CN2728924Y

CN2728924Y - Energy-saving steam contraction machine

Info

Publication number: CN2728924Y
Application number: CN 200420074650
Authority: CN
Inventors: 赵贵平
Original assignee: Individual
Current assignee: Individual
Priority date: 2004-09-13
Filing date: 2004-09-13
Publication date: 2005-09-28
Anticipated expiration: 2014-09-13

Abstract

The utility model relates to an energy-saving steam contraction machine which can proceed the thermal contraction by heating the plastic film sheathed on the surface of articles. The main features of the utility model are that the interior of the cavity of the thermal contraction chamber is provided a thermal circulation insulating hood additionally, and two layers of steam effusers are disposed in the hood respectively at the top and the bottom. The upper part of the cavity of the thermal contraction chamber is cone-shaped. The top end of the cone is the steam collecting opening. And the two sides of the cone bottom are connected with the steam isolating blocking plates which form an exothermic gas flowing over area with the thermal circulation insulating hood and thus constitute a steam ring current channel. With the contraction machine, the same contraction effect can be achieved with only 0. 1Mp steam pressure. Compared with the prior art, the utility model has the features of energy conservation, low cosumption, even heating constraction, good thermal contraction effec, hign rate of finished products, stable quality, etc.

Description

Novel energy-conserving steam shrinker

Technical field

The utility model belongs to the packaging facilities technical field, be a kind of by the heating plastic sheeting is sleeved on the novel energy-conserving steam shrinker that carries out thermal contraction on the article surface.

Background technology

With the thermoplastic film package goods is the thermoplastic property that utilizes plastic sheeting, its plastic sheeting is enclosed within on the article and under the effect of hot air produces thermal contraction, thereby make film be fitted in a kind of packing method on the article surface tightly.In existing technology, what packaging films such as bottle subsides were carried out that heat shrink usually adopts is the steam shrinker, the thermal contraction chamber of this machine is rectangular-shaped single wall cavity, the small amount of steam jet pipe that the chamber internal upper part is equipped with, because the pyrocondensation cavity space is big, and with the operate outside chamber only a wall every, therefore, the housing internal-external temperature difference is big, and heat insulation effect is poor.And to reach the normal contraction effect, required steam pressure generally can more than 0.2Mp.In addition, because of the behavior of structure of this machine is limit, the steam part of ejection is discharged from the top steam drain of chamber, another part then directly is dispersed into operating room outside the chamber from the bottle import and export, causes the steam fog of production environment bigger, the humidity height, ground condensation ponding is more, the present situation that waste of heat is big.For this reason, under the situation that guarantees the heat shrink temperature, need constantly toward thermal contraction chamber delivering vapor, not only cause the steam supply anxiety, and because the steam fog that sheds from the pyrocondensation chamber is too big, make the operating personal can't be near the import and export of pyrocondensation chamber, and contraction process can not direct viewing, therefore, be difficult to guarantee and control the contraction quality of cover molding product.Secondly, for the higher big bottle of bottle, the vapour amount of bottom is few, temperature is low, and the bottle inequality of being heated has also influenced bottle thus and pasted the whole structure of heat shrink.

The utility model content

The purpose of this utility model provides a kind ofly can improve production environment, reduces waste of heat, improves the novel energy-conserving steam shrinker of heat shrink quality and contractive effect.

For realizing that the technical scheme that the purpose of this utility model is taked is: a thermal circulation heat protection screen is set in the cavity of this machine pyrocondensation chamber, be furnished with two-layer steam jet up and down in the cover, the top of pyrocondensation chamber body is cone-shaped, pyramid tip is the collection steam ports, position, both sides, cone lower end is connected with gas and isolates baffle plate, and form the zone that exothermal gas flows through between the thermal circulation heat protection screen, and constitute the gas circulation channel thus.

Described steam jet is made up of the vertical steam jet pipe and the transverse jet steam pipe that are distributed in upper strata admission pipe, the lower floor's admission pipe around the thermal circulation heat protection screen and be connected symmetric arrangement on the admission pipe and have a jet apertures, wherein, upper and lower layer air inlet pipe is connected with steam conveying pipe respectively, is provided with at least more than 8 with the upper strata vertical steam jet pipe of admission pipe bonded assembly.

