Gum dipping hose turnover mechanism

Abstract

The invention relates to the technical field of pipeline repair, and provides a glue dipping hose turnover mechanism which comprises a barrel, a feeding compression roller and a sealing sleeve, the side wall of the barrel is connected with an air inlet valve, one end of the barrel is connected with a turnover flange used for circumferentially fixing the end of a hose, the other end of the barrel is provided with a gate valve, and the feeding compression roller comprises a base. The base is connected with an upper cover capable of vertically moving through a lifting mechanism, an upper pressing roller and a lower pressing roller are rotationally connected into the base, one end of the sealing sleeve is in sealing connection with the gate valve through a flange, and the other end of the sealing sleeve is clamped between the upper pressing roller and the lower pressing roller and between the base and the upper cover in a sealing mode. A hose is rolled by the upper pressing roller and the lower pressing roller and then penetrates through the sealing sleeve to enter the barrel, a dynamic closed cavity is formed through cooperation of the barrel, the feeding pressing roller and the sealing sleeve, air pressure power is provided by combining an air inlet valve, it is guaranteed that air pressure is stable to push the hose to continuously move and turn over, the hose is fed and turned over at the same time, a special storage device is not needed, and the system structure is simplified; and the operation difficulty is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of pipeline repair, in particular to a dipping hose turning mechanism. Background Art

[0002] Trenchless relining repair technology, a key method for underground pipeline repair, is widely used in repair projects for various underground pipelines, including municipal drainage, gas, and water supply, due to its advantages of not requiring large-scale excavation, minimal impact on the surrounding environment, high construction efficiency, and relatively manageable costs. Within this technology system, the resin-impregnated hose relining mechanism is one of the core devices for achieving repair operations. Its primary function is to reverse a hose, pre-impregnated with thermosetting resin, in a specific manner and insert it into the pipeline to be repaired. Subsequently, a curing process allows the hose to adhere tightly to the original pipe wall, forming a new lining layer to restore the pipeline's performance. Therefore, the performance of the relining mechanism directly affects the efficiency, scope of application, and quality of the repair operation.

[0003] Currently, the industry's commonly used equipment for turning over dipped hoses relies on a dedicated, enclosed device for storing pipes. During operation, steam is introduced into the enclosed device, using the steam's pressure and temperature to drive the pipe to turn over and simultaneously solidify the resin. However, in actual applications, to meet airtightness requirements, this type of equipment requires a relatively large turning hub. This not only takes up a lot of space but also limits the length of pipe that can be stored at a time, making it difficult to adapt to the continuous repair needs of long-distance pipelines. Furthermore, the stringent airtightness standards complicate the overall structure of the equipment, increasing manufacturing and maintenance costs and operational difficulty. These issues are particularly prominent when repairing small-diameter pipelines, limiting its practicality in small and medium-diameter pipeline repair scenarios. Summary of the Invention

[0004] The purpose of the present invention is to provide a dipping hose turning mechanism, which solves the problems of limited pipe length and complex system of the existing hose turning mechanism.

[0005] The present invention is achieved through the following technical solutions: a dipping hose flipping mechanism, including a cylinder, a feed roller and a sealing sleeve, the side wall of the cylinder is connected to an air inlet valve, one end of the cylinder is connected to a flip flange for circumferentially fixing the end of the hose, and the other end of the cylinder is provided with a gate valve, the feed roller includes a base, the base is connected to a vertically movable upper cover through a lifting mechanism, an upper pressure roller and a lower pressure roller are rotatably connected in the base, one end of the sealing sleeve is sealed with the gate valve through a flange, and the other end of the sealing sleeve is seal-clamped between the upper pressure roller and the lower pressure roller and between the base and the upper cover, and the hose passes through the sealing sleeve and enters the cylinder after being rolled by the upper pressure roller and the lower pressure roller.

[0006] Furthermore, the upper pressure roller and the lower pressure roller both include a roller, a central shaft and an arch cover. The roller is rotatably mounted on the central shaft. Both ends of the central shaft pass through the arch cover. Chucks are respectively provided at both ends of the arch cover. Mounting plates are respectively provided on both sides of the base. The mounting plates are provided with vertical grooves that slide with the ends of the central shaft. The mounting plates are connected to the chucks by bolts.

[0007] Furthermore, an adjustment block is slidably connected in the vertical groove for downwardly abutting the end of the central axis of the upper pressure roller. A first hole is vertically opened in the vertical groove on the mounting plate. The adjustment block is fastened by passing a first adjustment bolt through the first hole to fix the relative position of the upper pressure roller and the first hole.

