A ground sealing device for thermoplastic molding

Abstract

This utility model relates to the field of pipeline repair technology, and in particular to a ground sealing device for thermoplastic molding. It aims to solve the technical problems of existing technologies that use a heating method involving inserting a steam pipe into a liner and manually wrapping it with a cotton quilt. This method is labor-intensive, difficult to coordinate, and prone to steam leakage at the quilt wrapping point, leading to burns and uneven softening of the liner. The new ground sealing device for thermoplastic molding uses a box-shaped structure with clamping claws to enclose a plastic pipe. The clamping claws secure the plastic pipe, and hot steam is then introduced into the insulated space formed by the box. This method effectively improves the stability and safety of the heating process, reduces labor costs, lowers the risk of burns, and ensures uniform softening of the liner. It overcomes the technical problems of existing pipe sealing operations that rely on inserting a steam pipe into the liner and manually wrapping it with a cotton quilt, resulting in labor-intensive operation, difficult coordination, steam leakage at the quilt wrapping point, burns, and uneven softening of the liner.

Description

Technical Field

[0001] This utility model relates to the field of trenchless pipeline repair technology, and in particular to a ground sealing device for thermoplastic molding. Background Technology

[0002] In thermoplastic pipe repair work, workers need to heat and soften the pipe opening of the inner liner and install the plug on the ground. The current practice is to first insert a steam pipe into the inner liner and wrap it with a cotton blanket for heating. After heating for a period of time, the inner liner softens. Then, the blanket and steam pipe are removed, and multiple people work together to insert a rubber plug into the liner. However, this operation is labor-intensive and difficult to coordinate, and the cotton blanket wrapping area is prone to steam leakage, causing burns. This leads to unstable wrapping methods, limited insulation, and ultimately uneven softening of the liner.

[0003] Existing pipeline repair work involves heating the pipe by inserting a steam pipe into the liner and manually wrapping it with a cotton quilt. This method is labor-intensive, difficult to coordinate, and prone to steam leakage at the quilt wrapping point, which can cause burns and uneven softening of the liner. Utility Model Content

[0004] The purpose of this utility model is to provide a ground sealing device for thermoplastic molding, so as to solve the technical problems in the related technology of heating by inserting a steam pipe into the liner and manually wrapping a cotton quilt, which leads to labor-intensive operation, difficulty in coordination, easy steam leakage at the cotton quilt wrapping area causing burns, and uneven softening of the liner.

[0005] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0006] The ground sealing device for thermoplastic molding provided by this utility model includes:

[0007] The enclosure comprises a housing and a tensioning assembly. The housing is installed at the wellhead and surrounds the plastic pipe to provide an insulated environment. A steam pipe communicates with the housing for introducing steam into the housing to heat the plastic pipe. The tensioning assembly includes a clamping claw and a support arm. One end of the support arm is connected to the housing, and the other end is connected to the clamping claw, which is used to clamp the plastic pipe.

[0008] Specifically, the housing includes an outer cylinder, a top cover, and latches. Multiple latches are located at the contact point between the top cover and the outer cylinder, and are evenly distributed around the outer periphery of both, enabling a detachable connection between the top cover and the outer cylinder. The top cover has a through hole for inserting the steam pipe.

[0009] Specifically, the tensioning assembly also includes an operating lever. The operating lever is detachably connected to the support arm and is used to drive the support arm to swing, thereby causing the clamping claws to expand the plastic tube.

[0010] Specifically, it also includes a pressure-plugging assembly, which includes a pressure rod and an abutment frame. The abutment frame abuts against a rubber plug, and the abutment frame, the rubber plug, and the plastic tube are arranged in sequence. The pressure rod is hinged to the outer cylinder and abuts against the end of the abutment frame away from the rubber plug. An operating handle is provided at the end of the pressure rod away from the hinge axis. The operating handle is the end of the pressure rod far from the hinge axis, and the abutment frame is the end of the pressure rod near the hinge axis. The pressure rod is used to amplify the downward pressure at the operating handle and act on the abutment frame. The swinging of the pressure rod in the direction of decreasing inclination angle with the horizontal plane is used to move the abutment frame downward, thereby pressing the rubber plug into the inlet of the inner liner tube.

