CN110926178B - Hot air oven with waste heat recovery function - Google Patents
Hot air oven with waste heat recovery function Download PDFInfo
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- CN110926178B CN110926178B CN201911279004.7A CN201911279004A CN110926178B CN 110926178 B CN110926178 B CN 110926178B CN 201911279004 A CN201911279004 A CN 201911279004A CN 110926178 B CN110926178 B CN 110926178B
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- heat recovery
- fiber
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- 239000002918 waste heat Substances 0.000 title claims abstract description 124
- 238000011084 recovery Methods 0.000 title claims abstract description 106
- 239000000835 fiber Substances 0.000 claims abstract description 129
- 238000001816 cooling Methods 0.000 claims abstract description 121
- 230000007704 transition Effects 0.000 claims abstract description 99
- 238000010438 heat treatment Methods 0.000 claims abstract description 69
- 230000007246 mechanism Effects 0.000 claims abstract description 49
- 229910000831 Steel Inorganic materials 0.000 claims description 47
- 239000010959 steel Substances 0.000 claims description 47
- 239000002699 waste material Substances 0.000 claims description 5
- 239000007789 gas Substances 0.000 claims description 3
- 229920000742 Cotton Polymers 0.000 claims description 2
- 238000007599 discharging Methods 0.000 claims 1
- 238000004064 recycling Methods 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 6
- 238000009423 ventilation Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 239000012209 synthetic fiber Substances 0.000 description 2
- 229920002994 synthetic fiber Polymers 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B13/00—Machines and apparatus for drying fabrics, fibres, yarns, or other materials in long lengths, with progressive movement
- F26B13/10—Arrangements for feeding, heating or supporting materials; Controlling movement, tension or position of materials
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H1/00—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres
- D04H1/40—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties
- D04H1/54—Non-woven fabrics formed wholly or mainly of staple fibres or like relatively short fibres from fleeces or layers composed of fibres without existing or potential cohesive properties by welding together the fibres, e.g. by partially melting or dissolving
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H3/00—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length
- D04H3/08—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating
- D04H3/14—Non-woven fabrics formed wholly or mainly of yarns or like filamentary material of substantial length characterised by the method of strengthening or consolidating with bonds between thermoplastic yarns or filaments produced by welding
-
- D—TEXTILES; PAPER
- D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
- D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
- D04H5/00—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length
- D04H5/06—Non woven fabrics formed of mixtures of relatively short fibres and yarns or like filamentary material of substantial length strengthened or consolidated by welding-together thermoplastic fibres, filaments, or yarns
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/001—Drying-air generating units, e.g. movable, independent of drying enclosure
- F26B21/002—Drying-air generating units, e.g. movable, independent of drying enclosure heating the drying air indirectly, i.e. using a heat exchanger
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B25/00—Details of general application not covered by group F26B21/00 or F26B23/00
- F26B25/02—Applications of driving mechanisms, not covered by another subclass
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treatment Of Fiber Materials (AREA)
Abstract
A hot air oven with a waste heat recovery function belongs to the technical field of non-woven machinery. The device is characterized in that a waste heat recovery mechanism for preheating a nonwoven web layer entering the fiber introduction module by returning waste heat collected in the heating zone box module, the transition box module and the cooling zone box module to the fiber introduction module is arranged at the corresponding positions corresponding to the front side and the rear side of the fiber introduction module, and the waste heat recovery mechanism extends from the lower side of the fiber introduction module to the lower side of the cooling zone box module through the lower side of the heating zone box module and the lower side of the transition box module after extending from the lower side of the fiber introduction module and is communicated with the heating zone box module, the transition box module and the cooling zone box module. The energy-saving effect is excellent.
Description
Technical Field
The invention belongs to the technical field of non-woven machinery, and particularly relates to a hot air oven with a waste heat recovery function.
Background
The hot air oven is one of the indispensable equipment in the whole set of hot air type nonwoven product production systems or production lines. The hot air oven is used for enabling high-temperature hot air to penetrate through the non-woven fabric layer or the cotton web layer, enabling the synthetic fibers to show a glass state, a high-elastic state, a softened state and a molten state when being heated, finally enabling the low-melting-point fibers and/or the synthetic fibers to be mutually bonded, and shaping after naturally cooling in the hot air oven. For this, see, but not limited to, the following patent documents: CN201428045Y (through-air oven), CN202292956U (a through-air cooling shaping oven), CN201537998U (circulating hot air oven), CN201081519Y (circulating hot air oven), CN87201262U (a deflector-type hot air oven with a deflector), CN1208592C (combination oven), CN102384639B (hot air oven), CN203024542U (improved oven structure), CN206572905U (a nonwoven fabric-over-oven device), CN205279657U (a far infrared oven for nonwoven fabric drying), CN208170943U (cylinder mould hot air oven), and the like.
