can be made without modification to the method and technical solution of the present invention, or the present invention can be directly applied to other occasions without modification, all within the scope of the present invention.

Claims

1. A fabricated manhole, comprising:

a connecting cylinder buried under a road surface;

2. The fabricated manhole of claim 1 wherein the snap-in ends of the chamber and the well bore are provided with a gasket.

3. The fabricated manhole of claim 2, further comprising a manhole cover coupled to and closing an upper end of the connecting cylinder.

4. The fabricated manhole of claim 3, wherein the wellbore is a ductile iron pipe; the well chamber is made of nodular cast iron.