[0011] Specifically, the pressure plug assembly also includes a sliding frame, which is installed on the outer cylinder. The sliding frame has a guide groove, and the abutment frame is also provided with an extension rod. The extension rod slides in the guide groove to guide the downward movement of the abutment frame, thereby improving the pressure stability of the rubber plug.

[0012] Specifically, the abutment frame includes a mounting bracket and an abutment rod. One end of the abutment rod abuts against the end face of the rubber plug, and the other end is slidably connected to a sliding groove in the mounting bracket. The sliding of the abutment rod along the sliding groove is used to avoid the bend of the rubber plug.

[0013] Specifically, the support arm includes a clamping seat, a rocker arm connecting rod, and a mounting seat. The clamping claw is mounted on the clamping seat, and the mounting seat is mounted on the outer cylinder. The two ends of the rocker arm connecting rod are respectively hinged to the clamping seat and the mounting seat, and the swinging of the rocker arm connecting rod is used to drive the clamping claw to expand the plastic tube.

[0014] Specifically, the support arm also includes an auxiliary rod, and the auxiliary rod, the mounting base, the rocker arm connecting rod, and the clamping base are sequentially hinged to form a parallelogram-shaped connecting rod group.

[0015] Specifically, the outer cylinder includes a first half-ring and a second half-ring, which are detachably connected to form a complete circle by bolts.

[0016] Specifically, the clamping jaws include a first caliper, a second caliper, and an adjusting screw. Both the first and second calipers are equipped with engagement teeth, and the first caliper is hinged to the second caliper. The relative swinging of the first and second calipers is used to secure the plastic tube through the engagement teeth. The adjusting screw penetrates the second caliper and abuts against the first caliper, thereby limiting the clamping angle between the first and second calipers and controlling the clamping force of the clamping jaws on the plastic tube.

[0017] Based on the above technical solutions, the beneficial effects of this utility model are analyzed as follows:

[0018] This utility model provides a ground sealing device for thermoplastic molding, comprising:

[0019] The enclosure comprises a housing and a tensioning assembly. The housing is installed at the wellhead and surrounds the plastic pipe to provide an insulated environment. A steam pipe communicates with the housing for introducing steam into the housing to heat the plastic pipe. The tensioning assembly includes a clamping claw and a support arm. One end of the support arm is connected to the housing, and the other end is connected to the clamping claw, which is used to clamp the plastic pipe.

[0020] In practical applications, the housing is installed at the wellhead where the plastic pipe extends, forming an insulated environment around the plastic pipe. The support arm connects between the clamping claw and the housing. The clamping claw holds and secures the plastic pipe. The steam pipe communicating with the housing is opened, and the hot steam inside the housing is used to heat and soften the plastic pipe. The housing is used to prevent hot steam leakage.

[0021] As can be seen, compared with existing technologies, this ground sealing device for thermoplastic molding uses a box body equipped with clamping claws to wrap the plastic tube, fix the plastic tube with the clamping claws, and then introduce hot steam into the insulated space formed by the box body. This heating method can effectively improve the stability and safety of the heating process, reduce labor costs, reduce the risk of burns, and ensure uniform softening of the lining tube. It overcomes the technical problems of existing pipe sealing operations, which involve inserting a steam pipe into the lining tube and manually wrapping it with a cotton quilt. These methods are labor-intensive, difficult to coordinate, and prone to steam leakage at the quilt wrapping area, leading to burns and uneven softening of the lining tube. Attached Figure Description

[0022] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the structure of the ground sealing device for thermoplastic molding during heating, provided in an embodiment of the present invention.

