CN211441165U

CN211441165U - Heating barrel

Info

Publication number: CN211441165U
Application number: CN201921655735.2U
Authority: CN
Inventors: 高金明; 钱玉兵
Original assignee: Shenzhen Dadu Industry Co Ltd
Current assignee: Shenzhen Dadu Industry Co Ltd
Priority date: 2019-09-30
Filing date: 2019-09-30
Publication date: 2020-09-08
Anticipated expiration: 2029-09-30

Abstract

The utility model relates to the field of heating equipment of expanding machines, in particular to a heating gun barrel, which comprises a gun barrel shell, a silicon carbide inner barrel, a high-quality resistance wire wound on the silicon carbide inner barrel, flange plates arranged at two ends of the gun barrel, a first junction box and a second junction box which are arranged at one side of the shell in parallel, and a thermocouple hole arranged between the first junction box and the second junction box and positioned at the middle position of the gun barrel; the silicon carbide inner cylinder and the high-quality resistance wire are called as a silicon carbide far-infrared heating cylinder core; the heating gun barrel can be connected by flange plates and bolts, a plurality of heating gun barrels are combined and freely installed, according to the technical scheme, the expansion pipe passes through a silicon carbide far infrared heating barrel core consisting of a silicon carbide barrel and a high-quality resistance wire, the temperature of the heating gun barrel monitored by a thermocouple is stable, the inner wall is smooth and is not easy to stick to the wall, and the product yield is high; the performance is stable, and the failure rate is low; frequent disassembly of the apparatus to service the cartridge heater is not required.

Description

Heating barrel

Technical Field

The utility model relates to an expander firing equipment field especially relates to a heating barrel.

Background

Heating barrel, expansion equipment for heat-shrinkable tubing industry: the upper surface of the dry expanding machine is a main core heating component of the dry expanding machine, and the expansion of the heat-shrinkable sleeve by heating is a necessary link for producing the heat-shrinkable sleeve.

The heating device is mainly a glycerol heating device, glycerol is used as a heating medium, and the glycerol is selected as the heating medium for two main reasons, namely, the glycerol is dissolved in water and is convenient to clean, the decomposition temperature of the glycerol is high and reaches more than 200 ℃, and the expansion temperature of the heat-shrinkable tube is 120 ℃ to 150 ℃, which is far lower than the decomposition temperature of the glycerol. However, during the expansion process, water is inevitably mixed into the glycerol, the decomposition temperature is reduced, a large amount of smoke is easily generated, the environment and equipment are polluted, and the physical and psychological health of operators is not facilitated. In addition, glycerin attached to the surface of the heat-shrinkable tube needs to be washed by water, so that a large amount of water resources are wasted, and the glycerin enters water to pollute the water quality and is not beneficial to environmental protection; a few electric heating devices, generally mica heaters, have low heating efficiency and waste energy

The existing electric heating cylinder uses a stainless steel inner container and a resistance wire, and has the disadvantages that: heating by heat conduction, unstable temperature, easy sticking of the sleeve to the wall, high product reject ratio and the like

SUMMERY OF THE UTILITY MODEL

The utility model provides a heating barrel solves above-mentioned technical problem.

A heating gun barrel is characterized by comprising a gun barrel shell, a silicon carbide inner barrel, a resistance wire wound on the silicon carbide inner barrel, flanges arranged at two ends of the gun barrel shell, a first junction box and a second junction box arranged at one side of the shell, and a thermocouple hole arranged on the gun barrel shell; the silicon carbide inner cylinder and the resistance wire form a silicon carbide far infrared heating cylinder core.

Preferably, the inner diameter of the silicon carbide inner cylinder is 100mm-140mm, and the inner wall of the silicon carbide inner cylinder is smooth; the total height of the barrel shell comprising the flanges at the two ends is 680mm-720 mm.

Preferably, the flange is perpendicular to the barrel casing.

Preferably, the heating gun barrel can be connected by flange bolts, and a plurality of heating gun barrels are combined and freely installed.

