CN112519176B - A continuous extrusion type rubber encapsulating machine barrel heating device and heating method - Google Patents
A continuous extrusion type rubber encapsulating machine barrel heating device and heating method Download PDFInfo
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- CN112519176B CN112519176B CN202011573816.5A CN202011573816A CN112519176B CN 112519176 B CN112519176 B CN 112519176B CN 202011573816 A CN202011573816 A CN 202011573816A CN 112519176 B CN112519176 B CN 112519176B
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/15—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor incorporating preformed parts or layers, e.g. extrusion moulding around inserts
- B29C48/154—Coating solid articles, i.e. non-hollow articles
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/275—Recovery or reuse of energy or materials
- B29C48/276—Recovery or reuse of energy or materials of energy
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/83—Heating or cooling the cylinders
- B29C48/832—Heating
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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
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/92—Measuring, controlling or regulating
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92504—Controlled parameter
- B29C2948/92704—Temperature
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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
- B29C2948/00—Indexing scheme relating to extrusion moulding
- B29C2948/92—Measuring, controlling or regulating
- B29C2948/92819—Location or phase of control
- B29C2948/92857—Extrusion unit
- B29C2948/92876—Feeding, melting, plasticising or pumping zones, e.g. the melt itself
- B29C2948/92895—Barrel or housing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29L—INDEXING SCHEME ASSOCIATED WITH SUBCLASS B29C, RELATING TO PARTICULAR ARTICLES
- B29L2031/00—Other particular articles
- B29L2031/32—Wheels, pinions, pulleys, castors or rollers, Rims
- B29L2031/324—Rollers or cylinders having an axial length of several times the diameter, e.g. embossing, pressing or printing
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Extrusion Moulding Of Plastics Or The Like (AREA)
Abstract
一种连续挤出式包胶机料筒加热装置，包括挤出机的料筒和控制器，料筒上从头端至尾端依次设置有第一加热温区、第二加热温区、第三加热温区，第一加热温区中设置有第一加热装置，第一加热装置包括第一水箱、第一水泵、第一三通阀和第一换热器，第一水箱内设置有第一加热器和第二温度传感器，第一水箱的出水端通过管道与第一水泵的进水端连接。本发明的一种连续挤出式包胶机料筒加热装置和加热方法使用时当第三加热器温区产生了多余的热量时，可以将多余的热量供给第一加热温区，避免了第三加热温区多余热量的浪费，提高了能源利用率，降低车间环境温度，降低了车间空调降温成本。
A continuous extrusion type rubber lagging machine barrel heating device includes an extruder barrel and a controller. A first heating temperature zone, a second heating temperature zone, and a third heating temperature zone are sequentially arranged on the barrel from the head end to the tail end. A first heating device is arranged in the first heating temperature zone. The first heating device includes a first water tank, a first water pump, a first three-way valve, and a first heat exchanger. A first heater and a second temperature sensor are arranged in the first water tank. The water outlet of the first water tank is connected to the water inlet of the first water pump through a pipeline. When the continuous extrusion type rubber lagging machine barrel heating device and heating method of the present invention are used, when the third heater temperature zone generates excess heat, the excess heat can be supplied to the first heating temperature zone, thereby avoiding the waste of excess heat in the third heating temperature zone, improving energy utilization, reducing the ambient temperature of the workshop, and reducing the cost of air conditioning cooling in the workshop.
Description
Technical Field
The invention relates to the field of machinery, in particular to rubber roll rubber coating forming, and specifically relates to a heating device and a heating method for a charging barrel of a continuous extrusion type rubber coating machine.
Background
The molding process of the rubber roller comprises a manual rubber coating molding method, a winding rubber coating molding method, a casting molding method and an extrusion molding method. In the domestic market, in addition to the roller encapsulation mode mainly comprising winding method encapsulation, the mode of adopting continuous extrusion encapsulation is increasingly adopted by more users for mass production of rubber rollers. The continuous extrusion encapsulation is mainly to continuously extrude rubber materials through one or more extruders corresponding to the same die head or a plurality of die heads, meanwhile, metal cores of roller bodies are embedded in the die heads, and the rubber materials are coated on the metal cores through continuous extrusion, so that the required rubber roller is obtained.
