Explosion-proof efficient heating ring

Abstract

The utility model relates to an explosion-proof high-efficiency heating ring, which comprises a shell, fixing plates arranged at two ends of the shell, an explosion-proof junction box arranged on the back surface of the shell, a wire outlet arranged on one side surface of the explosion-proof junction box, an explosion-proof shell connected to the inner surface of the shell through glue, and a controller arranged on the outer surface of the explosion-proof shell, a through groove is formed in one side face of the shell, a controller is arranged at the through groove, an alarm is arranged at the top of the controller, and a plurality of temperature sensors are arranged on the inner surface of the anti-explosion shell; in the using process of the heating ring, the temperature sensor detects the temperature of a certain position of the heater in real time, and when the temperature of the certain position rises, the controller enables the alarm to flicker and starts the small telescopic air cylinder at the same time, so that an insulating sheet is placed at a contact, connection between an electric wire and a wiring wire column is broken, and the electric wire is prevented from being damaged. Therefore, the power supply of the heating ring is turned off, and explosion of the heating ring is prevented.

Description

Technical Field

[0001] The utility model relates to the technical field of heating coils, in particular to an explosion-proof high-efficiency heating coil. Background Art

[0002] Injection molding machines usually use PE injection molds. Currently, the heating method for PE molds is generally a heating ring with ceramic or mica on the surface. For PE solid wall pipe molds, especially large-diameter PE pipe molds, in order to heat more evenly and withstand a larger heating power, ceramic heating rings are generally used.

[0003] China's authorized utility model disclosure (announcement) number: CN204844764U A high-efficiency thermal insulation heating ring, including a cylindrical shell, an annular groove is provided on the inner wall of the shell, a plurality of infrared electric heating tubes are arranged along the axial direction of the shell, and an insulation structure is provided on the inner side wall of the shell, the insulation structure includes a reflecting sleeve formed by two layers of glass fiber aluminum foil cloth, the reflecting sleeve is provided with two layers of shaped linings formed according to the shape of the inner side wall of the shell, and an insulation layer is coated between the two shaped linings, wherein the aluminum foil surfaces of the glass fiber aluminum foil cloth in the reflecting sleeve are all arranged toward the infrared electric heating tubes.

[0004] However, the heating coil of the above prior art is protected by the double protection of the shaped lining and the reflective sleeve to prevent the aerogel from being damaged, avoid powdering and affecting the thermal insulation performance, and extend the service life. In addition, the aluminum foil surface of the glass fiber aluminum foil cloth is arranged toward the infrared electric heating tube, and the thermal insulation effect is better. However, if the temperature of the heating coil is too high during the heating process, it will cause an explosion, reducing work efficiency. Utility Model Content

[0005] The purpose of the utility model is to provide an explosion-proof high-efficiency heating coil to solve the problems raised in the above background technology.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] An explosion-proof high-efficiency heating coil comprises a shell, fixing plates are arranged at both ends of the shell, an explosion-proof junction box is arranged on the back of the shell, a wire outlet is arranged on one side of the explosion-proof junction box, wires are arranged in the wire outlet, an inner surface of the shell is connected to an explosion-proof shell by glue, a controller is arranged on the outer surface of the explosion-proof shell, a through groove is opened on one side of the shell, a controller is arranged at the through groove, an alarm is arranged on the top of the controller, and a plurality of temperature sensors are arranged on the inner surface of the explosion-proof shell;

[0008] An inner cavity is provided inside the explosion-proof junction box, and a wiring conductor post is arranged on the back of the inner cavity. The wiring conductor post is an end point of the wire, and the wiring conductor post is connected to the break point of the wire through a contact.

[0009] Preferably, through holes are provided on the top and bottom of the two fixing plates, and fixing bolts are provided between the through holes on the same horizontal plane.

[0010] Preferably, several of the temperature sensors are electrically connected to the controller.

