Pipeline plugging joint

Abstract

The utility model discloses a pipeline plugging connector which comprises a pipeline body and a shell, a first sealing rubber ring is fixedly installed on the rear side of the shell, the side, away from the shell, of the first sealing rubber ring is tightly attached to the pipeline body, and a plurality of rotating buckle devices are installed on the outer side wall of the shell. The rotating buckle device comprises a special-shaped support, a clamping rod, a connecting rod and a linkage mechanism, the special-shaped support is fixedly installed on the outer side wall of the shell, an opening is formed in the special-shaped support, the middle side of the clamping rod is rotationally connected to the rear side of the special-shaped support through a rotating shaft, and the rear side of the connecting rod is rotationally connected to the end, away from a center shaft of the shell, of the clamping rod through a rotating shaft. By means of the technical scheme, the problem that in the prior art, a pipeline plugging connector is complex to install can be solved.

Description

Technical Field

[0001] The utility model relates to the technical field of pipelines, in particular to a pipeline sealing joint. Background Art

[0002] Pipe sealing joints are special components used to seal, separate or connect pipes. They play an important role in various pipeline systems, including civil air defense pipelines, ordinary building pipelines and industrial pipelines. Their main purpose is to prevent leakage of media in the pipeline, control the flow direction of media, and facilitate maintenance and inspection of the pipeline system. Civil air defense pipelines include many types, mainly water supply and drainage pipelines, ventilation pipelines, electrical pipelines, etc. They each have important functions in civil air defense projects. There are too many pipeline interfaces. Usually, except for inspection and expansion, other interfaces are usually sealed with plugs.

[0003] Chinese patent CN212537124U proposes a stainless steel pipe plugging and sealing structure, including a plugging and sealing seat, a sealing gasket is installed on one side of the plugging and sealing seat, a stainless steel pipe joint is installed on the other side of the sealing gasket, a stainless steel water pipe is installed on one side of the stainless steel pipe joint, a threaded sealing column is installed at the middle position inside the plugging and sealing seat, a sealing liner is installed inside the threaded sealing column, a sealing edge is installed on the outside of the upper end of the sealing liner, a plugging groove is provided inside the sealing liner, and an anti-corrosion liner is installed inside the plugging groove. Air is added to the inside of the sealing airbag through an inflator, so that the sealing airbag expands and blocks the outlet of the stainless steel pipe to play a sealing role.

[0004] However, the technical solution of this patent has the following problems:

[0005] This patent uses an inflator to add air to the inside of the sealed airbag, causing the sealed airbag to expand and become larger, blocking the outlet of the stainless steel pipe to act as a seal. However, its installation is complicated and an external inflator is required to inflate it after installation, resulting in low installation efficiency.

[0006] Therefore, those skilled in the art provide a pipeline plugging joint to solve the above problems. Utility Model Content

[0007] The utility model provides a pipeline plugging joint to solve the problem of complex installation of pipeline plugging sealing structures in the prior art.

[0008] The utility model provides a pipe sealing joint, which comprises: a pipe main body and an outer shell, a first sealing rubber ring fixedly installed on the rear side of the outer shell, the first sealing rubber ring is close to the pipe main body on the side away from the outer shell, and a plurality of rotating clip devices and a linkage mechanism are installed on the outer wall of the outer shell. Each rotating clip device comprises: a special-shaped bracket, a clamping rod, and a connecting rod. The special-shaped bracket is fixedly installed on the outer wall of the outer shell, and an opening is provided on the special-shaped bracket. The middle side of the clamping rod is rotatably connected to the rear side of the special-shaped bracket through a rotating shaft, and the rear side of the connecting rod is rotatably connected to the end of the clamping rod away from the central axis of the outer shell through a rotating shaft. The end of the clamping rod away from the connecting rod is used to clamp with the pipe main body, the middle side of the connecting rod is slidably connected in the opening, the front side of the connecting rod is located in the outer shell, and the linkage mechanism is installed on the middle side of the outer shell. The linkage mechanism is respectively driven and connected to the front sides of the plurality of connecting rods to make the plurality of connecting rods rotate synchronously.

