A CIPP hose and a manufacturing device and method thereof

Abstract

The present application discloses a CIPP hose and a manufacturing device and method thereof. The device includes a dry pipe, a vacuum machine, a filling machine, a conveying device and a rolling device. The dry pipe is located on the conveying device and is transmitted through the conveying device. One or more inner pipes are pre-buried in the dry pipe. The inner pipe ends are perforated and continuous pores are arranged on the pipe wall. The rolling device rolls from the front end to the rear end of the dry pipe. The present invention utilizes the channel formed by the end of the pre-buried pipe and the pores to vacuum the dry pipe, which can avoid air leakage and hose quality problems caused by insufficient repair after multiple holes are opened for air extraction. Reusing the pre-buried pipe for filling can avoid partial air mixing when re-opening holes or using the air extraction holes for filling, which leads to excessive bubbles after the hose is solidified and formed, affecting the quality effect of the pipeline repair. The pre-buried pipe filling and the hose rolling are carried out simultaneously, and the grouting speed can be adjusted to dynamically control the slurry amount, and finally a shaped hose with uniform slurry is formed.

Description

Technical Field

[0001] The present application belongs to the field of drainage pipe preparation, and in particular to a CIPP hose and a manufacturing device and method thereof. Background Art

[0002] Due to the long-term lack of professional maintenance of drainage pipes in my country, most of the pipes have problems such as rupture, disconnection, deformation, and collapse. At present, the drainage industry mainly uses two methods to deal with pipeline problems: excavation repair and trenchless repair. Pipeline excavation repair is very likely to cause traffic congestion, environmental impact, and a long construction period, which limits its scope of application. Pipeline trenchless repair has the characteristics of low impact on the traffic environment and short construction period. It is favored by the drainage industry and is increasingly used in construction. The main repair process is CIPP lining repair technology.

[0003] With the increasing application of CIPP liner repair technology, the demand for CIPP hoses is gradually increasing. However, the production of CIPP hoses has the following shortcomings: 1. In order to control the bubble rate after the hose is cured, the main pipe must first be evacuated, and holes are opened at a certain interval to evacuate the air so that the vacuum degree meets the requirements. However, subsequent sealing and repair are difficult, and the outer membrane of the hose has certain quality risks after repair; 2. After the main pipe is evacuated and enters the filling stage, the re-opening of holes in the filling channel or the use of exhaust holes will cause some air to mix in, resulting in excessive bubbles after the hose is cured and formed, affecting the quality of pipeline repair; 3. After the main pipe is filled, a special rolling platform is used to press and shape the main pipe according to the designed thickness. Since the filling amount is determined based on theoretical calculations or experience, and the filling and pressing are not carried out simultaneously, problems such as insufficient or excess filling amount will occur; Therefore, the industry urgently needs to improve the hose manufacturing process to ensure excellent quality and performance, high production efficiency and cost savings. Summary of the invention

[0004] In order to solve the above technical problems, the present application provides a CIPP hose and a manufacturing device and method thereof.

[0005] In the first aspect, the present application provides a CIPP hose manufacturing device, including a dry pipe, a vacuum machine, a filling machine, a conveying device and a rolling device, wherein the dry pipe is located on the conveying device and is transmitted through the conveying device, an inner pipe is pre-buried in the dry pipe, the end of the inner pipe is opened and continuous pores are arranged on the pipe wall; the rear end of the inner pipe is connected to the vacuum machine when vacuuming, and is connected to the filling machine when filling; the rolling device rolls from the front end of the dry pipe to the rear end of the dry pipe.

[0006] Preferably, multiple layers of glass fiber are arranged in the main pipe.

[0007] Preferably, the pre-buried inner pipeline is made of a plastic pipe or a steel pipe.

[0008] Preferably, the pre-buried inner pipe is circular or square.

[0009] Preferably, one or more inner pipes are pre-buried in the main pipe.