[0008] Furthermore, a second hole is vertically opened on the mounting plate, and a second adjusting bolt is passed through the second hole to fasten the chuck of the lower pressure roller so as to fix the relative position of the lower pressure roller and the second hole.

[0009] Furthermore, the cylinder is horizontally mounted on a placement seat, and the placement seat is connected to a drain valve that is in communication with the bottom of the cylinder for discharging condensed water.

[0010] Furthermore, the gate valve is hinged with a sealing door cover.

[0011] Furthermore, the lifting mechanism is respectively arranged on both sides of the base, and the lifting mechanism includes a support connected to the base, a drive motor is provided on the support, the drive motor is connected to a screw rod through a coupling, and the threaded linear transmission on the screw rod is connected to a slider connected to the upper cover.

[0012] Furthermore, a transparent observation window is provided on the side wall of the cylinder.

[0013] Furthermore, the air intake valve is connected to the air release valve via a three-way connection.

[0014] Furthermore, a pressure gauge, a temperature gauge and a safety valve are respectively connected to the side walls of the cylinder.

[0015] The present invention has at least the following advantages and beneficial effects: (1) The cylinder, feed roller and sealing sleeve work together to form a dynamic closed cavity, and the air intake valve provides air pressure power to ensure stable air pressure to push the hose to move and flip continuously, so that the hose can be flipped while feeding. No special storage device is required, which simplifies the system structure and reduces the difficulty of operation.

[0016] (2) The detachable design of the flip flange and the adjustable spacing between the upper and lower pressure rollers of the feed rollers can adapt to hoses of different diameters. The flip flange can be flexibly replaced and the spacing between the feed rollers can be adjusted according to the diameter of the repaired pipe, thereby improving the versatility of the equipment and meeting diverse repair needs.

[0017] (3) Double sealing is achieved by setting up gate valves and sealing door covers to ensure the sealing and temperature stability during the steam curing stage, thereby improving operation safety and repair quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural schematic diagram of a dipping hose turning mechanism provided by the present invention.

[0019] Figure 2 This is a structural schematic diagram of a feed roller in a dipping hose turning mechanism provided by the present invention.

[0020] Figure 3 This is an exploded view of the feed roller in the dipping hose turning mechanism provided by the present invention.

[0021] Figure 4 The present invention provides a cross-sectional view of a feed roller in a dipping hose turning mechanism.

[0022] Figure 5 This is a structural schematic diagram of a mounting plate in a dipping hose turning mechanism provided by the present invention.

[0023] Figure markings: 1-cylinder, 10-inlet valve, 11-flip flange, 12-gate valve, 13-placement seat, 14-sealing door cover, 15-transparent observation window, 16-air relief valve, 17-pressure gauge, 18-temperature gauge, 19-safety valve, 2-feed roller, 21-base, 22-upper cover, 23-lifting mechanism, 231-support, 232-drive motor, 233-screw, 234-slider, 24-upper roller, 25-lower roller, 251-roller, 252-center axis, 253-arch cover, 254-chuck, 26-mounting plate, 260-vertical groove, 261-first hole, 262-second hole, 27-adjusting block, 3-sealing sleeve. DETAILED DESCRIPTION

[0024] The following is a detailed description of the embodiments with reference to the accompanying drawings.

[0025] Example like Figures 1 to 5 As shown, in this embodiment, a dipping hose turning mechanism is mainly disclosed, which simplifies the system structure and reduces the difficulty of operation. Its main structure includes a cylinder 1, a feed roller 2 and a sealing sleeve 3; The side wall of the cylinder body 1 is connected with an air inlet valve 10, one end of the cylinder body 1 is connected with a turnover flange 11 for circumferentially fixing the end of the hose, and the other end of the cylinder body 1 is provided with a gate valve 12. Specifically, the air inlet valve 10 is connected with compressed air during the pipe turning stage to provide a pneumatic power source for the hose turning, and is connected with steam to solidify the hose during the solidification stage. The turnover flange 11 can adopt the prior art, mainly including an annular flange plate and a tapered cylinder, the annular flange plate is connected with one end of the cylinder body 1 through a flange, the tapered cylinder is partially located in the cylinder body 1, the large-diameter end of the tapered cylinder is welded with the inner ring wall of the annular flange plate, the hose is sleeved on the small-diameter end of the tapered cylinder, different turnover flanges 11 can be replaced according to the size of the inner diameter of the repaired pipeline to adapt to the corresponding hose, and the adaptability of the repaired pipeline is improved. The gate valve 12 can adopt the prior art, and the main structure includes a motor and a knife gate, which is opened during the hose turning to enable the hose to pass through smoothly, and is closed during the steam solidification to ensure the sealing property of the rear end.