[0024] Figure 2 A schematic diagram of the structure of the ground sealing device used in thermoplastic molding after removing the top cover;

[0025] Figure 3 This is a schematic diagram of the structure of the ground sealing device used in thermoplastic molding when the plastic pipe is opened;

[0026] Figure 4 This is a schematic diagram of the structure of the ground sealing device used in thermoplastic molding before the rubber plug is pressed in;

[0027] Figure 5 This is a schematic diagram of the structure of the ground sealing device used in thermoplastic molding after the rubber plug has been pressed in;

[0028] Figure 6 This is a schematic diagram of the pressure plugging assembly;

[0029] Figure 7 This is a schematic diagram showing the fit between the abutment frame and the rubber plug;

[0030] Figure 8 Schematic diagram of the tensioning component Figure 1 ;

[0031] Figure 9 Schematic diagram of the tensioning component Figure 2 .

[0032] icon:

[0033] 001. Plastic pipe; 002. Rubber plug;

[0034] 100. Box body; 110. Outer cylinder; 111. First half ring; 112. Second half ring; 120. Top cover; 130. Lock; 101. Through hole;

[0035] 200. Tensioning assembly; 210. Clamping jaws; 211. First caliper; 212. Second caliper; 213. Adjusting screw; 220. Support arm; 221. Clamping seat; 222. Rocker arm linkage; 223. Mounting base; 224. Auxiliary rod; 230. Operating rod;

[0036] 300, Pressure plug assembly; 310, Pressure rod; 301, Operating handle; 320, Abutment frame; 321, Mounting frame; 303, Sliding groove; 322, Abutment rod; 323, Extension rod; 330, Sliding frame; 302, Guide groove. Detailed Implementation

[0037] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0039] The following detailed description, in conjunction with the accompanying drawings, outlines some embodiments of the present invention. Unless otherwise specified, the following embodiments and features can be combined with each other.

[0040] Existing pipeline repair work involves heating the pipe by inserting a steam pipe into the inner liner pipe opening and manually wrapping it with a cotton quilt. This method is labor-intensive, difficult to coordinate, and prone to steam leakage at the quilt wrapping point, which can cause burns and uneven softening of the liner pipe.

[0041] In view of this, the present invention provides a ground sealing device for thermoplastic molding, comprising:

[0042] A housing 100 and a tensioning assembly 200 are included. The housing 100 is installed at the wellhead and surrounds the plastic pipe 001 to provide an insulated environment. A steam pipe communicates with the housing 100 to introduce steam into the housing 100 to heat the plastic pipe 001. The tensioning assembly 200 includes a clamping claw 210 and a support arm 220. One end of the support arm 220 is connected to the housing 100, and the other end is connected to the clamping claw 210, which is used to clamp the plastic pipe 001.

[0043] In summary, the ground sealing device for thermoplastic molding provided by this utility model can achieve the following technical effects:

[0044] This ground sealing device for thermoplastic molding employs a box 100 equipped with clamping claws 210 to enclose a plastic tube 001. The clamping claws 210 secure the plastic tube 001, and hot steam is then introduced into the insulated space formed by the box 100. This heating method effectively improves the stability and safety of the heating process, reduces labor costs, lowers the risk of burns, and ensures uniform softening of the lining tube. It overcomes the technical problems of existing pipe sealing operations, which involve inserting a steam pipe into the lining tube and manually wrapping it with a cotton quilt. These methods are labor-intensive, difficult to coordinate, and prone to steam leakage at the quilt wrapping point, leading to burns and uneven softening of the lining tube.

[0045] The following combination Figures 1 to 9 The structure and shape of the ground sealing device for thermoplastic molding provided in this embodiment are described in detail:

[0046] A housing 100 and a tensioning assembly 200 are included. The housing 100 is installed at the wellhead and surrounds the plastic pipe 001 to provide an insulated environment. A steam pipe communicates with the housing 100 to introduce steam into the housing 100 to heat the plastic pipe 001. The tensioning assembly 200 includes a clamping claw 210 and a support arm 220. One end of the support arm 220 is connected to the housing 100, and the other end is connected to the clamping claw 210, which is used to clamp the plastic pipe 001.

