A new type of airtightness detection component and detector

Abstract

The present invention provides a novel airtightness detection component and a detector, which solve the technical problem that the detection ports of existing detectors are usually fixed and cannot adapt to pipes of different lengths and sizes, resulting in low detection efficiency. A novel airtightness detection component includes a first chute provided with a first slider slidable therein; a second chute provided with a second slider slidable therein; an inflation end connected to the first slider; and a plugging end rotatably connected to the second slider; wherein the first chute is perpendicular to the second chute, and both the inflation end and the plugging end are located on the right-angle plane formed by the first chute and the second chute.

Description

Technical Field

[0001] The present invention relates to the technical fields of detection instruments and pipeline airtightness detection equipment, and particularly relates to a novel airtightness detection component and detector. Background Art

[0002] There are a large number of pipelines in the chassis system of an automobile. Whether it is an oil pipe or a gas pipe, the pipeline is required to have good airtightness. This requires that during the processing of the pipeline, airtightness detection of the pipeline needs to be carried out.

[0003] Currently, for airtightness detection of pipelines, usually one end of the pipeline is inserted into the sealing end of the detector, and the other end is inserted into the inflation and pressurization end for airtightness detection. However, the sealing end and the inflation and pressurization end of the existing detector are usually fixed and cannot adapt to pipelines of different lengths and sizes. It is often necessary to manually bend the pipeline to adapt to the positions of the two ports. Since the pipeline is mostly a hard pipe or a hard pipe with a certain softness, each detection is time-consuming and laborious, and the detection efficiency is low. Summary of the Invention

[0004] The present invention provides a novel airtightness detection component and detector, which solves the technical problem that the detection ports of the existing detector are usually fixed and cannot adapt to pipelines of different lengths and sizes, resulting in low detection efficiency.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] A novel airtightness detection component includes a first chute provided with a first slider slidable therein; a second chute provided with a second slider slidable therein; an inflation end connected to the first slider; a sealing end rotatably connected to the second slider; wherein, the first chute is perpendicular to the second chute, and both the inflation end and the sealing end are located on the right-angle plane formed by the first chute and the second chute.

[0007] In an embodiment disclosed by the present invention, the angle range for the sealing end to rotate on the second slider is 0 - 180 degrees.

[0008] In an embodiment disclosed by the present invention, the first chute includes a first slot, a second slot, and a third slot. The first slot, the second slot, and the third slot are arranged in parallel. The first slider is respectively slidably connected to the first slot and the second slot. The inflation end is used to communicate with an external air source through an air pipe, and the air pipe passes through the third slot.

[0009] In an embodiment disclosed by the present invention, both the first slot and the second slot are internally provided with limiting blocks.

[0010] In an embodiment disclosed by the present invention, there are at least two limiting blocks, and the positions of the two limiting blocks respectively correspond to the two end positions in the length direction of the third groove.

[0011] The present invention also provides a new airtightness detector, which includes the new airtightness detection assembly as described above to form a detection station; a turntable fixedly connected with a first gear; and a motor connected with a second gear. Among them, there are at least 2 detection stations, and the 2 detection stations are evenly arranged on the turntable, and the first gear is meshed and connected with the second gear.

[0012] In an embodiment disclosed by the present invention, the first chute is vertically arranged on the surface of the turntable, and the second chute is horizontally arranged on the surface of the turntable.

[0013] In an embodiment disclosed by the present invention, there are 8 detection stations, and the first chutes of the 8 detection stations are sequentially connected to form an octagonal prism structure.

[0014] In an embodiment disclosed by the present invention, a stroke cylinder is arranged at the inflation end, the action end of the stroke cylinder is connected with a marking pen, and the action direction of the stroke cylinder intersects with the insertion pipe direction of the inflation end.

[0015] In an embodiment disclosed by the present invention, the bottom side of the turntable is rotatably connected with a box body, and the bottom side of the box body is connected with moving wheels.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0017] 1. The first chute of the present invention enables the inflation end to slide relatively; the second chute enables the plugging end to slide relatively and rotate, and the inflation end and the plugging end are both located on the plane of the right angle, which is convenient for corresponding sliding adjustment and rotation adjustment, can adapt to pipes of different length dimensions, and at the same time, there is no need to bend the pipe, improving the detection efficiency.

