PE pipe air tightness detection device

Abstract

The utility model discloses a PE pipe air tightness detection device, which relates to the technical field of PE pipes, and comprises a water tank, a support is fixed above the water tank, a funnel is fixed on the support, an inclined plate for bearing the PE pipe is fixed at an opening at the bottom end of the funnel, a material blocking assembly is mounted on the support, and the material blocking assembly is fixed on the water tank. The material blocking assembly is connected with the circumferential outer wall of the PE pipe on the inclined plate in an abutting mode. The device further comprises a swing assembly, the swing assembly is erected above an opening in the top of the water tank and located below the inclined plate, a clamping assembly is installed on the swing assembly, and the clamping assembly can seal and clamp openings in the two ends of the PE pipe and supply air into the PE pipe. The material receiving device further comprises a material receiving plate, and the material receiving plate is arranged on one side of the water tank and connected with the top edge of the water tank in a sliding mode. The PE pipe air tightness detection device can overcome the defects that manual feeding and discharging are time-consuming, labor-consuming and high in cost.

Description

Technical Field

[0001] The utility model relates to the technical field of PE pipes, in particular to an air tightness detection device for PE pipes. Background Art

[0002] PE pipe, or polyethylene pipe, is a polymer with multiple structures and properties. It is widely used in urban and rural water supply, pressure drainage and sewage, industrial fluid transportation, chemical industry and trenchless old pipeline reconstruction projects. After the PE pipe is produced, it needs to be tested for air tightness.

[0003] Patent CN220104398U discloses an air tightness detection device for PE pipes, including a water tank, a support frame is fixedly installed at the four corners of the top of the water tank, and hydraulic cylinders are fixedly installed on both sides of the top of the support frame, a lifting frame is fixedly installed on the piston end of the hydraulic cylinder, movable grooves are provided at both ends of the bottom of the lifting frame, movable sleeves are movable on the inner walls of the movable grooves, extension components are provided between the movable sleeves, and clamping components are provided at the bottom of the movable sleeves, a mounting frame is fixed at the middle position of the outer wall of the lifting frame, and mounting holes are provided in the middle position of the mounting frame and the middle position of the bottom of the lifting frame, the inner wall of the mounting hole is connected to a T-shaped shaft through a bearing, a hanging frame is fixed at the bottom of the T-shaped shaft, and a plurality of rows of equally distributed lifting rings are fixed at the bottom of the hanging frame, and a PE pipe body is suspended inside the same row of lifting rings.

[0004] In the above patent, before and after the test, multiple PE pipe bodies can be inserted into the lifting ring in sequence, and the lifting frame and the PE pipe body can be rotated by the handle bar. When the L-shaped limit plate fits one side of the mounting frame, the rotation is stopped, which is convenient for the clamping operation of the clamping assembly, so that the entire air tightness detection device can detect multiple PE pipes at one time, improving the detection efficiency of the entire device. Although it can detect multiple PE pipes at the same time, it requires manual loading and unloading, which is time-consuming and labor-intensive, and the staff are easily tired, and the labor cost is high.

[0005] Therefore, it is necessary to develop a PE pipe air tightness detection device to address the above defects. Utility Model Content

[0006] The utility model aims to provide a PE pipe air tightness detection device, which can solve the defects of manual loading and unloading, which is time-consuming, labor-intensive and costly.

[0007] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0008] The utility model discloses a PE pipe air tightness detection device, comprising a water tank, a bracket is fixed above the water tank, a funnel is fixed on the bracket, the bottom end of the funnel vertically penetrates the bracket and is located above the water tank, a plurality of PE pipes are arranged up and down and placed in the funnel, a vertical extension plate is fixed at the bottom opening of the funnel, an inclined plate for receiving the PE pipe is fixed at the bottom end of the extension plate along the length direction of the PE pipe, and the inclined plate is a plate body with the bottom end inclined downward; a material blocking assembly is installed on the bracket, and the material blocking assembly abuts against the circumferential outer wall of the PE pipe on the inclined plate;

[0009] It also includes a swing assembly, which is mounted above the top opening of the water tank and below the inclined plate, and a clamping assembly is installed on the swing assembly, which can seal and clamp the openings at both ends of the PE pipe and supply air into the PE pipe;

[0010] It also includes a material receiving plate, which is arranged on one side of the water tank, and the material receiving plate is slidably connected to the top edge of the water tank. A first telescopic rod is installed on the outer wall of the water tank corresponding to the material receiving plate, and the telescopic end of the first telescopic rod is fixedly connected to the material receiving plate, and the first telescopic rod is arranged along the sliding direction of the material receiving plate.