[0010] Preferably, the conveying device comprises a driving roller, a transmission roller and a conveyor belt located on the driving roller and the transmission roller.

[0011] Preferably, the distance between the inner pipe end and the front end of the main pipe is 10-20 cm.

[0012] Preferably, the continuous pores provided in the pre-buried inner pipe wall are round holes, square holes or plum blossom holes.

[0013] In a second aspect, the present application provides a method for preparing a CIPP hose, comprising the following steps:

[0014] Vacuuming stage: After the vacuum machine is connected to the inner pipe, vacuuming begins. The air in the dry pipe is removed by using the exhaust channel formed by the inner pipe end and the continuous pores on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements;

[0015] Filling stage I: After the main pipe is evacuated, the pre-buried inner pipe is connected to the filling machine to start filling. First, part of the slurry will seep out through the pores in the inner pipe wall. This part of the slurry will wrap the inner pipe and form a lubricating layer. Then most of the slurry will fill the front end of the main pipe through the opening at the end of the inner pipe.

[0016] Grouting II and hose rolling and forming stage: After the slurry fills the front end of the main pipe, the rolling equipment is turned on. Under the action of the conveying equipment driving roller, the front end of the main pipe filled with slurry enters the pipe pressing module. The grouting speed is dynamically controlled according to the amount of slurry retained in the main pipe section to be pressed, and the end of the embedded inner pipe is always kept at the inlet end of the pressing module until the inner pipe is pulled out when rolling to the tail of the main pipe, and sealing is carried out simultaneously to finally form a shaped hose.

[0017] In a second aspect, the present application provides a CIPP hose.

[0018] Beneficial effects of the present invention:

[0019] 1. Use the channel formed by the pre-buried pipe ends and pores to evacuate the main pipe, which can avoid air leakage and hose quality problems caused by insufficient repair after multiple holes are opened for air extraction.

[0020] 2. Reusing the pre-buried pipes for filling can avoid the mixing of some air when reopening holes or using the air extraction holes for filling, which will lead to excessive bubbles after the hose is solidified and formed, affecting the quality of the pipeline repair.

[0021] 3. When the pre-buried pipe is filled, the slurry will seep out through the pores of the inner pipe wall. This part of the slurry will wrap the inner pipe and form a lubricating layer, which can make the pre-buried pipe be smoothly drawn out when the filling and rolling are carried out simultaneously, and the end of the pre-buried pipe is always kept at the inlet end of the pressing module;

[0022] 4. The grouting of the pre-buried pipe and the rolling of the hose are carried out simultaneously. The grouting speed can be adjusted to dynamically control the amount of slurry, and the pre-buried pipe can be gradually pulled out to finally form a shaped hose with uniform slurry. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 This is a schematic diagram of the vacuuming stage of an embodiment of the present application;

[0025] Figure 2 for Figure 1 The enlarged structure diagram of part A in the middle;

[0026] Figure 3 This is a schematic diagram of the filling stage I of the embodiment of the present application;

[0027] Figure 4 This is a schematic diagram of the filling II and hose rolling and forming stages of the embodiment of the present application.

[0028] Description of Reference Numerals

[0029] In the figure, 1. inner pipe, 2. glass fiber, 3. rolling equipment, 4. conveyor belt, 5. driving roller, 6. vacuum machine, 7. filling machine, 8. slurry, 9. pores, 10. dry pipe. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present application to clearly and completely describe the technical solutions in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of this application.

[0031] As introduced in the background technology section, CIPP hose production has the following shortcomings: 1. In order to control the bubble rate of the hose after solidification, the dry pipe must first be vacuumed, and holes must be opened at a certain interval to evacuate air so that the vacuum degree meets the requirements. However, subsequent sealing and repair are difficult, and the outer membrane of the hose has certain quality risks after repair; 2. After the dry pipe is vacuumed, it enters the filling stage. Re-opening holes in the filling channel or using exhaust holes will cause some air to mix in, resulting in excessive bubbles after the hose is solidified and formed, affecting the quality of pipeline repair; 3. After the dry pipe is filled, a special rolling platform is used to press and shape the filled dry pipe according to the designed thickness. Since the filling amount is determined based on theoretical calculations or experience, and the filling and pressing are not carried out simultaneously, the filling amount is insufficient or excess. Therefore, the industry urgently needs to improve the hose manufacturing process to ensure excellent quality and performance, high production efficiency and cost savings.