[0018] 2. The turntable of the present invention is provided with at least 2 detection stations. Through the rotation of the turntable, the pipes are sequentially inserted into the stations, and then the airtightness detection of multiple pipes can be carried out simultaneously, effectively improving the detection efficiency; only one operator is required to perform the airtightness detection of multiple pipes, which improves the detection efficiency and saves labor costs at the same time. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the accompanying drawings required in the description of the embodiments or the prior art. Obviously, the accompanying drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other accompanying drawings can be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a novel airtightness detection component involved in some embodiments of the present invention.

[0021] Figure 2 It is a schematic structural diagram of a novel airtightness detector involved in some embodiments of the present invention.

[0022] Figure 3 It is a three-dimensional structural diagram of a novel airtightness detector involved in some embodiments of the present invention.

[0023] Figure 4 It is a top view structural diagram of a novel airtightness detector involved in some embodiments of the present invention.

[0024] Figure 5 It is a schematic structural diagram of an inflation end involved in some embodiments of the present invention.

[0025] Figure 6 It is a schematic structural diagram of a first fixing block involved in some embodiments of the present invention.

[0026] Figure 7 It is a schematic structural diagram of a first conical head pipe fitting involved in some embodiments of the present invention.

[0027] Reference numerals:

[0028] 1. First sliding groove; 11. First slider; 12. First slot; 13. Second slot; 14. Third slot; 2. Second sliding groove; 21. Second slider; 3. Inflation end; 31. First cylinder; 32. First conical head pipe fitting; 33. First fixing block; 34. First through hole; 4. Sealing end; 41. Second cylinder; 42. Second conical head pipe fitting; 43. Second fixing block; 44. Second through hole; 5. Limiting block; 6. Turntable; 61. First gear; 62. Second gear; 7. Control display system; 8. Stroke cylinder; 81. Marking pen; 9. Box body; 91. Movable wheel; 10. Upper cover; 20. Lower cover; 30. Front plate; 40. Rear plate; 50. First connecting block; 60. Second connecting block; 70. First slot; 80. Second slot; 90. Detection cavity; 100. Small hole. Detailed implementation manners

[0029] In the following text, only some exemplary embodiments are simply described. As those skilled in the art can recognize, the described embodiments can be modified in various different ways without departing from the spirit or scope of the present invention. Therefore, the drawings and the description are considered to be exemplary in nature rather than restrictive.

[0030] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the products of the present invention are usually placed during use, or the orientation or positional relationship commonly understood by those skilled in the art. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0031] The terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0032] In addition, the terms "mounted", "connected", "connected to", "fixed", etc. should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or integrated; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] The embodiments of the present invention will be described in detail below with reference to the drawings.

[0034] As Figure 1 shown, the present invention provides a novel airtightness detection assembly, including a first chute 1 provided with a first slider 11 that can slide therein; a second chute 2 provided with a second slider 21 that can slide therein; an inflation end 3 connected to the first slider 11; a plugging end 4 rotatably connected to the second slider 21; wherein, the first chute 1 is perpendicular to the second chute 2, and both the inflation end 3 and the plugging end 4 are located on the right-angle plane formed by the first chute 1 and the second chute 2.

[0035] It can be understood that when detecting the pipeline, both ends of the pipeline are respectively inserted into the inflation end 3 and the plugging end 4. The inflation end 3 is used to connect to an external air source and inflate and pressurize the pipeline to achieve airtightness detection; the plugging end 4 is used to form a relatively closed space inside the pipeline for airtightness detection; this is a mature detection method in the prior art and will only be briefly described here. Similarly, the inflation end 3 and the plugging end 4 also have the function of fixing the pipeline, and there are also mature fixing means in the prior art, which will not be described here, and the existing structure can be used. Of course, the following fixing structure can also be used. Similarly, the sliding of the first slider 11 and the second slider 21 can be manual or electric.