[0009] Furthermore, the linkage mechanism includes: a first threaded rod, a rotating block and a rotating handle, the first threaded rod is sealed and rotatably connected in the outer shell, the rotating block is threadedly connected to the middle side of the first threaded rod, and the rotating handle is fixedly installed on the front side of the first threaded rod; the front side of the connecting rod is rotatably connected to the rotating block through a rotating shaft.

[0010] Furthermore, the pipe body includes a main body and an outer flange connected in sequence along the axial direction, the outer flange is annularly arranged on the outer periphery of one end of the main body close to the outer shell, the clamping rod includes a connecting section and a clamping section connected to each other, the connecting section and the clamping section are perpendicular, the middle part of the connecting section is connected to the rear side of the special-shaped bracket by rotating through a rotating shaft, the rear side of the connecting rod is connected to the end of the connecting section away from the central axis of the outer shell by rotating through a rotating shaft, and the clamping section is used to clamp with the end of the outer flange facing the main body.

[0011] Furthermore, a second sealing device is installed on the rear side of the shell. The second sealing device is located inside the front end of the pipe body. The second sealing device is used to seal the opening at the front end of the pipe body.

[0012] Furthermore, the second sealing device includes: a second threaded rod, an extrusion assembly and a sealing assembly, the second threaded rod is fixedly mounted on the rear side of the first threaded rod, the sealing assembly includes: a baffle and a second sealing rubber ring, the baffle is fixedly mounted on the end of the second threaded rod away from the first threaded rod, the second sealing rubber ring is arranged in an axial ring inside the pipe body along the axial direction of the pipe body, the second sealing rubber ring is located on the rear side of the second threaded rod, the extrusion assembly is located on the side of the second sealing rubber ring close to the second threaded rod, the extrusion assembly includes: a fixed frame and a sliding block, the fixed frame is fixedly mounted on the rear side of the outer shell, the fixed frame extends along the axial direction of the second threaded rod, the sliding block is movably arranged in the fixed frame along the extension direction of the fixed frame, the sliding block is used to seal the through hole of the second sealing rubber ring, and the sliding block is threadedly connected to the end of the second threaded rod close to the first threaded rod.

[0013] Furthermore, the fixing frame is provided with a slot extending along the extension direction of the fixing frame, and the sliding block is provided with a protrusion, which is movably arranged in the slot.

[0014] Furthermore, a slope is provided on the rear side of the sliding block, and the slope is used to abut against the front side wall of the second sealing rubber ring.

[0015] The technical solution of the present invention has the following beneficial effects: 1. The present invention drives the first threaded rod to rotate by rotating the rotating handle of the linkage mechanism. The rotation of the first threaded rod causes the rotating block to move backward. The backward movement of the rotating block drives the connecting rod to move backward. The backward movement of the connecting rod causes the end of the clamping rod close to the central axis of the shell to rotate toward the central axis of the shell. The end of the clamping rod close to the central axis of the shell is tightly attached to the pipe body, quickly fixing the shell and the pipe body. The first sealing rubber ring is used to seal the gap between the pipe body and the shell, which is conducive to quickly fixing the device to the pipe body.

[0016] 2. The rotation of the first threaded rod drives the rotation of the second threaded rod, which causes the sliding block to move backward on the fixed frame. The sliding block moves backward to squeeze the second sealing rubber ring, so that one side of the second sealing rubber ring is tightly against the baffle. At the same time, the second sealing rubber ring deforms and expands under the pressure of the sliding block, so that the second sealing rubber ring and the baffle cooperate to seal the pipeline body, which is conducive to multiple sealing of the pipeline body;

