Cover pressing type loose sleeve limiting expansion joint

Abstract

The utility model discloses a cover pressure type loose sleeve limiting expansion joint which comprises two joints, each joint comprises a second connecting pipe and a first connecting pipe, the same mounting shell is fixed between the first connecting pipe and the second connecting pipe, and the two second connecting pipes are connected through a sealing mechanism; a sealing air bag is arranged on the inner wall of the mounting shell, threads are arranged on the inner wall of the first connecting pipe, the first connecting pipe is in threaded connection with an extrusion threaded sleeve, the sealing air bag in the mounting shell can be extruded, the sealing air bag is expanded, a pipeline inserted into the first connecting pipe can be extruded by the expanded sealing air bag, sealing is formed, and connection of the pipeline and the connector is achieved. The sealing mechanism comprises a first mounting ring and a second mounting ring which are fixedly arranged on the two second connecting pipes in a sleeving mode respectively, a sleeve is arranged between the first mounting ring and the second mounting ring, and the first mounting ring and the second mounting ring are connected through a plurality of screws and nuts. According to the utility model, the connection between the pipeline and the joint is realized, a better sealing effect is formed through extrusion, and the disassembly and assembly are convenient.

Description

Technical Field

[0001] This utility model relates to the field of expansion joint technology, and in particular to a cover-type loose-fitting limiting expansion joint. Background Technology

[0002] Expansion joints are suitable for conveying seawater, fresh water, hot and cold water, drinking water, domestic sewage, crude oil, fuel oil, lubricating oil, refined oil, air, gas, steam with a temperature not exceeding 250 degrees Celsius, and particulate powder media. Expansion joints are a new product for connecting pumps, valves, pipelines, and other equipment to pipelines. They are connected by bolts to form a single unit with a certain amount of displacement. This allows for adjustments based on site dimensions during installation and maintenance. During operation, axial thrust is transferred back to the entire pipeline system. This not only improves work efficiency but also provides a certain degree of protection for pumps, valves, and other pipeline equipment.

[0003] Existing compression-type expansion joints have certain drawbacks: they are inconvenient to install, and the sealing after installation is not good, making the connection prone to water leakage and causing unnecessary trouble. To address this, we have designed a compression-type loose-fitting expansion joint. Utility Model Content

[0004] The purpose of this utility model is to overcome the shortcomings of the existing technology and propose a cover-type loose-fitting expansion joint.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cover-type loose-fitting expansion joint includes two joints, each joint including a second connecting pipe and a first connecting pipe. The first connecting pipe and the second connecting pipe are fixed together by the same mounting shell, and the two second connecting pipes are connected by a sealing mechanism.

[0007] The inner wall of the mounting housing is provided with a sealing airbag, and the inner wall of the first connecting pipe is threaded and the first connecting pipe is threaded with a compression sleeve, which can compress the sealing airbag inside the mounting housing, causing the sealing airbag to expand. The pipe inserted into the first connecting pipe can be compressed by the expanded sealing airbag to form a seal, thereby realizing the connection between the pipe and the connector.

[0008] As a further embodiment of this utility model, the sealing mechanism includes a first mounting ring and a second mounting ring respectively fixedly sleeved on two second pipes, a sleeve is provided between the first mounting ring and the second mounting ring, and the first mounting ring and the second mounting ring are connected by a plurality of screws and nuts.

[0009] As a further scheme of the utility model, a plurality of installation holes are equally formed on the first installation ring and the second installation ring, the screw rod passes through the installation holes on the first installation ring and the second installation ring and is threadedly connected with the nut.

[0010] As a further scheme of the utility model, a groove ring is formed on the side of the first installation ring and the second installation ring which are close to each other, a sealing gasket is arranged in the groove ring, the two ends of the sleeve are extruded with the sealing gasket, a threaded connecting block, a threaded sleeve and a pressing rod are arranged, the threaded sleeve is rotated, the pressing rod is extruded, the pressing rod extrudes the corresponding screw rod, the inner wall of the threaded sleeve is extruded with the nut, and the stability of the screw rod and the nut is strengthened.

[0011] As a further scheme of the utility model, installation openings corresponding to the screw rods are equidistantly formed on the outer wall of the second installation ring, and the pressing rods are rotatably arranged in the installation openings, and the threaded sleeve for extruding the pressing rod is arranged on the second installation ring.