In continuous extrusion encapsulation, materials are extruded to a die head through an extruder barrel and a matched screw rod in a rotating way under the cooperation of certain pressure and temperature, the screw rod is generally divided into three sections according to the characteristics of the screw rod, namely a material conveying section, a material compressing section and a material metering section, each section corresponds to the same working temperature zone, and the sections are a first temperature zone, a second temperature zone and a third temperature zone in sequence, namely the whole material barrel is divided into three temperature zones corresponding to the screw rod of the whole material barrel, and different working temperature zones are provided with different process temperatures. The temperature sources in material extrusion are mainly frictional heat and shearing heat between the screw and the material cylinder and between the screw and the material, and the rest heat sources are supplemented by a heating device outside the material cylinder as required. The working temperatures of the first temperature zone, the second temperature zone and the third temperature zone are distributed in a sequential ascending rule, and the temperature of the third temperature zone with the highest temperature is not more than 100 ℃. The first temperature area is just entering the section for the material, needs more supplementary temperature of external heating device, and the second temperature area material is mainly compression stage, and the gathering of a large amount of materials and the rising of technology temperature also need external heating device's concurrent heating, and the third temperature area belongs to the material metering section, and the material promotes through the heat of two preceding temperature areas, reaches the temperature near with final target, and consequently this temperature area is less to the demand of external heating device concurrent heating, along with the accumulation of screw extrusion time, still can often appear the condition that the temperature overflows.
The existing external heating device of the charging barrel usually adopts a resistance heating ring, induction heating and other modes to supplement heat by combining a temperature closed loop. Aiming at the problem of ultrahigh temperature of a material conveying section, a heating device is generally adopted for externally installing a heat radiation fan to cool. Similarly, the second temperature zone can also be used for the same fan. From the above-described cartridge heating scheme, there are the following problems:
The redundant heat in the third temperature zone can be greatly wasted in workshop air, so that the energy utilization rate is reduced on one hand;
The heat dissipation of the third temperature area increases the environmental temperature of the workshop, and increases the cooling cost of the air conditioner of the workshop when the batch production line works;
Disclosure of Invention
The invention aims to provide a continuous extrusion type rubber coating machine charging barrel heating device and a heating method, which aim to solve the technical problems that excessive heat in a third temperature area of a charging barrel in the prior art can be greatly wasted in workshop air, the energy utilization rate is reduced, and the environmental temperature of a workshop is increased.
The invention relates to a charging barrel heating device of a continuous extrusion type rubber coating machine, which comprises a charging barrel of an extruder and a controller, wherein a first heating temperature zone, a second heating temperature zone and a third heating temperature zone are sequentially arranged from the head end to the tail end of the charging barrel,
A first temperature sensor is arranged in a charging barrel in the first heating temperature zone, a first heating device is arranged in the first heating temperature zone, the first heating device comprises a first water tank, a first water pump, a first three-way valve and a first heat exchanger, the first water tank is internally provided with a first heater and a second temperature sensor, the water outlet end of the first water tank is connected with the water inlet end of the first water pump through a pipeline, the water outlet end of the first water pump is connected with the water inlet end of the first three-way valve, a first heat exchange tube is wound on the charging barrel in the first heating temperature zone, the periphery of the first heat exchange tube is provided with a first heat preservation layer, the first water outlet end of the first three-way valve is connected with the water inlet end of the first heat exchange tube through a pipeline, the water outlet end of the first heat exchange tube is connected with the water return end of the first water tank through a pipeline, the second heat exchange tube and the third heat exchange tube are arranged in the first heat exchanger, the second water outlet end of the first three-way valve is connected with the water inlet end of the second heat exchange tube through a pipeline, the water outlet end of the second heat exchange tube flows towards the water inlet end of the first heat exchange tube through the first heat exchange tube,
A third temperature sensor is arranged in a charging barrel in the second heating temperature zone, a second heating device is arranged in the second heating temperature zone, the second heating device comprises a second water tank and a second water pump, a second heater and a fourth temperature sensor are arranged in the first water tank, the water outlet end of the second water tank is connected with the water inlet end of the second water pump through a pipeline, a fourth heat exchange tube is wound on the charging barrel in the second heating temperature zone, a second heat preservation layer is arranged on the periphery of the fourth heat exchange tube, the water outlet end of the second water pump is connected with the water inlet end of the fourth heat exchange tube, the water outlet end of the fourth heat exchange tube is connected with the water return end of the second water tank through a pipeline,