As is clear from a reading of the above patent document, the arrangement of the mechanism in the hot air oven from the fiber layer inlet (also referred to as "fiber introduction module") to the fiber mat row outlet is a heating zone box module, a transition box module and a cooling zone box module in this order, and the heating zone box modules are usually two groups, each group is composed of an upper heating box and a lower heating box, a high-temperature air generating mechanism usually composed of a burner and a hot air blower is provided at the upper part corresponding to each group of heating zone boxes, the transition box module is composed of an upper transition box and a lower transition box, the cooling zone box module is composed of a cooling zone upper box and a cooling zone lower box, a transition box channel composed between the upper heating box and the lower heating box, a transition box channel composed between the upper transition box and the lower transition box, and a cooling box channel composed between the upper cooling box and the lower cooling box are collectively composed as a fiber layer channel. Specifically, the nonwoven fiber web layer input by the previous procedure passes through a nonwoven fiber introduction module, a heating box channel, a transition box channel and a cooling box channel in sequence to flow out of a hot air oven to form a fiber felt pad or other similar products; more specifically, the nonwoven fibrous web layer passes through the passage and exits from the row outlet while being held by the upper and lower wire-web curtains, which are driven by a wire-web curtain driving mechanism provided on the left side of the cooling zone box module, i.e., at the position of the row outlet.
As is known in the art, a large amount of waste heat is generated during the operation of the hot air oven, and if the waste heat cannot be fully or maximally recycled, energy waste is caused on the one hand, and the production comprehensive cost of nonwoven products such as the fiber mat is increased on the other hand. If the aforementioned transition box module is used as a waste heat recovery duty and waste heat is led to the aforementioned fiber layer inlet port through a pipe, that is, the fiber introduction module preheats the nonwoven web layer introduced from the fiber introduction module, the energy saving purpose can be achieved to some extent, but the actual recovery effect cannot achieve the desired purpose because the waste heat of the heating box module is large in amount and high in temperature is not directly recovered. The technical solutions to be described below are created in this context.
Disclosure of Invention
The invention aims to provide a hot air oven with a waste heat recovery function, which is favorable for recovering waste heat generated in the working process of a heating zone box module, a transition box module and a cooling zone box module so as to realize an excellent energy-saving effect.
The invention is characterized in that a waste heat recovery mechanism for recovering waste heat collected in the heating zone box module, the transition box module and the cooling zone box module to the fiber introducing module to preheat a nonwoven fiber web layer entering the fiber introducing module is arranged at the front side and the rear side of the fiber introducing module and at the corresponding positions respectively, and the waste heat recovery mechanism extends from the lower side of the fiber introducing module to the lower side of the heating zone box module and the lower side of the transition box module to the lower side of the cooling zone box module and is communicated with the heating zone box module, the transition box module and the cooling zone box module.
In a specific embodiment of the present invention, the fiber introduction module includes a pair of fiber introduction tank frames, a fiber introduction tank top plate and a fiber introduction tank lower connecting strip, the pair of fiber introduction tank frames are disposed in a state of being in correspondence to each other and each constitute a tank frame chamber, the fiber introduction tank top plate is fixed between upper portions of opposite sides of the pair of fiber introduction tank frames, and a moisture exhaust hood is provided on the fiber introduction tank top plate, the fiber introduction tank lower connecting strip is fixed between lower portions of opposite sides of the pair of fiber introduction tank frames, a space enclosed by the pair of fiber introduction tank frames and the fiber introduction tank top plate together is constituted as a fiber layer inlet port for introducing a nonwoven fiber web layer, the fiber layer inlet port communicates with the heating zone tank module, and the heating zone tank module communicates with the transition tank module, which communicates with the cooling zone tank module, and the waste heat recovery mechanism is disposed in the tank chamber and communicates with the fiber layer inlet port; the moisture exhaust hood communicates with the fibrous layer inlet opening.
In another specific embodiment of the present invention, a box frame cavity shielding door is provided at a position corresponding to the box frame cavity, a heating zone box module shielding door is provided at positions corresponding to the front side and the rear side of the heating zone box module, a transition box module shielding door is provided at positions corresponding to the front side and the rear side of the transition box module, and a cooling zone box module shielding door is provided at positions corresponding to the front side and the rear side of the cooling zone box module; the space between the heating zone box body module shielding door and the heating zone box body module is formed into a hot air cavity, the space between the transition box body module shielding door and the transition box body module is formed into a transition box body air guide cavity, and the space between the cooling zone box body module shielding door and the cooling zone box body module is formed into a cooling box waste heat air cavity; the waste heat recovery mechanism arranged in the box frame cavity is communicated with the hot air cavity, the transition box body air guide cavity and the cooling box waste heat air cavity.
