CN2868857Y

CN2868857Y - Concentrated reat-supplying hot-air circulation structure of novel thermo-contraction packing machine

Info

Publication number: CN2868857Y
Application number: CN 200520019489
Authority: CN
Inventors: 陈剑清
Original assignee: Individual
Current assignee: Individual
Priority date: 2005-05-18
Filing date: 2005-05-18
Publication date: 2007-02-14
Anticipated expiration: 2015-05-18

Abstract

The utility model discloses a new hot-blast circulation structure for the central heating of the thermal shrinkable packaging machine, belonging to the plastic film thermal shrinkable packaging machine, which comprises an engine support. A furnace body is fixed on the engine support, in which a two-side vertical heating chamber is fixed whose peripheral wall is uniformly distributed with venting pores and the top is the plane air conductor and upper part is a heating chamber separated between the air conductor and the furnace body. The centre of the upper interlayer between the air conductor and the furnace body that deviates off the outlet end of the wrappage is arranged with an electric heating element group; the upper part of the draught fan is provided with an eccentric air outlet, whose lower end is arranged with an air ventilating screen the lateral part of the furnace body is provided with an air quantity adjusting valve that is matched with the air inlet of the eccentric draught fan and on the back end of the top of the furnace body is arranged with an eccentric draught fan. When working, the wind that is blown out by the eccentric draught fan blows the electric heating element group that is heated and then enters into the heating chamber and heats up the wrappage in the internal cavity of the hearth through the air conducting holes. The hot blast passes through the air ventilating screen again and the air quantity adjusting valve is adjusted to the air making orifice to realize heat-blast circulation and then realize thermal shrinkable packaging.

Description

A kind of hot air circulation structure of later-model thermal shrinking package machine central heating

Technical field

The utility model relates to the machinery that the employing plastic sheeting carries out heat shrinkable package, a kind of specifically hot air circulation structure of later-model thermal shrinking package machine central heating.

Background technology

Adopt plastic sheetings such as PVC, PE, POF that product is carried out heat shrinkable package, have attractive in appearance, novel, advantages such as cost is low, convenient transportation, protection against the tide, increase shelf life of products, be applicable to the packing of products such as light industry, food and drink, cultural goods, industrial art, printed matter, chemical and medicine industry goods, hardware appliance element.Therefore heat shrinkable package machinery industry is corresponding obtains very big development.Yet, all adopting tubular electric heating element (or far infrared electro-thermal tube) heat supply on the thermal shrinking package machine machine at present, its layout adopts tubular electric heating element to be distributed in shrinker burner hearth both sides or both sides reach the structure that distributes up and down, therefore has following shortcoming:

(1) tubular electric heating element by metal tube, be installed in the spiral resistance wire in the pipe and the crystal magnesium oxide of permeability of heat, good insulating etc. and form, therefore its heat conduction is subjected to obstruction to a certain degree, make in the body of heater heating and cooling and have thermal inertia, promptly be warmed up in the stove of prescribing a time limit in the temperature control and can continue to heat up, be cooled to the phenomenon that temperature can continue to descend again in the stove of prescribing a time limit under the temperature control.

(2) tubular electric heating element is directly installed on and can causes local directly thermal radiation in the burner hearth, can cause temperature inequality in the burner hearth under the situation of air circulation deficiency.

In a word, adopting tubular electric heating element to be directly installed on shrinker that the heat supply structure in the burner hearth has relatively high expectations to temperature homogeneity in thermostatic control and the stove, to shrink quality influence bigger, and it is higher that product shrinks reject rate.

Show from the pertinent data retrieval that comprises Chinese patent, have not yet to see and adopt that heating wire direct heating and hot air circulating system combine, as to implement the hot air circulation shrink packaging machine of central heating relevant report.

The utility model content

In order to overcome in the prior art the bad problem of temperature homogeneity in the shrinker thermostatic control and stove, the purpose of this utility model is the hot air circulation structure that a kind of later-model thermal shrinking package machine central heating will be provided.

The technical scheme that its technical matters that solves the utility model adopts is: a kind of hot air circulation structure of later-model thermal shrinking package machine central heating is characterized in that: a support is arranged, be fixed with body of heater on the support, in the center surface of support upper end load-transfer device is installed; The body of heater internal fixation has two limits vertical, and the top is the deflector shield on plane, is evenly equipped with the aperture of ventilation on the perisporium of deflector shield; The upper space that isolates between deflector shield and the body of heater is a heating chamber, and hot blast enters the body of heater inner chamber by uniform aperture and realizes heat shrinkable package work; The inclined to one side packing material exit end of the interlayer central upper portion of body of heater and deflector shield is equipped with inner electric heating element group of being made by the naked silk of nickel chromium triangle, provides thermal source by the electric heating element group, implements heat shrinkable package; Deflector shield top offers the centrifugal blower air outlet by heat shrinkable package thing exit end place; The lower end of air outlet is wind-guiding screen fixedly, and described wind-guiding screen ventilates for three-dimensional, and wherein one of close packing material Way out to being stuffy; The side of body of heater is provided with the volume damper that matches with the centrifugal blower ventilation inlet; The end face rear end of body of heater is equipped with centrifugal blower.The wind that is bloated by centrifugal blower during work is to the electric heating element group and be heated, and enter heating chamber, hole by deflector shield enters burner hearth cavity packing material is heated then hot blast again through the wind-guiding screen again, volume damper to centrifugal blower is made the air port, realize hot air circulation, thereby realize heat shrinkable package.

