CN113106583A - Relaxation heat setting oven for regenerated polyester spinning raw material - Google Patents
Relaxation heat setting oven for regenerated polyester spinning raw material Download PDFInfo
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- CN113106583A CN113106583A CN202110312045.2A CN202110312045A CN113106583A CN 113106583 A CN113106583 A CN 113106583A CN 202110312045 A CN202110312045 A CN 202110312045A CN 113106583 A CN113106583 A CN 113106583A
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- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
- D02G1/20—Combinations of two or more of the above-mentioned operations or devices; After-treatments for fixing crimp or curl
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Abstract
The invention relates to the field of chemical fibers, in particular to a relaxation heat setting oven for a regenerated polyester spinning raw material. The oven comprises an upper hopper, an upper layer conveying belt, a middle hopper, a middle layer conveying belt, a lower hopper and a lower layer conveying belt; the upper layer conveying belt, the middle layer conveying belt and the lower layer conveying belt are respectively distributed on the upper layer, the middle layer and the lower layer; the discharge port of the feeding hopper is positioned above the feeding end of the upper-layer conveying belt; the discharge end of the upper layer conveying belt is connected with the feed end of the middle layer conveying belt through a middle hopper, and the discharge end of the middle layer conveying belt is connected with the feed end of the lower layer conveying belt through a lower hopper; the stirring rollers are arranged in the middle hopper and the lower hopper, the plurality of rotating rods are circumferentially arranged on the stirring rollers, and the circumferential rotating speed of the stirring rollers is 0.6-0.8 cm/s. The oven reduces the occupied area of the whole oven, realizes overturning and drying of materials, and improves the drying quality of products.
Description
Technical Field
The invention relates to the field of chemical fibers, in particular to a relaxation heat setting oven for a regenerated polyester spinning raw material.
Background
In the existing post-spinning process in the chemical fiber industry, particularly the short fiber industry, after the three-dimensional filament bundle is subjected to tension heat setting and a plurality of drafting processes, the three-dimensional filament bundle is curled and cut off and needs to enter a relaxation heat setting oven for dehumidification and drying setting. As shown in fig. 1, the conventional oven is a single-layer conveying channel, materials enter along a hopper at the input end of the single-layer conveying channel, and then the single-layer conveying channel conveys the materials on the upper surface of the single-layer conveying channel to different heating areas; after the hot air of the corresponding zone bit heats and dries the materials from top to bottom, the single-layer conveying channel outputs and discharges the materials to complete the material heating and drying process.
The prior art has the following defects: the relaxation heat setting oven adopts a single-layer single-channel conveying mode, and the required oven channel is long, so that the occupied area of the whole oven is long; and the length of the single-layer channel conveying belt is too long, the load of the conveying chain is large, the chain is quickly abraded, the hot air circulating system is various in equipment, and the equipment maintenance rate is high. Meanwhile, the materials cannot be turned over after being distributed in the single-layer conveying channel, and the hot air can only heat and dry the materials from top to bottom; therefore, the temperature difference between the upper layer and the lower layer is easily formed, the temperature setting can only meet the requirement of single-side drying, the drying effect is influenced, and the drying quality of the product is reduced.
Disclosure of Invention
The purpose of the invention is: aiming at the problems, the method reduces the occupied area length of the whole oven by arranging a plurality of layers of conveying belts, and reduces the load of a conveying chain and the maintenance rate of equipment; furthermore, the invention discloses a relaxation heat setting oven for regenerated polyester spinning raw materials, which is provided with a middle hopper and a lower hopper, is provided with stirring rollers to realize the turnover of the materials and improve the drying quality of products.
In order to achieve the purpose, the invention adopts the following technical scheme:
a relaxation heat setting oven for a regenerative polyester spinning raw material comprises an upper hopper, an upper layer conveying belt, a middle hopper, a middle layer conveying belt, a lower hopper and a lower layer conveying belt; the upper layer conveying belt, the middle layer conveying belt and the lower layer conveying belt are respectively distributed on the upper layer, the middle layer and the lower layer; the discharge port of the feeding hopper is positioned above the feeding end of the upper-layer conveying belt; the discharge end of the upper layer conveying belt is connected with the feed end of the middle layer conveying belt through a middle hopper, and the discharge end of the middle layer conveying belt is connected with the feed end of the lower layer conveying belt through a lower hopper; the stirring rollers are arranged in the middle hopper and the lower hopper, the plurality of rotating rods are circumferentially arranged on the stirring rollers, and the circumferential rotating speed of the stirring rollers is 0.6-0.8 cm/s.