[0032] In the embodiment of the present application, a CIPP hose manufacturing device includes a dry pipe 10, a vacuum machine 6, a filling machine 7, a conveying device and a rolling device. The dry pipe 10 is located on the conveying device and is transmitted through the conveying device. One or more inner pipes 1 are pre-buried in the dry pipe 10. The inner pipe 1 has a hole at the end and continuous pores 9 are set on the pipe wall. The rear end of the inner pipe 9 is connected to the vacuum machine 6 when vacuuming, and is connected to the filling machine 7 when filling. The rolling device 3 rolls from the front end of the dry pipe to the rear end of the dry pipe.

[0033] In the embodiment of the present application, multiple layers of glass fibers 2 are arranged in the main pipe 10 .

[0034] In the embodiment of the present application, the material of the embedded inner pipe 1 is a plastic pipe or a steel pipe. The present application does not specifically limit this. The length and number of the embedded inner pipes 1 are designed according to parameters such as the length and diameter of the CIPP hose.

[0035] In the embodiment of the present application, the pre-buried inner pipe 1 is circular or square, which is not particularly limited in the present application.

[0036] In the embodiment of the present application, the conveying device includes a driving roller 5, a transmission roller, and a conveyor belt 4 located on the driving roller 5 and the transmission roller.

[0037] In the embodiment of the present application, the distance between the end of the inner pipe 1 and the front end of the main pipe 10 is 10-20 cm.

[0038] In the embodiment of the present application, the continuous 9 holes arranged on the wall of the pre-buried inner pipe 1 are round holes, square holes or plum blossom holes. The present application does not specifically limit this. The spacing is designed according to parameters such as the thickness and diameter of the CIPP hose.

[0039] A method for preparing a CIPP hose in an embodiment of the present application comprises the following steps:

[0040] like Figure 1-2 As shown, in the vacuuming stage: one or more inner pipes 1 with a certain strength and smoothness are pre-buried in the dry pipe 10, the end of the inner pipe 1 is opened and continuous pores 9 are set on the pipe wall, and the vacuuming process is started after the vacuum machine 6 is connected to the inner pipe 1. The air in the dry pipe 10 is exhausted by using the exhaust channel formed by the end of the inner pipe 1 and the continuous pores 9 on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements;

[0041] like Figure 3 As shown, filling stage I: after the main pipe 10 is evacuated, the pre-buried inner pipe 1 is connected to the filling machine 7 to start the filling work. First, part of the slurry 8 will seep out through the pores of the inner pipe 1 wall, and this part of the slurry 8 will wrap the inner pipe 1 and form a lubricating layer. Then most of the slurry 8 will fill the front end of the main pipe 10 through the opening at the end of the inner pipe 1;

[0042] like Figure 4 As shown, the grouting II and hose rolling and forming stage: after the slurry 8 fills the front end of the dry pipe, the rolling equipment 3 is turned on, and under the action of the conveying equipment driving roller 5, the front end of the dry pipe 10 filled with the slurry enters the pipe pressing module, and the grouting speed is dynamically controlled according to the amount of slurry 8 retained in the dry pipe 10 section to be pressed, and the end of the embedded inner pipe 1 is always kept at the inlet end of the pressing module until the inner pipe 1 is pulled out when rolling to the tail end of the dry pipe 10, and the sealing treatment is carried out simultaneously to finally form a shaped hose.