In a further specific embodiment of the invention, the waste heat recovery mechanism comprises a waste heat recovery fan, a waste heat recovery fan air inlet pipe, a waste heat recovery fan air outlet pipe and a redundant air delivery pipe, wherein the waste heat recovery fan is arranged in the box frame cavity and driven by a fan driving motor, a waste heat recovery fan air inlet interface of the waste heat recovery fan is connected with the right end of the waste heat recovery fan air inlet pipe in a matching way, the left end of the waste heat recovery fan air inlet pipe sequentially passes through the lower part of the hot air cavity and the lower part of the transition box air guide cavity, extends to the lower part of the cooling box residual hot air cavity and is communicated with the hot air cavity, the transition box air guide cavity and the cooling box waste heat air cavity, the waste heat recovery fan air outlet interface of the waste heat recovery fan is connected with the front end of the waste heat recovery fan air outlet pipe and the lower end of the redundant air delivery pipe, one side of the middle part of the waste heat recovery fan air outlet pipe, which faces upwards, is provided with a waste heat recovery fan air outlet pipe hole which is communicated with the fiber layer inlet, the rear end of the waste heat recovery fan air outlet pipe is connected with the waste heat recovery fan air outlet interface of the waste heat recovery fan of the waste heat recovery mechanism arranged in the box frame cavity of the rear fiber introducing box frame in the pair of fiber introducing box frames, and the upper end of the redundant air delivery pipe is communicated with the outside through a redundant air outlet hole arranged at the top of the pair of fiber introducing box frames, wherein an air door switch is movably arranged in the redundant air delivery pipe; the lower part of the heating zone box module shielding door of the heating zone box module, the lower part of the transition box module shielding door of the transition box module and the lower part of the cooling zone box module shielding door of the cooling zone box module are contacted with one side of the waste heat recovery fan air inlet pipe facing outwards.
In still another specific embodiment of the present invention, a hot air chamber waste heat recovery hole is formed in a pipeline of the waste heat recovery fan air inlet pipe and in a region corresponding to the hot air chamber, a transition box air guide chamber waste heat recovery hole is formed in a region corresponding to the transition box air guide chamber, and a cooling box waste heat recovery hole is formed in a region corresponding to the cooling box waste hot air chamber.
In a further specific embodiment of the invention, a fibre layer introduction means is provided at a position corresponding to the fibre layer inlet opening and a fibre mat removal means is provided at a position corresponding to the left side of the cooling zone tank module.
In a further specific embodiment of the invention, the fiber layer introducing mechanism comprises an upper steel wire mesh curtain transition guide roller and a lower steel wire mesh curtain transition guide roller, the upper steel wire mesh curtain transition guide roller being rotatably supported between the opposite sides of the pair of fiber introducing box frames in the fiber layer entry port, and the lower steel wire mesh curtain transition guide roller being also rotatably supported between the pair of fiber introducing box frames at a position corresponding to the lower side of the upper steel wire mesh curtain transition guide roller; the fiber mat guiding mechanism comprises an upper steel wire mesh ring curtain guide roller, a lower steel wire mesh ring curtain guide roller and a pair of ring curtain guide roller supporting box frames, wherein the pair of ring curtain guide roller supporting box frames are arranged in a state corresponding to each other and are positioned at the left side of the cooling zone box body module, the upper steel wire mesh ring curtain guide roller is rotatably supported between one opposite side of the pair of ring curtain guide roller supporting box frames, the lower steel wire mesh ring curtain guide roller is rotatably supported between the pair of ring curtain guide roller supporting box frames at a position corresponding to the lower part of the upper steel wire mesh ring curtain guide roller, an upper steel wire mesh ring curtain is sleeved between the upper steel wire mesh ring curtain guide roller and the upper steel wire mesh ring curtain transition guide roller, a lower steel wire mesh ring curtain is sleeved between the lower steel wire mesh ring curtain guide roller and the lower steel wire mesh ring curtain transition guide roller, and fiber layers led in from the fiber layers are sequentially led out of the heating zone box module through a box body module yielding channel which is formed in the middle part of the height direction of the box body module, a heating zone yielding channel which is formed in the middle part of the height direction of the transition box body module, and a cooling zone box module leading out of the fiber layer from the middle part of the cooling zone box module is formed in the middle part of the height direction of the cooling zone box module.
In a further specific embodiment of the present invention, a hot air generating mechanism is arranged at the top of the heating zone box module, the hot air generating mechanism comprises a burner and a hot air fan, the burner is arranged at the top of the heating zone box module, the hot air fan is positioned above the burner, a hot air fan air inlet of the hot air fan is matched with a burner high-temperature gas outlet of the burner, and a hot air fan air outlet of the hot air fan is communicated with the hot air cavity.
