A retractable piercing head for ultraviolet curing and its use method

Abstract

The present invention relates to the field of pipeline construction technology, and more particularly to a retractable tying head for ultraviolet light curing and its use method. The tying head comprises an inflation tube and an elastic joint; one end of the inflation tube is connected to an inflation device for inflating the ultraviolet light curing hose, and the other end is detachably connected to one end of the elastic joint; the other end of the elastic joint is nested in the ultraviolet light curing hose, and a sealed cavity is provided within the elastic joint for increasing the volume of the elastic joint. The retractable tying head forms a tight fit with the inner wall of the ultraviolet light curing hose through inflation, which not only prevents air leakage during the curing process but also has a simple structure and is easy to use.

Description

Technical Field

[0001] The present invention relates to the technical field of construction management, and in particular to a retractable piercing head for ultraviolet curing and a use method thereof. Background Art

[0002] UV curing is a technology that involves weaving a certain thickness of glass fiber impregnated with light-curing resin into a hose, pulling it into the old pipe to be repaired, then inflating it to expand it tightly against the original pipe and using ultraviolet light to heat and cure it to form a strong "tube-in-tube" structure, that is, a fiberglass pipe, thereby repairing the defects of the original pipe.

[0003] Currently, UV curing generally uses tie heads and tie wraps to seal hoses for subsequent pressurization. To facilitate construction, UV curing vehicles must carry tie heads of various diameters, each tailored to the diameter of the pipe being repaired. This is inconvenient and poses a safety hazard during handling. The tie head diameter is generally slightly smaller than the hose diameter, resulting in a gap between the tie head and the hose. Even with two tie wraps, air leakage can still occur, and in severe cases, the entire hose section can be rendered useless.

[0004] The above content is only used to assist in understanding the technical solution of the present invention and does not mean that the above content is the closest prior art. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a retractable piercing head for UV curing and a method of using the same. The retractable piercing head forms a tight fit with the inner wall of the UV curing hose through inflation, which not only prevents air leakage of the UV curing hose during the curing process, but also has a simple structure and is easy to use.

[0006] To achieve the above-mentioned purpose, the technical solution of the present invention is implemented as follows: a retractable piercing head for UV curing, comprising an inflation tube and an elastic joint; one end of the inflation tube is connected to an inflation device for inflating the UV curing hose, and the other end is detachably connected to one end of the elastic joint; the other end of the elastic joint is nested in the UV curing hose, and a closed cavity is provided inside the elastic joint for increasing the volume of the elastic joint.

[0007] Preferably, the elastic joint includes an airbag tube; one end of the airbag tube is connected to the inflation tube, and the other end is nested in the UV-curing hose; a hollow cavity is provided inside the tube wall of the airbag tube, and an inflation nozzle is provided on the airbag tube; the inflation nozzle connects the hollow cavity and the inflation pump.

[0008] Preferably, the elastic joint further comprises an annular sealing ring; the annular sealing ring is arranged at the connection between the airbag tube and the UV-curing hose, and the annular sealing ring is sleeved on the outer wall of the airbag tube.

[0009] Preferably, the elastic joint also includes an annular double-sided tape; the annular double-sided tape is arranged at the connection between the airbag tube and the UV-curing hose, and one side of the annular double-sided tape is tightly fitted with the outer wall of the airbag tube along the circumferential direction of the airbag tube, and the other side of the annular double-sided tape is fitted and connected with the inner wall of the UV-curing hose.

[0010] Preferably, a tearable film is provided on the surface of the annular double-sided tape connected to the inner wall of the UV-curable hose.

[0011] Preferably, it also includes a UV-curing hose ring and an external binding belt; the UV-curing hose ring is made of the same material as the UV-curing hose, and is sleeved on the outer wall of the airbag tube, and is located between the annular double-sided tape and the annular sealing ring; the external binding belt is arranged on the outer wall of the UV-curing hose, and binds the UV-curing hose at the UV-curing hose ring after curing.

[0012] Preferably, it also includes a sealing nut; the airbag tube is set to a bottle-shaped hollow cylinder, one end of the bottle-shaped hollow cylinder is threadedly connected to the air outlet end of the inflation tube, and a sealing tape is wrapped around the connection; the sealing nut is tightened and fixed on the sealing tape.

[0013] Preferably, the end of the inflation tube is provided with a through hole for the ultraviolet lamp stand cord to pass through; the through hole is sealed with a rubber cover; the rubber cover is provided with an elastic hole with a retractable aperture.