[0036] In this embodiment, through the slidable inflation end 3 and the slidable and rotatable plugging end 4, it is possible to be applicable to pipelines of different lengths and sizes. It is not necessary to bend the pipeline once for each detection. Only when detecting pipelines of the same length and size, adjust the relative positions of the inflation end 3 and the plugging end 4, and then multiple detections can be carried out; subsequently, if it is necessary to detect pipelines of different lengths and sizes, only corresponding adjustments need to be made.

[0037] It should be understood that the above-mentioned right-angled plane refers to the plane where the right angle formed by the perpendicularity of the first chute 1 and the second chute 2 is located. This plane is bounded by the first chute 1 and the second chute 2. Since the pipeline is a long tubular structure, the inflation end 3 and the plugging end 4 are coplanar, making the pipeline, the inflation end 3 and the plugging end 4 coplanar, which is beneficial for the pipeline to be inserted and for airtightness detection, eliminating all factors that may affect the airtightness detection result due to the non-coplanarity of the three. For example, due to the non-coplanarity of the three, the pipeline may be overly bent or have too large a twist, which may cause a change in the air pressure inside the pipeline; it may cause the insertion structure between the pipeline and the inflation end 3 and the plugging end 4 to be unstable and pressure relief to occur during detection; it may cause the pipeline to deform and the internal air pressure to change; it may cause the pipeline to deform and be unable to recover, resulting in damage; it may cause the detection result to be good, but in actual use, the airtightness is poor, that is, the detection result is incorrect; and so on.

[0038] In some embodiments, the range of the angle at which the plugging end 4 rotates on the second slider 21 is 0 - 180 degrees. In some embodiments, the inflation end 3 is rotatably connected to the first slider 11, and the range of the rotation angle is 0 - 180 degrees. This solution further improves the adjustable range and can be applicable to more pipelines of different lengths and sizes.

[0039] In some embodiments, the first chute 1 includes a first slot 12, a second slot 13, and a third slot 14. The first slot 12, the second slot 13, and the third slot 14 are arranged in parallel. The first slider 11 is slidably connected to the first slot 12 and the second slot 13 respectively. The inflation end 3 is used to communicate with an external air source through an air pipe, and the air pipe passes through the third slot 14. By sliding the first slider 11 on the first slot 12 and the second slot 13, the movement of the inflation end 3 becomes more stable. By passing the air pipe through the third slot 14, the air pipe is restricted within the inner diameter range of the third slot 14, indirectly restricting the sliding range of the first slider 11 on the first chute 1, thereby preventing the first slider 11 from moving too much and disengaging from the first chute 1, thus ensuring the stability of the sliding structure between the first slider 11 and the first chute 1, indirectly enabling the inflation end 3 to adjust its position stably, avoiding accidents where additional work is required to continue the detection operation due to operation errors, that is, making the airtightness detection proceed more smoothly and effectively guaranteeing the due detection efficiency.

[0040] In some embodiments, the first slot 12 and the second slot 13 both internally have limiting blocks 5. This embodiment further limits on the basis of the previous embodiment, that is, further preventing accidents and ensuring the due detection efficiency.

[0041] In some embodiments, there are at least two limiting blocks 5, and the positions of the two limiting blocks 5 respectively correspond to the two end positions in the length direction of the third slot 14. This embodiment further limits on the basis of the previous embodiment. The limiting blocks 5 and the third slot 14 jointly limit the sliding range of the first slider 11, that is, further preventing accidents and ensuring the due detection efficiency.

[0042] As Figure 2 、 Figure 3 and Figure 4 shown, the present invention also provides a new type of airtightness detector, including the above-mentioned new type of airtightness detection component, forming a detection station; a turntable 6 fixedly connected with a first gear 61; a motor connected with a second gear 62; wherein, there are at least 2 detection stations, and the 2 detection stations are evenly arranged on the turntable 6, and the first gear 61 is meshed with the second gear 62.