[0017] The rotation of the rotating handle of the linkage mechanism drives the first threaded rod to rotate, and the rotation of the first threaded rod causes the rotating block to move forward, and the forward movement of the rotating block drives the connecting rod to move forward, and the forward movement of the connecting rod causes the end of the clamping rod close to the central axis of the shell to rotate in a direction away from the central axis of the shell, and the end of the clamping rod close to the central axis of the shell is away from the pipe body, so that the shell and the pipe body are quickly separated to replace the first sealing rubber ring. At the same time, the rotation of the first threaded rod drives the second threaded rod to rotate, and the rotation of the second threaded rod causes the sliding block to move forward on the fixed frame, and the sliding block moves forward to leave the second sealing rubber ring, so that the second sealing rubber ring is released from the squeezed state, and the baffle is removed to replace the second sealing rubber ring, which is conducive to quick replacement of the second sealing rubber ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The drawings constituting part of this application are provided to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are provided to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0019] Figure 1 Shows the structure of the pipe sealing joint provided by the utility model Figure 1 ;

[0020] Figure 2 Shows a front view of the pipeline sealing joint provided by the utility model;

[0021] Figure 3 Shows the structure of the pipe sealing joint provided by the utility model Figure 2 ;

[0022] Figure 4 Shows an overall cross-sectional view of the pipeline sealing joint provided by the utility model;

[0023] Figure 5 A structural schematic diagram showing the unlocked state of the pipeline sealing joint provided by the utility model is shown.

[0024] The above drawings include the following reference numerals:

[0025] 1. Pipe body; 11. Main body; 12. External flange;

[0026] 2. Shell;

[0027] 3. The first sealing rubber ring;

[0028] 4. Rotating snap-fit device; 41. Special-shaped bracket; 42. Snap-fit rod; 421. Connecting section; 422. Snap-fit section; 43. Connecting rod; 44. First threaded rod; 45. Rotating block; 46. Rotating handle; 47. Opening;

[0029] 5. Second sealing device; 51. Second threaded rod; 52. Fixed frame; 53. Sliding block; 54. Slot; 55. Protrusion; 56. Baffle; 57. Second sealing rubber ring; 58. Inclined surface. DETAILED DESCRIPTION

[0030] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is in no way intended to limit the present invention and its application or use. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0031] like Figure 1-Figure 5As shown, an embodiment of the utility model provides a pipe sealing joint, which includes a pipe body 1 and an outer shell 2. A first sealing rubber ring 3 is fixedly installed on the rear side of the outer shell 2. The side of the first sealing rubber ring 3 away from the outer shell 2 is tightly attached to the pipe body 1. A plurality of rotating snap devices 4 and a linkage mechanism are installed on the outer side wall of the outer shell 2. The plurality of rotating snap devices 4 are distributed at intervals along the circumference of the outer shell 2. Each rotating snap-fit device 4 includes a special-shaped bracket 41, a clamping rod 42, and a connecting rod 43. The special-shaped bracket 41 is fixedly mounted on the outer wall of the shell 2. An opening 47 is provided on the special-shaped bracket 41, wherein the opening 47 extends along the axial direction of the shell 2, and the opening 47 penetrates the special-shaped bracket 41 in the radial direction of the shell 2. The middle side of the clamping rod 42 is rotatably connected to the rear side of the special-shaped bracket 41 through a rotating shaft, and the rear side of the connecting rod 43 is rotatably connected to the end of the clamping rod 42 away from the central axis of the shell 2 through a rotating shaft. The end of the clamping rod 42 away from the connecting rod 43 is used to clamp with the pipe body 1, and the middle side of the connecting rod 43 is slidably connected in the opening 47. The front side of the connecting rod 43 is located in the shell 2. The linkage mechanism is mounted on the middle side of the shell 2, and the linkage mechanism is respectively driven and connected to the front sides of multiple connecting rods 43 to make the multiple connecting rods 43 rotate synchronously.

[0032] Specifically, the linkage mechanism includes a first threaded rod 44, a rotating block 45 and a rotating handle 46. The first threaded rod 44 is sealed and rotatably connected in the outer shell 2, the rotating block 45 is threadedly connected to the middle side of the first threaded rod 44, and the rotating handle 46 is fixedly installed on the front side of the first threaded rod 44; the front side of the connecting rod 43 is rotatably connected to the rotating block 45 through a rotating shaft.

