CN113618331A

CN113618331A - Drainage pipeline repairing process

Info

Publication number: CN113618331A
Application number: CN202110840341.XA
Authority: CN
Inventors: 胡密密; 陈安军; 唐科达; 王爽
Original assignee: Zhejiang Jingmai Environmental Engineering Co ltd
Current assignee: Zhejiang Jingmai Environmental Engineering Co ltd
Priority date: 2021-07-24
Filing date: 2021-07-24
Publication date: 2021-11-09

Abstract

The application relates to a drainage pipeline repairing process, which comprises the steps of cutting off a damaged section of a drainage pipe to enable the drainage pipe to form two connecting ends; taking a first standby pipe with the same specification as the drain pipe; processing a notch on the first standby pipe, wherein the notch penetrates through two ends of the first standby pipe; closing the gap of the first spare pipe to reduce the outer diameter of the first spare pipe and form an inserting pipe; coaxially embedding the insertion pipe into the connecting end, wherein one end of the insertion pipe extends out of the connecting end; taking a second spare pipe with the same specification as the drain pipe; coaxially sleeving a second standby pipe to the periphery of one end, extending out of the connecting end, of the splicing pipe; and taking the connecting pipe, sleeving one end of the connecting pipe to the periphery of the second standby pipe, and sleeving the other end of the connecting pipe to the periphery of the other connecting end. The water drainage pipe is extended by utilizing the inserting pipe and the second standby pipe, so that the water drainage pipe extends out of the floor slab and extends out for enough length for the installation of the connecting pipe; the repair of the drainage pipeline can be completed without digging a floor slab.

Description

Drainage pipeline repairing process

Technical Field

The application relates to the field of drainage pipeline maintenance, in particular to a drainage pipeline repairing process.

Background

The water supply and drainage system is an essential important component of any building and comprises a domestic water supply system, a domestic drainage system and a fire fighting system.

The domestic drainage system mainly comprises a drainage pipeline, and the drainage pipeline is formed by splicing a plurality of drainage pipes. Meanwhile, the normal work of the drainage pipeline is a necessary condition for ensuring the normal operation of the domestic drainage system. In life, the drain pipe can crack, break and the like, and the damaged drain pipe needs to be repaired.

Referring to fig. 1, when a crack occurs at a1 or a2 of a drain pipe disposed between upper and lower floors and the crack is repaired, a1 or a2 of the drain pipe is cut along a cutting line in fig. 1 to completely cut off a section with the crack and form two connection ends of the drain pipe.

Subsequently, referring to fig. 2, the connection pipe is mounted to the connection end, and the end of the connection pipe is fitted over the outer circumference of the connection end; meanwhile, the connecting pipe can adopt a straight pipe or a three-way pipe (one end of which is plugged).

However, with reference to figure 1, the drain pipe is cracked at A3 or a4 (near the floor), and after the cracked section is cut away, the length of one connection end extending out of the floor is limited, even if the connection end is flush with the floor surface. At this time, before the connection pipe is installed, the floor slab needs to be dug, which causes inconvenience.

Disclosure of Invention

In order to facilitate the repair of the drainage pipeline, the application provides a drainage pipeline repair process.

The application provides a drainage pipeline repair process, adopts following technical scheme:

a drainage pipeline repairing process comprises the following steps:

cutting off the damaged section of the drain pipe, so that the drain pipe forms two connecting ends;

taking a first standby pipe with the same specification as the drain pipe;

processing a notch on the first standby pipe, wherein the notch penetrates through two ends of the first standby pipe;

closing the gap of the first standby pipe to reduce the outer diameter of the first standby pipe and form an inserting pipe;

coaxially embedding the insertion tube into one connecting end, wherein one end of the insertion tube extends out of the connecting end;

taking a second spare pipe with the same specification as the drain pipe;

coaxially sleeving a second standby pipe to the periphery of one end, extending out of the connecting end, of the splicing pipe;

and taking the connecting pipe, sleeving one end of the connecting pipe to the periphery of the second standby pipe, and sleeving the other end of the connecting pipe to the periphery of the other connecting end.

By adopting the technical scheme, when the connecting end is flush with the surface of the floor slab, the water discharging pipe is extended by utilizing the inserting pipe and the second standby pipe, so that the water discharging pipe extends out of the floor slab and extends out for enough length for the installation of the connecting pipe; the repair of the drainage pipeline can be completed without digging a floor slab.