[0011] Furthermore, the funnel includes a lower hopper and a feed hopper fixed at the top of the lower hopper, the lower hopper is a rectangular tube and its inner wall is gap-matched with the PE tube; the obtuse angle between the inclined plate and the extension plate is 100° to 150°.

[0012] Furthermore, the material blocking assembly includes a second telescopic rod and a material blocking plate, the second telescopic rod is fixedly connected to the bracket, the telescopic end of the second telescopic rod faces downward and is fixedly connected to the material blocking plate, and the material blocking plate contacts the circumferential outer wall of the PE pipe on the inclined plate.

[0013] Furthermore, the swing assembly includes a first reduction motor and a rotating shaft, the rotating shaft is arranged along the length direction of the PE pipe, support plates are provided on two opposite side walls of the water tank, the rotating shaft is horizontally rotated and mounted between the two support plates, the first reduction motor is fixedly connected to any one of the support plates, and the driving shaft of the first reduction motor is coaxially fixedly connected to one end of the rotating shaft; the clamping assembly is installed on the rotating shaft.

[0014] Furthermore, the clamping assembly includes a fixed plate, a movable plate, a bidirectional screw, a rubber plug and a second reduction motor, the fixed plates are provided with two and are respectively fixed at the two ends of the rotating shaft, the movable plate is located between the two fixed plates, and the movable plate is provided with two, the rotating shaft movably passes through the two movable plates, the bidirectional screw is rotatably mounted between the two fixed plates, the two ends of the bidirectional screw are provided with threads with opposite rotation directions, the bidirectional screw passes through the middle parts of the two movable plates, the two movable plates are distributed at the two ends of the bidirectional screw and are threadedly connected with the corresponding threads on the bidirectional screw, the second reduction motor is fixedly connected to any of the fixed plates, the driving shaft of the second reduction motor is coaxially fixedly connected to one end of the bidirectional screw, the rubber plugs are provided with two and are respectively fixed at the ends of the opposite surfaces of the two movable plates, the distance between the two rubber plugs is greater than the length of the PE pipe, and an air inlet is opened on any of the rubber plugs, and the air inlet is connected to an externally arranged air source.

[0015] Furthermore, the rubber plug includes a disc portion and a conical portion, the conical portion is integrally formed with the disc portion and coaxially arranged, the maximum diameter of the conical portion matches the inner diameter of the PE pipe, and the diameter of the disc portion is greater than or equal to the outer wall diameter of the PE pipe.

[0016] Furthermore, the air inlet hole is coaxially arranged with the rubber plug, the rubber plug having the air inlet hole is an air inlet plug, one side of the movable plate corresponding to the air inlet plug is threadedly connected with an air inlet connector, and the movable plate corresponding to the air inlet plug is provided with a channel for connecting the air inlet connector and the air inlet hole, and one end of the air inlet connector is connected to the air source.

[0017] Furthermore, the material receiving plate includes a horizontal plate, the bottom surface of the horizontal plate is provided with a dovetail slide rail, and the top of the side wall of the water tank is provided with a slide groove corresponding to the dovetail slide rail, and the slide groove is slidably matched with the dovetail slide rail; the material receiving plate also includes a slide plate and a baffle, the slide plate is arranged obliquely downward, and the slide plate is fixed to the end of the horizontal plate away from the water tank, the baffle is fixed to the top surface of the horizontal plate, and the baffle is located at the end of the horizontal plate away from the slide plate, and the telescopic end of the first telescopic rod is fixedly connected to the slide plate.

