Joint coating device for joint of polyethylene polyurethane prefabricated directly-buried thermal insulation pipe

Abstract

The utility model discloses a joint coating device for a polyethylene polyurethane prefabricated directly-buried thermal insulation pipe joint, which belongs to the technical field of pipeline thermal insulation joint coating and comprises a protective shell for thermal insulation, four fixing blocks are symmetrically mounted on the periphery of the protective shell, threaded rods are rotatably connected to the side surfaces of the four fixing blocks, and the threaded rods are connected with a threaded rod. A rotating column used for rotating is installed at one end of the threaded rod, a limiting groove is rotatably connected to the other end of the threaded rod, four sets of guide columns are symmetrically and fixedly connected to the inner wall of the protective shell, moving plates are slidably connected to the peripheries of the four sets of guide columns, and two hollow columns are installed on one side of each moving plate; springs are arranged in the two hollow columns, moving columns are connected to the ends, away from the moving plates, of the springs, and arc-shaped locking plates used for fixing polyethylene polyurethane prefabricated directly-buried thermal insulation pipe joints are installed at the ends, away from the springs, of the moving columns. And the joint is not easy to fall off.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the technical field of pipeline heat preservation and joint repairing, and particularly relates to a polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint repairing device. BACKGROUND

[0002] Polyethylene polyurethane prefabricated direct-buried heat preservation pipes are widely used in modern heat supply and cold supply pipeline transportation systems. However, the quality of joint repairing at the pipe joint directly affects the heat preservation performance, sealing performance and service life of the entire pipeline system. The existing polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint repairing device can meet the basic requirements of the repairing device, but the ability to fix the polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint is weak, which leads to increased risk of stress concentration and damage of the pipeline and easy falling off of the joint.

[0003] After searching, a polyurethane prefabricated direct-buried heat preservation pipe joint repairing device is disclosed in Chinese patent document (authorized publication number CN218208453U), which relates to the field of direct-buried heat preservation pipes. The utility model includes an upper shell, the upper shell is connected with a lower shell through a hinge, one side of the upper shell and the lower shell is provided with a lock strip, a fastening bolt is installed between the two lock strips, the top of the upper shell is connected with a feeding pipe and an exhaust pipe respectively, the top of the feeding pipe is provided with a cover, the top end of the exhaust pipe is installed with a connecting rod, and the top end of the connecting rod is connected with a baffle. The utility model can be fixed on the surface of the protective sleeve of the heat preservation pipe at both ends of the joint, the heat preservation material can be poured from the feeding pipe, and directly contacts with the outer protective sleeve pipe. It is not necessary to open a hole in the outer protective pipe, and the forming quality of the heat preservation material can be observed, which is convenient and efficient, greatly improves the production efficiency, and after pouring is completed, the feeding pipe is covered with the cover, the gas generated by the reaction of the foam material is effectively discharged from the exhaust pipe, and air holes are avoided. The device can meet the basic requirements of the repairing device, but the ability to fix the polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint is weak, which leads to increased risk of stress concentration and damage of the pipeline and easy falling off of the joint. UTILITY MODEL CONTENTS

[0004] The utility model aims to provide a polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint repairing device to solve the problems in the background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: A polyethylene polyurethane prefabricated direct -buried heat preservation pipe joint mouth repairing device, including the protective shell for heat preservation, the outer periphery symmetry of protective shell installs four fixed blocks, the side of four fixed blocks all is connected with the threaded rod, one end of threaded rod installs the rotary column for rotating, the other end of threaded rod is connected with the limit slot rotationally, the inner wall symmetry of protective shell is connected with four groups of guide column, the outer periphery of four groups of guide column all are connected with the moving plate slidingly, one side of moving plate installs two hollow columns, the inside of two hollow columns all is provided with the spring, the end of spring away from moving plate is connected with the moving column, the end of moving column away from spring installs the arc locking plate for fixing polyethylene polyurethane prefabricated direct -buried heat preservation pipe joint, the side welding of arc locking plate has the connecting column.

[0006] Preferably, the outer periphery of the protective shell is welded with two fixed sliding rails, and the recesses of the two fixed sliding rails are slidably provided with special-shaped fixed plates.

[0007] Preferably, the inner wall of the protective shell is welded with two connecting plates, and the ends of the two connecting plates away from the protective shell are each provided with an inner shell.

[0008] Preferably, the side of the inner shell is connected with a loose leaf, and the two ends of the inner shell are connected with sealing gaskets for sealing.

[0009] Preferably, the two ends of the protective shell are provided with arc-shaped protective plates, and the surfaces of the arc-shaped protective plates are provided with entry grooves.

[0010] Preferably, the side of the arc-shaped protective plate is provided with an arc-shaped sealing cover, and the side of the arc-shaped sealing cover is provided with a handle.