Preferably, the belt surfaces of the upper layer conveying belt, the middle layer conveying belt and the lower layer conveying belt are punched screen plates.
Preferably, the feeding end and the discharging end of the upper layer conveying belt, the feeding end of the middle layer conveying belt, the discharging end and the feeding end and the discharging end of the lower layer conveying belt, the feeding hopper, the middle hopper and the discharging hopper are all positioned outside the heat insulation layer of the oven, and the rest part of the oven is positioned in the heat insulation layer of the oven; the junction between the inside and the outside of the heat-insulating layer of the oven is blocked by a flexible heat-insulating material.
Preferably, the oven heat insulation layer internally comprises a plurality of heating areas; each heating area corresponds to a column of longitudinal hot air circulation, and the space between each heating area is blocked by flexible heat insulation materials.
Preferably, the inner sides of the upper layer conveying belt, the middle layer conveying belt and the lower layer conveying belt of each heating zone are provided with heat conduction pipes; the heat conduction pipe is spiral, and fins are distributed on the surface of the heat conduction pipe.
Preferably, the relaxation heat setting oven in the chemical fiber industry comprises a circulating fan, an air collecting cover, an air return pipeline, an air outlet pipeline and an even air cover; the air collecting cover is positioned at the bottom of each zone bit of the drying oven, a guide plate is arranged in the air collecting cover, and an air collecting port of the air collecting cover is connected with a suction port of the circulating fan through an air return pipeline; the outlet of the circulating fan is connected with the uniform air hood through an air outlet pipeline, and a guide plate is arranged inside the uniform air hood.
Preferably, the relaxation heat setting oven in the chemical fiber industry further comprises a dehumidifying fan, an automatic pressure regulating valve and a pressure sensor; the air outlet pipeline is provided with a tee port, and one end of the tee port is connected with the dehumidification fan through a pipeline; the automatic pressure regulating valve is installed at the air inlet pipeline end of the dehumidification fan, and the pressure sensor is installed at the front end of the pipeline.
Preferably, the two heating areas of the oven are connected with a group of moisture removing devices; the whole hot air circulation is carried out in a single zone in the oven, and the rest parts of the whole circulation system device are wrapped by heat insulation materials except for the dehumidification fan and the circulation fan which are arranged outside the heat insulation shell.
Preferably, one side of the oven is provided with a closed heat-insulating space separated from the heat-insulating layer of the oven, and a combustion chamber and a flow guide pipeline are arranged in the closed heat-insulating space; the closed heat preservation space is communicated with the oven heat insulation layer through a diversion pipeline; a burner is arranged on one side of the closed heat-preserving space, a jet orifice of the burner is communicated with one end of the combustion chamber, and an air inlet is arranged on the side wall of the combustion chamber; the other end of the combustion chamber is communicated with three flow guide pipelines which are respectively communicated with one side of the upper, middle and lower groups of heat conduction pipes through the flow guide pipelines. The flow guide pipeline is provided with a regulating valve, and the heat conduction pipe is provided with a temperature sensor; the relaxation heat setting oven in the chemical fiber industry also comprises an exhaust pipe; the other side of the heat conduction pipe is communicated with the exhaust pipe, and the pipeline penetrates through the heat preservation side wall of the oven and is communicated with the outside of the oven.
The relaxation heat setting oven for the regenerated polyester spinning raw material, which adopts the technical scheme, has the advantages that:
the oven is changed from a single layer to three layers, so that the longitudinal space is effectively utilized, and the occupied area is reduced to one third of the original area; one long conveying belt is converted into a plurality of layers of short conveying belts, so that less materials are conveyed on each layer of short conveying belt, and the load of a transmission chain and the corresponding friction loss are reduced; after the length of the equipment is reduced, the number of zone bits is reduced, and the maintenance rate is reduced; the materials are rolled in multiple directions during conveying, and multiple surfaces of the materials can be heated by hot air; thereby the condition of upper and lower layer temperature difference when only heating a surface of material has been avoided, the stoving effect of material surface has been guaranteed.