[0043] The principle of the present invention is as follows: an inner pipe is pre-buried in the dry pipe, and the dry pipe is vacuumed by the inner pipe. After the vacuum degree reaches the index requirement, the pre-buried inner pipe is used to fill the dry pipe again. When a certain amount of liquid is present at the end of the dry pipe, it is pressed synchronously to finally produce a CIPP hose with reliable quality.

[0044] The preparation method provided in this application is described below through specific examples.

[0045] Example 1

[0046] Example 1 provides a CIPP hose manufacturing device, including a main pipe 10, a vacuum machine 6, a filling machine 7, a conveying device and a rolling device. The main pipe 10 is located on the conveying device and is transmitted through the conveying device. One or more inner pipes 1 are pre-buried in the main pipe 10. The inner pipe 1 has a hole at the end and continuous pores 9 are set on the pipe wall. The rear end of the inner pipe 9 is connected to the vacuum machine 6 when vacuuming, and is connected to the filling machine 7 when filling. The rolling device 3 rolls from the front end of the main pipe to the rear end of the main pipe.

[0047] Multiple layers of glass fiber 2 are arranged in the main pipe 10. The material of the embedded inner pipe 1 is a plastic pipe. The length and number of the embedded inner pipe 1 are designed according to the parameters such as the length and diameter of the CIPP hose. The embedded inner pipe 1 is circular. The conveying device includes a driving roller 5, a transmission roller, and a conveyor belt 4 located on the driving roller 5 and the transmission roller. The distance between the end of the inner pipe 1 and the front end of the main pipe 10 is 10 cm. The continuous 9 holes arranged on the wall of the embedded inner pipe 1 are circular holes. The spacing is designed according to the parameters such as the thickness and diameter of the CIPP hose.

[0048] A method for preparing a CIPP hose in an embodiment of the present application comprises the following steps:

[0049] Vacuuming stage: one or more inner pipes 1 with certain strength and smoothness are pre-buried in the dry pipe 10, the end of the inner pipe 1 is opened and continuous pores 9 are set on the pipe wall, and the vacuum machine 6 is connected to the inner pipe 1 to start the vacuuming process. The air in the dry pipe 10 is exhausted by using the exhaust channel formed by the end of the inner pipe 1 and the continuous pores 9 on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements;

[0050] Filling stage I: After the main pipe 10 is evacuated, the pre-buried inner pipe 1 is connected to the filling machine 7 to start the filling work. First, part of the slurry 8 will seep out through the pores of the inner pipe 1 wall, and this part of the slurry 8 will wrap the inner pipe 1 and form a lubricating layer. Then most of the slurry 8 will fill the front end of the main pipe 10 through the opening at the end of the inner pipe 1;

[0051] Grouting II and hose rolling and forming stage: After the slurry 8 fills the front end of the dry pipe, the rolling equipment 3 is turned on. Under the action of the conveying equipment driving roller 5, the front end of the dry pipe 10 filled with slurry enters the pipe pressing module. The grouting speed is dynamically controlled according to the amount of slurry 8 retained in the dry pipe 10 section to be pressed, and the end of the embedded inner pipe 1 is always kept at the inlet end of the pressing module until the inner pipe 1 is pulled out when rolling to the tail of the dry pipe 10, and sealing treatment is carried out simultaneously to finally form a shaped hose.

[0052] Example 2

[0053] Example 2 provides a CIPP hose manufacturing device, including a main pipe 10, a vacuum machine 6, a filling machine 7, a conveying device and a rolling device. The main pipe 10 is located on the conveying device and is transmitted through the conveying device. One or more inner pipes 1 are pre-buried in the main pipe 10. The inner pipe 1 has a hole at the end and continuous pores 9 are set on the pipe wall. The rear end of the inner pipe 9 is connected to the vacuum machine 6 when vacuuming, and is connected to the filling machine 7 when filling. The rolling device 3 rolls from the front end of the main pipe to the rear end of the main pipe.