[0018] Compared with the prior art, the beneficial technical effects of the utility model are:

[0019] The utility model provides a PE pipe air tightness detection device, which discharges the material through the funnel, clamps the PE pipe on the inclined plate and supplies air through the clamping assembly, drives the clamping assembly to swing downward through the swing assembly, and drives the PE pipe into the water tank, thereby performing an air tightness detection on the PE pipe. After the detection is completed, the swing assembly drives the clamping assembly to swing in the reverse direction along the original path and makes the PE pipe higher than the receiving plate, the first telescopic rod drives the receiving plate to slide under the PE pipe, and the clamping assembly releases the PE pipe, so that the PE pipe falls on the receiving plate, completing the unloading. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The utility model will be further described below in conjunction with the accompanying drawings.

[0021] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0022] Figure 2 It is a three-dimensional structural schematic diagram of the utility model from another angle;

[0023] Figure 3 It is a structural schematic diagram of the utility model during the detection process;

[0024] Figure 4 It is a structural schematic diagram of the utility model during the discharging process.

[0025] Explanation of the reference numerals in the accompanying drawings: 1. Water tank; 2. Bracket; 3. Funnel; 301. Inclined plate; 302. Lower hopper; 303. Feed hopper; 4. PE pipe; 5. Receiving plate; 501. Dovetail slide rail; 6. First telescopic rod; 7. Second telescopic rod; 8. Material baffle plate; 9. First reduction motor; 10. Rotating shaft; 11. Fixed plate; 12. Movable plate; 13. Bidirectional screw rod; 14. Rubber plug; 15. Second reduction motor; 16. Air inlet connector; 17. Collection box. DETAILED DESCRIPTION

[0026] The core of the utility model is to provide a PE pipe air tightness detection device, which can solve the defects of manual loading and unloading, which is time-consuming, labor-intensive and costly.

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", "middle", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0029] In a specific embodiment of the present invention, Figures 1 to 4 As shown, it includes a water tank 1, a bracket 2 is fixed above the water tank 1, a funnel 3 is fixed on the bracket 2, the bottom end of the funnel 3 vertically penetrates the bracket 2 and is located above the water tank 1, a plurality of PE pipes 4 are arranged up and down and placed in the funnel 3, a vertical extension plate is fixed at the bottom opening of the funnel 3, an inclined plate 301 for receiving the PE pipe 4 is fixed at the bottom end of the extension plate along the length direction of the PE pipe 4, and the inclined plate 301 is a plate body with the bottom end inclined downward; a material blocking assembly is installed on the bracket 2, and the material blocking assembly abuts against the circumferential outer wall of the PE pipe 4 on the inclined plate 301;

[0030] It also includes a swing assembly, which is mounted above the top opening of the water tank 1 and below the inclined plate 301. A clamping assembly is installed on the swing assembly, which can seal and clamp the openings at both ends of the PE pipe 4 and supply air into the PE pipe 4.

[0031] It also includes a receiving plate 5, which is arranged on one side of the water tank 1. The receiving plate 5 is slidably connected to the top edge of the water tank 1. A first telescopic rod 6 is installed on the outer wall of the water tank 1 corresponding to the receiving plate 5. The telescopic end of the first telescopic rod 6 is fixedly connected to the receiving plate 5, and the first telescopic rod 6 is arranged along the sliding direction of the receiving plate 5.

[0032] Specifically, the material is discharged through the funnel 3, the PE tube 4 on the inclined plate 301 is clamped by the clamping assembly and air is supplied, the clamping assembly is driven to swing downward by the swinging assembly, and the clamping assembly drives the PE tube 4 into the water tank 1, so as to perform an air tightness test on the PE tube 4. After the test is completed, the swinging assembly drives the clamping assembly to swing in the reverse direction along the original path and makes the PE tube 4 higher than the receiving plate 5, the first telescopic rod 6 drives the receiving plate 5 to slide under the PE tube 4, the clamping assembly releases the PE tube 4, and the PE tube 4 falls on the receiving plate 5, completing the unloading.

[0033] The funnel 3 includes a lower hopper 302 and a feed hopper 303 fixed at the top of the lower hopper 302; the obtuse angle between the inclined plate 301 and the extension plate is 100° to 150°. Whether the angle between the two is appropriate can be obtained through experiments. When the clamping assembly drives the PE tube 4 to swing, the inclined plate 301 will not interfere with the PE tube 4. Put the PE tube 4 into the lower hopper 302 through the feed hopper 303. The lower hopper 302 can be specifically adopted Figures 1 to 4 The rectangular tubular shape shown has an inner wall that is gap-matched with the PE tube 4, that is, the inner cavity width of the lower hopper 302 matches the outer wall diameter of the PE tube 4, and the inner cavity length of the lower hopper 302 matches the length of the PE tube 4. When the clamping assembly drives the PE tube 4 on the inclined plate 301 to swing downward, the other PE tubes 4 automatically fall down, thereby discharging the material.

