CN108394049B - Heating method of forward-reverse flow combined multi-belt latex yarn - Google Patents

Heating method of forward-reverse flow combined multi-belt latex yarn Download PDF

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CN108394049B
CN108394049B CN201810227864.5A CN201810227864A CN108394049B CN 108394049 B CN108394049 B CN 108394049B CN 201810227864 A CN201810227864 A CN 201810227864A CN 108394049 B CN108394049 B CN 108394049B
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latex
temperature
yarn
latex yarn
belt
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CN108394049A (en
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谢炎庆
黄晓新
黄晓洁
谢丽冰
谢伟涛
谢丽娴
郑文鹏
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GUANGDONG GUOXING LATEX SILK CO Ltd
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GUANGDONG GUOXING LATEX SILK CO Ltd
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/045—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam using gas or flames
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
    • B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
    • B29C35/00—Heating, cooling or curing, e.g. crosslinking or vulcanising; Apparatus therefor
    • B29C35/02—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould
    • B29C35/04—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam
    • B29C35/06—Heating or curing, e.g. crosslinking or vulcanizing during moulding, e.g. in a mould using liquids, gas or steam for articles of indefinite length

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Thermal Sciences (AREA)
  • Heating, Cooling, Or Curing Plastics Or The Like In General (AREA)

Abstract

The invention discloses a heating method of a forward-reverse flow combined multi-belt latex yarn, which comprises the following steps: the drying or vulcanization process of the multi-belt latex yarn is carried out in a concurrent heating area or a countercurrent heating area(ii) a The concurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the reverse direction of the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature T to be controlledn AHot air enters the furnace body of the tunnel furnace along the conveying direction of the multi-belt latex yarns through the U-shaped ventilation pipe, so that the hot air and the multi-belt latex yarns are heated in a downstream manner; the countercurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature T to be controlledn BHot air enters the furnace body of the tunnel furnace along the reverse direction of the conveying direction of the multi-belt latex yarn through the U-shaped ventilation pipe, so as to perform countercurrent heating with the multi-belt latex yarn; through concurrent heating zone AnAnd a counter-current heating zone BnA waste outlet or a waste treatment device arranged at the junction of the two or more pipes discharges waste or recycles the waste.