[0054] Multiple layers of glass fiber 2 are arranged in the main pipe 10. The material of the embedded inner pipe 1 is steel pipe. The length and number of the embedded inner pipe 1 are designed according to the parameters such as the length and diameter of the CIPP hose. The embedded inner pipe 1 is square. The conveying device includes a driving roller 5, a transmission roller, and a conveyor belt 4 located on the driving roller 5 and the transmission roller. The distance between the end of the inner pipe 1 and the front end of the main pipe 10 is 20 cm. The continuous 9 holes arranged on the wall of the embedded inner pipe 1 are square holes. The spacing is designed according to the parameters such as the thickness and diameter of the CIPP hose.

[0055] A method for preparing a CIPP hose in an embodiment of the present application comprises the following steps:

[0056] Vacuuming stage: one or more inner pipes 1 with certain strength and smoothness are pre-buried in the dry pipe 10, the end of the inner pipe 1 is opened and continuous pores 9 are set on the pipe wall, and the vacuum machine 6 is connected to the inner pipe 1 to start the vacuuming process. The air in the dry pipe 10 is exhausted by using the exhaust channel formed by the end of the inner pipe 1 and the continuous pores 9 on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements;

[0057] Filling stage I: After the main pipe 10 is evacuated, the pre-buried inner pipe 1 is connected to the filling machine 7 to start the filling work. First, part of the slurry 8 will seep out through the pores of the inner pipe 1 wall, and this part of the slurry 8 will wrap the inner pipe 1 and form a lubricating layer. Then most of the slurry 8 will fill the front end of the main pipe 10 through the opening at the end of the inner pipe 1;

[0058] Grouting II and hose rolling and forming stage: After the slurry 8 fills the front end of the dry pipe, the rolling equipment 3 is turned on. Under the action of the conveying equipment driving roller 5, the front end of the dry pipe 10 filled with slurry enters the pipe pressing module. The grouting speed is dynamically controlled according to the amount of slurry 8 retained in the dry pipe 10 section to be pressed, and the end of the embedded inner pipe 1 is always kept at the inlet end of the pressing module until the inner pipe 1 is pulled out when rolling to the tail of the dry pipe 10, and sealing treatment is carried out simultaneously to finally form a shaped hose.

[0059] Example 3

[0060] Example 3 provides a CIPP hose manufacturing device, including a main pipe 10, a vacuum machine 6, a filling machine 7, a conveying device and a rolling device. The main pipe 10 is located on the conveying device and is transmitted through the conveying device. One or more inner pipes 1 are pre-buried in the main pipe 10. The inner pipe 1 has a hole at the end and continuous pores 9 are set on the pipe wall. The rear end of the inner pipe 9 is connected to the vacuum machine 6 when vacuuming, and is connected to the filling machine 7 when filling. The rolling device 3 rolls from the front end of the main pipe to the rear end of the main pipe.

[0061] Multiple layers of glass fiber 2 are arranged in the main pipe 10. The material of the embedded inner pipe 1 is steel pipe. The length and number of the embedded inner pipe 1 are designed according to the parameters such as the length and diameter of the CIPP hose. The embedded inner pipe 1 is circular. The conveying device includes a driving roller 5, a transmission roller, and a conveyor belt 4 located on the driving roller 5 and the transmission roller. The distance between the end of the inner pipe 1 and the front end of the main pipe 10 is 15 cm. The continuous 9 pores arranged on the wall of the embedded inner pipe 1 are plum blossom holes. The spacing is designed according to the parameters such as the thickness and diameter of the CIPP hose.