A fifth temperature sensor is arranged in a charging barrel in the third heating temperature zone, a third heating device is arranged in the third heating temperature zone, the third heating device comprises a third water tank, a third water pump, a second three-way valve and a second heat exchanger, the third water tank is internally provided with a third heater and a sixth temperature sensor, the water outlet end of the third water tank is connected with the water inlet end of the third water pump through a pipeline, the water outlet end of the third water pump is connected with the water inlet end of the second three-way valve, a fifth heat exchange tube is wound on the charging barrel in the third heating temperature zone, the periphery of the fifth heat exchange tube is provided with a third heat preservation layer, the first water outlet end of the second three-way valve is connected with the water inlet end of the fifth heat exchange tube through a pipeline, the water outlet end of the fifth heat exchange tube is connected with the water return end of the second water tank through a pipeline, the second heat exchange tube and the seventh heat exchange tube are arranged in the second heat exchanger, the second water outlet end of the second three-way valve is connected with the water inlet end of the sixth heat exchange tube through a pipeline, the water outlet end of the sixth heat tube flows to the fifth heat exchange tube through the water outlet end of the fifth heat exchange tube and the fifth heat exchange tube is connected with the water inlet end of the fifth heat exchange tube through the fifth heat tube through the pipeline,
The third heat exchange tube is connected with the seventh heat exchange tube through a heat tube,
The signal input end of the controller is respectively connected with the first temperature sensor, the second temperature sensor, the third temperature sensor, the fourth temperature sensor, the fifth temperature sensor and the sixth temperature sensor, and the signal output end of the controller is respectively connected with the control ends of the first three-way valve, the second three-way valve, the first water pump, the second water pump, the third water pump, the first heater, the second heater and the third heater.
Further, cooling fans are respectively arranged on the outer sides of the first heat exchanger, the second heat exchanger and the second water tank.
Further, the head end of the charging barrel is connected with the feeding device, and the tail end of the charging barrel is connected with the extrusion die head.
Specifically, the heater adopts metals with higher heat conductivity coefficients such as copper, aluminum and the like as soaking components, grooves are formed in the soaking components, and water-passing copper pipes are embedded in the grooves.
The invention also provides a heating method of the charging barrel of the encapsulation machine, which is realized by the device, and comprises the following steps:
S10: setting a temperature threshold, detecting the temperature of the material in the charging barrel of the third heating temperature zone by a fifth temperature sensor, transmitting the temperature value to a controller,
S20: when the temperature value is smaller than the temperature threshold value, the controller opens the water inlet and the first water outlet of the first three-way valve and the second three-way valve respectively, and closes the second water outlet, and at the moment, the heating process of the first heating temperature zone is as follows: the first heater heats the water in the first water tank, the water enters the first heat exchange tube to exchange heat with the material in the charging barrel under the action of the first water pump, and then flows back to the first water tank, the heating process of the second heating temperature zone and the third heating temperature zone is the same as that of the first heating temperature zone,
S30: when the temperature value is greater than or equal to the temperature threshold value, the controller opens the water inlets and the second water outlets of the first three-way valve and the second three-way valve respectively, closes the first water outlet, and simultaneously controls the first heater and the third heater to stop heating, and at the moment, the heat exchange process between the first heating temperature zone and the third heating temperature zone is as follows: the water of the third water tank exchanges heat with the material of the third heating temperature zone in the fifth heat exchange tube, so that redundant heat of the material of the third heating temperature zone is taken away, the heat is exchanged with the seventh heat exchange tube through the sixth heat exchange tube, the seventh heat exchange tube transmits the heat to the third heat exchange tube, the third heat exchange tube exchanges heat with the second heat exchange tube, the second heat exchange tube transmits the heat to the first heat exchange tube through the water, and finally, the first heat exchange tube exchanges heat with the material of the first heating temperature zone, so that when the temperature of the third heating temperature zone is overhigh, the redundant heat of the third heating temperature zone is supplied to the first heating temperature zone, and the heating process of the second heating temperature zone is kept unchanged.