In yet another specific embodiment of the present invention, a cold air generating mechanism is provided at the top of the cooling zone box module, the cold air generating mechanism includes a cooling fan and a cooling box, the cooling fan is provided at the top of the cooling zone box module, the cooling box is coupled with the cooling fan, a cooling box air inlet of the cooling box is coupled with a cooling fan air outlet of the cooling fan, and a cooling box air outlet of the cooling box is communicated with the outside.
In yet another embodiment of the present invention, the heating zone housing module is configured with a return air duct, the burner is in communication with the return air duct, and air is provided from the return air duct to the burner air inlet of the burner.
According to the technical scheme provided by the invention, as the waste heat recovery mechanisms for recovering the waste heat of the heating zone box body module, the transition box body module and the cooling zone box body module to the fiber introducing module and preheating the nonwoven fiber web entering the fiber introducing module are respectively arranged at the front side and the rear side corresponding to the fiber introducing module, the excellent energy saving effect can be realized.
Drawings
Fig. 1 is a structural diagram of an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the heating zone housing module shown in fig. 1.
Fig. 3 is a cross-sectional view of the cooling zone tank module shown in fig. 1.
Detailed Description
In order to make the technical spirit and advantages of the present invention more clearly understood, the applicant will now make a detailed description by way of example, but the description of the examples is not intended to limit the scope of the invention, and any equivalent transformation made merely in form, not essentially, according to the inventive concept should be regarded as the scope of the technical solution of the present invention.
In the following description, all concepts related to the directions or azimuths of up, down, left, right, front and rear are based on the position state of fig. 1, and thus should not be construed as a specific limitation on the technical solution provided by the present invention.
Referring to fig. 1, there are shown a fiber introduction module 1, a heating zone tank module 2, a transition tank module 3 and a cooling zone tank module 4 which are arranged in this order from right to left and are connected to each other.
The technical key points of the technical scheme provided by the invention are as follows: a heat recovery mechanism 5 for recovering the heat collected in the heating zone tank module 2, the transition tank module 3, and the cooling zone tank module 4 to the fiber introducing module 1 to preheat the nonwoven web layer entering the fiber introducing module 1 is provided at positions corresponding to the front side and the rear side of the fiber introducing module 1 and corresponding to each other, and the heat recovery mechanism 5 extends from the lower side of the fiber introducing module 1 to the lower side of the cooling zone tank module 4 through the lower side of the heating zone tank module 2 and the lower side of the transition tank module 3 in this order and communicates with the heating zone tank module 2, the transition tank module 3, and the cooling zone tank module 4.
With continued reference to fig. 1, the aforementioned fiber introduction module 1 includes a pair of fiber introduction tank frames 11, a fiber introduction tank top plate 12 and a fiber introduction tank lower connecting strip 13, the pair of fiber introduction tank frames 11 are disposed in a state of being corresponded back and forth to each other and each constitute a tank frame chamber 111, the fiber introduction tank top plate 12 is fixed between upper portions of facing sides of the pair of fiber introduction tank frames 11, and a moisture exhaust hood 121 is provided on the fiber introduction tank top plate 12, the fiber introduction tank lower connecting strip 13 is fixed between lower portions of facing sides of the pair of fiber introduction tank frames 11, a space enclosed by the pair of fiber introduction tank frames 11 and the fiber introduction tank top plate 12 together is constituted as a fiber layer intake port 14 for introducing a nonwoven fiber web layer, the fiber layer intake port 14 communicates with the aforementioned heating zone tank module 2, and the heating zone tank module 2 communicates with the aforementioned transition tank module 3, the aforementioned transition tank module 3 communicates with the aforementioned cooling zone tank module 4, and the aforementioned waste heat recovery mechanism 5 is disposed within the aforementioned tank chamber 111 and communicates with the aforementioned fiber layer intake port 14; the moisture exhaust hood 121 communicates with the fiber layer inlet 14.
As shown in fig. 1, a frame chamber shielding door 1111 is provided at a position corresponding to the frame chamber 111, a heating zone housing module shielding door 21 is provided at a position corresponding to the front side and the rear side of the heating zone housing module 2, a transition housing module shielding door 31 is provided at a position corresponding to the front side and the rear side of the transition housing module 3, and a cooling zone housing module shielding door 41 is provided at a position corresponding to the front side and the rear side of the cooling zone housing module 4; the space between the heating zone housing module shielding door 21 and the heating zone housing module 2 is formed as a hot air chamber 211, the space between the transition housing module shielding door 31 and the transition housing module 3 is formed as a transition housing air guide chamber 32, and the space between the cooling zone housing module shielding door 41 and the cooling zone housing module 4 is formed as a cooling tank residual hot air chamber 42; the waste heat recovery mechanism 5 provided in the box frame chamber 111 communicates with the hot air chamber 211, the transition box body air guide chamber 32, and the cooling box waste heat air chamber 42.