[0026] The feeding pressure roller 2 includes a base 21, the base 21 is connected with a vertically movable upper cover 22 through a lifting mechanism 23, and the base 21 is rotationally connected with an upper pressure roller 24 and a lower pressure roller 25; specifically, through the design of the upper pressure roller 24, the lower pressure roller 25 and the lifting mechanism 23 driving the upper cover 22, dynamic clamping of the sealing sleeve 3 is realized, which not only reduces the friction of the hose through rolling contact, but also guarantees the airtightness between the sealing sleeve 3 and the hose through adjustable pressing force.

[0027] One end of the sealing sleeve 3 is sealingly connected with the gate valve 12 through a flange, the other end of the sealing sleeve 3 is sealingly clamped between the upper pressure roller 24 and the lower pressure roller 25 and between the base 21 and the upper cover 22, and the hose passes through the sealing sleeve 3 after being rolled by the upper pressure roller 24 and the lower pressure roller 25 and enters the cylinder body 1. Specifically, the sealing sleeve 3 can be made of rubber material. During the hose turning process, the sealing sleeve 3 forms a closed space through the clamping of the feeding pressure roller 2, which guarantees the stability of the air pressure to push the hose to continuously move and turn, and guarantees the smoothness of the hose turning. The upper pressure roller 24 and the lower pressure roller 25 form a first extrusion seal on the sealing sleeve 3; the upper cover 22 is adjusted up and down through the lifting mechanism 23, and appropriate pressing force can be applied to make the sealing sleeve 3 fit with the upper cover 22 and the base 21 to form a second extrusion seal; during the hose turning, compressed air is introduced into the cylinder body 1, the compressed air acts on the hose, the hose is driven by the air pressure to turn outwards along the turnover flange 11, and then the hose is pulled to pass through between the upper pressure roller 24 and the lower pressure roller 25 and is pulled out from the port of the extruded sealing sleeve 3, which can not only maintain the dynamic clamping and sealing of the sealing sleeve 3, but also provide a smooth channel for the hose to avoid jamming, so as to balance the sealing and passability. The hose is turned while feeding, and a special storage device is not needed, so that the length of the dipping hose is not limited.

[0028] Further, in specific implementation, for example, Figures 3 to 5As shown, the upper pressing roller 24 and the lower pressing roller 25 provided in the embodiment of the present application each include a roller 251, a central shaft 252 and an arch cover 253, the roller 251 is rotatably sleeved on the central shaft 252, the central shaft 252 penetrates through the arch cover 253 at both ends, the arch cover 253 is provided with a chuck 254 at each end, the base 21 is provided with a mounting plate 26 at each side inside, the mounting plate 26 is provided with a vertical slot 260 which is in sliding fit with the end of the central shaft 252, and the mounting plate 26 is connected with the chuck 254 through a bolt. Specifically, the end section of the central shaft 252 is a regular hexagon, the arch cover 253 is provided with a regular hexagonal hole at each end which is in clearance fit with the end of the central shaft 252, and the central shaft 252 is slidingly connected between the side walls of the vertical slot 260, so that the central shaft 252 and the arch cover 253 are relatively fixed and will not rotate. The position of the upper pressing roller 24 and the lower pressing roller 25 is fixed by connecting the mounting plate 26, the upper pressing roller 24 and the lower pressing roller 25 and the corresponding chucks 254 through a bolt.

[0029] Further, in specific implementation, as shown in Figures 3 to 5 As shown, the vertical slot 260 is slidingly connected with an adjusting block 27 which is used to downward abut the end of the central shaft 252 of the upper pressing roller 24, the mounting plate 26 is vertically provided with a first hole 261 in the vertical slot 260, and the adjusting block 27 is fastened by a first adjusting bolt which passes through the first hole 261 to fix the relative position of the upper pressing roller 24 and the first hole 261. The adjusting block 27 downward abuts the central shaft 252 of the upper pressing roller 24, which can accurately control the pressing force of the upper pressing roller 24, so as to avoid the deformation of the hose caused by excessive pressure or the sealing failure caused by too small pressure. The first hole 261 combined with the first adjusting bolt realizes stepless adjustment and locks the position, so as to ensure the height stability of the upper pressing roller 24.

