CN203785419U - Heat exchange equipment for plasticizing oven of artificial leather and synthetic leather production line - Google Patents
Heat exchange equipment for plasticizing oven of artificial leather and synthetic leather production line Download PDFInfo
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- CN203785419U CN203785419U CN201420119622.1U CN201420119622U CN203785419U CN 203785419 U CN203785419 U CN 203785419U CN 201420119622 U CN201420119622 U CN 201420119622U CN 203785419 U CN203785419 U CN 203785419U
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Abstract
Heat exchange equipment for a plasticizing oven of an artificial leather and synthetic leather production line comprises a heat exchanger, whereinthe heat exchanger comprises a bracket; a plurality of radiating tubes are arranged on the bracket parallely; the two ends of each radiating tube are connected in order through a U-shaped tube; an inlet of the radiating tube at the lowest partis connected with an oil inlet pipe; the radiating tube at the uppermost part is connected with an oil outlet pipe; radiating fins are arranged on the surfaces of the radiating tubes; the radiating tubes adopt seamless steel tubes; the radiating fins are tightly connected into a whole with the outer surfaces of the radiating tubes through aluminium tubes adopting a rolling technology, which are arranged on the radiating tubes in a penetrating and sleeving manner. The heat exchange equipment is reasonable in design, simple and compact in structure, high in heat exchange efficiency, and less in energy consumption, and sufficiently lowers the production cost.
Description
Technical field
The utility model belongs to leather production technical field, relates in particular to the heat-exchange device of artificial leather synthetic leather production line plasticizing baking oven.
Background technology
Baking oven is the requisite equipment of the goods such as a kind of PU/PVC of manufacture artificial leather, PU synthetic leather, PVC floor, the anti-paulin of PVC tri-, PVC slipmat, PVC fabric coating, multiple film leather (splitting transfer-film leather or split leather), latex foam.The framework of existing baking oven adopts shaped steel integral manufacturing whole Transporting.Filling aluminosilicate fiber cotton in warming plate cavity is joined by institute, and cellucotton easily causes volume contraction through shaking, and after shrinking, in warming plate cavity, produces space, affects heat insulation effect.
Heat exchanger (radiator) is the heart of baking oven thermal source, the Main Function of heat exchanger is to ensure that baking oven has enough thermal source supplies, its heat dissipation capacity, except depending on the flow of the conduction oil that its inside is passed through, also depends on area of dissipation and the radiator thermal conductivity of radiator.The area of dissipation of radiator is relevant with the number of material therefor, and the thermal conductivity of radiator and the material of radiator and structure are relevant.Traditional heat exchanger fin is that aluminium sheet is struck out to fin shape, fin is through on seamless steel pipe or aluminium strip is wrapped in and on seamless steel pipe, forms fin with certain pitch, between the fin that these two kinds of modes are manufactured and seamless steel pipe, all there is gap, between gap, there is air, the thermal conductivity of air is lower than aluminium, thereby the conduction of impact heat affects radiating efficiency.Heat exchanger is located at baking oven casing top, has not only increased device height, and consumption of raw material is many, time-consuming.
The air-heater that send in baking oven adopts axial flow blower or common centrifugal fan.The large blast of axial flow blower air quantity is large, will produce pressure to foaming product surface, and the foaming of drawing up, extends foamed time, and production efficiency is low.Common centrifugal fan also exists problem and noise that the large blast of air quantity is large large.
In addition, be all furnished with a blast pipe and an exhaust blower in each thermal treatment zone of baking oven (unit baking oven), not only manufacturing cost is higher, and waste electric energy is more, causes also corresponding increase of use cost.
Utility model content
The utility model is in order to solve weak point of the prior art, provide that a kind of high insulating effect, heat exchanger effectiveness are high, power consumption less, the heat-exchange device of artificial leather synthetic leather production line plasticizing baking oven that cost is low.
For solving the problems of the technologies described above, the utility model adopts following technical scheme: the heat-exchange device of artificial leather synthetic leather production line plasticizing baking oven, comprise heat exchanger, described heat exchanger comprises support, parallelly on support be provided with some radiating tubes, between radiating tube two ends, connect by U-shaped pipe in order, the import of a radiating tube of foot is connected with oil inlet pipe, a radiating tube of topmost is connected with flowline, radiating tube surface is provided with radiating fin, radiating tube adopts seamless steel pipe, radiating fin adopts rolling technology to make and engage and be integrated with radiating tube intimate by the aluminum pipe being set on radiating tube.