Drawings
Fig. 1 is a schematic structural diagram of a conventional oven.
Fig. 2 is a schematic structural diagram of the present invention.
Fig. 3 is a schematic structural diagram of the middle hopper.
FIG. 4 is a cross-sectional view of a single heating zone of the oven.
Fig. 5 is a schematic structural view of a hot air circulation passage and a combustion heating passage.
6-conveying belt chain plates, 13-baking oven, L3-material conveying channel, Q1-heating zone I, Q2-heating zone II, L1-hot air circulating channel and L2-combustion heating channel.
Detailed Description
The following describes in detail embodiments of the present invention with reference to the drawings.
Example 1
A relaxation heat setting oven for regenerated polyester spinning raw material as shown in fig. 2-5, which comprises an upper hopper 171, an upper layer conveyer belt 18, a middle hopper 172, a middle layer conveyer belt 19, a lower hopper 173 and a lower layer conveyer belt 20; the upper layer conveyer belt 18, the middle layer conveyer belt 19 and the lower layer conveyer belt 20 are respectively distributed on the upper layer, the middle layer and the lower layer; the discharge port of the upper hopper 171 is positioned above the feed end of the upper layer conveyor belt 18; the discharge end of the upper layer conveyer belt 18 is connected with the feed end of the middle layer conveyer belt 19 through a middle hopper 172, and the discharge end of the middle layer conveyer belt 19 is connected with the feed end of the lower layer conveyer belt 20 through a lower hopper 173; the stirring roller 174 is arranged in the middle hopper 172 and the lower hopper 173, the stirring roller 174 is circumferentially provided with a plurality of rotating rods 175, and the circumferential rotating speed of the stirring roller 174 is 0.6cm/s-0.8 cm/s. In operation, material falls along the feed opening end of the upper hopper 171 to the feed end of the upper conveyor 18; then the upper layer conveyor belt 18 conveys the materials to the middle hopper 172, the toggle roller 174 in the middle hopper 172 is driven by the driving device to rotate, and the rotating rod 175 rotates along with the toggle roller 174 to turn over the materials in the middle hopper 172 and then the materials fall into the middle layer conveyor belt 19 from the discharge port of the middle hopper 172; the middle layer conveyer belt 19 conveys the materials to the lower hopper 173, the poking roller 174 in the lower hopper 173 is driven by the driving device to rotate, the rotating rod 175 rotates along with the poking roller 174 to turn over the materials in the lower hopper 173 again, and the materials fall into the lower layer conveyer belt 20 from the discharge port of the lower hopper 173; thereby realizing the overturning and drying of the outer surface of the material.
The belt surfaces of the upper layer conveying belt 18, the middle layer conveying belt 19 and the lower layer conveying belt 20 are punching screen plates. The hot air can pass through the three layers of materials in the flowing process and realize the convection of the hot air from top to bottom. The feeding end and the discharging end of the upper layer conveyer belt 18, the feeding end of the middle layer conveyer belt 19, the discharging end and the feeding end and the discharging end of the lower layer conveyer belt 20, the feeding hopper 171, the middle hopper 172 and the discharging hopper 173 are all positioned outside the oven heat insulation layer, and the rest part of the oven is positioned in the oven heat insulation layer; the junction between the inside and the outside of the heat-insulating layer of the oven is blocked by a flexible heat-insulating material. Thereby the inside of the oven is separated from the outside air to reduce the heat loss. The oven heat insulation layer comprises a plurality of heating areas; each heating area corresponds to a column of longitudinal hot air circulation, and the space between each heating area is blocked by flexible heat insulation materials. Ensuring that each heating area is independent from each other, and the temperature of each area can be independently adjusted. The inner sides of the upper layer conveyer belt 18, the middle layer conveyer belt 19 and the lower layer conveyer belt 20 of each heating area are provided with heat conduction pipes 5; the heat conduction pipe 5 is formed in a spiral shape, and increases a contact area with air in the effective accommodation space. And the surface of the heat conductive pipe 5 is distributed with fins to increase the heat transfer area.