Preferably, the step of machining a notch in the first spare pipe comprises:

and machining a notch on the first spare pipe by using a standard cutter, wherein the vertical distance between two side walls of the notch is equal everywhere and is equal to a standard value.

By adopting the technical scheme, the drain pipe is commonly used for discharging sewage which is often mixed with small particle impurities such as dust and the like;

when the gap of the first standby pipe is closed, the two side walls of the gap can be attached to each other, so that the closed gap is reduced as much as possible, the inner wall of the repaired drain pipe is kept flat, and the sewage can be discharged conveniently.

Preferably, the step of machining a notch in the first spare pipe using a standard tool comprises:

the notch is spiral, the spiral angle is determined according to the wall thickness of the drain pipe, and the range of the spiral angle is [0, 90 ° ]; and the thicker the wall thickness of the drain pipe, the smaller the helix angle.

By adopting the technical scheme, the outer diameter of the connecting pipe is not more than the inner diameter of the drain pipe; the width of the gap along the circumferential direction of the first spare pipe should be larger than the difference between the circumferences of the inner and outer circumferences of the drain pipe;

namely L/cos beta is more than or equal to (D-D) pi; wherein D is the external diameter of the drain pipe, D is the internal diameter of the drain pipe, pi is the circumferential ratio, beta is the helical angle, and L is the standard value (the vertical distance between two side walls of the notch).

Preferably, the standard cutter comprises a shaft body and a plurality of cutting parts, and the plurality of cutting parts are arranged along the circumferential direction of the shaft body;

and in the step of processing a notch on the first spare pipe by using a standard cutter, the method further comprises the following steps: the axis of the shaft body intersects with and is perpendicular to the axis of the first standby pipe.

By adopting the technical scheme, the vertical distance between the two side walls of the machined notch is equal and equal to the standard value.

Preferably, the step of closing the notch of the first spare pipe to reduce the outer diameter of the first spare pipe and form the insertion pipe further comprises:

and processing a chamfer on the inner periphery of the insertion pipe.

Through adopting above-mentioned technical scheme, it is intraductal to be convenient for sewage along chamfer inflow grafting, reduces piling up of tiny particle debris such as dust.

Preferably, the step of coaxially embedding the insertion tube into one of the connection ends and before one end of the insertion tube extends out of the connection end further comprises:

and coating adhesive on the outer periphery of the insertion pipe or the inner periphery of the connecting end.

Preferably, before the step establishes the coaxial cover of second spare pipe to the one end periphery that the joint end is stretched out to the grafting pipe, still includes:

and coating an adhesive on the outer periphery of the splicing pipe or the inner periphery of the second standby pipe.

Preferably, the step is established the coaxial cover of second spare pipe to the one end periphery that the joint end was stretched out to the grafting pipe in, includes: and the end of the second standby pipe is brought into contact with the end of the connection end.

and smearing adhesive between the connecting end and the second standby pipe.

By adopting the technical scheme, the fixing and the sealing are realized by using the adhesive.

In summary, the present application includes at least one of the following beneficial technical effects:

1. when the connecting end is flush with the surface of the floor slab, the water drainage pipe is extended by using the splicing pipe and the second standby pipe, so that the water drainage pipe extends out of the floor slab and extends out for a sufficient length for the installation of the connecting pipe; the repair of the drainage pipeline can be completed without digging a floor slab;

2. and processing a spiral notch on the first standby pipe by using a standard cutter so as to repair the drainage pipes with different wall thicknesses.

Drawings

FIG. 1 is a schematic view of a drain pipe structure.

FIG. 2 is a schematic view of the repaired drainpipe.

FIG. 3 is a schematic view of the drain pipeline in the repair process.

Fig. 4 is a structural diagram of the first spare pipe with the helix angle β of the indentation being 0.

FIG. 5 is a schematic view of a first spare tube with a notch having a helix angle β different from 0.

Description of reference numerals: 1. a drain pipe; 11. a connecting end; 2. a connecting pipe; 3. a first backup tube; 31. a notch; 4. a standard cutter; 41. a shaft body 42 and a cutting part; 5. inserting a pipe; 51. chamfering; 6. a second standby pipe.

Detailed Description

The present application is described in further detail below with reference to figures 1-5.