[0011] Preferably, a small telescopic cylinder is arranged at the top center of the explosion-proof junction box, the bottom of the small telescopic cylinder passes through the explosion-proof junction box, the bottom of the small telescopic cylinder is located inside the explosion-proof telescopic cylinder, and an insulating sheet is arranged at the bottom of the small telescopic cylinder, and the insulating sheet is located above the contact.

[0012] Preferably, a maintenance window is provided on one side of the explosion-proof junction box.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses an explosion-proof high-efficiency heating coil. An explosion-proof shell is arranged on the inner surface of the high-efficiency heating coil in the prior art, a controller is arranged on the outer surface of the explosion-proof shell, and a plurality of temperature sensors are arranged on the inner surface of the explosion-proof shell. The temperature sensor is electrically connected to the explosion-proof shell. During the use of the heating coil, the temperature sensor will detect the temperature of a certain place of the heater in real time. When the temperature of a certain place rises, the controller will make the alarm flash. At the same time, the controller will start a small telescopic cylinder to place an insulating sheet at the contact point, thereby breaking the connection between the electric wire and the wiring conductor post, and then turning off the power supply of the heating coil to prevent the explosion of the heating coil. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of one side of the utility model;

[0016] Figure 2 This is a schematic diagram of the overall structure of the other side of the utility model

[0017] Figure 3 This is a schematic diagram of the internal structure of the explosion-proof junction box of the utility model.

[0018] In the figure: 1. Shell; 2. Fixing bolts; 3. Fixing plate; 4. Explosion-proof junction box; 5. Wire outlet; 6. Controller; 7. Explosion-proof shell; 8. Temperature sensor; 9. Alarm; 10. Wires; 11. Maintenance window; 12. Wiring wire post; 13. Small telescopic cylinder; 14. Insulating sheet; 15. Contact. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] In the description of the present invention, it should be noted that the terms "vertical", "up", "down", "horizontal", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply 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.

[0021] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0022] See also Figure 1-3 , the utility model provides a technical solution:

[0023] An explosion-proof high-efficiency heating coil comprises a shell 1, fixing plates 3 are arranged at both ends of the shell 1, an explosion-proof junction box 4 is arranged on the back of the shell 1, a wire outlet 5 is arranged on one side of the explosion-proof junction box 4, a wire 10 is arranged in the wire outlet 5, an explosion-proof shell 7 is connected to the inner surface of the shell 1 by glue, a controller 6 is arranged on the outer surface of the explosion-proof shell 7, a through groove is opened on one side of the shell 1, the controller 6 is arranged at the through groove, an alarm 9 is arranged on the top of the controller 6, and a plurality of temperature sensors 8 are arranged on the inner surface of the explosion-proof shell 7;

[0024] The explosion-proof junction box 4 has an inner cavity, and a wiring post 12 is disposed on the back of the inner cavity. The wiring post 12 is an end point of the wire 10 , and the wiring post 12 is connected to the break point of the wire 10 via a contact 15 .

[0025] Furthermore, through holes are provided at the top and bottom of the two fixing plates 3 , and fixing bolts 2 are provided between the through holes on the same horizontal plane.

[0026] Furthermore, a plurality of temperature sensors 8 are electrically connected to the controller 6 .

[0027] Furthermore, a small telescopic cylinder 13 is arranged at the top center of the explosion-proof junction box 4, the bottom of the small telescopic cylinder 13 passes through the explosion-proof junction box 4, the bottom of the small telescopic cylinder 13 is located inside the explosion-proof telescopic cylinder 13, and an insulating sheet 14 is arranged at the bottom of the small telescopic cylinder 13, and the insulating sheet 14 is located above the contact 15.

[0028] Furthermore, a maintenance window 11 is provided on one side of the explosion-proof junction box 4 .