The relaxation heat setting oven in the chemical fiber industry comprises a circulating fan 11, an air collecting cover 14, an air return pipeline 12, an air outlet pipeline 9 and an even air cover 7; the air collecting cover 14 is positioned at the bottom of each zone of the drying oven, a guide plate is arranged in the air collecting cover 14 to ensure that the air inlet quantity at the far end and the near end of the air suction opening is balanced, and the air collecting opening of the air collecting cover 14 is connected with the suction opening of the circulating fan 11 through the air return pipeline 12; the outlet of the circulating fan 11 is connected with the air homogenizing cover 7 through an air outlet pipeline 9, and a guide plate is arranged inside the air homogenizing cover 7 to ensure that the air outlet quantity at the far end and the near end of the air outlet is balanced.
The relaxation heat setting oven in the chemical fiber industry also comprises a dehumidifying fan 8, an automatic pressure regulating valve 15 and a pressure sensor 16; the air outlet pipeline 9 is provided with a tee port, and one end of the tee port is connected with the dehumidification fan 8 through a pipeline; the automatic pressure regulating valve 15 is arranged at the air inlet pipeline end of the dehumidifying fan 8, and the pressure sensor 16 is arranged at the front end of the pipeline. When the hot air circulation system works, the pressure sensor 16 detects the air pressure in the hot air circulation loop in real time; because the materials contain moisture, liquid water is converted into gaseous water in the heating and drying processes, the volume is expanded, the air volume in the hot air circulation loop is increased, the pressure is increased, and the load of the circulating fan is overlarge if the materials are not treated; in addition, the humidity of the internal circulating air is too high, so that the material drying effect is influenced. Therefore, the signal of the pressure sensor 16 is output to the pressure controller, and the opening size of the pressure regulating valve 15 is automatically regulated through PID, so that the moisture-containing hot air is automatically and quantitatively discharged. The two heating areas of the oven are connected with a group of moisture removing devices; whole heated air circulation carries out in the inside single position of oven, and whole circulation system device except dehumidification fan 8 and circulating fan 11 in the heat preservation shell outside, all the other parts are all wrapped up with insulation material in order to reduce thermal loss.
One side of the oven is provided with a closed heat-preserving space separated from the oven heat-insulating layer, and a combustion chamber 2 and a diversion pipeline 3 are arranged in the closed heat-preserving space; the closed heat preservation space is communicated with the oven heat insulation layer through a diversion pipeline 3; a combustor 1 is arranged on one side of the closed heat-preservation space, a jet orifice of the combustor 1 is communicated with one end of a combustion chamber 2, and an air inlet 21 is arranged on the side wall of the combustion chamber 2; the other end of the combustion chamber 2 is communicated with three flow guide pipelines 3, and the three flow guide pipelines 3 are respectively communicated with one side of the upper group of heat conduction pipes, the middle group of heat conduction pipes and the lower group of heat conduction pipes 5 through the flow guide pipelines and are used for transferring heat generated by the combustion engine during combustion to corresponding hot air circulation channels. The diversion pipeline 3 is provided with an adjusting valve 4, and the heat conduction pipe 5 is provided with a temperature sensor for adjusting the opening degree of the diversion pipeline valve; the relaxation heat setting oven in the chemical fiber industry also comprises an exhaust pipe 10; the other side of the heat conduction pipe 5 is communicated with an exhaust pipe 10, and the pipeline penetrates through the heat preservation side wall of the oven and is communicated with the outside of the oven for exhausting hot air combusted by the combustor to the outside of the oven. The original oven heat conduction pipe is heated by heat conduction oil, and the heat conduction oil is heated by a boiler and comprises two heat conduction processes: the heat is generated by burning natural gas for the first time and is conducted to heat conduction oil, and the heat conduction oil is conducted to circulating air through the heat conduction pipe for the second time; i.e., the heat undergoes secondary conduction, the heat transfer is inefficient. And the heat conducting oil pipeline has more branches, the conveying pipeline is long, and the heat loss is serious on the way. The heating mode is that the burner is directly burnt to generate heat and primary heat conduction is carried out to the hot air circulation channel through the heat conduction pipe, so that the heat utilization rate is greatly improved.