Preferably, a heat insulation material is filled between the gun barrel shell and the silicon carbide inner barrel.

Compared with the prior art, the beneficial effects of the utility model are as follows:

according to the technical scheme, the expansion tube passes through the silicon carbide far-infrared heating barrel core consisting of the silicon carbide barrel and the high-quality resistance wire, the temperature of the heating barrel monitored by the thermocouple is stable, the inner wall is smooth and is not easy to stick to the wall, and the product yield is high; the performance is stable, and the failure rate is low; frequent disassembly of the apparatus to service the cartridge heater is not required.

Drawings

Fig. 1 is an overall schematic view of a heating barrel according to the present invention;

reference numerals: 1 gun barrel shell, 2 silicon carbide inner barrel, 3 resistance wire, 4 flange, 51 first junction box, 52 second junction box and 6 thermocouple holes.

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.

Referring to fig. 1, a heating gun barrel is characterized by comprising a gun barrel shell 1, a silicon carbide inner barrel 2, a resistance wire 3 wound on the silicon carbide inner barrel 2, flanges 4 arranged at two ends of the gun barrel shell 1, a first junction box 51 and a second junction box 52 arranged at one side of the shell, and a thermocouple hole 6 arranged on the gun barrel shell 1; the silicon carbide inner barrel 2 and the resistance wire 3 form a silicon carbide far infrared heating barrel core; preferably, the flange 4 is perpendicular to the barrel housing 1;

in the embodiment of the utility model, the inner diameter of the silicon carbide inner cylinder 2 is 120mm, and the inner wall of the silicon carbide inner cylinder 2 is smooth, so that the expanding pipe 11 is not easy to stick to the wall; the total height of the single barrel containing the flanges 4 at the two ends is 700 mm; the gun barrel shell 1 is made of a 2mm steel plate, the flange plate 4 is made of a 10mm thick steel material, the junction boxes arranged on one side of the gun barrel shell in parallel are convenient to install in a wiring mode, the thermocouples can also detect the temperature conditions in the heating barrel core and are located in the middle of the gun barrel shell 1, and the thermocouple holes 6 between the first junction box and the second junction box are used for placing thermocouples for detecting the temperature.

Preferably, the heating gun barrel can be connected by a flange 4 through bolts, and a plurality of heating gun barrels are combined and freely installed; preferably, a heat insulation material 11 is filled between the gun barrel shell 1 and the silicon carbide inner cylinder 2. The filled thermal insulation material 10 can better preserve heat, is temperature stable, and the expansion pipe is heated more uniformly.

The above-mentioned embodiments, further detailed description of the objects, technical solutions and advantages of the present invention, it should be understood that the above description is only the embodiments of the present invention, and is not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements, etc. made within the spirit and principle of the present invention should be included in the scope of the present invention.

Claims

1. A heating gun barrel is characterized by comprising a gun barrel shell (1), a silicon carbide inner barrel (2), a resistance wire (3) wound on the silicon carbide inner barrel (2), flange plates (4) arranged at two ends of the gun barrel shell (1), a first junction box (51) and a second junction box (52) arranged at one side of the shell, and a thermocouple hole (6) arranged on the gun barrel shell (1); the silicon carbide inner cylinder (2) and the resistance wire (3) form a silicon carbide far infrared heating cylinder core.

2. A heated barrel according to claim 1, wherein the inner diameter of the inner silicon carbide barrel (2) is 100mm to 140mm, and the inner wall of the inner silicon carbide barrel (2) is smooth; the total height of the gun barrel shell (1) comprising the flanges (4) at two ends is 680mm-720 mm.

3. A heated barrel according to claim 1, wherein the flange (4) is perpendicular to the barrel casing (1).

4. A heated barrel according to claim 1, characterised in that the heated barrel is bolted by flanges (4), in multiple groups, freely mounted.

5. A heated barrel according to claim 1, characterised in that a thermal insulation material (11) is filled between the barrel casing (1) and the silicon carbide inner barrel (2).