Compared with the prior art, the invention has positive and obvious effects. According to the heating device and the heating method for the charging barrel of the continuous extrusion type rubber coating machine, when redundant heat is generated in the third heater temperature zone, the redundant heat can be supplied to the first heating temperature zone through the heat exchange pipe and the heat pipe, so that the waste of the redundant heat in the third heating temperature zone is avoided, the energy utilization rate is improved, the environmental temperature of a workshop is reduced, and the cooling cost of an air conditioner of the workshop is reduced.
Drawings
FIG. 1 is a schematic view of a heating device and a heating method for a feed cylinder of a continuous extrusion type encapsulation machine according to the present invention.
Detailed Description
The present invention is further described below with reference to the drawings and examples, but the present invention is not limited to the examples, and all the similar structures and similar variations using the present invention should be included in the protection scope of the present invention.
Examples
As shown in figure 1, the invention relates to a charging barrel heating device of a continuous extrusion type rubber coating machine, which comprises a charging barrel 1 and a controller of the extruder, wherein a first heating temperature zone 2, a second heating temperature zone 3 and a third heating temperature zone 4 are sequentially arranged from the head end to the tail end of the charging barrel 1,
A first temperature sensor 5 is arranged in a charging barrel 1 in the first heating temperature zone 2, a first heating device is arranged in the first heating temperature zone 2, the first heating device comprises a first water tank 6, a first water pump 7, a first three-way valve 8 and a first heat exchanger 9, a first heater 10 and a second temperature sensor 11 are arranged in the first water tank 6, the water outlet end of the first water tank 6 is connected with the water inlet end of the first water pump 7 through a pipeline, the water outlet end of the first water pump 7 is connected with the water inlet end of the first three-way valve 8, a first heat exchange tube 12 is wound on the charging barrel 1 in the first heating temperature zone 2, a first heat preservation layer 13 is arranged on the periphery of the first heat exchange tube 12, the first water outlet end of the first three-way valve 8 is connected with the water inlet end of the first heat exchange tube 12 through a pipeline, the water outlet end of the first heat exchange tube 12 is connected with the water return end of the first water tank 6 through a pipeline, a second heat exchange tube 14 and a third heat exchange tube 15 are arranged in the first heat exchanger 9, the water outlet end of the first three-way valve 8 is connected with the water inlet end of the first heat exchange tube 14 through a first pipeline 16, the water inlet end of the first heat exchange tube 14 flows in the direction of the first heat exchange tube 12 through the water inlet end of the first heat exchange tube 14, the water inlet end of the first heat exchange tube 14 is connected with the water inlet end of the first heat tube 12 through the first heat pipe 16, the water outlet end of the first heat pipe 12 flows,
A third temperature sensor 17 is arranged in the charging barrel 1 in the second heating temperature zone 3, a second heating device is arranged in the second heating temperature zone 3, the second heating device comprises a second water tank 18 and a second water pump 19, a second heater 20 and a fourth temperature sensor 21 are arranged in the first water tank 6, the water outlet end of the second water tank 18 is connected with the water inlet end of the second water pump 19 through a pipeline, a fourth heat exchange tube 22 is wound on the charging barrel 1 in the second heating temperature zone 3, a second heat preservation layer 23 is arranged on the periphery of the fourth heat exchange tube 22, the water outlet end of the second water pump 19 is connected with the water inlet end of the fourth heat exchange tube 22, the water outlet end of the fourth heat exchange tube 22 is connected with the water return end of the second water tank 18 through a pipeline,