The beneficial effects of the utility model are: concentrate the hot air circulation method of naked silk heat supply to design because the utility model has adopted, thereby thermal inertia and direct thermal radiation that prior art exists have been overcome effectively, and the unequal problem of temperature in air circulation deficiency and the burner hearth, make in the work constant temperature reliable and stable, so guaranteed temperature required in the work, improved the yield rate of product, power consumption can also descend simultaneously.In addition, three wind-guidings of the utility model purpose made screen can prevent that not only film from being sucted by the suction of centrifugal blower, and can prevent the outer cold wind of burner hearth from directly being sucked and cause the loss of heat, thereby has further guaranteed the stability of constant temperature in the stove.Therefore, structure of the present utility model can realize the variation of matter, the purpose of reach energy-conservation, yield rate is high, easy to use and reliable.

Description of drawings

Below in conjunction with drawings and Examples the utility model is further described.

Fig. 1 is the utility model full section configuration diagram.

1 deflector shield among the figure, 2 heating chambers, 3 electric heating element groups, 4 centrifugal blowers, 5 volume dampers, 6 wind-guidings screen, 7 rollers, 8 feedways, 9 supports, 10 bodies of heater.

The specific embodiment

Embodiment 1:

See also Fig. 1, a kind of hot air circulation structure of later-model thermal shrinking package machine central heating, it is fixed with body of heater 10 by a support 9 on the support 9, and support 9 waists vertically are equipped with feedway; Body of heater 10 internal fixation have two limits vertical, and the top is the deflector shield 1 on plane, are evenly equipped with the aperture of ventilation above the both sides of deflector shield 1 reach; The upper space that isolates between deflector shield 1 and the body of heater 10 is a heating chamber 2, and hot blast enters burner hearth cavity by uniform aperture makes the shrink film heating realize the heat shrinkable package process; One end of the inclined to one side packing material outlet of the interlayer central upper portion of body of heater 10 and deflector shield 1 is equipped with the electric heating element group 3 by material such as the naked silks of nickel chromium triangle, provides thermal source by electric heating element group 3, implements heat shrinkable package; Deflector shield 1 top offers centrifugal blower 4 air outlets by an end place of heat shrinkable package thing outlet; The lower end of air outlet is wind-guiding screen 6 fixedly, and described wind-guiding screen 6 ventilates for three-dimensional, and wherein one of close packing material Way out to being stuffy; The side of body of heater 10 is provided with the volume damper 5 that matches with centrifugal blower 4 ventilation inlets; The end face rear end of body of heater 10 is equipped with centrifugal blower 4.The wind that is bloated by centrifugal blower 4 is to electric heating element group 3 and be heated, and enters heating chamber 2, carries out work by deflector shield 1 uniform hole to burner hearth cavity again, and is sucked from the air port by centrifugal blower 4 and carry out hot air circulation work, realizes heat shrinkable package.

Claims

1, a kind of hot air circulation structure of later-model thermal shrinking package machine central heating is characterized in that: a support is arranged, be fixed with body of heater on the support, in the center surface of support upper end load-transfer device is installed; Be evenly equipped with the aperture of ventilation on the perisporium of deflector shield; The upper space that isolates between deflector shield and the body of heater is a heating chamber; The inclined to one side packing material exit end of the interlayer central upper portion of body of heater and deflector shield is equipped with the electric heating element group; Deflector shield top offers the centrifugal blower air outlet by heat shrinkable package thing exit end place; The lower end of air outlet is the wind-guiding screen fixedly; The side of body of heater is provided with the volume damper that matches with the centrifugal blower ventilation inlet; The end face rear end of body of heater is equipped with centrifugal blower.

2, the hot air circulation structure of a kind of later-model thermal shrinking package machine central heating according to claim 1 is characterized in that:, described wind-guiding screen ventilates for three-dimensional, and wherein one of close packing material Way out to being stuffy.

3, the hot air circulation structure of a kind of later-model thermal shrinking package machine central heating according to claim 1 is characterized in that: described body of heater internal fixation has two limits vertical, and the top is the deflector shield on plane.

4, the hot air circulation structure of a kind of later-model thermal shrinking package machine central heating according to claim 1 is characterized in that: the electric heating element group of being made by the naked silk of nickel chromium triangle is installed in the described heating chamber.