Described heat exchanger is provided with suspended hood outward, the outlet of suspended hood is connected with send air-heater, send the air outlet of air-heater to be connected with vertical ajutage, the upper end of vertical ajutage is vertically connected with horizontal blast pipe, the two ends shutoff of horizontal blast pipe, the lower surface of horizontal blast pipe is provided with the tuyere that sprays hot gas down along its length.
Adopt technique scheme, artificial leather synthetic leather production line plasticizing baking oven also comprises casing, the framework that casing is made up of shaped steel and the warming plate being located at outside framework form, in warming plate, be filled with compressing alumina silicate fibre piece, described heat exchanger and send air-heater to be arranged on the bottom in casing, casing top is provided with blast pipe.
The described air-heater that send comprises motor, casing and impeller, impeller is located in casing, impeller comprises plectane and the Circular Plate of parallel and coaxial setting, between plectane and Circular Plate, edge is circumferentially evenly provided with a circle blade, the center of plectane is provided with the mount pad being connected with electric machine main shaft, casing is provided with air intake tube coupling and air-out tube coupling, the center line of air intake tube coupling overlaps with the center line of impeller, the center line of air-out tube coupling is vertical with the center line of impeller, air intake tube coupling is connected with Circular Plate inside edge, and the import of air-out tube coupling is towards blade.
In described casing, level is provided with the carrying roller that a row moves for holding up goods, and carrying roller is positioned at tuyere below.
Described a set of baking oven is combined by least two unit baking ovens, each unit baking oven length is 3 meters, 4 meters or 5 meters, baking oven top, each unit is all connected with a blast pipe, the outlet of all blast pipes is all connected on an exhaust supervisor, exhaust supervisor is provided with exhaust blower, the front end face top of previous element baking oven is provided with charging aperture, the rear end face top of last unit baking oven is provided with discharging opening, and the top of charging aperture is equipped with the top of discharging opening the gather qi together cover being connected with contiguous blast pipe.
The goods difference of artificial leather synthetic leather production line plasticizing baking oven because producing, the technological process of production line is not identical yet, the length of the baking oven quantity configuring in production line and single cover baking oven is also different, as rolling process PVC artificial leather, PVC floor, painting is scraped the production lines such as method latex foam and is all adopted the long single cover baking oven of a 30m～50m, and cladding process PU/PVC synthetic leather, cladding process PVC floor, cladding process split leather production line adopts many precision coating machines to mate single cover baking oven composition of multiple different lengths, be called for short " several bakings of several paintings " production line, as the cladding process PU/PVC synthetic leather or the PVC floor production line that are made up of single cover baking oven of four precision coating machine coupling quadruplet different lengths are called for short " four are coated with four dries " production line, the cladding process split leather production line being made up of single cover baking oven of three precision coating machine couplings, three cover different lengths is called for short " three-coat three-baking " production line.Single cover baking oven is made up of the unit baking oven of different quantity.
Single cover baking oven length can be set as 8 m, 12m, 16m, 20m or 24m ... etc.; Single cover baking oven of different length is made up of multiple unit baking oven again.
The framework of the casing of artificial leather synthetic leather production line plasticizing baking oven adopts section steel manufacture, fills compressing alumina silicate fibre piece in warming plate, not yielding, high insulating effect; Heat insulation effect is better, more saves energy consumption.The regulation and control that " volume adjusting apparatus " (disclosed technology of utility model that the patent No. is ZL200920258077.3), deflector and tens of " tuyere " (patent No. is the disclosed technology of the utility model of ZL 200920091398.9) are realized the horizontal hot blast of baking oven is housed on the horizontal blast pipe of each unit baking oven, makes baking oven transverse temperature uniformity.Heat exchanger that each unit baking oven mates, send air-heater, air channel, air compensation device and air draft pipeline composition hot-air system, make to form micro-negative pressure in baking oven, leak with protection from fumes.The temperature of each single cover baking oven all can be set arbitrarily and temperature-constant operation by subregion.All baking ovens adopt loose mail shipping, Assembling; Be conducive to transport and maintenance, especially for products for export, be conducive to container shipping.Unit baking oven has formed modular designs sizing, is conducive to the promotion and implementation of standardization, seriation, generalization three chemical industry works, and has improved operating efficiency, has reduced manufacturing cost.