Referring to fig. 1, the drainage pipeline is formed by splicing a plurality of drainage pipes 1

When the water discharge pipe 1 arranged between the upper floor and the lower floor cracks at the position A3 or the position A4 (close to the floor), the water discharge pipe 1 needs to be repaired.

The embodiment of the application discloses drainage pipe repair technology, when the cracking position of the drainage pipe 1 is close to a floor slab, the drainage pipe 1 is repaired fast.

The drainage pipeline repairing process comprises the following steps:

s10, the damaged section of the drain pipe 1 is cut away so that the drain pipe 1 forms two connection ends 11.

Referring to fig. 1 and 3, at this time, the cracked part (a 4) of the water discharge pipe 1 is close to the floor, so that the end face of the connection end 11 is flush with the floor surface.

S20, a first spare pipe 3 with the same specification as the drain pipe 1 is taken.

Specifically, the material, the outer diameter and the inner diameter of the first spare pipe 3 are the same as those of the drain pipe 1.

S30, a notch 31 is formed in the first spare pipe 3, and the notch 31 penetrates both ends of the first spare pipe 3.

Specifically, referring to fig. 4, a notch 31 is machined in the first spare pipe 3 using a standard cutter 4 such that the vertical distance between the two side walls of the notch 31 is equal everywhere and equal to a standard value L.

The standard cutter 4 includes a shaft 41 and a plurality of cutting portions 42, and the plurality of cutting portions 42 are disposed along the circumferential direction of the shaft 41. Meanwhile, the standard cutter 4 may be mounted to a hand drill to drive the standard cutter 4 to rotate. When the master cutter 4 rotates, the cutting portion 42 rotates around the axis of the shaft body 41 to form a locus circle having a diameter equal to the standard value L.

Meanwhile, when the notch 31 is machined by the standard cutter 4, the axis of the shaft body 41 is perpendicular to and in the same plane as the axis of the first spare pipe 3.

Referring to fig. 4 and 5, the gap 31 is helical and defines a helix angle β in accordance with the wall thickness of the drain pipe 1, the helix angle β being in the range of [0, 90 °).

Specifically, L/cos beta is more than or equal to (D-D) pi; in the formula, D is the outer diameter of the drain pipe 1, D is the inner diameter of the drain pipe 1, pi is the circumferential ratio, β is the helical angle, and L is the standard value. Further, the width of the notch 31 in the circumferential direction of the first reserve pipe 3 is not smaller than the difference in the circumferential length of the inner and outer peripheries of the drain pipe 1. Preferably, the width of the notch 31 in the circumferential direction of the first spare pipe 3 is equal to the difference in the circumferential length of the inner and outer peripheries of the drain pipe 1, i.e., L/cos β = (D-D) pi.

S40, referring to fig. 3 and 4, the notch 31 of the first spare pipe 3 is closed to reduce the outer diameter of the first spare pipe 3 and form the splicing pipe 5.

S50, a chamfer 51 is formed on the inner periphery of the bayonet tube 5.

And S60, coating adhesive on the outer periphery of the plug pipe 5 or the inner periphery of the connecting end 11 embedded in the floor slab. Preferably, an adhesive is applied to the outer circumference of the bayonet tube 5.

And S70, coaxially embedding the plug pipe 5 into the connecting end 11 embedded in the floor slab, and extending one end of the plug pipe 5 out of the connecting end 11.

It should be noted that the end of the insertion tube 5 with the chamfer 51 is upward.

S80, a second spare pipe 6 with the same specification as the drainage pipe 1 is taken.

S90, coating adhesive on the outer circumference of the splicing pipe 5 or the inner circumference of the second spare pipe 6. Preferably, an adhesive is applied to the outer circumference of the bayonet tube 5.

And S100, coating adhesive on the end part of the connecting end 11 embedded in the floor slab or the end part of the second spare pipe 6.

S110, coaxially sleeving the second standby pipe 6 to the periphery of one end, extending out of the connecting end 11, of the splicing pipe 5; and the end of the second reserve pipe 6 is attached to the end of the connection end 11 embedded in the floor.

If the adhesive is applied to the end of the second spare pipe 6 in S100, the end of the second spare pipe 6 to which the adhesive is applied faces the connection end 11 embedded in the floor in S110.