The fifth temperature sensor 24 is arranged in the charging barrel 1 in the third heating temperature zone 4, the third heating device is arranged in the third heating temperature zone 4 and comprises a third water tank 25, a third water pump 26, a second three-way valve 27 and a second heat exchanger 28, the third water tank 25 is internally provided with a third heater 29 and a sixth temperature sensor 30, the water outlet end of the third water tank 25 is connected with the water inlet end of the third water pump 26 through a pipeline, the water outlet end of the third water pump 26 is connected with the water inlet end of the second three-way valve 27, a fifth heat exchange tube 31 is wound on the charging barrel 1 in the third heating temperature zone 4, the periphery of the fifth heat exchange tube 31 is provided with a third heat preservation layer 32, the first water outlet end of the second three-way valve 27 is connected with the water inlet end of the fifth heat exchange tube 31 through a pipeline, the water outlet end of the fifth heat exchange tube 31 is connected with the water return end of the second water tank 18 through a pipeline, the sixth heat exchange tube 33 and the seventh heat exchange tube 34 are arranged in the second heat exchanger 31, the water outlet end of the second three-way valve 27 is connected with the water inlet end of the sixth heat exchange tube 33 through a pipeline, the water outlet end of the sixth heat exchange tube 33 flows to the water inlet end of the fifth heat exchange tube 31 through the sixth heat exchange tube 33 through the pipeline 39, the water outlet end of the sixth heat exchange tube 31 flows to the water inlet end of the fifth heat exchange tube 31 is connected with the water outlet end of the sixth heat exchange tube 31 through the water inlet end of the sixth heat tube 31,
The third heat exchange tube 15 is connected with the seventh heat exchange tube 34 through a heat tube 35,
The signal input ends of the controller are respectively connected with the control ends of the first temperature sensor 5, the second temperature sensor 11, the third temperature sensor 17, the fourth temperature sensor 21, the fifth temperature sensor 24 and the sixth temperature sensor 30, and the signal output ends of the controller are respectively connected with the control ends of the first three-way valve 8, the second three-way valve 27, the first water pump 7, the second water pump 19, the third water pump 26, the first heater 10, the second heater 20 and the third heater 29.
Further, the outside of the first heat exchanger 9, the second heat exchanger 28 and the second water tank 18 are respectively provided with a cooling fan 36.
Further, the head end of the charging barrel 1 is connected with a feeding device 37, and the tail end is connected with an extrusion die head 38.
Specifically, the heater adopts metals with higher heat conductivity coefficients such as copper, aluminum and the like as soaking components, grooves are formed in the soaking components, and water-passing copper pipes are embedded in the grooves.
As shown in fig. 1, a heating method of a heating device for a charging barrel of a continuous extrusion type encapsulation machine according to the present invention comprises the following steps:
s10: a temperature threshold is set, a fifth temperature sensor 24 detects the temperature of the material in the cartridge 1 of the third heating temperature zone 4, and transmits the temperature value to the controller,
S20: when the temperature value is smaller than the temperature threshold value, the controller opens the water inlet and the first water outlet of the first three-way valve 8 and the second three-way valve 27 respectively, and closes the second water outlet, and at this time, the heating process of the first heating temperature zone 2 is as follows: the first heater 10 heats the water in the first water tank 6, the water enters the first heat exchange tube 12 to exchange heat with the material in the charging barrel 1 under the action of the first water pump 7, and then flows back to the first water tank 6, the heating process of the second heating temperature zone 3 and the third heating temperature zone 4 is the same as that of the first heating temperature zone 2,
S30: when the temperature value is greater than or equal to the temperature threshold value, the controller opens the water inlet and the second water outlet of the first three-way valve 8 and the second three-way valve 27 respectively, and closes the first water outlet, and simultaneously the controller controls the first heater 10 and the third heater 29 to stop heating, and at this time, the heat exchange process between the first heating temperature zone 2 and the third heating temperature zone 4 is as follows: the water in the third water tank 25 exchanges heat with the material in the third heating temperature zone 4 in the fifth heat exchange tube 31, takes away redundant heat of the material in the third heating temperature zone 4, exchanges heat with the seventh heat exchange tube 34 through the sixth heat exchange tube 33, the seventh heat exchange tube 34 transmits the heat to the third heat exchange tube 15 through the heat tube 35, the third heat exchange tube 15 exchanges heat with the second heat exchange tube 14, the second heat exchange tube 14 brings the heat to the first heat exchange tube 12 through the water, and finally the first heat exchange tube 12 exchanges heat with the material in the first heating temperature zone 2, so that when the temperature of the third heating temperature zone 4 is too high, the redundant heat of the third heating temperature zone 4 is supplied to the first heating temperature zone 2, and the heating process of the second heating temperature zone 3 is kept unchanged.