Description

Heating method of forward-reverse flow combined multi-belt latex yarn
Technical Field
The invention relates to the technical field of heating of multi-belt latex yarns, in particular to a heating method of a multi-belt latex yarn combining forward and reverse flow.
Background
The tunnel furnace is a tunnel type mechanical device which completes heat and mass exchange tasks through heat conduction, convection and radiation. The furnace body of the tunnel furnace is generally very long, the minimum length is 6 meters, and the length is 60-80 meters. The chamber is a narrow tunnel, typically 0.8m to 1.4m wide. The tunnel can be produced continuously, the production efficiency is high, and the manpower is saved. The tunnel furnace is mainly used for industrial production and is characterized by continuous mass production. Typically rated power input >24KW, operated by full-time personnel, the accuracy of temperature control and response speed are key performance indicators. The consistency and stability of the temperature field and the flow field in the drying process of the latex yarn directly influence the quality of the latex yarn.
Disclosure of Invention
In order to solve the technical problems, the invention aims to provide a heating method of a forward-reverse flow combined multi-belt latex yarn.
The purpose of the invention is realized by the following technical scheme:
a method of heating a co-current and counter-current combined multi-ribbon latex filament, comprising:
a, drying or vulcanizing a multi-belt latex yarn in a forward flow heating area or a reverse flow heating area, wherein the forward flow heating area and the reverse flow heating area respectively comprise a plurality of belts;
b in the nth concurrent heating area AnIn the control of the temperature ofThe concurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the direction opposite to the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlled
Figure BDA0001601766090000012
Hot air enters the furnace body of the tunnel furnace along the conveying direction of the multi-belt latex yarns through the U-shaped ventilation pipe, so that the hot air and the multi-belt latex yarns are heated in a downstream manner;
c in the nth countercurrent heating zone BnIn the control of the temperature of
Figure BDA0001601766090000021
The countercurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlledHot air enters the furnace body of the tunnel furnace along the reverse direction of the conveying direction of the multi-belt latex yarn through the U-shaped ventilation pipe, so as to perform countercurrent heating with the multi-belt latex yarn;
d passing through a concurrent heating area AnAnd a counter-current heating zone BnA waste outlet or a waste treatment device arranged at the junction of the two or more pipes discharges waste or recycles the waste.
One or more embodiments of the present invention may have the following advantages over the prior art:
the method realizes multi-zone control and forward-reverse flow alternative heating, can enable the temperature change of the whole latex yarn heating process to be smoother, does not have the temperature step problem existing in the typical single forward-flow or reverse-flow multi-zone heating, and can be used in links such as drying or vulcanizing of multi-belt latex yarns.
Drawings
FIG. 1 is a flow diagram of a method for heating a co-current and counter-current combined multi-ribbon latex filament;
FIG. 2 is a graph of hot air temperature versus latex filament temperature for a typical full-forward tunnel furnace;
FIG. 3 is a graph of forward and reverse flow combined tunnel oven hot air temperature versus latex filament temperature.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in further detail with reference to the following embodiments and accompanying drawings.
As shown in fig. 1, the heating method for the multi-belt latex wire combined in the forward and reverse flow comprises the following steps:
step 10, drying or vulcanizing the multi-belt latex yarn in a forward flow heating area or a reverse flow heating area, wherein the forward flow heating area and the reverse flow heating area respectively comprise a plurality of belts;
step 20 in the nth concurrent heating zone AnIn the control of the temperature of
Figure BDA0001601766090000023
The concurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the direction opposite to the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlled
Figure BDA0001601766090000024
Hot air enters the furnace body of the tunnel furnace along the conveying direction of the multi-belt latex yarns through the U-shaped ventilation pipe, so that the hot air and the multi-belt latex yarns are heated in a downstream manner;
step 30 in the nth countercurrent heating zone BnIn the control of the temperature of
Figure BDA0001601766090000025
The countercurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlled
Figure BDA0001601766090000031
Hot air enters the furnace body of the tunnel furnace along the reverse direction of the conveying direction of the multi-belt latex yarn through the U-shaped ventilation pipe, so as to perform countercurrent heating with the multi-belt latex yarn;
step 40 heating zone A via concurrent flownAnd a counter-current heating zone BnA waste outlet or a waste treatment device arranged at the junction of the two or more pipes discharges waste or recycles the waste.
In the above step 10, the downstream heating area is A1、A2…An…ANAnd concurrent heating is adopted in the concurrent heating area; the countercurrent heating zone is B1、B2…Bn…BNAnd countercurrent heating is employed in the countercurrent heating zone.
In the step 20, the nth downstream heating zone AnIn the method, the temperature of the latex yarn at the entrance of the tunnel furnace is set as
Figure BDA0001601766090000032
At an outlet temperature of
Figure BDA0001601766090000033
The temperature at the air outlet of the tunnel furnace is
Figure BDA0001601766090000034
The diameter of the latex yarn is d, the number of the latex yarn bands is i, the number of the latex yarn bands is k, the density of the latex is rho, and the specific heat capacity of the latex yarnC, the number of subareas N, the total length L of the production line and the surface convection heat transfer coefficient are h, the latex filaments absorb heat
Figure BDA0001601766090000035
Comprises the following steps:
Figure BDA0001601766090000036
its heat flux density in a tunnel furnace
Figure BDA0001601766090000037
Coefficient of convective heat transfer
Figure BDA0001601766090000038
Comprises the following steps:
Figure BDA0001601766090000039
Figure BDA00016017660900000310
in the step 30, the n-th countercurrent heating zone BnIn the method, the temperature of the latex yarn at the entrance of the tunnel furnace is set as
Figure BDA00016017660900000311
At an outlet temperature of
Figure BDA00016017660900000312
The temperature at the air outlet of the tunnel furnace is
Figure BDA00016017660900000313
The diameter of the latex yarn is d, the number of the latex yarn belts is i, the number of the latex yarn belts is k, the density of the latex is rho, the specific heat capacity of the latex yarn is C, the number of the subareas is N, the total length L of the production line and the surface convection heat transfer coefficient are h, and then the latex yarn absorbs heatComprises the following steps:
its heat flux density in a tunnel furnace
Figure BDA0001601766090000041
Coefficient of convective heat transfer
Figure BDA0001601766090000042
Comprises the following steps:
Figure BDA0001601766090000043
Figure BDA0001601766090000044
as shown in fig. 2 and 3, in the process of drying or vulcanizing the multi-belt latex yarn, the multi-zone mode has the characteristic of high temperature control precision, and can realize accurate temperature control, and the forward-reverse flow heating alternating mode can make the temperature change of the whole latex yarn heating line smoother, and the temperature step problem existing in the typical single forward-flow or reverse-flow multi-zone heating process can not occur; while allowing the forward flow outlet and the reverse flow outlet to be located at the same location.
Although the embodiments of the present invention have been described above, the above descriptions are only for the convenience of understanding the present invention, and are not intended to limit the present invention. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims.