[0034] The material blocking assembly includes a second telescopic rod 7 and a material blocking plate 8, wherein the second telescopic rod 7 is fixedly connected to the bracket 2, the telescopic end of the second telescopic rod 7 faces downward and is fixedly connected to the material blocking plate 8, and the material blocking plate 8 contacts the circumferential outer wall of the PE tube 4 on the inclined plate 301. After the clamping assembly clamps the PE tube 4, the telescopic end of the second telescopic rod 7 contracts, and the material blocking plate 8 rises synchronously, so that the material blocking plate 8 no longer limits the PE tube 4, and the PE tube 4 can smoothly detach from the inclined plate 301; before the PE tube 4 completely detaches from the inclined plate 301, the material blocking plate 8 descends a certain distance and blocks other PE tubes to prevent other PE tubes 4 from falling out of the inclined plate 301.

[0035] The swing assembly includes a first reduction motor 9 and a rotating shaft 10. The rotating shaft 10 is arranged along the length direction of the PE pipe 4. Support plates are arranged on two opposite side walls of the water tank 1. The rotating shaft 10 is horizontally rotated and mounted between the two supporting plates. The first reduction motor 9 is fixedly connected to any supporting plate. The driving shaft of the first reduction motor 9 is coaxially fixedly connected to one end of the rotating shaft 10. The clamping assembly is installed on the rotating shaft 10. The first reduction motor 9 drives the rotating shaft 10 to rotate, and the rotating shaft 10 drives the clamping assembly to swing.

[0036] The clamping assembly includes a fixed plate 11, a movable plate 12, a bidirectional screw rod 13, a rubber plug 14 and a second reduction motor 15. The fixed plate 11 is provided with two and is respectively fixed at the two ends of the rotating shaft 10. The movable plate 12 is located between the two fixed plates 11, and the movable plate 12 is provided with two. The rotating shaft 10 movably passes through the two movable plates 12. The bidirectional screw rod 13 is rotatably mounted between the two fixed plates 11. The two ends of the bidirectional screw rod 13 are provided with threads with opposite rotation directions. The bidirectional screw rod 13 passes through the middle of the two movable plates 12. The two movable plates 12 are distributed at the two ends of the bidirectional screw rod 13 and are threadedly connected with the corresponding threads on the bidirectional screw rod 13. The second reduction motor 15 is fixedly connected to any fixed plate 11, and the driving shaft of the second reduction motor 15 is coaxially fixedly connected to one end of the bidirectional screw rod 13. Two rubber plugs 14 are provided and are respectively fixed at the ends of the opposite surfaces of the two movable plates 12. The distance between the two rubber plugs 14 is greater than the length of the PE pipe 4. An air inlet is opened on any rubber plug 14, and the air inlet is connected to an externally arranged air source. The second reduction motor 15 drives the bidirectional screw rod 13 to rotate, and the bidirectional screw rod 13 threads drive the two movable plates 12 to move toward or away from each other, so that the rubber plug 14 clamps or releases the PE pipe 4.

[0037] The rubber plug 14 includes a disc portion and a cone portion. The cone portion and the disc portion are integrally formed and coaxially arranged. The maximum diameter of the cone portion matches the inner diameter of the PE tube 4 , and the diameter of the disc portion is greater than or equal to the outer wall diameter of the PE tube 4 .

[0038] The air inlet hole is coaxially arranged with the rubber plug 14. The rubber plug 14 with the air inlet hole is the air inlet plug. An air inlet connector 16 is threadedly connected to one side of the movable plate 12 corresponding to the air inlet plug. A channel for connecting the air inlet connector 16 and the air inlet hole is provided on the movable plate 12 corresponding to the air inlet plug. One end of the air inlet connector 16 is connected to the air source.

