CN210053185U

CN210053185U - Double-seal explosion-proof cable lead-in device

Info

Publication number: CN210053185U
Application number: CN201920763912.2U
Authority: CN
Inventors: 郑加明; 王小云; 于志荣
Original assignee: TAIZHOU DEER MACHINERY AND ELECTRICAL MADE Co Ltd
Current assignee: TAIZHOU DEER MACHINERY AND ELECTRICAL MADE Co Ltd
Priority date: 2019-05-26
Filing date: 2019-05-26
Publication date: 2020-02-11
Anticipated expiration: 2029-05-26

Abstract

The utility model relates to the technical field of explosion-proof cable leading-in devices, in particular to a double-sealing explosion-proof cable leading-in device, which solves the defect that a gap is easy to exist between a cable leading-in device and a cable in the prior art, and comprises a first leading-in device body, a second leading-in device body and a gland nut, wherein the first leading-in device body is in threaded connection with the front end of the second leading-in device body, the gland nut is in threaded connection with the rear end of the second leading-in device body, a first rubber sealing ring and a first metal gasket are arranged between the first leading-in device body and the leading-in device body, a second rubber sealing ring and a second metal gasket are arranged between the second leading-in device body and the gland nut, a gland head is arranged at the front end of the first leading-in device body, the front end of the gland head can be deformed and is attached to the cable, the gap between the front end of the device, the cable can be limited in movement, and the connection is more stable.

Description

Double-seal explosion-proof cable lead-in device

Technical Field

The utility model relates to an explosion-proof cable entry technical field especially relates to a double containment explosion-proof cable entry.

Background

The explosion-proof cable has the characteristics of low capacitance, difficult charge storage, good shielding performance and antistatic performance, and is mainly used for communication, monitoring, detection, alarm and control systems in the production process.

Disclosure of Invention

The utility model aims at solving the shortcoming of the gap that easily exists between the cable introducing device that exists among the prior art and the cable, and the explosion-proof cable introducing device of double containment who provides.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a double containment explosion-proof cable entry device, includes the first entry device body, the second entry device body and gland nut, the front end of the first entry device body threaded connection at the second entry device body, gland nut threaded connection is in the rear end of the second entry device body, and is provided with first rubber seal and first metal packing ring between the first entry device body and the entry device body, be provided with second rubber seal and second metal packing ring between the second entry device body and the gland nut, the inboard cover of the second entry device body has sealed clamp ring, the front end fixedly connected with pressure head of the first entry device body.

Preferably, a gasket is fitted to a front side of the first introduction device body.

Preferably, an O-ring is fitted to the front side of the first introduction device body.

Preferably, the pressing head is composed of a connecting part and a plurality of pressing rings with different diameters, and the diameters of the pressing rings are sequentially reduced from one end close to the connecting part to one end far away from the connecting part.

Preferably, the inner side of the first introducing device body is provided with a connecting groove matched with the connecting part of the pressing head, and the connecting part is fixedly connected inside the connecting groove.

The utility model has the advantages that:

1. the front end of the first lead-in device body is provided with the pressing head, the pressing head is composed of a connecting part and a plurality of pressing rings with different diameters and decreasing diameters, the front end of the pressing head can deform and is attached to a cable, and gaps between the front end of the device and the cable are basically eliminated.

2. The sealing pressing ring is arranged between the two rubber sealing rings, so that the movement of the cable can be limited, the moving range of the cable relative to the leading-in device is reduced, and the connection is more stable.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of a double-sealed explosion-proof cable lead-in device provided by the present invention;

fig. 2 is a schematic structural diagram of a second embodiment of the double-sealed explosion-proof cable lead-in device provided by the utility model.

In the figure: the device comprises a gasket 1, a first lead-in device body 2, a first rubber sealing ring 3, a first metal gasket 4, a second lead-in device body 5, a compression nut 6, an O-shaped sealing ring 7, a sealing compression ring 8, a compression head 9, a second rubber sealing ring 10 and a second metal gasket 11.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and to simplify the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

The first embodiment is as follows: referring to fig. 1, a double-sealed explosion-proof cable lead-in device comprises a first lead-in device body 2, a second lead-in device body 5 and a compression nut 6, wherein the first lead-in device body 2 is in threaded connection with the front end of the second lead-in device body 5, the compression nut 6 is in threaded connection with the rear end of the second lead-in device body 5, a first rubber sealing ring 3 and a first metal gasket 4 are arranged between the first lead-in device body 2 and the lead-in device body 5, a second rubber sealing ring 10 and a second metal gasket 11 are arranged between the second lead-in device body 5 and the compression nut 6, a sealing compression ring 8 is sleeved on the inner side of the second lead-in device body 5, a compression head 9 is glued on the front end of the first lead-in device body 2, the compression head 9 is composed of a connecting part and a plurality of compression rings with different diameters, the diameters of the compression rings are sequentially reduced from one side close to the connecting part to one side far from the connecting part, a connecting groove matched with the, and the connecting part is glued inside the connecting groove.

In the present embodiment, the gasket 1 is fitted to the front side of the first introduction device body 2.

When the device is connected with a cable, a compression nut 6, a second metal gasket 11, a second rubber sealing ring 10, a sealing compression ring 8, a second leading-in device body 5, a first metal gasket 4, a first rubber sealing ring 3 and a first leading-in device body 2 are sequentially sleeved on the cable, if the cable cannot penetrate through a compression head 9, a part of the front end of the compression head 9 is cut off until the cable penetrates through the position of the compression head 9, then the first leading-in device body 2 and the second leading-in device body 5 are screwed, the second leading-in device body 5 and the compression nut 6 are screwed, the front end of the compression head 9 can deform and is attached to the cable, the gap between the front end of the device and the cable is basically eliminated, the sealing compression ring 8 can limit the movement of the cable, the movement range of the cable relative to the leading-in device is reduced, and the connection is more stable.

Example two: referring to fig. 2, a double-sealed explosion-proof cable lead-in device, unlike the first embodiment, a front side of a first lead-in device body 2 is fitted with an O-ring 7.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A double-sealing explosion-proof cable lead-in device comprises a first lead-in device body (2), a second lead-in device body (5) and a compression nut (6), it is characterized in that the first lead-in device body (2) is connected with the front end of the second lead-in device body (5) in a threaded manner, the compression nut (6) is in threaded connection with the rear end of the second lead-in device body (5), a first rubber sealing ring (3) and a first metal gasket (4) are arranged between the first lead-in device body (2) and the lead-in device body (5), a second rubber sealing ring (10) and a second metal gasket (11) are arranged between the second lead-in device body (5) and the compression nut (6), a sealing pressing ring (8) is sleeved on the inner side of the second lead-in device body (5), the front end of the first lead-in device body (2) is fixedly connected with a pressing head (9).

2. The dual-sealed explosion-proof cable lead-in device according to claim 1, wherein the gasket (1) is fitted to the front side of the first lead-in device body (2).

3. The dual sealed explosion proof cable lead-in device according to claim 1, wherein the front side of the first lead-in device body (2) is fitted with an O-ring (7).

4. The double-sealed explosion-proof cable introduction device according to claim 1, wherein the compression head (9) is composed of a connecting portion and a plurality of compression rings having different diameters, and the diameters of the compression rings are sequentially reduced from an end close to the connecting portion to an end far from the connecting portion.

5. The double-sealed explosion-proof cable introduction device according to claim 1, wherein the inner side of the first introduction device body (2) is provided with a coupling groove which is matched with the coupling part of the crimping head (9), and the coupling part is fixedly coupled inside the coupling groove.