Claims (2)

1. A method of heating a co-current and counter-current combined multi-ribbon latex filament, the method comprising:
a, drying or vulcanizing a multi-belt latex yarn in a forward flow heating area or a reverse flow heating area, wherein the forward flow heating area and the reverse flow heating area respectively comprise a plurality of belts;
b in the nth concurrent heating area AnIn the control of the temperature of
Figure FDA0002233647330000011
The concurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the direction opposite to the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlled
Figure FDA0002233647330000012
Hot air enters the furnace body of the tunnel furnace along the conveying direction of the multi-belt latex yarns through the U-shaped ventilation pipe, so that the hot air and the multi-belt latex yarns are heated in a downstream manner;
c in the nth countercurrent heating zone BnIn the control of the temperature of
Figure FDA0002233647330000013
The countercurrent heating process comprises the following steps: the fan drives air to enter the oil heat exchanger along the conveying direction of the multi-belt latex yarn, and the air exchanges heat with high-temperature heat conduction oil to reach the temperature to be controlled
Figure FDA0002233647330000014
Hot air enters the furnace body of the tunnel furnace along the reverse direction of the conveying direction of the multi-belt latex yarn through the U-shaped ventilation pipe, so as to perform countercurrent heating with the multi-belt latex yarn;
d passing through a concurrent heating area AnAnd a counter-current heating zone BnA waste outlet or a waste treatment device arranged at the junction of the two or more than two pipes discharges waste or wastes are recycled;
in the step B, in the nth concurrent heating area AnIn the method, the temperature of the latex yarn at the entrance of the tunnel furnace is set as
Figure FDA0002233647330000015
At an outlet temperature of
Figure FDA0002233647330000016
The temperature at the air outlet of the tunnel furnace is
Figure FDA0002233647330000017
The diameter of the latex yarn is d, the number of the latex yarn belts is i, the number of the latex yarn belts is k, the density of the latex is rho, the specific heat capacity of the latex yarn is C, the number of the subareas is N, the total length L of the production line and the surface convection heat transfer coefficient are h, and then the latex yarn absorbs heat
Figure FDA0002233647330000018
Comprises the following steps:
Figure FDA0002233647330000019
its heat flux density in a tunnel furnace
Figure FDA00022336473300000110
Coefficient of convective heat transfer
Figure FDA00022336473300000111
Comprises the following steps:
Figure FDA00022336473300000113
in the step C, the n-th countercurrent heating zone BnIn the method, the temperature of the latex yarn at the entrance of the tunnel furnace is set asAt an outlet temperature of
Figure FDA00022336473300000115
The temperature at the air outlet of the tunnel furnace is
Figure FDA00022336473300000116
The diameter of the latex yarn is d, the number of the latex yarn belts is i, the number of the latex yarn belts is k, the density of the latex is rho, the specific heat capacity of the latex yarn is C, the number of the subareas is N, the total length L of the production line and the surface convection heat transfer coefficient are h, and then the latex yarn absorbs heat
Figure FDA0002233647330000021
Comprises the following steps:
Figure FDA0002233647330000022
its heat flux density in a tunnel furnace
Figure FDA0002233647330000023
Coefficient of convective heat transfer
Figure FDA0002233647330000024
Comprises the following steps:
Figure FDA0002233647330000025
Figure FDA0002233647330000026
2. the co-current and counter-current combined multi-ribbon latex filament heating method of claim 1, wherein the co-current outlet in the co-current heating zone and the counter-current outlet in the counter-current heating zone are co-located.
CN201810227864.5A 2018-03-20 2018-03-20 Heating method of forward-reverse flow combined multi-belt latex yarn Active CN108394049B (en)

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2745011Y (en) * 2004-09-04 2005-12-07 李超训 Thermostatic hot air apparatus
CN106222765A (en) * 2016-08-15 2016-12-14 广东国兴乳胶丝有限公司 A kind of heat setting formula rubber latex thread production method

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN2745011Y (en) * 2004-09-04 2005-12-07 李超训 Thermostatic hot air apparatus
CN106222765A (en) * 2016-08-15 2016-12-14 广东国兴乳胶丝有限公司 A kind of heat setting formula rubber latex thread production method

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Denomination of invention: A heating method of multi ribbon latex filament by combination of upstream and downstream

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