Claims (4)
1. A continuous extrusion formula encapsulation machine feed cylinder heating device, includes the feed cylinder (1) of extruder, its characterized in that: the device also comprises a controller, a first heating temperature zone (2), a second heating temperature zone (3) and a third heating temperature zone (4) are sequentially arranged on the charging barrel (1) from the head end to the tail end,
The first heating temperature zone (2) in feed cylinder (1) in be provided with first temperature sensor (5), be provided with first heating device in first heating temperature zone (2), first heating device includes first water tank (6), first water pump (7), first three-way valve (8) and first heat exchanger (9), be provided with first heater (10) and second temperature sensor (11) in first water tank (6), the water outlet end of first water tank (6) is connected with the water inlet end of first water pump (7) through the pipeline, the water outlet end of first water pump (7) is connected with the water inlet end of first three-way valve (8), twine on feed cylinder (1) in first heating temperature zone (2) has first heat exchange tube (12), first heat preservation (13) are provided with to first heat exchange tube (12) periphery, the first water outlet end of first three-way valve (8) is connected with the water inlet end of first heat exchange tube (12) through the pipeline, the water outlet end of first heat exchange tube (12) is connected with the water inlet end of first heat exchange tube (14) through the pipeline and the water inlet end of first heat exchange tube (14) through the first heat exchange tube (6), the water outlet end of first heat exchange tube (12) is connected with the water outlet end of first heat exchange tube (14) through the water inlet end of first heat exchange tube (14) is connected with the water inlet end of first heat exchange tube (12) through the first heat pipe (1), the first one-way valve (16) is connected with the water inlet end of the first heat exchange tube (12), the flowing direction of the first one-way valve (16) is that the water outlet end of the second heat exchange tube (14) flows to the water inlet end of the first heat exchange tube (12),
A third temperature sensor (17) is arranged in a charging barrel (1) in the second heating temperature zone (3), a second heating device is arranged in the second heating temperature zone (3), the second heating device comprises a second water tank (18) and a second water pump (19), a second heater (20) and a fourth temperature sensor (21) are arranged in the first water tank (6), the water outlet end of the second water tank (18) is connected with the water inlet end of the second water pump (19) through a pipeline, a fourth heat exchange tube (22) is wound on the charging barrel (1) in the second heating temperature zone (3), a second heat preservation layer (23) is arranged on the periphery of the fourth heat exchange tube (22), the water outlet end of the second water pump (19) is connected with the water inlet end of the fourth heat exchange tube (22), the water outlet end of the fourth heat exchange tube (22) is connected with the water return end of the second water tank (18) through a pipeline,
The novel heat exchange device is characterized in that a fifth temperature sensor (24) is arranged in a charging barrel (1) in a third heating temperature zone (4), a third heating device is arranged in the third heating temperature zone (4), the third heating device comprises a third water tank (25), a third water pump (26), a second three-way valve (27) and a second heat exchanger (28), a third heater (29) and a sixth temperature sensor (30) are arranged in the third water tank (25), the water outlet end of the third water tank (25) is connected with the water inlet end of the third water pump (26) through a pipeline, the water outlet end of the third water pump (26) is connected with the water inlet end of the second three-way valve (27), a fifth heat exchange tube (31) is wound on the charging barrel (1) in the third heating temperature zone (4), a third heat insulation layer (32) is arranged on the periphery of the fifth heat exchange tube (31), the first water outlet end of the second three-way valve (27) is connected with the water inlet end of the fifth heat exchange tube (31) through a pipeline, the water outlet end of the fifth heat exchange tube (31) is connected with the water outlet end of the sixth heat exchange tube (33) through a pipeline, and the water outlet end of the third heat exchange tube (33) is connected with the water outlet end of the third heat exchange tube (18) through a third heat exchange tube (33) through a pipeline, and the water outlet end of the third heat exchange tube (33) is connected with the water outlet end of the third heat exchange tube (33) through a third heat pipe, the second one-way valve (39) is connected with the water inlet end of the fifth heat exchange tube (31), the flow direction of the second one-way valve (39) is that the water outlet end of the sixth heat exchange tube (33) flows to the water inlet end of the fifth heat exchange tube (31),
The third heat exchange tube (15) is connected with the seventh heat exchange tube (34) through a heat tube (35),
The signal input end of the controller is respectively connected with the control ends of the first temperature sensor (5), the second temperature sensor (11), the third temperature sensor (17), the fourth temperature sensor (21), the fifth temperature sensor (24) and the sixth temperature sensor (30), and the signal output end of the controller is respectively connected with the control ends of the first three-way valve (8), the second three-way valve (27), the first water pump (7), the second water pump (19), the third water pump (26), the first heater (10), the second heater (20) and the third heater (29).
