CN215647437U

CN215647437U - Novel explosion-proof heating rod applied to explosion-proof environment of plastic melt pump

Info

Publication number: CN215647437U
Application number: CN202121214191.3U
Authority: CN
Inventors: 武晓文; 李超军
Original assignee: Hangzhou Liangdong Automation Equipment Co ltd
Current assignee: Hangzhou Liangdong Automation Equipment Co ltd
Priority date: 2021-06-01
Filing date: 2021-06-01
Publication date: 2022-01-25
Anticipated expiration: 2031-06-01

Abstract

The utility model provides a novel explosion-proof heating rod, which comprises a heating rod, a junction box barrel, a junction box cover and an O-shaped ring, wherein the junction box barrel is arranged in the heating rod; the junction box cover is arranged on the junction box barrel, and the O-shaped ring is positioned between the junction box cover and the junction box barrel; the heating rod extends into the junction box cylinder. The two ends of the junction box barrel body at the head and the tail are provided with openings; the junction box cover is arranged at the head end of the junction box barrel body; a circular plate is arranged at the tail end of the junction box barrel, a through hole is formed in the middle of the circular plate, and the head end of a heating rod penetrates through the through hole of the circular plate and extends into the inner cavity of the junction box barrel; and a hole is formed in the middle of the junction box barrel or the junction box cover, and a wire inlet pipe is arranged at the hole. The novel explosion-proof heating rod mainly comprises a heating rod, a junction box barrel, a junction box cover and an O-shaped ring, wherein the junction box cover and the junction box barrel are threaded and the O-shaped ring is added, the outer diameter of the junction box cover is the same as that of the barrel, a flanging flange is not required for fixing, and the space is saved on the premise of meeting explosion prevention.

Description

Novel explosion-proof heating rod applied to explosion-proof environment of plastic melt pump

Technical Field

The utility model relates to an explosion-proof heating rod, in particular to a novel explosion-proof heating rod applied to an explosion-proof environment of a plastic melt pump.

Background

The explosion-proof junction box of the existing explosion-proof heating rod is fixed by a flange through screws, and for heated objects which are installed on a pump head and the like and have high requirements on installation space, insufficient space may be caused for installation or insufficient space for other operations after installation.

Accordingly, there is a need for improvements in the art.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem of providing a novel explosion-proof heating rod applied to an explosion-proof environment of a plastic melt pump, which has smaller installation space.

In order to solve the technical problem, the utility model provides a novel explosion-proof heating rod, which comprises a heating rod, a junction box barrel, a junction box cover and an O-shaped ring, wherein the junction box barrel is arranged in the heating rod;

the junction box cover is arranged on the junction box barrel, and the O-shaped ring is positioned between the junction box cover and the junction box barrel;

the heating rod extends into the junction box cylinder.

As an improvement of the novel explosion-proof heating rod applied to the explosion-proof environment of the plastic melt pump, the utility model comprises the following steps:

the two ends of the junction box barrel body at the head and the tail are provided with openings; the junction box cover is arranged at the head end of the junction box barrel body;

a circular plate is arranged at the tail end of the junction box barrel, a through hole is formed in the middle of the circular plate, and the head end of a heating rod penetrates through the through hole of the circular plate and extends into the inner cavity of the junction box barrel;

and a hole is formed in the middle of the junction box barrel or the junction box cover, and a wire inlet pipe is arranged at the hole.

a junction box internal thread is arranged inside the head end of the junction box barrel;

the tail end of the junction box cover is provided with a bulge, the outer surface of the bulge is provided with a box cover external thread, the box cover external thread is matched and matched with the junction box internal thread, and the box cover external thread and the junction box internal thread are in threaded connection;

the head end of the bulge is provided with a box cover groove, and the head end of the inner cavity of the junction box barrel is provided with a barrel groove; the groove of the box cover is matched with the groove of the cylinder body; after the junction box cover is screwed into the junction box barrel, the box cover groove and the barrel groove can form a sealing cavity, and the O-shaped ring is extruded in the sealing cavity by the box cover groove and the barrel groove.

the outer diameter of the junction box cover is the same as that of the junction box cylinder body.

the heating rod and the junction box barrel are connected in a non-detachable mode.

The novel explosion-proof heating rod has the technical advantages that:

the novel explosion-proof heating rod mainly comprises a heating rod, a junction box barrel, a junction box cover and an O-shaped ring, wherein the junction box cover and the junction box barrel are threaded and the O-shaped ring is added, the outer diameter of the junction box cover is the same as that of the barrel, a flanging flange is not required for fixing, and the space is saved on the premise of meeting explosion prevention.

The junction box cover and the junction box barrel are fixed through threads, and the installation space is reduced.

Drawings

The following describes embodiments of the present invention in further detail with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a junction box barrel 2 of a novel explosion-proof heating rod applied to an explosion-proof environment of a plastic melt pump, which is provided with a hole;

FIG. 2 is a schematic structural diagram of the junction box barrel 2, the junction box cover 3 and the O-ring 4 in FIG. 1;

FIG. 3 is an enlarged view of a portion of the junction box barrel 2 and the junction box cover 3 of FIG. 1;

FIG. 4 is a schematic structural diagram of the opening of the junction box cover 3 of the novel explosion-proof heating rod applied to the explosion-proof environment of the plastic melt pump according to the utility model;

fig. 5 is a schematic structural view of the junction box barrel 2, the junction box cover 3 and the O-ring 4 in fig. 4.

Detailed Description

The utility model will be further described with reference to specific examples, but the scope of the utility model is not limited thereto.