Single cover baking oven length is relevant with line speed; The linear velocity of goods in baking oven requires higher, and single cover baking oven length is longer, and baking oven breadth width is wider, and the goods breadth of producing is wider; More wide being more difficult to of baking oven breadth manufactures, and requires overall technology content higher.Be specially: line speed is directly proportional to baking oven length: products thickness and line speed are inversely proportional to; Oven temperature is directly proportional to line speed: the uniformity of goods transverse gage error and baking oven transverse temperature is inversely proportional to.
160 DEG C～180 DEG C of PU/PVC artificial leathers, PVC floor, the theoretic blowing temperature of PVC slipmat goods, and restricted by the regular hour, foamed time as theoretical in the artificial leather of products thickness 1mm is one minute (time of staying in baking oven), if 20 meters of baking oven length, line speed is in 20m/min left and right; 30 meters of blowing oven length, line speed is in about 30m/min, (line speed and industrial chemicals select with fill a prescription relevant).More long production efficiency is higher for blowing oven, and production line overall technology content requirement is also higher, manufactures also more difficult.
The heat exchanger of artificial leather synthetic leather production line plasticizing baking oven is to adopt roll extrusion technology to manufacture the radiating fin of heat exchanger, relies on mould to carry out roll extrusion by aluminium pipe sleeve on seamless steel pipe, and aluminum pipe is rolled into interval fin uniformly and equidistantly.Aluminum pipe is closely as one with seamless steel pipe surface in rolling process, can eliminate like this gap of fin and radiating tube, has improved heat-conducting effect.Heat exchanger is also needed to carry out pressure test: heat exchanger is placed on pressure test bench, heat exchanger is carried out to inspection for leakage, heat exchanger continues 10min under 0.5MPa pressure, must not have Seepage (deep fat on-line operation pressure≤0.3MPa).
Heat in heat exchanger relies on and send air-heater to be sent into air channel, through sending " volume adjusting apparatus ", " deflector " and " tuyere " that hot blast is sent into baking oven.
Send air-heater to adopt low blast Wind Volume blower fan, motor adopts variable-frequency motor coupling Frequency Converter Control, has replaced traditional axial flow blower and common centrifugal fan.The air-heater that send in artificial leather synthetic leather production line plasticizing baking oven has all overcome the disadvantage existing with fan, and it adopts centrifugal blower pattern, and Multi-vane type impeller lengthens shaft type motor, and the air quantity producing is large, and the little noise of blast is also little.
On each casing, all connect a blast pipe, it is upper that the outlet of the blast pipe of all blast pipes is all connected to an exhaust supervisor, and exhaust supervisor is provided with exhaust blower, like this blower fan on existing each blast pipe is removed, and has reduced cost.And gather qi together cover is set, and be discharged to the waste gas outside casing to absorb by charging aperture and discharging opening, so just can avoid waste gas to the pollution in workshop, improve people's physical and mental health.The exhaust blower that exhaust is responsible for adopts variable-frequency motor control, and gas flow rate in pipeline is accelerated, and makes the micro-negative pressure of formation in casing, exhaust is unimpeded, blast pipe on each cover baking oven need not be joined air exhauster again, and it is unimpeded that the exhaust blower that only needs exhaust to be responsible for can be realized exhaust, saves the energy.
In sum, artificial leather synthetic leather production line plastifies the reasonable in design, simple in structure and compact of baking oven, the high insulating effect of casing, the heat exchanger effectiveness of heat exchanger is high, send that the air quantity of air-heater is large and noise is low, a whole set of gas exhaust piping only need be at waste gas purification apparatus place a supporting exhaust blower, save electric energy, fully reduce costs.
Brief description of the drawings
Fig. 1 is the structural representation of artificial leather synthetic leather production line plasticizing baking oven;
Fig. 2 is the structural representation of heat exchanger in Fig. 1;
Fig. 3 is the structural representation of radiating tube and radiating fin in Fig. 2;
Fig. 4 is the structural representation that send air-heater in Fig. 1;
Fig. 5 is the structural representation of impeller in Fig. 4;
Fig. 6 is the A-A cutaway view of Fig. 5.