[0047] A housing 100 and a tensioning assembly 200 are included. The housing 100 is installed at the wellhead and surrounds the plastic pipe 001 to provide an insulated environment. A steam pipe communicates with the housing 100 to introduce steam into the housing 100 to heat the plastic pipe 001. The tensioning assembly 200 includes a clamping claw 210 and a support arm 220. One end of the support arm 220 is connected to the housing 100, and the other end is connected to the clamping claw 210, which is used to clamp the plastic pipe 001.

[0048] Regarding the structural composition of the housing 100, specifically:

[0049] The housing 100 includes an outer cylinder 110, a top cover 120, and latches 130. Multiple latches 130 are located at the contact point between the top cover 120 and the outer cylinder 110, and are evenly distributed around the outer periphery of both structures, enabling a detachable connection between the top cover 120 and the outer cylinder 110. The top cover 120 has a through hole 101 for inserting a steam pipe.

[0050] To facilitate quick assembly and disassembly of the device, in this embodiment, the outer cylinder 110 includes a first half-ring 111 and a second half-ring 112, which are detachably connected as a complete circle by bolts. To improve the fit between the first half-ring 111 and the second half-ring 112, a liner is provided between them, and bolts are sequentially inserted through the first half-ring 111, the liner, and the second half-ring 112 for fastening.

[0051] Regarding the structural composition of the gripper 210, specifically:

[0052] The clamping jaws 210 include a first clamp 211, a second clamp 212, and an adjusting screw 213. Both the first clamp 211 and the second clamp 212 are provided with engagement teeth, and the first clamp 211 is hinged to the second clamp 212. The relative swinging of the first clamp 211 and the second clamp 212 is used to fix the plastic tube 001 through the engagement teeth. The adjusting screw 213 penetrates the second clamp 212 and abuts against the first clamp 211, which is used to limit the clamping angle between the first clamp 211 and the second clamp 212, thereby controlling the clamping force of the clamping jaws 210 on the plastic tube 001.

[0053] Regarding the structural composition of support arm 220, specifically:

[0054] The support arm 220 includes a clamping seat 221, a rocker arm connecting rod 222, and a mounting seat 223. The clamping claw 210 is mounted on the clamping seat 221, and the mounting seat 223 is mounted on the outer cylinder 110. The two ends of the rocker arm connecting rod 222 are hinged to the clamping seat 221 and the mounting seat 223, respectively. The swinging of the rocker arm connecting rod 222 is used to drive the clamping claw 210 to expand the plastic tube 001.

[0055] To improve the motion stability of the gripper 210, in this embodiment, the support arm 220 further includes an auxiliary rod 224. The auxiliary rod 224, the mounting base 223, the rocker arm connecting rod 222, and the gripper 221 are sequentially hinged to form a parallelogram-shaped connecting rod group.

[0056] In this embodiment, the tensioning assembly 200 further includes an operating lever 230. The operating lever 230 is detachably connected to the support arm 220 and is used to drive the support arm 220 to swing, thereby causing the clamping claw 210 to expand the plastic tube 001. During the heating and softening process of the plastic tube 001, the operating lever 230 remains separate from the support arm 220, only being inserted into the support arm 220 when expanding the tube. This avoids the operating lever 230 being heated by steam, which would increase the difficulty of subsequent operations.

[0057] To facilitate pressing the rubber plug 002 into the plastic tube 001, this embodiment also includes a plugging assembly 300, which includes a pressure rod 310 and an abutment frame 320. The abutment frame 320 abuts against the rubber plug 002, and the abutment frame 320, rubber plug 002, and plastic tube 001 are arranged in sequence. The pressure rod 310 is hinged to the outer cylinder 110 and abuts against the end of the abutment frame 320 away from the rubber plug 002. An operating handle 301 is provided at the end of the pressure rod 310 away from the hinge axis. The operating handle 301 is the far end of the pressure rod 310 from the hinge axis, and the abutment frame 320 is the near end of the pressure rod 310 from the hinge axis. The pressure rod 310 is used to amplify the downward pressure at the operating handle 301 and act on the abutment frame 320. The pressure rod 310 is a force-saving lever. The swing of the pressure rod 310 in the direction of decreasing inclination angle with the horizontal plane is used to drive the abutment frame 320 to move downward, thereby pressing the rubber plug 002 into the plastic tube 001.