[0062] A method for preparing a CIPP hose in an embodiment of the present application comprises the following steps:

[0063] Vacuuming stage: one or more inner pipes 1 with certain strength and smoothness are pre-buried in the dry pipe 10, the end of the inner pipe 1 is opened and continuous pores 9 are set on the pipe wall, and the vacuum machine 6 is connected to the inner pipe 1 to start the vacuuming process. The air in the dry pipe 10 is exhausted by using the exhaust channel formed by the end of the inner pipe 1 and the continuous pores 9 on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements;

[0064] Filling stage I: After the main pipe 10 is evacuated, the pre-buried inner pipe 1 is connected to the filling machine 7 to start the filling work. First, part of the slurry 8 will seep out through the pores of the inner pipe 1 wall, and this part of the slurry 8 will wrap the inner pipe 1 and form a lubricating layer. Then most of the slurry 8 will fill the front end of the main pipe 10 through the opening at the end of the inner pipe 1;

[0065] Grouting II and hose rolling and forming stage: After the slurry 8 fills the front end of the dry pipe, the rolling equipment 3 is turned on. Under the action of the conveying equipment driving roller 5, the front end of the dry pipe 10 filled with slurry enters the pipe pressing module. The grouting speed is dynamically controlled according to the amount of slurry 8 retained in the dry pipe 10 section to be pressed, and the end of the embedded inner pipe 1 is always kept at the inlet end of the pressing module until the inner pipe 1 is pulled out when rolling to the tail of the dry pipe 10, and sealing treatment is carried out simultaneously to finally form a shaped hose.

[0066] The present application is described in detail above in conjunction with specific implementation methods and exemplary examples, but these descriptions cannot be understood as limiting the present application. Those skilled in the art understand that, without departing from the spirit and scope of the present application, a variety of equivalent replacements, modifications or improvements can be made to the technical solution of the present application and its implementation methods, all of which fall within the scope of the present application. The scope of protection of the present application shall be subject to the attached claims.

Claims

1. A CIPP hose manufacturing device, characterized in that: The invention comprises a dry pipe, a vacuum machine, a filling machine, a conveying device and a rolling device. The dry pipe is located on the conveying device and is transported by the conveying device. An inner pipe is pre-buried in the dry pipe. The end of the inner pipe is opened and continuous pores are arranged on the pipe wall. The tail end of the inner pipe is connected to the vacuum machine when vacuuming, and is connected to the filling machine when filling. The rolling device rolls from the front end of the dry pipe to the tail end of the dry pipe. The conveying device comprises a driving roller, a transmission roller and a conveyor belt located on the driving roller and the transmission roller. The distance between the end of the inner pipe and the front end of the dry pipe is 10-20 cm. The method for preparing a CIPP hose comprises the following steps: Vacuuming stage: After the vacuum machine is connected to the inner pipe, vacuuming begins. The air in the dry pipe is removed by using the exhaust channel formed by the inner pipe end and the continuous pores on the pipe wall, so that the vacuum degree of the dry pipe meets the index requirements; Filling stage I: After the main pipe is evacuated, the pre-buried inner pipe is connected to the filling machine to start filling. First, part of the slurry will seep out through the pores in the inner pipe wall. This part of the slurry will wrap the inner pipe and form a lubricating layer. Then most of the slurry will fill the front end of the main pipe through the opening at the end of the inner pipe. Grouting II and hose rolling and forming stage: After the slurry fills the front end of the main pipe, the rolling equipment is turned on. Under the action of the conveying equipment driving roller, the front end of the main pipe filled with slurry enters the pipe pressing module. The grouting speed is dynamically controlled according to the amount of slurry retained in the main pipe section to be pressed, and the end of the embedded inner pipe is always kept at the inlet end of the pressing module until the inner pipe is pulled out when rolling to the tail of the main pipe, and sealing is carried out simultaneously to finally form a shaped hose.

2. The device according to claim 1, characterized in that Multiple layers of glass fibers are arranged in the main pipe.

3. The device according to claim 1, characterized in that The pre-buried inner pipeline is made of a plastic pipe or a steel pipe.

4. The device according to claim 1, characterized in that The pre-buried inner pipe is circular or square.

5. The device according to claim 1, characterized in that One or more inner pipes are pre-buried in the main pipe.

6. The device according to claim 1, characterized in that The continuous pores arranged on the pre-buried inner pipe wall are round holes, square holes or plum blossom holes.

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