[0011] Compared with the prior art, the utility model has the following technical effects and advantages:

[0012] The polyethylene polyurethane prefabricated direct -buried heat preservation pipe joint mouth repairing device, thanks to the structure of the arc-shaped locking plate, the threaded rod is rotated by the rotary column, the moving plate and the arc-shaped locking plate are moved to the direction of the polyethylene polyurethane prefabricated direct -buried heat preservation pipe by the threaded rod, and finally the arc-shaped locking plate is in contact with the polyethylene polyurethane prefabricated direct -buried heat preservation pipe for fixing. Compared with the traditional mouth repairing device, the structure can fix the heat preservation pipe, the risk of stress concentration and damage of the pipe is reduced, and the joint is not easy to fall off.

[0013] The polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint place repairing device, benefits from the structure of the spring and the moving column, continues to rotate the rotating column, the polyethylene polyurethane prefabricated direct-buried heat preservation pipe extrudes the arc-shaped locking plate, the moving column and the spring, due to the action of the spring, prevents the hard contact of the arc-shaped locking plate with the polyethylene polyurethane prefabricated direct-buried heat preservation pipe, and is used for protecting the polyethylene polyurethane prefabricated direct-buried heat preservation pipe and parts from being damaged. BRIEF DESCRIPTION OF DRAWINGS

[0014] In order to more clearly illustrate the specific embodiment of the utility model or the technical scheme in the prior art, the drawings needed to be used in the specific embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are some embodiments of the utility model, and for those skilled in the art, other drawings can also be obtained according to these drawings without creative labor.

[0015] Figure 1 It is a structural schematic diagram of the utility model;

[0016] Figure 2 It is an internal structure schematic diagram of the utility model;

[0017] Figure 3 It is a forward sectional view of the utility model;

[0018] Figure 4 It is the utility model Figure 2 The enlarged view of A in the utility model;

[0019] Figure 5 It is the utility model Figure 3 The enlarged view of B in the utility model.

[0020] Marked with the following drawings:

[0021] In the drawing: 1, protective shell;101, fixed slide rail;102, special-shaped fixed plate;103, fixed block;104, threaded rod;105, rotating column;106, limit groove;2, moving plate;201, hollow column;202, spring;203, moving column;204, arc-shaped locking plate;205, guide column;206, connecting column;3, inner shell;301, connecting plate;302, loose leaf;303, sealing gasket;4, arc-shaped protection plate;401, entering groove;402, arc-shaped sealing cover;403, handle. DETAILED DESCRIPTION

[0022] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0023] The connection method can be any existing method, such as bonding, welding, or bolting, depending on the actual needs.

[0024] like Figures 1 to 5 The device shown is a joint repair device for a pre-insulated direct-buried polyethylene polyurethane pipe. It includes a protective shell 1 for insulation. Four fixing blocks 103 are symmetrically installed on the outer periphery of the protective shell 1. Each of the four fixing blocks 103 has a threaded rod 104 rotatably connected to its side. One end of each threaded rod 104 has a rotating column 105 for rotation, and the other end of the threaded rod 104 is rotatably connected to a limiting groove 106. Four sets of guide columns 205 are symmetrically fixedly connected to the inner wall of the protective shell 1. Each of the four sets of guide columns 205 has a sliding plate 2 slidably connected to its outer periphery. Two hollow columns 201 are installed on one side of each moving plate 2. Springs 202 are installed inside each of the two hollow columns 201. A moving column 203 is connected to the end of each spring 202 away from the moving plate 2, and a useful... An arc-shaped locking plate 204 is used to fix the joint of the pre-insulated polyethylene polyurethane direct-buried pipe. A connecting column 206 is welded to the side of the arc-shaped locking plate 204. Rotating the rotating column 105 causes the threaded rod 104 to rotate. The threaded rod 104 causes the moving plate 2 and the arc-shaped locking plate 204 to move towards the pre-insulated polyethylene polyurethane direct-buried pipe. Finally, the arc-shaped locking plate 204 contacts and fixes itself to the pre-insulated polyethylene polyurethane direct-buried pipe. If the rotating column 105 continues to rotate, the pre-insulated polyethylene polyurethane direct-buried pipe will squeeze the arc-shaped locking plate 204, the moving column 203 and the spring 202. Due to the action of the spring 202, hard contact between the arc-shaped locking plate 204 and the pre-insulated polyethylene polyurethane direct-buried pipe is prevented, thus protecting the pre-insulated polyethylene polyurethane direct-buried pipe and its components from damage.

[0025] Two fixed slide rails 101 are welded to the outer periphery of the protective shell 1. A special-shaped fixing plate 102 is slidably installed in the groove of the two fixed slide rails 101. The inner shell 3 and the protective shell 1 are put on the polyethylene polyurethane prefabricated direct-buried insulation pipe, and the two fixed slide rails 101 are brought into contact. The fixed slide rails 101 drive the inner shell 3 and the protective shell 1 to wrap the polyethylene polyurethane prefabricated direct-buried insulation pipe. The special-shaped fixing plate 102 is slidably installed on the outer periphery of the fixed slide rails 101 to fix the fixed slide rails 101.