Detailed description of the invention
As shown in Fig. 1～Fig. 6, artificial leather synthetic leather production line plasticizing baking oven, comprise casing 1, the framework 2 that casing 1 is made up of shaped steel and the warming plate 3 being located at outside framework 2 form, in warming plate 3, be filled with compressing alumina silicate fibre piece, casing 1 inner bottom part is provided with heat exchanger 4 and send air-heater 5, send the import of air-heater 5 to be connected with heat exchanger 4 by suspended hood 6, send the air outlet of air-heater 5 to be connected with vertical ajutage 7, the upper end of vertical ajutage 7 is connected with the horizontal blast pipe 8 that is positioned at casing 1 internal upper part, the two ends shutoff of horizontal blast pipe 8, the lower surface of horizontal blast pipe 8 is provided with the tuyere 9 that sprays hot gas down along its length, casing 1 top is provided with blast pipe 10, heat exchanger 4 comprises support 11, the parallel some radiating tubes 12 that are provided with on support 11, between radiating tube 12 two ends, connect by U-shaped pipe 13 in order, the import of a radiating tube 12 of foot is connected with oil inlet pipe 14, a radiating tube 12 of topmost is connected with flowline 15, radiating tube 12 surfaces are provided with radiating fin 16, and radiating tube 12 adopts seamless steel pipe, and radiating fin 16 adopts rolling technology to make and engage and be integrated with radiating tube 12 intimate by the aluminum pipe 30 being set on radiating tube 12.
Send air-heater 5 to comprise motor 17, casing 18 and impeller 19, impeller 19 is located in casing 18, impeller 19 comprises plectane 20 and the Circular Plate 21 of parallel and coaxial setting, between plectane 20 and Circular Plate 21, edge is circumferentially evenly provided with a circle blade 22, plectane 20 center is provided with the mount pad 29 being connected with motor 17 main shafts, casing 18 is provided with air intake tube coupling 23 and air-out tube coupling 24, the center line of air intake tube coupling 23 overlaps with the center line of impeller 19, the center line of air-out tube coupling 24 is vertical with the center line of impeller 19, air intake tube coupling 23 is connected with Circular Plate 21 inside edges, the import of air-out tube coupling 24 is towards blade 22.
The interior level of casing 1 is provided with the carrying roller 25 that a row moves for holding up goods 28, and carrying roller 25 is positioned at tuyere 9 belows.
A set of baking oven is combined by least two unit baking ovens, each unit baking oven length is 3 meters, 4 meters or 5 meters, baking oven top, each unit is all connected with a blast pipe 10, the outlet of all blast pipes 10 is all connected on an exhaust supervisor 26, exhaust supervisor 26 is provided with exhaust blower (not illustrating out in Fig. 1), the front end face top of previous element baking oven is provided with charging aperture, the rear end face top of last unit baking oven is provided with discharging opening, and the top of charging aperture is equipped with the top of discharging opening the gather qi together cover 27 being connected with contiguous blast pipe 10.
The goods difference of the utility model because producing, the technological process of production line is not identical yet, the length of the baking oven quantity configuring in production line and single cover baking oven is also different, as rolling process PVC artificial leather, PVC floor, painting is scraped the production lines such as method latex foam and is all adopted the long single cover baking oven of a 30m～50m, and cladding process PU/PVC synthetic leather, cladding process PVC floor, cladding process split leather production line adopts many precision coating machines to mate single cover baking oven composition of multiple different lengths, be called for short " several bakings of several paintings " production line, as the cladding process PU/PVC synthetic leather or the PVC floor production line that are made up of single cover baking oven of four precision coating machine coupling quadruplet different lengths are called for short " four are coated with four dries " production line, the cladding process split leather production line being made up of single cover baking oven of three precision coating machine couplings, three cover different lengths is called for short " three-coat three-baking " production line.Single cover baking oven is made up of the unit baking oven of different quantity.
Single cover baking oven length can be set as 8 m, 12m, 16m, 20m or 24m ... etc.; Single cover baking oven of different length is made up of multiple unit baking oven again.
The framework 2 of casing 1 of the present utility model adopts section steel manufacture, and the alumina silicate fibre piece that the interior filling of warming plate 3 is compressing is not yielding, high insulating effect; Heat insulation effect is better, more saves energy consumption.The regulation and control that " volume adjusting apparatus " (disclosed technology of utility model that the patent No. is ZL200920258077.3), deflector and tens of " tuyere 9 " (patent No. is the disclosed technology of the utility model of ZL 200920091398.9) are realized the horizontal hot blast of baking oven is housed on the horizontal blast pipe 8 of each unit baking oven, makes baking oven transverse temperature uniformity.Heat exchanger 4 that each unit baking oven mates, send air-heater 5, air channel, air compensation device and air draft pipeline composition hot-air system, make to form micro-negative pressure in baking oven, leak with protection from fumes.The temperature of each single cover baking oven all can be set arbitrarily and temperature-constant operation by subregion.All baking ovens adopt loose mail shipping, Assembling; Be conducive to transport and maintenance, especially for products for export, be conducive to container shipping.Unit baking oven has formed modular designs sizing, is conducive to the promotion and implementation of standardization, seriation, generalization three chemical industry works, and has improved operating efficiency, has reduced manufacturing cost.