Embodiment 1, a novel explosion-proof heating rod for use in an explosion-proof environment of a plastic melt pump, as shown in fig. 1 to 5, comprises a heating rod 1, a junction box cylinder 2, a junction box cover 3 and an O-ring 4;

the end to end of the junction box barrel 2 is open; tapping threads inside the head end of the junction box barrel body 2 to form junction box internal threads 22; the tail end of the junction box cylinder body 2 is fully welded with the circular plate 21, a through hole is formed in the middle of the circular plate 21, the head end of the heating rod 1 penetrates through the through hole of the circular plate 21 and extends into the inner cavity of the junction box cylinder body 2, and the heating rod 1 and the circular plate 21 are fully welded, so that the heating rod 1 and the junction box cylinder body 2 cannot be detachably connected.

A hole is formed in the middle of the junction box barrel body 2 or the junction box cover 3, and an inlet pipe 5 is welded at the hole; when the wiring box cover 3 is covered on the wiring box barrel body 2, the wire inlet pipe 5 is communicated with the inner cavity of the wiring box barrel body 2, and the wire inlet pipe 5 can facilitate the wire inlet of a power supply. The power cord enters the inner cavity of the junction box barrel body 2 through the wire inlet pipe 5 and then is connected with the electric connecting wire of the heating rod 1.

The junction box cover 3 is fixed on the junction box barrel body 2 through threads, a bulge 31 is arranged at the tail end (facing one side of the junction box barrel body 2) of the junction box cover 3, a cover external thread 32 is arranged on the outer surface of the bulge 31, the cover external thread 32 is matched with the junction box internal thread 22, and the junction box external thread and the cover internal thread can be in threaded connection.

An O-shaped ring 4 is used for sealing between the junction box cover 3 and the junction box cylinder body 2. The head end of the bulge 31 (the position where the bulge 31 is connected with the junction box cover 3) is grooved to form a box cover groove 33; the head end of the inner cavity of the junction box barrel 2 is milled with a barrel groove 23. The box cover groove 33 is matched with the barrel groove 23, the O-shaped ring 4 is positioned between the junction box cover 3 and the junction box barrel 2, after the junction box cover 3 is screwed into the junction box barrel 2, the box cover groove 33 and the barrel groove 23 can form a sealing cavity, and the O-shaped ring 4 is extruded into the sealing cavity. The box cover groove 33 and the cylinder body groove 23 tightly press the O-shaped ring 4, so that the sealing performance between the junction box cover 3 and the junction box cylinder body 2 is improved, and the O-shaped ring 4 can not be damaged.

The outer diameter of the junction box cover 3 is the same as that of the junction box barrel body 2, the junction box cover is sealed through the O-shaped ring 4, the flange is not required to be turned over for fixation, and the space is saved on the premise of meeting the requirement of explosion prevention.

Finally, it is also noted that the above-mentioned lists merely illustrate a few specific embodiments of the utility model. It is obvious that the utility model is not limited to the above embodiments, but that many variations are possible. All modifications which can be derived or suggested by a person skilled in the art from the disclosure of the present invention are to be considered within the scope of the utility model.

Claims

1. Novel explosion-proof heating rod that explosion-proof environment of plastic melt pump was used, its characterized in that: comprises a heating rod (1), a junction box cylinder (2), a junction box cover (3) and an O-shaped ring (4);

the junction box cover (3) is arranged on the junction box cylinder body (2), and the O-shaped ring (4) is positioned between the junction box cover (3) and the junction box cylinder body (2);

the heating rod (1) extends into the junction box barrel body (2).

2. The novel explosion-proof heating rod for the explosion-proof environment application of the plastic melt pump as claimed in claim 1, is characterized in that:

the two ends of the junction box barrel (2) at the head and the tail are opened; the junction box cover (3) is covered at the head end of the junction box barrel body (2);

a circular plate (21) is arranged at the tail end of the junction box cylinder body (2), a through hole is formed in the middle of the circular plate (21), and the head end of the heating rod (1) penetrates through the through hole of the circular plate (21) and extends into the inner cavity of the junction box cylinder body (2);

the middle of the junction box barrel body (2) or the junction box cover (3) is provided with a hole, and the hole is provided with a wire inlet pipe (5).

3. The novel explosion-proof heating rod for the explosion-proof environment application of the plastic melt pump as claimed in claim 2, wherein:

a junction box internal thread (22) is arranged inside the head end of the junction box barrel body (2);

a bulge (31) is arranged at the tail end of the junction box cover (3), a box cover external thread (32) is arranged on the outer surface of the bulge (31), the box cover external thread (32) is matched with the junction box internal thread (22), and the box cover external thread and the junction box internal thread are in threaded connection;

a box cover groove (33) is formed at the head end of the bulge (31), and a barrel groove (23) is formed at the head end of the inner cavity of the junction box barrel (2); the box cover groove (33) is matched with the cylinder groove (23); after the junction box cover (3) is screwed into the junction box barrel body (2), the box cover groove (33) and the barrel body groove (23) can form a sealing cavity, and the O-shaped ring (4) is extruded in the sealing cavity by the box cover groove (33) and the barrel body groove (23).

4. The novel explosion-proof heating rod for the application in the explosion-proof environment of the plastic melt pump as claimed in claim 3, is characterized in that:

the outer diameter of the junction box cover (3) is the same as that of the junction box barrel body (2).

5. The novel explosion-proof heating rod for the application in the explosion-proof environment of the plastic melt pump as claimed in claim 4, is characterized in that:

the heating rod (1) and the junction box barrel (2) are connected in a non-detachable mode.