[0026] The inner wall of the protective shell 1 is welded with two connecting plates 301, the two connecting plates 301 are installed with inner shells 3 away from one end of the protective shell 1, the side of the inner shell 3 is connected with a hinge 302, the two ends of the inner shell 3 are connected with sealing pads 303 for sealing, the outer periphery of the protective shell 1 is installed with a hinge 302 for opening and closing of the protective shell 1 and the inner shell 3, and the sealing pad 303 protects the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe.

[0027] Arc-shaped protective plates 4 are installed at both ends of the protective shell 1, the surface of the arc-shaped protective plate 4 is provided with an access groove 401, the side of the arc-shaped protective plate 4 is provided with an arc-shaped sealing cover 402, the side of the arc-shaped sealing cover 402 is installed with a handle 403, the arc-shaped sealing cover 402 can enter between the arc-shaped protective plate 4 and the inner shell 3 from the access groove 401, the arc-shaped sealing cover 402 can be fixed between the arc-shaped protective plate 4 and the inner shell 3 by rotating the arc-shaped sealing cover 402, and the arc-shaped sealing cover 402 is sleeved on the outer periphery of the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe which needs to be repaired.

[0028] Working principle

[0029] The polyethylene polyurethane prefabricated direct-buried thermal insulation pipe joint repairing device, in use, first, the arc-shaped sealing cover 402 is sleeved on the outer periphery of the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe which needs to be repaired, the interfaces are aligned, the inner shell 3 and the protective shell 1 are sleeved on the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe, the two fixed sliding rails 101 are contacted, the fixed sliding rail 101 drives the inner shell 3 and the protective shell 1 to wrap the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe, the special-shaped fixing plate 102 is slidably installed on the outer periphery of the fixed sliding rail 101, the fixed sliding rail 101 is fixed, the rotating column 105 is rotated, the rotating column 105 drives the threaded rod 104 to rotate, the threaded rod 104 drives the moving plate 2 and the arc-shaped locking plate 204 to move towards the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe, finally, the arc-shaped locking plate 204 is in contact with the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe for fixing, the rotating column 105 is continuously rotated, the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe extrudes the arc-shaped locking plate 204, the moving column 203 and the spring 202, due to the action of the spring 202, the hard contact between the arc-shaped locking plate 204 and the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe is prevented, the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe and parts are protected from being damaged, and the sealing pad 303 protects the polyethylene polyurethane prefabricated direct-buried thermal insulation pipe.

[0030] It should be noted that, in the present text, relational terms such as one and two are used only to distinguish one entity or operation from another entity or operation, without necessarily requiring or implying any such actual relationship or order between these entities or operations.

[0031] Although the embodiments of the present application have been shown and described, it is to be understood that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present application, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A polyethylene polyurethane prefabricated direct-buried thermal-insulation pipe joint jointing device, comprising a protective shell (1) for thermal insulation, characterized in that: The outer periphery of the protection shell (1) is symmetrically provided with four fixing blocks (103), the side surface of each of the four fixing blocks (103) is rotationally connected with a threaded rod (104), one end of the threaded rod (104) is provided with a rotating column (105) for rotation, the other end of the threaded rod (104) is rotationally connected with a limiting groove (106), the inner wall of the protection shell (1) is fixedly connected with four groups of guide columns (205) in symmetry, the outer periphery of each of the four groups of guide columns (205) is slidingly connected with a moving plate (2), one side of the moving plate (2) is provided with two hollow columns (201), the inner part of each of the two hollow columns (201) is provided with a spring (202), one end of the spring (202) away from the moving plate (2) is connected with a moving column (203), one end of the moving column (203) away from the spring (202) is provided with an arc-shaped locking plate (204) for fixing a polyethylene polyurethane prefabricated direct-buried heat preservation pipe joint, the side surface of the arc-shaped locking plate (204) is welded with a connecting column (206).

2. The polyethylene polyurethane prefabricated direct-buried thermal-insulation pipe joint jointing device according to claim 1, characterized in that: The outer periphery of the protection shell (1) is welded with two fixed sliding rails (101), the recesses of the two fixed sliding rails (101) are slidingly provided with special-shaped fixing plates (102).

3. The polyethylene polyurethane prefabricated direct-buried thermal-insulation pipe joint jointing device according to claim 2, characterized in that: The inner wall of the protection shell (1) is welded with two connecting plates (301), one end of each of the two connecting plates (301) away from the protection shell (1) is provided with an inner shell (3).

4. The polyethylene polyurethane preformed direct-burial thermal-insulation pipe joint jointing device according to claim 3, characterized in that: The side surface of the inner shell (3) is connected with a loose leaf (302), both ends of the inner shell (3) are connected with sealing gaskets (303) for sealing.

5. The polyethylene polyurethane prefabricated direct-buried thermal-insulation pipe joint jointing device according to claim 1, characterized in that: Both ends of the protection shell (1) are provided with arc-shaped protective plates (4), the surface of each of the arc-shaped protective plates (4) is provided with an entering groove (401).

6. The polyethylene polyurethane pre-insulated direct-buried pipe joint jointing device according to claim 5, characterized in that: The side surface of each of the arc-shaped protective plates (4) is provided with an arc-shaped sealing cover (402), the side surface of each of the arc-shaped sealing covers (402) is provided with a handle (403).

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