[0030] Further, in specific implementation, as shown in Figures 3 to 5 As shown, the mounting plate 26 is vertically provided with a second hole 262, and the chuck 254 of the lower pressing roller 25 is fastened by a second adjusting bolt which passes through the second hole 262 to fix the relative position of the lower pressing roller 25 and the second hole 262. The lower pressing roller 25 and the upper pressing roller 24 form a bidirectional adjustable structure, instead of only adjusting the upper pressing roller 24, which further expands the interval adjustment range and can adapt to hoses with larger pipe diameter or thicker rubber layer. The interval between the upper pressing roller 24 and the lower pressing roller 25 can be adjusted according to the thickness of the material, so as to make the material flat and ensure the uniformity of the heat-cured resin in the hose.

[0031] Further, in specific implementation, as shown in Figure 1As shown, the above-mentioned cylinder 1 provided by the embodiment of the present application is horizontally installed on the placing seat 13, and a drain valve for discharging condensed water is connected to the bottom of the cylinder 1. Specifically, the placing seat 13 can realize stable placement of the cylinder 1, provide stable support for the cylinder 1, avoid tilting of the cylinder 1 to cause deviation of the hose overturning path, and ensure uniform stress. After steam curing and repairing of the pipeline, the drain valve can completely discharge the condensed water remaining after steam curing, prevent water accumulation from corroding the inside of the cylinder 1 or affecting the air pressure or temperature stability of the next operation, avoid water interference with resin curing, prolong the service life of the equipment, and ensure the repair quality.

[0032] Further, in specific implementation, as shown in Figure 1 As shown, the above-mentioned gate valve 12 provided by the embodiment of the present application is hinged with a sealing door cover 14. Specifically, when the hose overturning needs to be steam cured, the flange connecting the sealing sleeve 3 to the gate valve 12 is removed, and the sealing door cover 14 is closed. The secondary sealing is formed by the gate valve 12 itself in combination with the sealing door cover 14, which can effectively prevent high-temperature steam leakage, avoid heat loss, improve operation safety, and ensure stable curing temperature.

[0033] Further, in specific implementation, as shown in Figure 2 , Figure 3 As shown, the above-mentioned lifting mechanism 23 provided by the embodiment of the present application is arranged on both sides of the base 21, and the lifting mechanism 23 includes a support 231 connected to the base 21, a driving motor 232 arranged on the support 231, a lead screw 233 connected to the driving motor 232 through a coupling, and a sliding block 234 connected to the upper cover 22 and threadedly and linearly driven on the lead screw 233. It should be noted that the driving motors 232 arranged on both sides are synchronously operated to ensure that the upper cover 22 and the base 21 always remain parallel, ensure uniform pressure of the upper cover 22 on the sealing sleeve 3, and further improve the reliability of the rear-end closed cavity.

[0034] Further, in specific implementation, as shown in Figure 1 As shown, the above-mentioned cylinder 1 provided by the embodiment of the present application is provided with a transparent observation window 15 on the side wall. The overturning state of the hose in the cylinder 1 (such as whether it deviates, whether the rubber dipping is uniform, and whether there are wrinkles) can be observed in real time, which facilitates the operator to timely adjust parameters (such as air pressure and roller spacing), avoids pipeline repair defects caused by failure to timely find abnormalities.

[0035] Further, in specific implementation, as shown in Figure 1As shown, the above-mentioned air inlet valve 10 provided by the embodiment of the present application is connected with the air release valve 16 through a tee joint. Specifically, one end of the main pipe of the tee joint is connected with the air release valve 16, the other end is communicated with the branch pipe arranged on the cylinder body 1, and the branch pipe of the tee joint is connected with the air inlet valve 10. During the turning, the air is supplemented through the air inlet valve 10 and the air is released through the air release valve 16, so that the stable pressure is maintained to drive the hose to move smoothly; during the solidification stage, the excess steam can be released through the air release valve 16, so that the cylinder body 1 is prevented from being overloaded due to the excessively high pressure, and the system safety is improved.

[0036] Further, in the specific implementation, as shown in Figure 1 As shown, the side wall of the above-mentioned cylinder body 1 is connected with the pressure gauge 17, the temperature gauge 18 and the safety valve 19 respectively. The pressure gauge 17 is used to display the air pressure in the cylinder body 1 in real time, so that the pressure is ensured to be enough to drive the hose during the turning and not to exceed the safety range; the temperature gauge 18 is used to monitor the steam solidification temperature, so that the resin solidification effect is ensured; and the safety valve 19 is used to provide emergency protection for the overpressure condition, so that the air pressure is automatically released when the air pressure abnormally rises, and the safety accidents such as the explosion of the cylinder body 1 are avoided, so that the equipment operation and the safety of the operator are comprehensively ensured.