Single cover baking oven length is relevant with line speed; The linear velocity of goods in baking oven requires higher, and single cover baking oven length is longer, and baking oven breadth width is wider, and the goods breadth of producing is wider; More wide being more difficult to of baking oven breadth manufactures, and requires overall technology content higher.Be specially: line speed is directly proportional to baking oven length: products thickness and line speed are inversely proportional to; Oven temperature is directly proportional to line speed: the uniformity of goods transverse gage error and baking oven transverse temperature is inversely proportional to.
160 DEG C～180 DEG C of PU/PVC artificial leathers, PVC floor, the theoretic blowing temperature of PVC slipmat goods, and restricted by the regular hour, foamed time as theoretical in the artificial leather of products thickness 1mm is one minute (time of staying in baking oven), if 20 meters of baking oven length, line speed is in 20m/min left and right; 30 meters of blowing oven length, line speed is in about 30m/min, (line speed and industrial chemicals select with fill a prescription relevant).More long production efficiency is higher for blowing oven, and production line overall technology content requirement is also higher, manufactures also more difficult.
Heat exchanger 4 of the present utility model is to adopt roll extrusion technology to manufacture the radiating fin 16 of heat exchanger 4, relies on mould to carry out roll extrusion by aluminium pipe sleeve on seamless steel pipe, and aluminum pipe is rolled into interval fin uniformly and equidistantly.Aluminum pipe is closely as one with seamless steel pipe surface in rolling process, can eliminate like this gap of fin and radiating tube 12, has improved heat-conducting effect.Heat exchanger 4 is also needed to carry out pressure test: heat exchanger 4 is placed on pressure test bench, heat exchanger 4 is carried out to inspection for leakage, heat exchanger 4 continues 10min under 0.5MPa pressure, must not have Seepage (deep fat on-line operation pressure≤0.3MPa).
Heat in heat exchanger 4 relies on and send air-heater 5 to be sent into air channel, through sending " volume adjusting apparatus ", " deflector " and " tuyere 9 " that hot blast is sent into baking oven.
Send air-heater 5 to adopt low blast Wind Volume blower fan, motor 17 adopts variable-frequency motor 17 to mate Frequency Converter Control, has replaced traditional axial flow blower and common centrifugal fan.The air-heater 5 that send in the utility model has all overcome the disadvantage existing with fan, and it adopts centrifugal blower pattern, and Multi-vane type impeller 19 lengthens shaft type motor, and the air quantity producing is large, and the little noise of blast is also little.
On each casing 1, all connect a blast pipe 10, the outlet of the blast pipe 10 of all blast pipes 10 is all connected on an exhaust supervisor 26, and exhaust supervisor 26 is provided with exhaust blower, like this blower fan on existing each blast pipe 10 is removed, and has reduced cost.And gather qi together cover 27 is set, and be discharged to the waste gas outside casing 1 to absorb by charging aperture and discharging opening, so just can avoid waste gas to the pollution in workshop, improve people's physical and mental health.Exhaust blower on exhaust supervisor 26 adopts variable-frequency motor control, and gas flow rate in pipeline is accelerated, and makes the micro-negative pressure of the interior formation of casing 1, exhaust is unimpeded, blast pipe 10 on each cover baking oven need not be joined air exhauster again, only needs exhaust blower on exhaust supervisor 26 to realize exhaust unimpeded, saves the energy.
The cladding process PU/PVC artificial leather production line forming taking a set of four coating machines coupling quadruplet baking oven below, as example (being called for short " four are coated with four dries " production line), is specifically told about energy-saving effect of the present utility model.
Nearly 110 meters of " four be coated with four dry " Design of Production Line overall length, 76 meters of quadruplet baking oven total lengths, 18 unit, original Technology Need is equipped with 18 of 2.2kw blower fans, and installed capacity 39.6kw adds the 18.5kw8# blower fan of former retracting device, total installation of generating capacity 58.1kw.Energy-saving cladding process PVC floor baking oven no longer configures exhaust blower, is replaced by the air exhauster of DOP retracting device, after replacement, the 8# blower fan of the 18.5kw of former retracting device is changed into the 10# blower fan of 30kw, and exhaust system electrical power only has 30kw.