[0029] Working principle: The utility model is provided with an explosion-proof shell 7 on the inner surface of the high-efficiency heating coil of the prior art, and a controller 6 is provided on the outer surface of the explosion-proof shell 7. A plurality of temperature sensors 8 are provided on the inner surface of the explosion-proof shell 7, and the temperature sensor 8 is electrically connected to the explosion-proof shell 7. During the use of the heating coil, the temperature sensor 8 will detect the temperature of a certain place of the heater in real time. When a heating wire inside the heating coil is short-circuited, the temperature at a certain place will rise. After the temperature sensor 8 at a certain place transmits the temperature at this place to the controller 6, the controller 6 makes the alarm 9 flash, and at the same time the controller 6 will start the small telescopic cylinder 13, thereby placing the insulating sheet 14 at the contact point, thereby breaking the connection between the electric wire 10 and the terminal wire post 12, and then the power supply of the heating coil is turned off to prevent the explosion of the heating coil.

[0030] When the maintenance personnel find that the alarm 9 is flashing, they immediately come to the heating coil here. After the heating coil is repaired and the problem is solved, the end of the wire 10 is connected to the wiring wire post 12 again from the maintenance window 11, thereby completing the maintenance.

[0031] It should be noted that the wiring conductive post 12 in the explosion-proof junction box 4 is a wiring conductive post 12 with an insulating sealing pad, the wiring conductive post 12 is connected to the end of the wire 10, and the wiring conductive post 12 is electrically connected to the heating wire inside the shell 1.

[0032] The electric wire 10 is a high temperature resistant insulated wire.

[0033] The other end of the electric wire 10 passes through the wire outlet 5, so as to facilitate the connection of an external power source.

[0034] It should be noted that the controller 6 is electrically connected to the small telescopic cylinder 13, which is a prior art, and its specific circuit connection structure and circuit diagram will not be described in detail here. In addition, a backup power supply is provided inside the controller 6. When the wire 10 is disconnected, the controller will also use the backup power supply to recover the small telescopic cylinder 13 after maintenance is completed and determine which temperature sensor 8 generates an abnormal signal, thereby facilitating maintenance personnel to carry out maintenance.

[0035] Finally, it should be noted that the connection between the temperature sensors 8 and the controller 6 is a prior art, and its circuit connection structure and circuit diagram will not be described in detail here.

[0036] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An explosion-proof high-efficiency heating coil, comprising a housing (1), characterized in that: The two ends of the shell (1) are provided with fixing plates (3); the back of the shell (1) is provided with an explosion-proof junction box (4); a side of the explosion-proof junction box (4) is provided with a wire outlet (5); a wire (10) is provided in the wire outlet (5); the inner surface of the shell (1) is connected to an explosion-proof shell (7) by glue; the outer surface of the explosion-proof shell (7) is provided with a controller (6); a side of the shell (1) is provided with a through groove; the controller (6) is provided at the through groove; an alarm (9) is provided on the top of the controller (6); and the inner surface of the explosion-proof shell (7) is provided with a plurality of temperature sensors (8); The explosion-proof junction box (4) has an inner cavity, and a wiring conductor post (12) is arranged on the back of the inner cavity. The wiring conductor post (12) is an end point of the electric wire (10), and the wiring conductor post (12) is connected to the break point of the electric wire (10) via a contact (15).

2. The explosion-proof high-efficiency heating coil according to claim 1, characterized in that: Through holes are provided at the top and bottom of the two fixing plates (3), and fixing bolts (2) are provided between the through holes on the same horizontal plane.

3. The explosion-proof high-efficiency heating coil according to claim 1, characterized in that: Several of the temperature sensors (8) are electrically connected to the controller (6).

4. The explosion-proof high-efficiency heating coil according to claim 1, characterized in that: A small telescopic cylinder (13) is arranged at the top center of the explosion-proof junction box (4), the bottom of the small telescopic cylinder (13) passes through the explosion-proof junction box (4), the bottom of the small telescopic cylinder (13) is located inside the explosion-proof telescopic cylinder (13), and an insulating sheet (14) is arranged at the bottom of the small telescopic cylinder (13), and the insulating sheet (14) is located above the contact (15).

5. The explosion-proof high-efficiency heating coil according to claim 1, characterized in that: A maintenance window (11) is provided on one side of the explosion-proof junction box (4).

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