[0037] The specific operation steps of the present application are as follows: 1. Open the sealing door cover 14 and the gate valve 12, and fix the front end of the sealing sleeve 3 on the knife gate valve 12; 2. Make the impregnated felt hose pass through the sealing sleeve 3 and the cylinder body 1 through the feeding pressure roller 2, fix one end of the hose on the turning flange 11, clamp the middle part of the hose together with the sealing sleeve 3 between the upper pressure roller 24 and the lower pressure roller 25, and drive the upper cover 22 to be pressed tightly by the lifting mechanism 23, so that the sealing sleeve 3 forms a closed cavity between the feeding pressure roller 2 and the gate valve 12; 3. Pass the compressed air with a certain pressure through the air inlet valve 10, and use the air pressure to push the impregnated felt hose to turn out to the pipe to be repaired through the outlet of the turning flange 11; 4. After the turning is completed, close the gate valve 12, remove the sealing sleeve 3, and close the sealing door cover 14; 5. Switch the steam to be passed through the air inlet valve 10, and solidify the felt hose impregnated with the thermosetting resin to form a new pipe lining.

Claims

1. A dipping hose turning mechanism, characterized in that: It comprises a cylinder (1), a feed roller (2) and a sealing sleeve (3); The side wall of the cylinder (1) is connected to an air inlet valve (10), one end of the cylinder (1) is connected to a flip flange (11) for circumferentially fixing the end of the hose, and the other end of the cylinder (1) is provided with a gate valve (12); The feed pressing roller (2) comprises a base (21), the base (21) is connected to a vertically movable upper cover (22) via a lifting mechanism (23), and an upper pressing roller (24) and a lower pressing roller (25) are rotatably connected within the base (21); One end of the sealing sleeve (3) is sealedly connected to the gate valve (12) through a flange, and the other end of the sealing sleeve (3) is sealed and clamped between the upper pressure roller (24) and the lower pressure roller (25) and between the base (21) and the upper cover (22). After being rolled by the upper pressure roller (24) and the lower pressure roller (25), the hose passes through the sealing sleeve (3) and enters the cylinder (1).

2. The dipped hose turning mechanism according to claim 1, characterized in that: The upper pressure roller (24) and the lower pressure roller (25) both include a roller (251), a central shaft (252) and an arch cover (253); the roller (251) is rotatably sleeved on the central shaft (252); both ends of the central shaft (252) pass through the arch cover (253); chucks (254) are respectively provided at both ends of the arch cover (253); mounting plates (26) are respectively provided on both sides of the interior of the base (21); the mounting plates (26) are provided with vertical grooves (260) that are slidably matched with the ends of the central shaft (252); the mounting plates (26) are connected to the chucks (254) by bolts.

3. The dipped hose turning mechanism according to claim 2, characterized in that: An adjusting block (27) is slidably connected in the vertical groove (260) for downwardly abutting against the end of the central axis (252) of the upper pressure roller (24); a first hole (261) is vertically opened in the vertical groove (260) of the mounting plate (26); and the adjusting block (27) is fastened by a first adjusting bolt passing through the first hole (261) to fix the relative position of the upper pressure roller (24) and the first hole (261).

4. The dipping hose turning mechanism according to claim 2, characterized in that: The mounting plate (26) is vertically provided with a second hole (262), and a second adjusting bolt is passed through the second hole (262) to fasten the chuck (254) of the lower pressure roller (25) for fixing the relative position of the lower pressure roller (25) and the second hole (262).

5. The dipped hose turning mechanism according to claim 1, characterized in that: The cylinder (1) is horizontally mounted on a placement seat (13), and the placement seat (13) is connected to a drain valve that is in communication with the bottom of the cylinder (1) and is used to discharge condensed water.

6. The dipped hose turning mechanism according to claim 1, characterized in that: The gate valve (12) is hinged with a sealing door cover (14).

7. The dipped hose turning mechanism according to claim 1, characterized in that: The lifting mechanism (23) is respectively arranged on both sides of the base (21), and the lifting mechanism (23) includes a support (231) connected to the base (21), a driving motor (232) is arranged on the support (231), and the driving motor (232) is connected to a screw rod (233) through a coupling, and a threaded linear transmission on the screw rod (233) is connected to a slider (234) connected to the upper cover (22).

8. The dipped hose turning mechanism according to claim 1, characterized in that: A transparent observation window (15) is provided on the side wall of the cylinder (1).

9. The dipped hose turning mechanism according to claim 1, characterized in that: The air inlet valve (10) is connected to an air release valve (16) via a three-way connection.

10. The dipped hose turning mechanism according to claim 1, characterized in that: A pressure gauge (17), a temperature gauge (18) and a safety valve (19) are respectively connected to the side walls of the cylinder (1).

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