[0014] Preferably, it further comprises a pressure sensor and a controller; the pressure sensor is arranged on the annular sealing ring and is electrically connected to the controller; the controller is electrically connected to the air pump.

[0015] Preferably, the steps for using the retractable tying head are as follows:

[0016] S1. The operator places the UV curing hose into the pipe to be repaired and selects an air bag tube with the same outer diameter as the inner diameter of the UV curing hose based on the inner diameter of the UV curing hose;

[0017] S2. The operator connects one end of the airbag tube to the inflation tube thread, wraps sealing tape around the connection, and tightens the sealing nut onto the sealing tape.

[0018] S3. Place the UV lamp holder into the UV curing hose, and pass the cord for pulling the UV lamp holder through the elastic hole on the rubber cover;

[0019] S4. Insert the other end of the airbag tube into the UV-curable hose and simultaneously start the air pump to inflate the airbag nozzle on the airbag tube. After the hollow chamber in the airbag tube wall is filled with gas, the outer wall of the airbag tube expands and fits tightly against the inner wall of the UV-curable hose.

[0020] S5. While the inflation pump is inflating the inflation nozzle on the airbag tube, the operator removes the tearable film on the annular double-sided tape; the airbag tube is connected to the UV-curable hose via the annular double-sided tape;

[0021] S5. Connect the inflation port at the end of the inflation tube to the inflation device to inflate the interior of the UV-curable hose, and simultaneously perform a UV-curing process on the UV-curable hose and the UV-curable hose ring;

[0022] S6. After the UV-curable hose ring is cured, tie the UV-curable hose ring with an outer binding tape from the outside;

[0023] S7. During the curing process of the UV-curable hose, the pressure sensor detects the pressure value at the annular sealing ring. When the pressure value decreases, the controller controls the inflation pump to inflate the airbag tube.

[0024] The beneficial effects of the present invention are embodied in:

[0025] (1) The present invention is provided with an inflation tube and an elastic joint, and one end of the inflation tube and the elastic joint is detachably connected. At the same time, the other end of the elastic joint is nested in the UV-curing hose, and a closed cavity for increasing the volume of the elastic joint is provided inside the elastic joint. Through such a setting, the elastic joint expands by inflation or filling with liquid, and after the volume increases, it automatically forms a tight fit with the inner wall of the UV-curing hose, achieving a sealing effect. This not only solves the problem of air leakage caused by the gap between the traditional tying head and the hose, but also has a simple structure and is easy to use.

[0026] (2) The present invention provides an annular sealing ring; the annular sealing ring is arranged at the connection between the airbag tube and the UV-curing hose, and the annular sealing ring is sleeved on the outer wall of the airbag tube. With this arrangement, when the airbag tube is inflated with gas, the annular sealing ring is squeezed, and the annular sealing ring transmits the squeezing force to the inner wall of the UV-curing hose, increasing the pressure at the location of the annular sealing ring, thereby improving the sealing effect between the airbag tube and the UV-curing hose.

[0027] (3) The present invention provides an annular double-sided tape on the airbag tube; one side of the annular double-sided tape is tightly attached to the outer wall of the airbag tube along the circumference of the airbag tube, and the other side of the annular double-sided tape is butted against the inner wall of the UV-curable hose. This arrangement allows the airbag tube and the UV-curable hose to be tightly attached to each other, thereby increasing the friction between the airbag tube and the UV-curable hose, preventing relative sliding between them, and thus improving the sealing effect of the airbag tube on the UV-curable hose.

[0028] (4) The present invention sets a UV-curing hose ring made of the same material as the UV-curing hose, and sets the UV-curing hose ring on the outer wall of the airbag tube, and the UV-curing hose ring is located between the annular double-sided tape and the annular sealing ring. This allows the operator to cure the UV-curing hose and the UV-curing hose ring by ultraviolet heating, because the UV-curing hose ring is small in size, it will be cured first, forming an annular support inside the UV-curing hose. This not only makes it convenient for the operator to tie the UV-curing hose along the location of the UV-curing hose ring with the outer binding tape, thereby sealing the entire UV-curing hose in both directions inside and outside, achieving a tight fit between the UV-curing hose and the elastic joint, improving the sealing effect, and even making the cured UV-curing hose ring and the UV-curing hose form a whole, which can completely solve the problem of internal gas leakage of the UV-curing hose during the curing process. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 It is a structural schematic diagram of the present invention;

[0030] Figure 2 It is a left side view of the present invention;

[0031] Figure 3 It is a right side view of the present invention.