Claims (10)
1. A relaxation heat setting oven for regenerated polyester spinning raw materials comprises an upper hopper (171), an upper layer conveyer belt (18), a middle hopper (172), a middle layer conveyer belt (19), a lower hopper (173) and a lower layer conveyer belt (20); the upper layer conveyer belt (18), the middle layer conveyer belt (19) and the lower layer conveyer belt (20) are respectively distributed on the upper layer, the middle layer and the lower layer; the discharge hole of the feeding hopper (171) is positioned above the feed end of the upper layer conveyer belt (18); the device is characterized in that the discharge end of the upper layer conveyer belt (18) is connected with the feed end of the middle layer conveyer belt (19) through a middle hopper (172), and the discharge end of the middle layer conveyer belt (19) is connected with the feed end of the lower layer conveyer belt (20) through a lower hopper (173); the stirring roller (174) is arranged in the middle hopper (172) and the lower hopper (173), and a plurality of rotating rods (175) are arranged on the periphery of the stirring roller (174).
2. The relaxation heat setting oven for spinning raw material of regenerated polyester as claimed in claim 1, wherein the belt surfaces of the upper layer conveyor belt (18), the middle layer conveyor belt (19) and the lower layer conveyor belt (20) are perforated net plates.
3. The relaxation heat setting oven for spinning raw materials of recycled polyester as claimed in claim 1, wherein the feeding end and the discharging end of the upper layer conveyer belt (18), the feeding end of the middle layer conveyer belt (19), the discharging end and the feeding end and the discharging end of the lower layer conveyer belt (20), the upper hopper (171), the middle hopper (172) and the lower hopper (173) are all located outside the heat insulation layer of the oven, and the rest of the oven is located in the heat insulation layer of the oven; the junction between the inside and the outside of the heat-insulating layer of the oven is blocked by a flexible heat-insulating material.
4. The relaxation heat setting oven for the spinning raw material of the regenerated polyester as claimed in claim 1, wherein the inside of the heat insulating layer of the oven comprises a plurality of heating zones; each heating area corresponds to a column of longitudinal hot air circulation, and the space between each heating area is blocked by flexible heat insulation materials.
5. The relaxation and heat setting oven for spinning raw material of recycled polyester as claimed in claim 1, wherein the inner sides of the upper layer conveyor (18), the middle layer conveyor (19) and the lower layer conveyor (20) of each heating zone are provided with heat conducting pipes (5); the heat transfer pipe (5) is spiral, and fins are distributed on the surface of the heat transfer pipe (5).
6. The relaxation heat setting oven for the spinning raw material of the recycled polyester as claimed in claim 1, wherein the relaxation heat setting oven for the chemical fiber industry comprises a circulating fan (11), an air collecting hood (14), an air return pipeline (12), an air outlet pipeline (9) and an even air hood (7); the air collecting cover (14) is positioned at the bottom of each zone of the drying oven, a guide plate is arranged inside the air collecting cover (14), and an air collecting opening of the air collecting cover (14) is connected with a suction opening of the circulating fan (11) through an air return pipeline (12); the outlet of the circulating fan (11) is connected with the air homogenizing cover (7) through an air outlet pipeline (9), and a guide plate is arranged inside the air homogenizing cover (7).
7. The relaxation heat setting oven for the spinning raw material of the recycled polyester as claimed in claim 6, wherein the relaxation heat setting oven for the chemical fiber industry further comprises a dehumidifying fan (8), an automatic pressure regulating valve (15) and a pressure sensor (16); the air outlet pipeline (9) is provided with a three-way port, and one end of the three-way port is connected with the dehumidification fan (8) through a pipeline; the automatic pressure regulating valve (15) is arranged at the air inlet pipeline end of the dehumidifying fan (8), and the pressure sensor (16) is arranged at the front end of the pipeline.
8. The relaxation heat setting oven for spinning raw materials of recycled polyester as claimed in claim 7, wherein two heating areas of the oven are connected with a set of moisture removing devices; the whole hot air circulation is carried out in a single zone in the oven, and the rest parts of the whole circulation system device except the dehumidifying fan (8) and the circulating fan (11) are wrapped by heat insulation materials outside the heat insulation shell.