[0012] As a further scheme of the utility model, a plurality of threaded connecting blocks are equidistantly fixed on the side of the second installation ring facing the first installation ring, the threaded sleeve is threadedly connected with the threaded connecting block, a threaded connecting block, a threaded sleeve and a pressing rod are arranged, the threaded sleeve is rotated, the pressing rod is extruded, the pressing rod extrudes the corresponding screw rod, the inner wall of the threaded sleeve is extruded with the nut, and the stability of the screw rod and the nut is strengthened.

[0013] The utility model discloses the beneficial effect is:

[0014] The utility model discloses: because adopt the setting joint, connecting piece, first connecting pipe, installation shell, sealing air bag and extruding screw sleeve etc., set up the sealing mechanism for two joints, and can realize dismounting, the extruding screw sleeve of setting is threadedly connected with the first connecting pipe, can pass through the rotation extruding screw sleeve, make extruding screw sleeve rotate in the inner wall of first connecting pipe, can extrude the sealing air bag in installation shell, make the sealing air bag inflation, the pipeline of inserting in the first connecting pipe can be extruded by the inflation sealing air bag, form the sealing, realize the connection of pipeline and joint, form the better sealing effect through extruding, and convenient dismounting.

[0015] The utility model discloses: set up the sealing mechanism including sleeve, first installation ring, second installation ring, screw rod and first installation ring, and set up sealing gasket on first installation ring and second installation ring, can realize the extrusion sleeve of first installation ring and second installation ring forming sealing through the setting of screw rod and nut through the design above. ACCURATE DRAWING

[0016] Figure 1 A cover pressure type loose sleeve limit expansion joint three-dimensional structure schematic view is provided for the utility model;

[0017] Figure 2A first partially expanded stereoscopic structure schematic view of the cover pressing type loose sleeve limiting expansion joint is provided in the utility model.

[0018] Figure 3 A second partially expanded stereoscopic structure schematic view of the cover pressing type loose sleeve limiting expansion joint is provided in the utility model.

[0019] Figure 4 A third partially expanded stereoscopic structure schematic view of the cover pressing type loose sleeve limiting expansion joint is provided in the utility model.

[0020] In the drawing: 1, joint; 2, sleeve; 3, connecting piece; 301, first mounting ring; 302, second mounting ring; 303, screw rod; 304, nut; 4, first connecting pipe; 5, mounting shell; 6, sealing air bag; 7, extruded screw sleeve; 8, second connecting pipe; 9, threaded connecting block; 10, threaded sleeve shell; 11, pressing rod; 12, groove ring; 13, sealing gasket. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments.

[0022] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict. The utility model will be described in detail below with reference to the drawings and in combination with the embodiments.

[0023] Reference Figures 1-4 A cover pressing type loose sleeve limiting expansion joint comprises two joints 1, the joint 1 comprises a second connecting pipe 8 and a first connecting pipe 4, the same mounting shell 5 is fixed between the first connecting pipe 4 and the second connecting pipe 8, and the two second connecting pipes 8 are connected through a sealing mechanism.

[0024] The inner wall of the mounting shell 5 is provided with a sealing air bag 6, the inner wall of the first connecting pipe 4 is provided with a thread, the extruded screw sleeve 7 is threadedly connected to the first connecting pipe 4, the sealing air bag 6 in the mounting shell 5 can be extruded, the sealing air bag 6 is expanded, the pipeline inserted into the first connecting pipe 4 can be extruded by the expanded sealing air bag 6, a seal is formed, and the connection between the pipeline and the joint 1 is realized.

[0025] In the embodiment, the sealing mechanism comprises a first mounting ring 301 and a second mounting ring 302 fixedly sleeved on the two second connecting pipes 8 respectively, the sleeve 2 is arranged between the first mounting ring 301 and the second mounting ring 302, and the first mounting ring 301 and the second mounting ring 302 are connected through a plurality of screw rods 303 and nuts 304.

[0026] In this embodiment, a plurality of mounting holes are equidistantly formed on the first mounting ring 301 and the second mounting ring 302, the threaded rod 303 passes through the mounting holes on the first mounting ring 301 and the second mounting ring 302 and is threadedly connected with the nut 304.

[0027] In this embodiment, a groove ring 12 is formed on the side of the first mounting ring 301 and the second mounting ring 302 close to each other, a sealing gasket 13 is arranged in the groove ring 12, the two ends of the sleeve 2 are extruded against the sealing gasket 13, the threaded connecting block 9, the threaded sleeve 10 and the pressing rod 11 are arranged, the threaded sleeve 10 is rotated to extrude the pressing rod 11, the pressing rod 11 extrudes the corresponding threaded rod 303, the inner wall of the threaded sleeve 10 is extruded against the nut 304, and the stability of the threaded rod 303 and the nut 304 is enhanced.