[0032] Description of reference numerals:

[0033] 10. Inflatable tube; 11. Inflatable port; 12. Rubber cover; 121. Rope hole; 20. Sealing nut;

[0034] 30. Inflating nozzle; 40. Airbag tube; 41. Ring seal; 42. UV curing hose ring;

[0035] 43. Ring-shaped double-sided tape. DETAILED DESCRIPTION

[0036] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. In the absence of conflict, the embodiments in this application and the features in the embodiments can be combined with each other. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0037] Example 1

[0038] See also Figure 1 As shown:

[0039] The present invention provides a retractable piercing head for ultraviolet curing, comprising an inflation tube 10 and an elastic joint.

[0040] The end of the inflation tube 10 is provided with an inflation port 11, which interfaces with the inflation device used to inflate the UV-curing hose. The end of the inflation tube 10 with the inflation port 11 also has a through-hole, which provides a passage for the cord of the UV lamp holder used to cure the UV-curing hose. To ensure sealing, a rubber cover 12 is installed over the through-hole; this cover has an elastic hole 121 with a diameter that can be passively expanded or contracted.

[0041] When the cord of the UV lamp holder passes through the elastic hole 121 , the elastic hole 121 can fit tightly with the surface of the cord of the UV lamp holder, thereby preventing air in the UV curing hose from flowing out.

[0042] The other end of the inflation tube 10 is butted against one end of the elastic joint; the other end of the elastic joint is nested in the UV curing hose.

[0043] In actual use, the UV curing hose is placed in the pipe to be repaired, and the inflation device is turned on to blow gas from the inflation tube 10 into the UV curing hose, so that the pipe is filled with gas, which facilitates the UV curing process.

[0044] A closed cavity is provided inside the elastic joint for increasing the volume of the elastic joint. After the closed cavity is filled with gas or liquid, the volume of the elastic joint originally nested in the UV-curing hose becomes larger, thereby making the connection between the elastic joint and the UV-curing hose tighter and achieving automatic sealing between the two.

[0045] The elastic joint is formed by the airbag tube 40 , the annular sealing ring 41 , the UV-curable hose ring 42 , the outer binding belt, and the annular double-sided adhesive tape 43 .

[0046] The airbag tube 40 is a bottle-shaped hollow cylinder, one end of which is threadedly connected to the outlet end of the inflation tube 10. Sealing tape is applied to the connection. A sealing nut 20 is fitted over the sealing tape. Rotating the sealing nut 20 creates an airtight connection between the airbag tube 40 and the inflation tube 10.

[0047] In actual use, the operator can replace the corresponding model of the airbag tube 40 according to the UV curing hose of different diameters. The end size of all models of airbag tubes 40 connected to the inflation tube 10 is the same, which is convenient for the operator to replace.

[0048] The central portion of the balloon tube 40 is provided with a passage for inflating the UV-curing hose with gas. A hollow cavity is defined within the tube wall of the balloon tube 40, and an inflation nozzle 31 is provided on the balloon tube 40, connecting the hollow cavity to the inflation pump. Because the balloon tube 40 is made of an elastic material, when the balloon tube 40 is nested within the UV-curing hose and the hollow cavity in the tube wall of the balloon tube 40 is inflated with gas by the inflation pump, the balloon tube 40 expands in volume, thereby tightening the connection between the balloon tube 40 and the UV-curing hose, achieving a preliminary seal on the UV-curing hose and preventing leakage of gas injected into the UV-curing hose along the inflation tube 10.

[0049] The airbag tube 40 also includes a pressure sensor and a controller. The pressure sensor is located on an annular seal ring 41 and is electrically connected to the controller. The controller is electrically connected to the inflation pump. The annular seal ring 41 is located at the junction of the airbag tube 40 and the UV-curable hose and is sleeved onto the outer wall of the airbag tube 40.

[0050] In actual use, when gas is filled into the interior of the airbag tube 40, the volume of the airbag tube 40 increases, thereby squeezing the annular sealing ring 41. According to the interaction of forces, the annular sealing ring 41 also squeezes the inner wall of the UV-curing hose, thereby making the sealing effect between the airbag tube 40 and the UV-curing hose better, thereby achieving further sealing of the UV-curing hose.