Continuing to see fig. 1, the waste heat recovery mechanism 5 includes a waste heat recovery fan 51, a waste heat recovery fan air inlet pipe 52, a waste heat recovery fan air outlet pipe 53 and a redundant air outlet pipe 54, the waste heat recovery fan 51 is disposed in the box frame cavity 111 and driven by a fan driving motor, a waste heat recovery fan air inlet port 511 of the waste heat recovery fan 51 is connected with the right end of the waste heat recovery fan air inlet pipe 52, the left end of the waste heat recovery fan air inlet pipe 52 is sequentially connected with the fiber layer inlet 14 through the lower part of the hot air cavity 211 and the lower part of the transition box air outlet cavity 32 and extends to the lower part of the cooling box waste air cavity 42 and is communicated with the hot air cavity 211, the transition box air outlet cavity 32 and the cooling box waste air outlet pipe 42, the waste heat recovery fan air outlet port 512 of the waste heat recovery fan 51 is simultaneously connected with the front end of the waste heat recovery fan air outlet pipe 53 and the lower end of the redundant air outlet pipe 54, the middle part of the waste heat recovery fan air outlet pipe 53 is provided with a waste heat recovery fan air outlet pipe hole 531 toward one side of the upper side, the waste heat recovery fan air outlet pipe hole 14 is sequentially connected with the fiber layer inlet pipe 14 through the lower part of the transition box air outlet pipe 32 of the front frame 11, the waste heat recovery fan air outlet pipe 11 is disposed in the front of the redundant box frame 11, and the redundant air outlet pipe 11 is connected with the redundant air outlet pipe 11 at the front end of the redundant box frame 11; the lower part of the heating zone housing module shielding door 21 of the heating zone housing module 2, the lower part of the transition housing module shielding door 31 of the transition housing module 3, and the lower part of the cooling zone housing module shielding door 41 of the cooling zone housing module 4 are in contact with the side of the waste heat recovery blower air inlet pipe 52 facing outward.
As shown in fig. 1, a hot air chamber waste heat recovery hole 521 is formed in a pipe of the waste heat recovery fan air inlet pipe 52 in a region corresponding to the hot air chamber 211, a transition box air guide chamber waste heat recovery hole 522 is formed in a region corresponding to the transition box air guide chamber 32, and a cooling box waste heat recovery hole 523 is formed in a region corresponding to the cooling box waste heat air chamber 42.
With continued reference to fig. 1, a fibrous layer introduction mechanism 6 is provided at a position corresponding to the aforementioned fibrous layer inlet port 14, and a fibrous mat discharge mechanism 7 is provided at a position corresponding to the left side of the aforementioned cooling zone tank module 4.
Referring to fig. 2 to 3 in combination with fig. 1, the aforementioned fiber layer introducing mechanism 6 includes an upper steel wire mesh curtain transition guide roller 61 and a lower steel wire mesh curtain transition guide roller 62, the upper steel wire mesh curtain transition guide roller 61 being rotatably supported between the facing sides of the aforementioned pair of fiber introducing box frames 11 in the aforementioned fiber layer inlet port 14 and also being adjustable up and down as required, while the lower steel wire mesh curtain transition guide roller 62 is rotatably supported between the pair of fiber introducing box frames 11 at a position corresponding to the lower side of the upper steel wire mesh curtain transition guide roller 61 as well; the fiber mat guiding mechanism 7 includes an upper steel wire mesh endless curtain guide roller 71, a lower steel wire mesh endless curtain guide roller 72, and a pair of endless curtain guide roller supporting frames 73, the pair of endless curtain guide roller supporting frames 73 being disposed in a state corresponding to each other and being located at the left side of the cooling zone tank module 4, the upper steel wire mesh endless curtain guide roller 71 being rotatably supported between the opposite sides of the pair of endless curtain guide roller supporting frames 73, the lower steel wire mesh endless curtain guide roller 72 being rotatably supported between the pair of endless curtain guide roller supporting frames 73 at a position corresponding to the lower side of the upper steel wire mesh endless curtain guide roller 71, wherein an upper steel wire mesh endless curtain 8a is interposed between the upper steel wire mesh endless curtain guide roller 71 and the upper steel wire mesh endless curtain transition guide roller 61, a lower wire mesh ring curtain 8b is interposed between the lower wire mesh ring curtain guide roller 72 and the lower wire mesh ring curtain transition guide roller 62, and the fiber layer introduced from the fiber layer inlet 14 is sequentially passed through the heating zone box module ring curtain abdication passage 22 formed in the middle of the heating zone box module 2 in the height direction, the transition box module ring curtain abdication passage (not shown in the drawing) formed in the middle of the transition box module 3 in the height direction, and the cooling zone box module ring curtain abdication passage (not shown in the drawing) formed in the middle of the cooling zone box module 4 in the height direction in a state where the upper wire mesh ring curtain 8a and the lower wire mesh ring curtain 8b are held together, and is led out from the discharge port 8 c.