[0033] In an embodiment of the present scheme, the connecting rod 43 includes a first rod segment and a second rod segment connected to each other, an angle is formed between the first rod segment and the second rod segment, and the angle is an obtuse angle. The length of the first rod segment is greater than the length of the second rod segment. The end of the first rod segment away from the second rod segment is hinged to the rotating block 45, and the end of the second rod segment away from the first rod segment is hinged to the clamping rod 42.

[0034] The rotation of the rotating handle 46 of the linkage mechanism drives the first threaded rod 44 to rotate, and the rotation of the first threaded rod 44 drives the rotating block 45 to move forward and backward on the first threaded rod 44, which is conducive to adjusting the front and rear position of the rotating block 45 on the first threaded rod 44.

[0035] The rotating handle 46 of the linkage mechanism rotates to drive the first threaded rod 44 to rotate, and the rotation of the first threaded rod 44 causes the rotating block 45 to move backward. The backward movement of the rotating block 45 drives the connecting rod 43 away from the end of the clamping rod 42 to move backward, and the connecting rod 43 moves backward away from the end of the clamping rod 42 so that the end of the clamping rod 42 close to the central axis of the shell 2 rotates toward the central axis of the shell 2. The end of the clamping rod 42 close to the central axis of the shell 2 is close to the pipeline body 1, and the shell 2 and the pipeline body 1 are quickly fixed. The first sealing rubber ring 3 is used to seal the gap between the pipeline body 1 and the shell 2, which is conducive to quickly fixing the equipment on the pipeline body 1.

[0036] Specifically, the pipe body 1 includes a main body 11 and an outer flange 12 connected in sequence along the axial direction. The outer flange 12 is annularly arranged on the outer periphery of the end of the main body 11 close to the outer shell 2. The clamping rod 42 includes a connecting section 421 and a clamping section 422 connected to each other. The connecting section 421 and the clamping section 422 are perpendicular. The middle part of the connecting section 421 is connected to the rear side of the special-shaped bracket 41 through a rotating shaft. The rear side of the connecting rod 43 is connected to the end of the connecting section 421 away from the central axis of the outer shell 2 through a rotating shaft. The clamping section 422 is used to clamp with the end of the outer flange 12 facing the main body 11.

[0037] Furthermore, a second sealing device 5 is installed on the rear side of the housing 2 . The second sealing device 5 is located inside the front end of the pipe body 1 . The second sealing device 5 is used to seal the opening at the front end of the pipe body 1 .

[0038] Specifically, the second sealing device 5 includes a second threaded rod 51, an extrusion assembly, and a sealing assembly. The second threaded rod 51 is coaxial with the first threaded rod 44 and is fixedly mounted on the rear side of the first threaded rod 44. The sealing assembly includes a baffle 56 and a second sealing rubber ring 57. The baffle 56 is fixedly mounted on the end of the second threaded rod 51 away from the first threaded rod 44. The second sealing rubber ring 57 is annularly arranged in the pipeline body 1 along the axial direction of the pipeline body 1 and is located on the side of the baffle 56 near the first threaded rod 44. The second sealing rubber ring 57 is located on the rear side of the second threaded rod 51. The extrusion assembly is located on the side of the second sealing rubber ring 57 near the first threaded rod 44. The extrusion assembly includes a fixed frame 52 and a sliding block 53. The fixed frame 52 is fixedly installed on the rear side of the shell 2. The fixed frame 52 extends along the axial direction of the second threaded rod 51. The sliding block 53 is movably arranged in the fixed frame 52 along the extension direction of the fixed frame 52. The sliding block 53 is used to seal the through hole of the second sealing rubber ring 57. The sliding block 53 is threadedly connected to one end of the second threaded rod 51 close to the first threaded rod 44.

[0039] Furthermore, a slot 54 is provided on the fixed frame 52 , and the slot 54 extends along the extension direction of the fixed frame 52 . A protrusion 55 is provided on the sliding block 53 , and the protrusion 55 of the sliding block 53 is movably provided in the slot 54 .