9. The relaxation and heat-setting oven for spinning raw materials of recycled polyester as claimed in claim 5, wherein one side of the oven is provided with a closed heat-insulating space separated from the heat-insulating layer of the oven, and the closed heat-insulating space is internally provided with a combustion chamber (2) and a flow guide pipeline (3); the closed heat preservation space is communicated with the oven heat insulation layer through a diversion pipeline (3); a combustor (1) is arranged on one side of the closed heat-preservation space, a jet orifice of the combustor (1) is communicated with one end of the combustion chamber (2), and an air inlet (21) is arranged on the side wall of the combustion chamber (2); the other end of the combustion chamber (2) is communicated with three flow guide pipelines (3), and the three flow guide pipelines (3) are respectively communicated with one side of the upper, middle and lower groups of heat conduction pipes (5) through the flow guide pipelines.
10. The relaxation and heat-setting oven for spinning raw materials of recycled polyester as claimed in claim 9, wherein the flow guide pipe (3) is provided with a regulating valve (4), and the heat conduction pipe (5) is provided with a temperature sensor; the relaxation heat setting oven in the chemical fiber industry also comprises an exhaust pipe (10); the other side of the heat conduction pipe (5) is communicated with an exhaust pipe (10), and the pipeline penetrates through the heat preservation side wall of the oven and is communicated with the outside of the oven.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110312045.2A CN113106583A (en) | 2021-03-24 | 2021-03-24 | Relaxation heat setting oven for regenerated polyester spinning raw material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110312045.2A CN113106583A (en) | 2021-03-24 | 2021-03-24 | Relaxation heat setting oven for regenerated polyester spinning raw material |
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| Publication Number | Publication Date |
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| CN113106583A true CN113106583A (en) | 2021-07-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110312045.2A Pending CN113106583A (en) | 2021-03-24 | 2021-03-24 | Relaxation heat setting oven for regenerated polyester spinning raw material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012082A (en) * | 2022-05-30 | 2022-09-06 | 余姚大发化纤有限公司 | Polyester staple fiber relaxation heat setting oven |
| CN116358246A (en) * | 2023-03-31 | 2023-06-30 | 爱铭建筑(国际)有限公司 | Solid waste treatment system |
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| CN2572317Y (en) * | 2002-10-14 | 2003-09-10 | 朱正平 | Three-layer belt type throug-flow dryer |
| CN103469411A (en) * | 2013-09-23 | 2013-12-25 | 宁波大发化纤有限公司 | Air-uniformizing and thermoforming baking oven |
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| CN204227855U (en) * | 2014-09-28 | 2015-03-25 | 南京同皓干燥设备有限公司 | Mesh dryer |
| CN105674716A (en) * | 2016-04-08 | 2016-06-15 | 李成 | Environment-friendly, efficient and energy-saving chemical fiber drying machine |
| CN106247778A (en) * | 2016-08-11 | 2016-12-21 | 成都市开悦化纤有限公司 | A kind of functional fibre heated oven |
| CN206430523U (en) * | 2017-01-18 | 2017-08-22 | 合肥赛旺坚果机械制造有限公司 | A kind of top and bottom blowing natural gas direct combustion type individual layer mesh belt dryer |
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2021
- 2021-03-24 CN CN202110312045.2A patent/CN113106583A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1483533A (en) * | 1973-09-14 | 1977-08-24 | Asahi Chemical Ind | Process and apparatus for heat treatment of synthetic fibre assemblies |
| CN2572317Y (en) * | 2002-10-14 | 2003-09-10 | 朱正平 | Three-layer belt type throug-flow dryer |
| CN103469411A (en) * | 2013-09-23 | 2013-12-25 | 宁波大发化纤有限公司 | Air-uniformizing and thermoforming baking oven |
| CN203771942U (en) * | 2014-04-02 | 2014-08-13 | 河南省天利工业炉有限公司 | Drying oven |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115012082A (en) * | 2022-05-30 | 2022-09-06 | 余姚大发化纤有限公司 | Polyester staple fiber relaxation heat setting oven |
| CN115012082B (en) * | 2022-05-30 | 2024-02-09 | 余姚大发化纤有限公司 | Relaxation heat setting oven for polyester staple fibers |
| CN116358246A (en) * | 2023-03-31 | 2023-06-30 | 爱铭建筑(国际)有限公司 | Solid waste treatment system |
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Application publication date: 20210713 |