[0028] In this embodiment, the outer wall of the second mounting ring 302 is equidistantly provided with mounting openings corresponding to the threaded rods 303, and the pressing rods 11 are rotatably arranged in the mounting openings, and the threaded sleeve 10 for extruding the pressing rods 11 is arranged on the second mounting ring 302.

[0029] In this embodiment, a plurality of threaded connecting blocks 9 are equidistantly fixed on the side of the second mounting ring 302 facing the first mounting ring 301, the threaded sleeve 10 is threadedly connected with the threaded connecting block 9, the threaded connecting block 9, the threaded sleeve 10 and the pressing rod 11 are arranged, the threaded sleeve 10 is rotated to extrude the pressing rod 11, the pressing rod 11 extrudes the corresponding threaded rod 303, the inner wall of the threaded sleeve 10 is extruded against the nut 304, and the stability of the threaded rod 303 and the nut 304 is enhanced.

[0030] Working principle: the sealing mechanism is arranged for the two joints 1 and can be disassembled, the extruding screw sleeve 7 is threadedly connected with the first connecting pipe 4, the extruding screw sleeve 7 is rotated in the inner wall of the first connecting pipe 4 by rotating the extruding screw sleeve 7, the sealing air bag 6 in the installation shell 5 can be extruded, the pipeline inserted in the first connecting pipe 4 can be extruded by the expanded sealing air bag 6, the pipeline is sealed, and the pipeline and the joint 1 are connected.

[0031] The sealing mechanism comprises the sleeve 2, the first mounting ring 301, the second mounting ring 302, the threaded rod 303 and the first mounting ring 301, and the sealing gasket 13 is arranged on the first mounting ring 301 and the second mounting ring 302, the first mounting ring 301 and the second mounting ring 302 extrude the sleeve 2 to form a seal by the arrangement of the threaded rod 303 and the nut 304.

[0032] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0033] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the exemplary embodiments according to this application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0034] The above description is merely a preferred embodiment of this utility model and is not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cover-type loose-fitting expansion joint, comprising two joints (1), characterized in that, The connector (1) includes a second connector (8) and a first connector (4), the first connector (4) and the second connector (8) are fixed together by the same mounting shell (5), and the two second connectors (8) are connected by a sealing mechanism; The inner wall of the mounting shell (5) is provided with a sealing airbag (6), the inner wall of the first connecting pipe (4) is provided with threads, and the first connecting pipe (4) is threadedly connected with a compression sleeve (7).

2. The cover-type loose-fitting expansion joint according to claim 1, characterized in that, The sealing mechanism includes a first mounting ring (301) and a second mounting ring (302) respectively fixedly sleeved on two second pipes (8), a sleeve (2) is provided between the first mounting ring (301) and the second mounting ring (302), and the first mounting ring (301) and the second mounting ring (302) are connected by a plurality of screws (303) and nuts (304).

3. The cover-type loose-fitting expansion joint according to claim 2, characterized in that, The first mounting ring (301) and the second mounting ring (302) are equally provided with a plurality of mounting holes. The screw (303) passes through the mounting holes on the first mounting ring (301) and the second mounting ring (302) and is threadedly connected to the nut (304).

4. The cover-type loose-fitting expansion joint according to claim 3, characterized in that, The first mounting ring (301) and the second mounting ring (302) are both provided with grooved rings (12) on their adjacent sides. A sealing gasket (13) is provided inside the grooved ring (12). Both ends of the sleeve (2) are pressed against the sealing gasket (13).

5. A cover-type loose-fitting expansion joint according to claim 4, characterized in that, The second mounting ring (302) has mounting openings for corresponding screws (303) at equal intervals on its outer wall, and a pressure rod (11) is rotatably installed inside the mounting opening. A threaded sleeve (10) for pressing the pressure rod (11) is installed on the second mounting ring (302).

6. A cover-type loose-fitting expansion joint according to claim 5, characterized in that, The second mounting ring (302) has several threaded connecting blocks (9) fixed at equal intervals on the side facing the first mounting ring (301), and the threaded sleeve (10) is threadedly connected to the threaded connecting blocks (9).

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