And S120, taking the connecting pipe 2, sleeving one end of the connecting pipe 2 to the periphery of the second spare pipe 6, and sleeving the other end of the connecting pipe 2 to the periphery of the other connecting end 11.

The implementation principle of the drainage pipeline repairing process in the embodiment of the application is as follows: when the cracking position of the drain pipe 1 is close to a floor slab, cutting off the damaged section of the drain pipe 1 to enable the drain pipe 1 to form two connecting ends 11, and when one connecting end 11 is flush with the surface of the floor slab, extending the drain pipe 1 by using the splicing pipe 5 and the second standby pipe 6 to enable the drain pipe 1 to extend out of the floor slab and extend out for enough length for installing the connecting pipe 2; the repair of the drainage pipeline can be completed without digging a floor slab.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The drainage pipeline repairing process is characterized by comprising the following steps:

cutting off the damaged section of the drain pipe (1) so that the drain pipe (1) forms two connecting ends (11);

taking a first standby pipe (3) with the same specification as the drain pipe (1);

processing a notch (31) on the first spare pipe (3), wherein the notch (31) penetrates through two ends of the first spare pipe (3);

closing the gap (31) of the first spare pipe (3) to reduce the outer diameter of the first spare pipe (3) and form an inserting pipe (5);

the plug pipe (5) is coaxially embedded into a connecting end (11), and one end of the plug pipe (5) extends out of the connecting end (11);

taking a second spare pipe (6) with the same specification as the drain pipe (1);

the second standby pipe (6) is coaxially sleeved to the periphery of one end, extending out of the connecting end (11), of the inserting pipe (5);

taking the connecting pipe (2), sleeving one end of the connecting pipe (2) to the periphery of the second standby pipe (6), and sleeving the other end of the connecting pipe (2) to the periphery of the other connecting end (11).

2. A drain pipe repair process according to claim 1, wherein the step of machining a notch (31) in said first spare pipe (3) comprises:

machining a notch (31) in the first spare pipe (3) by using a standard cutter (4), and enabling the vertical distance between two side walls of the notch (31) to be equal everywhere and equal to a standard value.

3. A drain pipe repair process according to claim 2, wherein the step of machining a notch (31) in said first spare pipe (3) with a standard tool (4) comprises:

the notch (31) is spiral, and a spiral angle is determined according to the wall thickness of the drain pipe (1), and the range of the spiral angle is [0, 90 ° ]; and the thicker the wall thickness of the drain pipe (1), the smaller the helix angle.

4. The drainpipe repair process as claimed in claim 2, wherein: the standard cutter (4) comprises a shaft body (41) and a plurality of cutting parts (42), and the plurality of cutting parts (42) are arranged along the circumferential direction of the shaft body (41);

and in the step of machining a notch (31) on the first spare pipe (3) by using a standard cutter (4), the method further comprises the following steps: the axis of the shaft body (41) is intersected with and perpendicular to the axis of the first standby pipe (3).

5. The drain pipe repair process according to claim 1, wherein the step of closing the gap (31) of the first spare pipe (3) to reduce the outer diameter of the first spare pipe (3) and forming the plug pipe (5) further comprises:

a chamfer (51) is formed on the inner periphery of the plug pipe (5).

6. The drain pipe repair process according to claim 1, wherein the step of coaxially inserting the plug pipe (5) into a connection end (11) and before one end of the plug pipe (5) extends out of the connection end (11), further comprises:

and adhesive is coated on the outer periphery of the insertion pipe (5) or the inner periphery of the connecting end (11).

7. The repairing process for a drainage pipeline according to claim 1, wherein the step of coaxially sleeving the second spare pipe (6) to the periphery of the end of the inserting pipe (5) extending out of the connecting end (11) further comprises:

and coating an adhesive on the outer periphery of the inserting pipe (5) or the inner periphery of the second spare pipe (6).

8. The repairing process for a drainage pipeline according to claim 1, wherein the step of coaxially sleeving the second spare pipe (6) into the periphery of the end of the inserting pipe (5) extending out of the connecting end (11) comprises: and the end of the second standby pipe (6) touches the end of the connection end (11).

9. The repairing process for a drainage pipeline according to claim 8, wherein the step of coaxially sleeving the second spare pipe (6) to the periphery of the end of the inserting pipe (5) extending out of the connecting end (11) further comprises:

and adhesive is coated between the connecting end (11) and the second standby pipe (6).