As shown in fig. 1 to 3, a hot air generating mechanism 23 is disposed at the top of the heating zone housing module 2, the hot air generating mechanism 23 includes a burner 231 and a hot air blower 232, the burner 231 is disposed at the top of the heating zone housing module 2, the hot air blower 232 is disposed above the burner 231, a hot air blower inlet of the hot air blower 232 is connected with a burner high temperature gas outlet of the burner 231, and a hot air blower outlet of the hot air blower 232 is communicated with the hot air chamber 211.
As shown in fig. 1 and 2, a cold air generating mechanism 43 is provided at the top of the cooling zone tank module 4, the cold air generating mechanism 43 includes a cooling fan 431 and a cooling tank 432, the cooling fan 431 is provided at the top of the cooling zone tank module 4, the cooling tank 432 is coupled with the cooling fan 431, a cooling tank air inlet of the cooling tank 432 is coupled with a cooling fan air outlet of the cooling fan 431, and a cooling tank air outlet of the cooling tank 432 is communicated with the outside.
As can be seen from the schematic diagrams of fig. 2 and 3, the heating zone housing module 2 is formed with a return air duct 212, the burner 231 is communicated with the return air duct 212, and air is supplied from the return air duct 212 to the burner air inlet of the burner 231.
In fig. 2 and 3, an upper damper 21111 that opens or closes the hot air upper inlet 2111 of the aforementioned hot air chamber 211 and a lower damper 21121 that opens or closes the hot air lower inlet 2112 of the hot air chamber 211 are shown. In the operating state of the heating zone box module 2 (two in this embodiment), that is, in the combustion of the burner 231 of the hot air generating mechanism 23, the high temperature air generated by the burner 231 is introduced through the hot air inlet of the hot air blower 232 and is led out from the hot air blower outlet of the hot air blower 232 to the aforementioned hot air chamber 211. Since the upper damper 21111 is opened to the hot air upper inlet 2111 and the lower damper 21121 is closed to the hot air lower inlet 2112, the hot air entering the hot air chamber 211 is sequentially supplied to the burner 231 through the hot air upper inlet 2111, the upper chamber of the structural system of the heating chamber module 2, the upper ventilation holes on the upper ventilation plate of the lower part of the upper chamber, the upper wire mesh curtain 8a, the fiber layer 8d, the lower wire mesh curtain 8b, the lower chamber and the lower ventilation plate 241 (shown in fig. 1) on the lower ventilation plate 24 of the lower part of the lower chamber, and the trend of the hot air is also indicated by the arrows marked in the drawing.
In the operation state of the heating box module 2, the cool air generating mechanism 43 of the cooling box module 4 is also in the operation state, and the upper wire mesh curtain 8a and the lower wire mesh curtain 8b sandwich the fiber layer 8d by the operation of the power transmission mechanism, so that the fiber layer 8d enters from the fiber layer inlet 14 and flows out from the discharge port 8c as a fiber felt pad. Meanwhile, in the operating state of the heating zone box module 2, the waste heat recovery fan 51 of the waste heat recovery mechanism 5 is also in the operating state, specifically: part of the air in the return air duct 212 enters an air inlet pipe cavity 524 (indicated in fig. 1) of the air inlet pipe 52 of the waste heat recovery fan through a return air duct 2121 (indicated in fig. 1) at the lower part, meanwhile, the waste heat in the hot air cavity 211 enters a waste heat recovery hole 521 of the hot air cavity, the hot air in the transition box air guide cavity 32 of the transition box module 3 is introduced into the lower return air port 34 of the transition box through the upper return air port 33 of the transition box on the upper part, the hot air from the waste heat outlet port 34 of the transition box enters the waste heat recovery hole 522 of the transition box, the hot air from the waste heat outlet 44 of the cooling box of the box module 4 enters the waste heat recovery hole 523 of the cooling box, is introduced through an air inlet interface 511 of the waste heat recovery fan and is introduced into an air outlet pipe 53 of the waste heat recovery fan through an air outlet interface 512 of the waste heat recovery fan, and is introduced into the air outlet hole 531 of the waste heat recovery fan for preheating the fiber at the inlet 14 of the fiber layer so as to embody energy saving. When the excess air pressure is too high, the damper switch 541 is automatically opened, and a part of the recovered excess air is discharged from the redundant air discharge hole 112. The moist air generated during the preheating of the fibers is discharged upward by the aforementioned moisture discharge hood 121.
In summary, the technical scheme provided by the invention overcomes the defects in the prior art, successfully completes the task of the invention, and faithfully honors the technical effects carried by the applicant in the technical effect column above.