The novel energy-conserving steam shrinker of making according to such scheme, its reasonable in design, easy and simple to handle, owing in the pyrocondensation chamber, be provided with the thermal circulation heat protection screen, make thermal contraction space and outside production environment form two gradient temperature difference, the volume of actual contraction place (high-temperature zone) greatly reduces (be about original 1/4), and the temperature difference also reduces half, so energy-saving effect is fairly obvious.Especially when carrying out the thermal contraction of differing heights bottle, can adopt the top steam supply or the mode of steam supply simultaneously up and down according to actual needs respectively, thereby actv. has solved the present situation of the thermal contraction inequality that big bottle produces owing to the difference of heat supply temperature.This machine is under the operating mode of normal contraction effect, and steam pressure only needs 0.1Mp to get final product, because the machine internal gas pressure is lower, so the contraction situation is importing and exporting and can seeing very clearly, to the stable vital function that played of contraction quality; Secondly, outside shrinker, almost can't see the existence of steam fog, production environment is greatly improved, and alleviated the contradiction of producing the steam supply anxiety.Compared with prior art, these facility have energy-saving and cost-reducing, and heat shrink is even, thermal contraction is effective, characteristics such as finished product rate height, steady quality.

Description of drawings

Fig. 1 is a structural representation of the present utility model.

Fig. 2 is an A-A section-drawing among Fig. 1.

The specific embodiment

Referring to Fig. 1, Fig. 2, novel energy-conserving steam shrinker of the present utility model has a pyrocondensation chamber 1, sets up a thermal circulation heat protection screen 2 in the cavity of pyrocondensation chamber 1, can play the effect of heat preservation energy-saving.Be furnished with two-layer steam jet up and down in the cover, steam jet is made up of the vertical steam jet pipe 6 and the transverse jet steam pipe 5 that are distributed in upper strata admission pipe 3, the lower floor's admission pipe 4 around the thermal circulation heat protection screen 2 and be connected symmetric arrangement on the admission pipe and have a jet apertures, wherein, upper and lower layer

air inlet pipe

3,4 is connected (see figure 2) with steam conveying pipe 9 respectively, at least be provided with more than 8 with the vertical steam jet pipe 6 of upper strata admission pipe 3 bonded assemblys, plastic packaging film carried out even heat shrink by steam jet.In this case, the top of pyrocondensation chamber 1 cavity is cone-shaped, and pyramid tip is connected with gas and isolates baffle plate 7 for collection steam ports 8, position, both sides, cone lower end, in order to reduce the effusion of heat and distributing of gas.The effect of the existing separation gas of this baffle plate does not influence passing through of article again.Gas is isolated zone that exothermal gas flows through of formation between baffle plate 7 and the thermal circulation heat protection screen 2, and constitute the gas circulation channel thus, air-flow is discharged through Ji Qikouchu more smoothly, the vapor evolution of having avoided ejection effectively is to working environment, the staff promptly can be observed bottle by import and export and pastes the situation that the packing Membrane cover is moulded in the process of bottle 10 thermal contractions.And, adjust the running velocity of bottle belt conveyor 11 or the pressure of steam at any time according to the thermal contraction operating mode that cover is moulded, make the thermal contraction operating mode reach optimum regime.

The principle of work of this machine: steam passes through steam conveying pipe 9 respectively from upper and lower layer admission pipe, enter thermal circulation heat protection screen 2, and, the cover of sending into by belt conveyor 11 in the thermal circulation heat protection screen 2 is moulded bottle 10 heating by the jet pipe ejection, finish the thermal contraction work that cover is moulded.The gas of ejection is discharged by the bottle import and export of thermal circulation heat protection screen 2 bottoms and heat protection screen, heat protection screen is carried out discharged by the collection steam ports 8 of top, pyrocondensation chamber cone segments, and discharge outdoor through gas exhaust duct after residual heat insulation utilizes once more through the gas circulation channel.

Claims

1, a kind of energy-saving steam shrinker, has the pyrocondensation chamber, it is characterized in that: a thermal circulation heat protection screen is set in the cavity of pyrocondensation chamber, be furnished with two-layer steam jet up and down in the cover, the top of pyrocondensation chamber body is cone-shaped, and pyramid tip is connected with gas and isolates baffle plate for collection steam ports, position, both sides, cone lower end, and form the zone that exothermal gas flows through between the thermal circulation heat protection screen, and constitute the gas circulation channel thus.

2, energy-saving steam shrinker according to claim 1, it is characterized in that: described steam jet is made up of the vertical steam jet pipe and the transverse jet steam pipe that are distributed in upper strata admission pipe, the lower floor's admission pipe around the thermal circulation heat protection screen and be connected symmetric arrangement on the admission pipe and have a jet apertures, wherein, upper and lower layer air inlet pipe is connected with steam conveying pipe respectively, is provided with at least more than 8 with the upper strata vertical steam jet pipe of admission pipe bonded assembly.