[0051] The pressure sensor can detect the squeezing force between the annular sealing ring 41 in real time. When the squeezing force becomes smaller, the controller can control the inflation pump to continue to fill the interior of the airbag tube 40 with gas, so that it continues to expand and provide sufficient squeezing force so that the sealing effect of the annular sealing ring 41 is not affected.

[0052] An annular double-sided tape 43 is positioned at the junction of the airbag tube 40 and the UV-curable hose. One side of the tape 43 is tightly attached to the outer wall of the airbag tube 40 along its circumference, while the other side of the tape 43 abuts against the inner wall of the UV-curable hose. A tearable film is provided on the abutting surface of the tape 43 and the inner wall of the UV-curable hose.

[0053] In actual use, when the airbag tube 40 is inflated with gas and is about to fit tightly with the UV-curing hose, the operator removes the tearable film on the annular double-sided tape 43, so that the airbag tube 40 and the UV-curing hose can still stick together after they fit tightly together, increasing the relative friction between the airbag tube 40 and the UV-curing hose, avoiding relative sliding between the airbag tube 40 and the UV-curing hose, and further improving the sealing effect between the airbag tube 40 and the UV-curing hose.

[0054] The UV curing hose ring 42 is made of the same material as the UV curing hose and is cut from a UV curing hose of the same diameter. The UV curing hose ring 42 is sleeved on the outer wall of the airbag tube 40 and is located between the annular double-sided tape 43 and the annular sealing ring 41 .

[0055] In actual use, once the airbag tube 40 and the UV-curing hose are sealed, the UV-curing hose and the UV-curing hose ring 42 are cured by ultraviolet heat. Due to its smaller size, the UV-curing hose ring 42 cures first, forming a ring-shaped support inside the UV-curing hose. The operator then ties the UV-curing hose along the UV-curing hose ring 42 with an outer binding tape, which not only connects the two and provides a tight fit, but also allows the cured UV-curing hose ring 42 to form a single unit, completely eliminating the problem of internal gas leakage during the UV-curing hose curing process.

[0056] The UV lamp rack mentioned in the present invention is generally a lamp rack formed by assembling UV lamps currently available on the market.

[0057] Example 2

[0058] The steps for using the retractable tie head are as follows:

[0059] S1. The operator places the UV curing hose into the pipe to be repaired and selects an air bag tube 40 with an outer diameter that is the same as the inner diameter of the UV curing hose according to the inner diameter of the UV curing hose.

[0060] S2. The operator connects one end of the airbag tube 40 to the inflation tube 10 through threads, wraps a sealing tape around the connection, and tightens the sealing nut 20 onto the sealing tape.

[0061] S3. Place the UV lamp holder into the UV curing hose, and pass the string for pulling the UV lamp holder through the elastic hole 121 on the rubber cover 12.

[0062] S4. Insert the other end of the airbag tube 40 into the UV-curing hose, and start the inflation pump to inflate the inflation nozzle 31 on the airbag tube 40. After the hollow cavity in the wall of the airbag tube 40 is filled with gas, the outer wall of the airbag tube 40 expands and fits tightly with the inner wall of the UV-curing hose.

[0063] S5. While the inflation pump is inflating the inflation nozzle 31 on the airbag tube 40, the operator removes the tearable film on the annular double-sided tape 43; the airbag tube 40 is connected to the UV-curable hose via the annular double-sided tape 43.

[0064] S5. Connect the inflation port 11 at the end of the inflation tube 10 to the inflation device to inflate the interior of the UV curing hose, and perform UV curing on the UV curing hose and the UV curing hose ring 42 at the same time.

[0065] S6. After the UV-curable hose ring 42 is cured, an outer binding tape is tied around the UV-curable hose ring 42 from outside the UV-curable hose.

[0066] S7, during the curing process of the UV-curable hose, the pressure sensor detects the pressure value at the annular sealing ring 41, and when the pressure value decreases, the controller controls the inflation pump to inflate the airbag tube 40.