Claims (6)
1. A hot air oven with a waste heat recovery function, which comprises a fiber introduction module (1), a heating zone box module (2), a transition box module (3) and a cooling zone box module (4) which are sequentially arranged from right to left and are mutually connected, and is characterized in that waste heat recovery mechanisms (5) which are respectively arranged at the front side and the rear side corresponding to the fiber introduction module (1) and at the positions corresponding to each other and are used for recycling waste heat collected in the heating zone box module (2), the transition box module (3) and the cooling zone box module (4) to the fiber introduction module (1) to preheat a non-woven fiber cotton web layer entering the fiber introduction module (1), the waste heat recovery mechanism (5) extends from the lower side part of the fiber introduction module (1), sequentially passes through the lower side part of the heating zone box body module (2) and the lower side part of the transition box body module (3), extends to the lower side part of the cooling zone box body module (4) and is communicated with the heating zone box body module (2), the transition box body module (3) and the cooling zone box body module (4); the fiber introducing module (1) comprises a pair of fiber introducing box frames (11), a fiber introducing box top plate (12) and a fiber introducing box lower connecting strip (13), wherein the pair of fiber introducing box frames (11) are arranged in a state of being corresponding to each other back and forth and are respectively provided with a box frame cavity (111), the fiber introducing box top plate (12) is fixed between the upper parts of the opposite sides of the pair of fiber introducing box frames (11), a moisture discharging cover (121) is arranged on the fiber introducing box top plate (12), the fiber introducing box lower connecting strip (13) is fixed between the lower parts of the opposite sides of the pair of fiber introducing box frames (11), the space enclosed by a pair of fiber introducing box frames (11) and a fiber introducing box top plate (12) is formed into a fiber layer inlet (14) for introducing a nonwoven fiber web layer, the fiber layer inlet (14) is communicated with the heating box module (2), the heating box module (2) is communicated with the transition box module (3), the transition box module (3) is communicated with the cooling box module (4), and the waste heat recovery mechanism (5) is arranged in the box frame cavity (111) and is communicated with the fiber layer inlet (14); the moisture exhaust hood (121) communicates with the fibre layer inlet opening (14); a box frame cavity shielding door (1111) is arranged at a position corresponding to the box frame cavity (111), a heating zone box module shielding door (21) is arranged at a position corresponding to the front side and the rear side of the heating zone box module (2), a transition box module shielding door (31) is arranged at a position corresponding to the front side and the rear side of the transition box module (3), and a cooling zone box module shielding door (41) is arranged at a position corresponding to the front side and the rear side of the cooling zone box module (4); the space between the heating zone box body module shielding door (21) and the heating zone box body module (2) is formed into a hot air cavity (211), the space between the transition box body module shielding door (31) and the transition box body module (3) is formed into a transition box body air guide cavity (32), and the space between the cooling zone box body module shielding door (41) and the cooling zone box body module (4) is formed into a cooling box waste heat air cavity (42); the waste heat recovery mechanism (5) arranged in the box frame cavity (111) is communicated with the hot air cavity (211), the transition box body air guide cavity (32) and the cooling box waste heat air cavity (42); a fibrous layer introduction mechanism (6) is provided at a position corresponding to the fibrous layer inlet port (14), and a fibrous mat discharge mechanism (7) is provided at a position corresponding to the left side of the cooling zone tank module (4); the fiber layer guiding mechanism (6) comprises an upper steel wire mesh ring curtain transition guide roller (61) and a lower steel wire mesh ring curtain transition guide roller (62), wherein the upper steel wire mesh ring curtain transition guide roller (61) is rotatably supported between the opposite sides of the pair of fiber guiding box frames (11) in the fiber layer inlet (14), and the lower steel wire mesh ring curtain transition guide roller (62) is also rotatably supported between the pair of fiber guiding box frames (11) at a position corresponding to the lower part of the upper steel wire mesh ring curtain transition guide roller (61); the fiber mat guiding mechanism (7) comprises an upper steel wire mesh ring curtain guide roller (71), a lower steel wire mesh ring curtain guide roller (72) and a pair of ring curtain guide roller supporting box frames (73), wherein the pair of ring curtain guide roller supporting box frames (73) are arranged in a state of being in front-back correspondence with each other and are positioned at the left side of the cooling zone box body module (4), the upper steel wire mesh ring curtain guide roller (71) is rotatably supported between the opposite sides of the pair of ring curtain guide roller supporting box frames (73), the lower steel wire mesh ring curtain guide roller (72) is rotatably supported between the pair of ring curtain guide roller supporting box frames (73) at the position corresponding to the lower part of the upper steel wire mesh ring curtain guide roller (71), an upper steel wire mesh ring curtain (8 a) is sleeved between an upper steel wire mesh ring curtain guide roller (71) and an upper steel wire mesh ring curtain transition guide roller (61), a lower steel wire mesh ring curtain (8 b) is sleeved between a lower steel wire mesh ring curtain guide roller (72) and a lower steel wire mesh ring curtain transition guide roller (62), fiber layers led in from fiber layer inlet openings (14) are sequentially led out from a discharge port (8 c) through a heating zone box body module ring curtain abdicating channel (22) formed in the middle of the heating zone box body module (2) in the height direction, a transition box body module ring curtain abdicating channel formed in the middle of the transition box body module (3) in the height direction and a cooling zone box body module ring curtain abdicating channel formed in the middle of the cooling zone box body module (4) in the height direction under the state that the upper steel wire mesh ring curtain (8 a) and the lower steel wire mesh ring curtain (8 b) are clamped together.