[0058] To improve the motion stability of the abutment frame 320 when it is pressed down, in this embodiment, the pressure plug assembly 300 also includes a sliding frame 330. The sliding frame 330 is installed on the outer cylinder 110 and has a guide groove 302. The abutment frame 320 is also provided with an extension rod 323, which slides in the guide groove 302 to guide the downward movement of the abutment frame 320, thereby improving the pressing stability of the rubber plug 002.

[0059] To prevent damage to the bent portion of the rubber plug 002 due to compressive force during the pressing process, in this embodiment, the abutment frame 320 includes a mounting frame 321 and an abutment rod 322. One end of the abutment rod 322 abuts against the end face of the rubber plug 002, and the other end is slidably connected to a sliding groove 303 formed in the mounting frame 321. The sliding of the abutment rod 322 along the sliding groove 303 is used to avoid the bend of the rubber plug 002.

[0060] In summary, the specific working process of the ground sealing device for thermoplastic molding provided in this embodiment is as follows:

[0061] Assemble the first half-ring 111 and the second half-ring 112 into a complete circle and place it above the wellhead. Install the support arm 220 inside the first half-ring 111 and the second half-ring 112. Place the plastic tube 001 between the first clamp 211 and the second clamp 212. Rotate the adjusting screw 213 to make the first clamp 211 and the second clamp 212 clamp and engage the plastic tube 001.

[0062] Place the top cover 120 on top of the outer cylinder 110 and lock it with the latch 130 to form the insulation space of the plastic tube 001. Insert the steam pipe into the through hole 101 to start introducing steam to heat the plastic tube 001.

[0063] After heating for a period of time until the plastic tube 001 softens, remove the top cover 120. Insert the operating rod 230 into the rocker arm connecting rod 222 and press it down. The rocker arm connecting rod 222 and the auxiliary rod 224 will drive the clamping claw 210 to open the plastic tube 001.

[0064] The sliding frame 330 and the abutment frame 320 are installed on the top of the outer cylinder 110, and the extension rod 323 of the abutment frame 320 is inserted into the guide groove 302. The pressure rod 310 is hinged to the outer cylinder 110 and abuts against the abutment frame 320. The spacing of the abutment rods 322 is pre-adjusted according to the bend size of the rubber plug 002.

[0065] Insert the rubber plug 002 into the plastic tube 001, and move the abutment bracket 320 down so that the abutment rod 322 abuts against the end face of the rubber plug 002.

[0066] Pressing down the operating handle 301 amplifies the action of the pressure rod 310, causing the abutment frame 320 and the rubber plug 002 to move downwards, thus pressing the rubber plug 002 into the plastic tube 001. Once the rubber plug 002 is fully pressed into the plastic tube 001, the plastic tube 001 and the clamping claw 210 are separated.

[0067] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A ground sealing device for thermoplastic molding, characterized in that, include: A housing (100) and a tensioning assembly (200), the housing (100) being installed at the wellhead and surrounding the plastic pipe (001) to provide an insulated environment; The steam pipe is connected to the box (100) and is used to introduce steam into the box (100) to heat the plastic pipe (001). The tensioning assembly (200) includes a clamping claw (210) and a support arm (220). One end of the support arm (220) is connected to the housing (100), and the other end is connected to the clamping claw (210). The clamping claw (210) is used to clamp the plastic tube (001).

2. The ground sealing device for thermoplastic molding according to claim 1, characterized in that: The housing (100) includes an outer cylinder (110), a top cover (120), and a latch (130); Multiple latches (130) are provided at the contact point between the top cover (120) and the outer cylinder (110) and are evenly distributed on the outer periphery of the top cover (120) and the outer cylinder (110) to realize the detachable connection between the top cover (120) and the outer cylinder (110); The top cover (120) has a through hole (101) for inserting the steam pipe.