Energy-saving cladding process PVC floor production line can be saved the energy: 58.1-30=28.1kw.Produce continuously because cladding process PVC floor and PU/PVC artificial leather manufacturing enterprise are 24 hours, calculate by 200 working days every year, can save every year power consumption 134880 and spend.
Energy-saving cladding process PVC floor production line, exhaust supervisor 26 diameter is designed to 1000mm, and having got rid of former exhaust, to be responsible for 26 capacity little, can not meet the disadvantage of each blast pipe 10 exhaust air rates.10# blower fan is exhaust air rate 49000m at full capacity
3/ h, wind speed 17.1m/s, exhaust supervisor 26 and each blast pipe 10 are all designed with volume adjusting apparatus, are regulated the size of exhaust air rate; Each unit baking oven is designed with intake and supplements adjusting device and hot blast and form hot air circulating system, and exhaust is responsible for 26 tunnels each blast pipe 10 is formed to siphon, makes baking oven form micro-negative pressure, has not only avoided the race of baking oven smog to emit but also has saved energy resource consumption
Because of the goods difference of producing, the carrier pattern of baking oven is not identical yet: have deflector roll carrier type, chain rail needle plate carrier type, deflector roll and chain rail needle plate carrier coexist formula, release liners carrier type, guipure carrier type, silicone band carrier type, stainless steel band carrier type etc.
Above-described embodiment is not done any pro forma restriction to shape of the present utility model, material, structure etc.; any simple modification, equivalent variations and modification that every foundation technical spirit of the present utility model is done above embodiment, all belong to the protection domain of technical solutions of the utility model.
Claims (2)
1. the heat-exchange device of artificial leather synthetic leather production line plasticizing baking oven, comprise heat exchanger, it is characterized in that: described heat exchanger comprises support, parallelly on support be provided with some radiating tubes, between radiating tube two ends, connect by U-shaped pipe in order, the import of a radiating tube of foot is connected with oil inlet pipe, a radiating tube of topmost is connected with flowline, radiating tube surface is provided with radiating fin, radiating tube adopts seamless steel pipe, and radiating fin adopts rolling technology to make and engage and be integrated with radiating tube intimate by the aluminum pipe being set on radiating tube.
2. the heat-exchange device of artificial leather synthetic leather production line plasticizing baking oven according to claim 1, it is characterized in that: described heat exchanger is provided with suspended hood outward, the outlet of suspended hood is connected with send air-heater, send the air outlet of air-heater to be connected with vertical ajutage, the upper end of vertical ajutage is vertically connected with horizontal blast pipe, the two ends shutoff of horizontal blast pipe, the lower surface of horizontal blast pipe is provided with the tuyere that sprays hot gas down along its length.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119622.1U CN203785419U (en) | 2014-03-18 | 2014-03-18 | Heat exchange equipment for plasticizing oven of artificial leather and synthetic leather production line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420119622.1U CN203785419U (en) | 2014-03-18 | 2014-03-18 | Heat exchange equipment for plasticizing oven of artificial leather and synthetic leather production line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203785419U true CN203785419U (en) | 2014-08-20 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420119622.1U Expired - Fee Related CN203785419U (en) | 2014-03-18 | 2014-03-18 | Heat exchange equipment for plasticizing oven of artificial leather and synthetic leather production line |
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| Country | Link |
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| CN (1) | CN203785419U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836900A (en) * | 2014-03-18 | 2014-06-04 | 新乡市鼎鑫机械有限公司 | Heat exchanging device of plasticizing oven of artificial leather and synthetic leather production line |
| CN109898335A (en) * | 2019-04-16 | 2019-06-18 | 宁波工程学院 | A kind of synthetic leather production line baking oven system and its technique using waste gas circulation |
-
2014
- 2014-03-18 CN CN201420119622.1U patent/CN203785419U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103836900A (en) * | 2014-03-18 | 2014-06-04 | 新乡市鼎鑫机械有限公司 | Heat exchanging device of plasticizing oven of artificial leather and synthetic leather production line |
| CN109898335A (en) * | 2019-04-16 | 2019-06-18 | 宁波工程学院 | A kind of synthetic leather production line baking oven system and its technique using waste gas circulation |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140820 Termination date: 20190318 |