2. The hot air oven with the waste heat recovery function according to claim 1, wherein the waste heat recovery mechanism (5) comprises a waste heat recovery fan (51), a waste heat recovery fan air inlet pipe (52), a waste heat recovery fan air outlet pipe (53) and a redundant air delivery pipe (54), the waste heat recovery fan (51) is arranged in the box frame cavity (111) and driven by a fan driving motor, a waste heat recovery fan air inlet interface (511) of the waste heat recovery fan (51) is matched with the right end of the waste heat recovery fan air inlet pipe (52), the left end of the waste heat recovery fan air inlet pipe (52) is sequentially connected with the lower part of the hot air cavity (211) and the lower part of a transition box air guide cavity (32) and extends to the lower part of the cooling box waste heat air cavity (42) and is communicated with the air cavity (211), the waste heat recovery fan air outlet interface (512) of the waste heat recovery fan (51) is simultaneously connected with the front end of the waste heat recovery fan air outlet pipe (53) and the lower end of the redundant air delivery pipe (54), the waste heat recovery fan (531) is arranged at one side of the waste heat recovery fan air outlet pipe (14) and is communicated with the waste heat recovery fan air outlet pipe (531, the rear end of the waste heat recovery fan air outlet pipe (53) is connected with a waste heat recovery fan air outlet interface (512) of a waste heat recovery fan of a waste heat recovery mechanism (5) arranged in a box frame cavity (111) of one fiber introducing box frame (11) at the rear of the pair of fiber introducing box frames, the upper end of the redundant air outlet pipe (54) is communicated with the outside through a redundant air outlet hole (112) formed in the top of the pair of fiber introducing box frames (11), and an air door switch (541) is movably arranged in the redundant air outlet pipe (54); the lower part of a heating zone box module shielding door (21) of the heating zone box module (2), the lower part of a transition box module shielding door (31) of the transition box module (3) and the lower part of a cooling zone box module shielding door (41) of the cooling zone box module (4) are contacted with one side of the waste heat recovery fan air inlet pipe (52) facing outwards.
3. The hot air oven with the waste heat recovery function according to claim 2, characterized in that a hot air cavity waste heat recovery hole (521) is formed in a pipeline of the waste heat recovery fan air inlet pipe (52) and in a region corresponding to the hot air cavity (211), a transition box air guide cavity waste heat recovery hole (522) is formed in a region corresponding to the transition box air guide cavity (32), and a cooling box waste hot air cavity waste heat recovery hole (523) is formed in a region corresponding to the cooling box waste heat air cavity (42).
4. The hot air oven with the waste heat recovery function according to claim 1, characterized in that a hot air generating mechanism (23) is arranged at the top of the heating zone box module (2), the hot air generating mechanism (23) comprises a burner (231) and a hot air fan (232), the burner (231) is arranged at the top of the heating zone box module (2), the hot air fan (232) is positioned above the burner (231), a hot air fan air inlet of the hot air fan (232) is matched with a burner high-temperature gas outlet of the burner (231), and a hot air fan air outlet of the hot air fan (232) is communicated with the hot air cavity (211).
5. Hot air oven with waste heat recovery function according to claim 1 or 2, characterized in that a cold air generating mechanism (43) is arranged at the top of the cooling zone box module (4), the cold air generating mechanism (43) comprises a cooling fan (431) and a cooling box (432), the cooling fan (431) is arranged at the top of the cooling zone box module (4), the cooling box (432) is matched with the cooling fan (431), a cooling box air inlet of the cooling box (432) is matched with a cooling fan air outlet of the cooling fan (431), and a cooling box air outlet of the cooling box (432) is communicated with the outside.
6. The hot air oven with the waste heat recovery function according to claim 4, wherein the heating zone box module (2) is provided with a return air duct (212), the burner (231) is communicated with the return air duct (212), and air is supplied to a burner air inlet of the burner (231) through the return air duct (212).
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