[0043] In this embodiment, by driving the turntable 6 to rotate by the motor, as the turntable 6 rotates, the pipeline is inserted into the detection station, and then the airtightness detection of more than 2 pipelines can be carried out simultaneously, effectively improving the detection efficiency; and only one operator is required, which saves labor costs while improving the detection efficiency.

[0044] In some embodiments, the first chute 1 is vertically arranged on the surface of the turntable 6, and the second chute 2 is horizontally arranged on the surface of the turntable 6. The turntable 6 is horizontally arranged, that is, the first chute 1 is vertically arranged and the second chute 2 is horizontally arranged, which is more convenient for adjusting the positions of the inflation end 3 and the plugging end 4.

[0045] In some embodiments, such as Figure 2 , Figure 3 and Figure 4 shown, there are 8 detection stations. The first chutes 1 of the 8 detection stations are sequentially connected to form an octagonal prism structure. A control and display system 7 is arranged at the top of the octagonal prism. The control and display system 7 is used to display various parameters involved in airtightness detection such as the air source pressure and the pipeline pressure, and can also be used to control the operation of the motor, and can also control the position adjustment of the inflation end 3 and the plugging end 4, and can also control the action of the following stroke cylinder 8. This octagonal prism structure cooperates with the turntable 6, which is convenient for the plugging and unplugging operations of the pipeline when the turntable 6 rotates, and improves the detection efficiency.

[0046] In some embodiments, such as Figure 5 shown, a stroke cylinder 8 is arranged at the inflation end 3. The action end of the stroke cylinder 8 is connected with a marker pen 81. The action direction of the stroke cylinder 8 intersects with the insertion direction of the pipeline at the inflation end 3. The marker pen 81 is used to mark the pipeline with good detection results or mark the pipeline with unqualified detection results; in practice, it can be selected according to actual needs, which is convenient for distinguishing pipelines with different detection results. It is clear that the action direction of the stroke cylinder 8 intersects with the insertion direction of the pipeline at the inflation end 3, which means that after the pipeline is inserted, the stroke cylinder 8 drives the marker pen 81 to act, and the marker pen 81 can surely make a mark on the pipeline.

[0047] In some embodiments, the bottom side of the turntable 6 is rotatably connected with a box body 9, and the bottom side of the box body 9 is connected with moving wheels 91. The first gear 61, the second gear 62 and the motor can all be arranged in the box body 9. Even for the convenience of detection, the air source can be arranged in the box body 9, and it can be moved to the required position through the moving wheels 91 to perform detection.

[0048] In some embodiments, such as Figure 1 and Figure 5As shown in the figure, the inflation end 3 includes a first cylinder 31, a first tapered head pipe fitting 32, and a first fixing block 33. The first cylinder 31 is connected to the first slider 11. The operating end of the first cylinder 31 is connected to the first tapered head pipe fitting 32. The first tapered head pipe fitting 32 is used to connect to an external air source. The first fixing block 33 is provided with a first through hole 34. When the pipe is inserted into the first through hole 34, the first tapered head pipe fitting 32 is driven by the first cylinder 31 to insert into the pipe, so that the inner wall of the pipe is closely attached to the outer wall of the first tapered head pipe fitting 32, thereby realizing the fixation and inflation of the pipe. For the automatic fixation of the pipe, in some embodiments, the first fixing block 33 is internally provided with a sensor. The sensor is used to detect the pipe. When the pipe is inserted into the first through hole 34, the sensor detects the pipe, and the first cylinder 31 receives a signal to drive the first tapered head pipe fitting 32 to insert into the pipe. The opening direction of the first through hole 34 and the operating direction of the first cylinder 31 are on the same straight line, so that the first tapered head pipe fitting 32 can be inserted into the pipe in a straight-through manner, which can better fix the pipe, and then it can be understood as being coaxially arranged.