[0040] Furthermore, a slope 58 is provided on the rear side of the sliding block 53 , and the slope 58 is used to abut against the front side wall of the second sealing rubber ring 57 .

[0041] When using this device, the first threaded rod 44 rotates to drive the second threaded rod 51 to rotate. The rotation of the second threaded rod 51 causes the sliding block 53 to move backward on the fixed frame 52. The sliding block 53 moves backward to squeeze the second sealing rubber ring 57, so that one side of the second sealing rubber ring 57 is tightly against the baffle 56. At the same time, the second sealing rubber ring 57 is deformed and expanded under the squeezing of the sliding block 53, so that the second sealing rubber ring 57 and the baffle 56 cooperate to seal the pipeline body 1, which is conducive to multiple sealing of the pipeline body 1.

[0042] In addition, when replacing the first sealing rubber ring and the second sealing rubber ring 57, the rotating handle 46 of the linkage mechanism is rotated, and the rotating handle 46 rotates to drive the first threaded rod 44 to rotate. The rotation of the first threaded rod 44 causes the rotating block 45 to move forward, and the rotating block 45 moves forward to drive the connecting rod 43 to move forward. The connecting rod 43 moves forward so that the end of the clamping rod 42 close to the central axis of the shell 2 rotates in a direction away from the central axis of the shell 2, and the end of the clamping rod 42 close to the central axis of the shell 2 is away from the pipeline main body 1, so that the shell 2 and the pipeline main body 1 are quickly separated, and the first sealing rubber ring is replaced. At the same time, the rotation of the first threaded rod 44 drives the second threaded rod 51 to rotate, and the rotation of the second threaded rod 51 causes the sliding block 53 to move forward on the fixed frame 52, and the sliding block 53 moves forward to leave the second sealing rubber ring 57, so that the second sealing rubber ring 57 is released from the squeezed state, and the baffle 56 is removed, and the second sealing rubber ring 57 can be replaced, which is conducive to quick replacement of the sealing rubber ring.

[0043] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, they indicate the presence of features, steps, operations, devices, components and / or combinations thereof.

[0044] Unless otherwise specifically stated, the relative arrangement of the parts and steps, the numerical expressions and the numerical values set forth in these embodiments do not limit the scope of the present invention. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The techniques, methods and equipment known to those of ordinary skill in the relevant art may not be discussed in detail, but where appropriate, the techniques, methods and equipment should be considered as part of the authorization specification. In all examples shown and discussed here, any specific values should be interpreted as being merely exemplary and not as limitations. Therefore, other examples of the exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following figures, and therefore, once an item is defined in one figure, it does not need to be further discussed in subsequent figures.

[0045] In the description of the present invention, it needs to be understood that the directions or positional relationships indicated by directional words such as "front, back, up, down, left, right", "horizontal, vertical, vertical, horizontal" and "top, bottom" are usually based on the directions or positional relationships shown in the drawings. They are only for the convenience of describing the present invention and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific direction or be constructed and operated in a specific direction. Therefore, they cannot be understood as limiting the scope of protection of the present invention; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0046] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship of a device or feature to other devices or features as shown in the figures. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figures. For example, if the device in the drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" can include both "above" and "below". The device can also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatially relative descriptions used here are interpreted accordingly.

[0047] In addition, it should be noted that the use of words such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above words have no special meaning and therefore cannot be understood as limiting the scope of protection of this utility model.