[0067] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A retractable piercing head for UV curing, characterized in that: It comprises an inflation tube (10) and an elastic joint; one end of the inflation tube (10) is connected to an inflation device for inflating a UV-curing hose, and the other end is detachably connected to one end of the elastic joint; the other end of the elastic joint is embedded in the UV-curing hose, and a closed cavity is provided inside the elastic joint for increasing the volume of the elastic joint; The elastic joint comprises an airbag tube (40); one end of the airbag tube (40) is connected to the inflation tube (10), and the other end is nested in the UV curing hose; a hollow cavity is provided inside the tube wall of the airbag tube (40), and an inflation nozzle (31) is provided on the airbag tube (40); the inflation nozzle (31) is connected to the hollow cavity and the inflation pump; The elastic joint further includes an annular double-sided tape (43); the annular double-sided tape (43) is arranged at the connection between the airbag tube (40) and the ultraviolet curing hose, and one side of the annular double-sided tape (43) is tightly fitted to the outer wall of the airbag tube (40) along the circumferential direction of the airbag tube (40), and the other side of the annular double-sided tape (43) is fitted and connected to the inner wall of the ultraviolet curing hose; A tearable film is provided on the surface of the annular double-sided tape (43) connected to the inner wall of the UV curing hose; It also includes a UV-curing hose ring (42) and an external binding belt; the UV-curing hose ring (42) is made of the same material as the UV-curing hose, and is sleeved on the outer wall of the airbag tube (40), and is located between the annular double-sided tape (43) and the annular sealing ring (41); the external binding belt is arranged on the outer wall of the UV-curing hose, and binds the UV-curing hose at the UV-curing hose ring (42) after curing.

2. The retractable piercing head for UV curing according to claim 1, characterized in that: The elastic joint further comprises an annular sealing ring (41); the annular sealing ring (41) is arranged at the connection between the airbag tube (40) and the ultraviolet curing hose, and the annular sealing ring (41) is sleeved on the outer wall of the airbag tube (40).

3. A retractable piercing head for UV curing according to claim 1 or 2, characterized in that: It also includes a sealing nut (20); the airbag tube (40) is configured as a bottle-shaped hollow cylinder, one end of the bottle-shaped hollow cylinder is threadedly connected to the outlet end of the inflation tube (10), and a sealing tape is wrapped around the connection; the sealing nut (20) is screwed and fixed on the sealing tape.

4. The retractable piercing head for UV curing according to claim 3, characterized in that: The end of the inflation tube (10) is provided with a through hole for the ultraviolet lamp stand cord to pass through; a rubber cover (12) is provided on the through hole for sealing; and an elastic hole (121) with a retractable aperture is provided on the rubber cover (12).

5. The retractable piercing head for UV curing according to claim 2, characterized in that: It also includes a pressure sensor and a controller; the pressure sensor is arranged on the annular sealing ring (41) and is electrically connected to the controller; the controller is electrically connected to the air pump.

6. A method for using a retractable piercing head for UV curing, characterized in that: Using the retractable piercing head for UV curing according to any one of claims 1 to 5, the specific steps of using the retractable piercing head are as follows: S1. The operator places the UV curing hose into the pipe to be repaired and selects an air bag tube (40) having an outer diameter that is the same as the inner diameter of the UV curing hose according to the inner diameter of the UV curing hose; S2. The operator connects one end of the airbag tube (40) to the inflation tube (10) by threading, wraps a sealing tape around the connection, and fastens the sealing nut (20) to the sealing tape; S3, placing the UV lamp holder into the UV curing hose, and passing the string for pulling the UV lamp holder through the elastic hole (121) on the rubber cover (12); S4, inserting the other end of the airbag tube (40) into the UV-curable hose, and simultaneously starting the air pump to inflate the airbag nozzle (31) on the airbag tube (40), after the hollow chamber of the airbag tube (40) is filled with gas, the outer wall of the airbag tube (40) expands and fits tightly with the inner wall of the UV-curable hose; S5. During the process of the inflation pump inflating the inflation nozzle (31) on the airbag tube (40), the operator removes the tearable film on the annular double-sided tape (43); the airbag tube (40) is connected to the UV curing hose via the annular double-sided tape (43); S5, connecting the inflation port (11) at the end of the inflation tube (10) to the inflation device, inflating the interior of the UV curing hose, and simultaneously performing the UV curing process on the UV curing hose and the UV curing hose ring (42); S6, after the UV-curing hose ring (42) is cured, an outer binding tape is tied from the outside of the UV-curing hose ring (42); S7, during the curing process of the UV curing hose; The pressure sensor detects the pressure value at the annular sealing ring (41). When the pressure value decreases, the controller controls the inflation pump to inflate the airbag tube (40).

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