[0039] The receiving plate 5 includes a horizontal plate, the bottom surface of which is provided with a dovetail slide rail 501, and a slide groove corresponding to the dovetail slide rail 501 is provided on the top of the side wall of the water tank 1, and the slide groove and the dovetail slide rail 501 are slidably matched; the receiving plate 5 also includes a slide plate and a baffle plate, the slide plate is arranged downwardly and is fixed on the end of the horizontal plate away from the water tank 1, the baffle plate is fixed on the top surface of the horizontal plate, and the baffle plate is located at the end of the horizontal plate away from the slide plate, and the telescopic end of the first telescopic rod 6 is fixedly connected to the slide plate. The baffle plate prevents the PE pipe 4 from falling into the water tank 1 after falling. The slide plate guides the PE pipe 4 to enter the collection box 17.

[0040] The utility model discloses a PE pipe air tightness detection device having the following working principles: the material is discharged through the funnel 3, the second reduction motor 15 drives the bidirectional screw 13 to rotate, the bidirectional screw 13 threads drive the two movable plates 12 to move toward each other, so that the rubber plug 14 clamps the PE pipe 4 on the inclined plate 301, the externally arranged air source supplies air to the PE pipe 4 through the air inlet joint 16, the telescopic end of the second telescopic rod 7 contracts, and the material baffle plate 8 rises synchronously, so that the material baffle plate 8 no longer limits the PE pipe 4, the first reduction motor 9 drives the rotating shaft 10 to rotate, the rotating shaft 10 drives the clamping assembly to swing downward, and the clamping assembly drives the PE pipe 4 to enter the water tank 1, so as to perform air tightness detection on the PE pipe 4. After the detection is completed, the swing assembly drives the clamping assembly to swing in the opposite direction along the original path and makes the PE tube 4 higher than the receiving plate 5, the first telescopic rod 6 drives the receiving plate 5 to slide to the bottom of the PE tube 4, and the second reduction motor 15 drives the bidirectional screw 13 to rotate, and the bidirectional screw 13 threadedly drives the two movable plates 12 to move in opposite directions, so that the rubber plug 14 releases the PE tube 4, and the PE tube 4 falls on the receiving plate 5, and then the PE tube 4 slides down along the slide plate into the collection box 17 to complete the unloading; when the clamping assembly drives the PE tube 4 on the inclined plate 301 to swing downward, the other PE tubes 4 automatically fall down, thereby unloading.

[0041] In this specification, each embodiment is described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the embodiments can be referred to each other, and the embodiments can be combined with each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant parts can be referred to the method part.

[0042] The above embodiments are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A PE pipe air tightness detection device, comprising a water tank (1), characterized in that: A bracket (2) is fixed above the water tank (1), a funnel (3) is fixed on the bracket (2), the bottom end of the funnel (3) vertically passes through the bracket (2) and is located above the water tank (1), a plurality of PE pipes (4) are arranged in an up-and-down manner and placed in the funnel (3), a vertical extension plate is fixed at the bottom opening of the funnel (3), an inclined plate (301) for receiving the PE pipe (4) is fixed at the bottom end of the extension plate along the length direction of the PE pipe (4), the inclined plate (301) being a plate body with the bottom end inclined downward; a material blocking assembly is installed on the bracket (2), the material blocking assembly abuts against the circumferential outer wall of the PE pipe (4) on the inclined plate (301); It also includes a swing assembly, which is mounted above the top opening of the water tank (1) and is located below the inclined plate (301). A clamping assembly is installed on the swing assembly, and the clamping assembly can seal and clamp the openings at both ends of the PE pipe (4) and supply air into the PE pipe (4); It also comprises a material receiving plate (5), the material receiving plate (5) being arranged on one side of the water tank (1), the material receiving plate (5) being slidably connected to the top edge of the water tank (1), a first telescopic rod (6) being mounted on the outer wall of the water tank (1) corresponding to the material receiving plate (5), the telescopic end of the first telescopic rod (6) being fixedly connected to the material receiving plate (5), and the first telescopic rod (6) being arranged along the sliding direction of the material receiving plate (5).