[0048] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that the present invention is susceptible to various modifications and variations. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A pipe plugging joint, characterized in that: The pipe plugging joint comprises: a pipe body (1) and a shell (2); a first sealing rubber ring (3) is fixedly mounted on the rear side of the shell (2); a side of the first sealing rubber ring (3) away from the shell (2) is in close contact with the pipe body (1); a plurality of rotating clip devices (4) and a linkage mechanism are mounted on the outer side wall of the shell (2); each rotating clip device (4) comprises: a special-shaped bracket (41), a clipping rod (42) and a connecting rod (43); the special-shaped bracket (41) is fixedly mounted on the outer side wall of the shell (2); an opening (47) is provided on the special-shaped bracket (41); the clipping rod ( The middle side of the connecting rod (42) is rotatably connected to the rear side of the special-shaped bracket (41) through a rotating shaft, and the rear side of the connecting rod (43) is rotatably connected to the end of the clamping rod (42) away from the central axis of the shell (2) through a rotating shaft. The end of the clamping rod (42) away from the connecting rod (43) is used for clamping with the pipeline body (1), and the middle side of the connecting rod (43) is slidably connected in the opening (47). The front side of the connecting rod (43) is located in the shell (2), and the linkage mechanism is installed on the middle side of the shell (2). The linkage mechanism is respectively connected to the front sides of the multiple connecting rods (43) to make the multiple connecting rods (43) rotate synchronously.

2. The pipe sealing joint according to claim 1, characterized in that: The linkage mechanism comprises: a first threaded rod (44), a rotating block (45) and a rotating handle (46); the first threaded rod (44) is sealed and rotatably connected in the housing (2); the rotating block (45) is threadedly connected to the middle side of the first threaded rod (44); and the rotating handle (46) is fixedly mounted on the front side of the first threaded rod (44); and the front side of the connecting rod (43) is rotatably connected to the rotating block (45) via a rotating shaft.

3. The pipe sealing joint according to claim 2, characterized in that: The pipe body (1) comprises a main body (11) and an outer flange (12) connected in sequence along an axial direction, the outer flange (12) being annularly arranged on the outer periphery of one end of the main body (11) close to the outer shell (2), the clamping rod (42) comprising a connecting section (421) and a clamping section (422) connected to each other, the connecting section (421) and the clamping section (422) being perpendicular, the middle portion of the connecting section (421) being rotatably connected to the rear side of the special-shaped bracket (41) via a rotating shaft, the rear side of the connecting rod (43) being rotatably connected to the end of the connecting section (421) away from the central axis of the outer shell (2) via a rotating shaft, and the clamping section (422) being used for clamping with the end of the outer flange (12) facing the main body (11).

4. The pipe sealing joint according to claim 3, characterized in that: A second sealing device (5) is installed on the rear side of the housing (2). The second sealing device (5) is located inside the front end of the pipe body (1). The second sealing device (5) is used to seal the opening at the front end of the pipe body (1).

5. The pipe sealing joint according to claim 4, characterized in that: The second sealing device (5) comprises: a second threaded rod (51), an extrusion assembly and a sealing assembly, wherein the second threaded rod (51) is fixedly mounted on the rear side of the first threaded rod (44), and the sealing assembly comprises: a baffle (56) and a second sealing rubber ring (57), wherein the baffle (56) is fixedly mounted on an end of the second threaded rod (51) away from the first threaded rod (44), and the second sealing rubber ring (57) is annularly arranged in the pipeline body (1) along the axial direction of the pipeline body (1) and is located on a side of the baffle (56) close to the first threaded rod (44), and the second sealing rubber ring (57) is located on the second threaded rod (51). ), the extrusion assembly is located on the side of the second sealing rubber ring (57) close to the first threaded rod (44), and the extrusion assembly includes: a fixed frame (52) and a sliding block (53), the fixed frame (52) is fixedly installed on the rear side of the housing (2), the fixed frame (52) extends along the axial direction of the second threaded rod (51), the sliding block (53) is movably arranged in the fixed frame (52) along the extension direction of the fixed frame (52), the sliding block (53) is used to seal the through hole of the second sealing rubber ring (57), and the sliding block (53) is threadedly connected to the second threaded rod (51).

6. The pipe sealing joint according to claim 5, characterized in that: The fixed frame (52) is provided with a slot (54), and the slot (54) extends along the extension direction of the fixed frame (52). The sliding block (53) is provided with a protrusion (55), and the protrusion (55) of the sliding block (53) is movably arranged in the slot (54).

7. The pipe sealing joint according to claim 6, characterized in that: The rear side of the sliding block (53) is provided with an inclined surface (58), and the inclined surface (58) is used to abut against the front side wall of the second sealing rubber ring (57).

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