3. The ground sealing device for thermoplastic molding according to claim 2, characterized in that: The tensioning assembly (200) also includes an operating lever (230); The operating lever (230) is detachably connected to the support arm (220) and is used to drive the support arm (220) to swing so as to drive the clamping claw (210) to expand the plastic tube (001).

4. The ground sealing device for thermoplastic molding according to claim 3, characterized in that: It also includes a pressure plug assembly (300), which includes a pressure rod (310) and an abutment frame (320). The abutting frame (320) abuts against the rubber plug (002), and the abutting frame (320), the rubber plug (002), and the plastic tube (001) are arranged in sequence; The pressure rod (310) is hinged to the outer cylinder (110) and abuts against the end of the abutment frame (320) away from the rubber plug (002). An operating handle (301) is provided at the end of the pressure rod (310) away from the hinge axis. The operating handle (301) is the far end of the pressure rod (310) from the hinge axis, and the abutment frame (320) is the near end of the pressure rod (310) from the hinge axis. The pressure rod (310) is used to amplify the downward pressure at the operating handle and act on the abutment frame (320). The swing of the pressure rod (310) in the direction of decreasing inclination angle with the horizontal plane is used to drive the abutment frame (320) to move downward, thereby pressing the rubber plug (002) into the plastic tube (001).

5. The ground sealing device for thermoplastic molding according to claim 4, characterized in that: The pressure plug assembly (300) also includes a sliding frame (330), which is installed on the outer cylinder (110). The sliding frame (330) has a guide groove (302), and the abutment frame (320) is also provided with an extension rod (323). The extension rod (323) slides in the guide groove (302) to guide the downward movement of the abutment frame (320), thereby improving the pressure stability of the rubber plug (002).

6. The ground sealing device for thermoplastic molding according to claim 4, characterized in that: The abutment frame (320) includes a mounting frame (321) and an abutment rod (322); One end of the abutment rod (322) abuts against the end face of the rubber plug (002), and the other end is slidably connected to the sliding groove (303) opened in the mounting bracket (321). The sliding of the abutment rod (322) along the sliding groove (303) is used to avoid the bend of the rubber plug (002).

7. The ground sealing device for thermoplastic molding according to claim 2, characterized in that: The support arm (220) includes a clamping seat (221), a rocker arm link (222), and a mounting seat (223); The clamping claw (210) is mounted on the clamping seat (221), and the mounting seat (223) is mounted on the outer cylinder (110). The rocker arm connecting rod (222) is hinged at both ends to the clamping seat (221) and the mounting seat (223), respectively. The swing of the rocker arm connecting rod (222) is used to drive the clamping claw (210) to expand the plastic tube (001).

8. The ground sealing device for thermoplastic molding according to claim 7, characterized in that: The support arm (220) also includes an auxiliary rod (224), and the auxiliary rod (224), the mounting base (223), the rocker arm connecting rod (222), and the clamping base (221) are sequentially hinged to form a parallelogram connecting rod group.

9. The ground sealing device for thermoplastic molding according to claim 2, characterized in that: The outer cylinder (110) includes a first half-ring (111) and a second half-ring (112), which are detachably connected to form a complete circle by bolts.

10. The ground sealing device for thermoplastic molding according to claim 1, characterized in that: The clamping claw (210) includes a first clamp (211), a second clamp (212) and an adjusting screw (213). Both the first clamp (211) and the second clamp (212) are provided with biting teeth. The first clamp (211) is hinged to the second clamp (212). The relative swinging of the first caliper (211) and the second caliper (212) is used to fix the plastic tube (001) by means of the biting teeth. The adjusting screw (213) penetrates the second caliper (212) and abuts against the first caliper (211) to limit the clamping angle between the first caliper (211) and the second caliper (212), thereby controlling the clamping force of the clamping claw (210) on the plastic tube (001).

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