[0049] In some embodiments, as Figure 1 shown, the blocking end 4 includes a second cylinder 41, a second tapered head pipe fitting 42, and a second fixing block 43. The second cylinder 41 is connected to the second slider 21. The operating end of the second cylinder 41 is connected to the second tapered head pipe fitting 42. The second fixing block 43 is provided with a second through hole 44. When the pipe is inserted into the second through hole 44, the second tapered head pipe fitting 42 is driven by the second cylinder 41 to insert into the pipe, so that the inner wall of the pipe is closely attached to the outer wall of the second tapered head pipe fitting 42, thereby realizing the fixation of the pipe. For the automatic fixation of the pipe, in some embodiments, the second fixing block 43 is internally provided with a sensor. The sensor is used to detect the pipe. When the pipe is inserted into the second through hole 44, the sensor detects the pipe, and the second cylinder 41 receives a signal to drive the second tapered head pipe fitting 42 to insert into the pipe. The opening direction of the second through hole 44 and the operating direction of the second cylinder 41 are on the same straight line, so that the second tapered head pipe fitting 42 can be inserted into the pipe in a straight-through manner, which can better fix the pipe, and then it can be understood as being coaxially arranged.

[0050] Among them, as Figure 7 shown, the first tapered head pipe fitting 32 and the second tapered head pipe fitting 42 refer to pipe fittings with a tapered structure at one end, and this tapered structure is used for inserting into the pipe in a pipe-supporting manner to fix the pipe; the two only differ in that the first tapered head pipe fitting 32 has a hollow structure with openings at both ends. One opening is connected to the air source, and the other opening is used to inflate the pipe. The second tapered head pipe fitting 42 is a sealed pipe fitting structure for blocking one opening of the pipe. The sensor can be all detection and sensing devices in the prior art that can detect the pipe, such as various proximity switches, travel switches, etc.

[0051] In some embodiments, as Figure 1 、 Figure 5, and Figure 6 As shown in Figure 6 , both the first fixing block 33 and the second fixing block 43 include an upper cover 10, a lower cover 20, a front plate 30, a rear plate 40, a first connecting block 50 and a second connecting block 60. The first connecting block 50 and the second connecting block 60 are both provided with a first slot 70 and a second slot 80. The front plate 30 is inserted between the first slots 70 of the first connecting block 50 and the second connecting block 60, and the rear plate 40 is inserted between the second slots 80 of the first connecting block 50 and the second connecting block 60. The upper cover 10 and the lower cover 20 are respectively connected to the tops of the first connecting block 50 and the second connecting block 60 and the bottoms of the first connecting block 50 and the second connecting block 60 by bolts. There is a gap between the front plate 30 and the rear plate 40. The cavity formed by the upper cover 10, the lower cover 20, the front plate 30, the rear plate 40, the first connecting block 50 and the second connecting block 60 is a detection cavity 90. The detection end of the sensor is located in the detection cavity 90, which can ensure that the sensor accurately detects the pipeline, without false operation, and improves the detection efficiency; both the front plate 30 and the rear plate 40 are provided with small holes 100, and the small holes 100 of the front plate 30 and the rear plate 40 correspondingly form a first through hole 34 or a second through hole 44. The detection end of the sensor is aligned with the part of the first through hole 34 or the second through hole 44 passing through the detection cavity 90, further ensuring that the sensor accurately detects the pipeline, without false operation, and improving the detection efficiency; the ends of the first connecting block 50 and the second connecting block 60 far from the front plate 30 are respectively connected to the first cylinder 31 or the second cylinder 41 correspondingly, and correspondingly a gap is left between the rear plate 40 and the first cylinder 31 and between the rear plate 40 and the second cylinder 41. The first tapered head pipe fitting 32 is located between the rear plate 40 and the first cylinder 31, and the second tapered head pipe fitting 42 is located between the rear plate 40 and the second cylinder 41. In some embodiments, both the first connecting block 50 and the second connecting block 60 are T-shaped blocks.

[0052] The above embodiments describe multiple specific embodiments of the present invention. However, those skilled in the art should understand that without departing from the principles and essence of the present invention, various changes or modifications can be made to these embodiments, but these changes and modifications all fall within the protection scope of the present invention.