2. The continuous extrusion encapsulation machine cartridge heating apparatus of claim 1, wherein: and cooling fans (36) are respectively arranged on the outer sides of the first heat exchanger (9), the second heat exchanger (28) and the second water tank (18).
3. The continuous extrusion encapsulation machine cartridge heating apparatus of claim 1, wherein: the head end of the charging barrel (1) is connected with the feeding device (37), and the tail end is connected with the extrusion die head (38).
4. A method of heating a cartridge of an encapsulation machine using the apparatus of claim 1, characterized by: the method comprises the following steps:
S10: setting a temperature threshold, a fifth temperature sensor (24) detects the temperature of the material in the charging barrel (1) of the third heating temperature zone (4) and transmits the temperature value to the controller,
S20: when the temperature value is smaller than the temperature threshold value, the controller opens the water inlet and the first water outlet of the first three-way valve (8) and the second three-way valve (27) respectively, and closes the second water outlet, and at the moment, the heating process of the first heating temperature zone (2) is as follows: the first heater (10) heats the water in the first water tank (6), the water enters the first heat exchange tube (12) to exchange heat with the material in the charging barrel (1) under the action of the first water pump (7), and then flows back to the first water tank (6), the heating process of the second heating temperature zone (3) and the third heating temperature zone (4) is the same as that of the first heating temperature zone (2),
S30: when the temperature value is greater than or equal to the temperature threshold value, the controller opens the water inlet and the second water outlet of the first three-way valve (8) and the second three-way valve (27) respectively, and closes the first water outlet, and simultaneously the controller controls the first heater (10) and the third heater (29) to stop heating, and at the moment, the heat exchange process between the first heating temperature zone (2) and the third heating temperature zone (4) is as follows: the water of the third water tank (25) exchanges heat with the material of the third heating temperature zone (4) in the fifth heat exchange tube (31), the redundant heat of the material of the third heating temperature zone (4) is taken away, and the heat exchange is carried out between the sixth heat exchange tube (33) and the seventh heat exchange tube (34), the seventh heat exchange tube (34) transmits the heat to the third heat exchange tube (15) through the heat tube (35), the third heat exchange tube (15) exchanges heat with the second heat exchange tube (14), the second heat exchange tube (14) transmits the heat to the first heat exchange tube (12) through the water, and finally, the first heat exchange tube (12) exchanges heat with the material of the first heating temperature zone (2), so that the redundant heat of the third heating temperature zone (4) is supplied to the first heating temperature zone (2) when the temperature of the third heating temperature zone (4) is too high.
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| US4541792A (en) * | 1983-05-09 | 1985-09-17 | Nrm Corporation | Dual loop temperature control system for rubber and other extruders with optional connection for heat pump |
| EP0825405A1 (en) * | 1996-08-12 | 1998-02-25 | Buss Ag | Method and arrangement for cooling and/or heating, in particular for machine or reactor housings |
| CN106827459A (en) * | 2017-02-24 | 2017-06-13 | 杭州新子新能源股份有限公司 | A kind of EVA adhesive film production line barrel Temperature Intelligent Control System and its control method |
| CN207808445U (en) * | 2018-01-23 | 2018-09-04 | 东莞市奥迪利塑胶原料有限公司 | A cooling device for an extruder used to produce plastic raw materials |
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