2. The PE pipe air tightness detection device according to claim 1, characterized in that: The funnel (3) comprises a lower hopper (302) and a feed hopper (303) fixed at the top of the lower hopper (302); the lower hopper (302) is in a rectangular tubular shape and its inner wall is gap-matched with the PE tube (4); the obtuse angle between the inclined plate (301) and the extension plate is 100° to 150°.

3. The PE pipe air tightness detection device according to claim 1 or 2, characterized in that: The material blocking assembly comprises a second telescopic rod (7) and a material blocking plate (8); the second telescopic rod (7) is fixedly connected to the bracket (2); the telescopic end of the second telescopic rod (7) faces downward and is fixedly connected to the material blocking plate (8); the material blocking plate (8) is in contact with the circumferential outer wall of the PE pipe (4) on the inclined plate (301).

4. The PE pipe air tightness detection device according to claim 1, characterized in that: The swing assembly comprises a first reduction motor (9) and a rotating shaft (10), wherein the rotating shaft (10) is arranged along the length direction of the PE pipe (4), and support plates are arranged on two opposite side walls of the water tank (1). The rotating shaft (10) is horizontally rotatably mounted between the two support plates, and the first reduction motor (9) is fixedly connected to any of the support plates, and the driving shaft of the first reduction motor (9) is coaxially fixedly connected to one end of the rotating shaft (10); the clamping assembly is mounted on the rotating shaft (10).

5. The PE pipe air tightness detection device according to claim 4, characterized in that: The clamping assembly comprises a fixed plate (11), a movable plate (12), a bidirectional screw rod (13), a rubber plug (14) and a second reduction motor (15); the fixed plate (11) is provided with two and is respectively fixed at two ends of the rotating shaft (10); the movable plate (12) is located between the two fixed plates (11), and the movable plate (12) is provided with two; the rotating shaft (10) movably passes through the two movable plates (12); the bidirectional screw rod (13) is rotatably mounted between the two fixed plates (11); the two ends of the bidirectional screw rod (13) are provided with threads with opposite rotation directions; the bidirectional screw rod (13) passes through the middle of the two movable plates (12); The two movable plates (12) are distributed at both ends of the bidirectional screw rod (13) and are threadedly connected to the corresponding threads on the bidirectional screw rod (13); the second reduction motor (15) is fixedly connected to any one of the fixed plates (11); the driving shaft of the second reduction motor (15) is coaxially fixedly connected to one end of the bidirectional screw rod (13); two rubber plugs (14) are provided and are respectively fixed at the ends of the opposite surfaces of the two movable plates (12); the distance between the two rubber plugs (14) is greater than the length of the PE pipe (4); and an air inlet hole is opened on any one of the rubber plugs (14), and the air inlet hole is connected to an externally arranged air source.

6. The PE pipe air tightness detection device according to claim 5, characterized in that: The rubber plug (14) comprises a disc portion and a conical portion, wherein the conical portion is integrally formed with the disc portion and is coaxially arranged, the maximum diameter of the conical portion matches the inner diameter of the PE tube (4), and the diameter of the disc portion is greater than or equal to the outer wall diameter of the PE tube (4).

7. The PE pipe air tightness detection device according to claim 6, characterized in that: The air inlet hole is coaxially arranged with the rubber plug (14); the rubber plug (14) having the air inlet hole is an air inlet plug; one side of the movable plate (12) corresponding to the air inlet plug is threadedly connected with an air inlet connector (16); and a channel for connecting the air inlet connector (16) and the air inlet hole is provided on the movable plate (12) corresponding to the air inlet plug; one end of the air inlet connector (16) is connected to the air source.

8. The PE pipe air tightness detection device according to claim 1, characterized in that: The receiving plate (5) includes a horizontal plate, the bottom surface of which is provided with a dovetail slide rail (501), and the top end of the side wall of the water tank (1) is provided with a slide groove corresponding to the dovetail slide rail (501), and the slide groove is slidably matched with the dovetail slide rail (501); the receiving plate (5) also includes a slide plate and a baffle, the slide plate is arranged to be inclined downward, and the slide plate is fixed to the end of the horizontal plate away from the water tank (1), the baffle is fixed to the top surface of the horizontal plate, and the baffle is located at the end of the horizontal plate away from the slide plate, and the telescopic end of the first telescopic rod (6) is fixedly connected to the slide plate.

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