Claims

1. A new type of airtightness detector, characterized in that, Including: A novel airtightness detection component that forms a detection station, which includes: A first chute provided with a first slider that can slide therein; A second chute provided with a second slider that can slide therein; An inflation end connected to the first slider; A plugging end rotatably connected to the second slider; Wherein, the first chute is perpendicular to the second chute, and both the inflation end and the plugging end are located on the right-angle plane formed by the first chute and the second chute; A turntable fixedly connected with a first gear; A motor connected with a second gear; Wherein, there are at least 2 detection stations, and the 2 detection stations are evenly arranged on the turntable, and the first gear is meshed and connected with the second gear; The inflation end includes a first cylinder, a first tapered head pipe fitting and a first fixing block. The first cylinder is connected to the first slider, the operating end of the first cylinder is connected to the first tapered head pipe fitting, the first tapered head pipe fitting is used to connect with an external air source, the first fixing block is provided with a first through hole, and a sensor is built in the first fixing block, and the sensor is used to detect the pipeline; The plugging end includes a second cylinder, a second tapered head pipe fitting and a second fixing block. The second cylinder is connected to the second slider, the operating end of the second cylinder is connected to the second tapered head pipe fitting, the second fixing block is provided with a second through hole, and a sensor is built in the second fixing block, and the sensor is used to detect the pipeline; Both the first fixing block and the second fixing block include an upper cover, a lower cover, a front plate, a rear plate, a first connecting block and a second connecting block. Both the first connecting block and the second connecting block are provided with a first slot and a second slot. The front plate is inserted between the first slots of the first connecting block and the second connecting block, and the rear plate is inserted between the second slots of the first connecting block and the second connecting block. The upper cover and the lower cover are respectively connected to the tops and bottoms of the first connecting block and the second connecting block by bolts. There is a gap between the front plate and the rear plate. The cavity surrounded by the upper cover, the lower cover, the front plate, the rear plate, the first connecting block and the second connecting block is a detection cavity. The detection end of the sensor is located in the detection cavity. The front plate and the rear plate are both provided with small holes, and the small holes of the front plate and the rear plate correspondingly form the first through hole or the second through hole. The detection end of the sensor is aligned with the part of the first through hole or the second through hole passing through the detection cavity. The ends of the first connecting block and the second connecting block far from the front plate are respectively connected to the first cylinder or the second cylinder correspondingly. There is a gap between the rear plate and the first cylinder and the second cylinder. The first tapered head pipe fitting is located between the rear plate and the first cylinder, and the second tapered head pipe fitting is located between the rear plate and the second cylinder. Both the first connecting block and the second connecting block are T-shaped blocks.

2. The novel airtightness detector according to claim 1, characterized in that, The angle range for the plugging end to rotate on the second slider is 0 - 180 degrees.

3. The novel airtightness detector according to claim 1, characterized in that, The first chute includes a first slot, a second slot and a third slot. The first slot, the second slot and the third slot are arranged in parallel. The first slider is respectively slidably connected to the first slot and the second slot. The first tapered head pipe fitting is used to communicate with an external air source through an air pipe, and the air pipe passes through the third slot.

4. The novel airtightness detector according to claim 3, characterized in that, Both the first slot and the second slot are internally provided with limit blocks.

5. The novel airtightness detector according to claim 4, characterized in that, There are at least two limit blocks, and the positions of the two limit blocks respectively correspond to the two ends of the third slot in the length direction.

6. The novel airtightness detector according to claim 1, characterized in that, The first chute is vertically arranged on the surface of the turntable, and the second chute is horizontally arranged on the surface of the turntable.

7. The novel airtightness detector according to claim 1, characterized in that, There are 8 detection stations, and the first chutes of the 8 detection stations are sequentially connected to form an octagonal prism structure.

8. The novel airtightness detector according to claim 1, characterized in that, A stroke cylinder is arranged at the inflation end, and a marker pen is connected to the action end of the stroke cylinder. The action direction of the stroke cylinder intersects with the insertion pipe direction of the inflation end.

9. The novel airtightness detector according to claim 1, characterized in that, A box body is rotatably connected to the bottom side of the turntable, and a moving wheel is connected to the bottom side of the box body.

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