CN107794679B - Waste heat recovery device of setting machine - Google Patents

Waste heat recovery device of setting machine Download PDF

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Publication number
CN107794679B
CN107794679B CN201711276031.XA CN201711276031A CN107794679B CN 107794679 B CN107794679 B CN 107794679B CN 201711276031 A CN201711276031 A CN 201711276031A CN 107794679 B CN107794679 B CN 107794679B
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Prior art keywords
exhaust
air
pipe
heat exchanger
scraper
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CN107794679A (en
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钱宏
李志勇
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Jiangsu Hengjin Printing And Dyeing Machinery Co ltd
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Jiangsu Hengjin Printing And Dyeing Machinery Co ltd
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Publication of CN107794679A publication Critical patent/CN107794679A/en
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    • DTEXTILES; PAPER
    • D06TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06CFINISHING, DRESSING, TENTERING OR STRETCHING TEXTILE FABRICS
    • D06C7/00Heating or cooling textile fabrics
    • D06C7/02Setting
    • YGENERAL 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
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Heat-Exchange Devices With Radiators And Conduit Assemblies (AREA)

Abstract

The invention provides a waste heat recovery device of a setting machine, which comprises: the exhaust pipe is provided with a plurality of air suction branch pipes and an air exhaust main pipe, one end of each air suction branch pipe is an air suction inlet, the other end of each air suction branch pipe is an air outlet, the air suction inlets are connected with a setting machine, the air outlets are communicated with the air exhaust main pipe, two ends of the air exhaust main pipe are respectively connected with one heat exchanger, the pipe wall of the air exhaust main pipe close to the heat exchanger is respectively provided with one first air suction fan, circulating air and waste gas are subjected to heat exchange in the heat exchangers, and the first port or the second port is connected with the air inlet end of the waste gas. The waste heat recovery device of the setting machine is improved in structure, waste heat treatment is increased, waste heat discharged from the setting machine is reused for heating circulating gas, and besides, a large amount of oil in waste gas is converted into liquid or solid from a gas state in a high temperature state and is reserved in the waste heat recovery device, so that when the waste gas is discharged, the influence on the surrounding environment is small, and air pollution is reduced.

Description

Waste heat recovery device of setting machine
Technical Field
The invention belongs to the technical field of printing and dyeing industry, and particularly relates to a waste heat recovery device of a setting machine.
Background
The waste heat of the existing setting machine cannot be recycled and is generally directly discharged to the atmosphere, so that heat is wasted, and the discharged waste heat contains a large amount of oil, so that the influence on the surrounding environment is great, the air pollution is increased, the indoor and outdoor temperatures nearby are improved, and the waste is great.
Disclosure of Invention
The invention aims to solve the technical problems by providing a waste heat recovery device of a setting machine, overcoming the defects and solving the problems by adding the waste heat recovery device to the setting machine.
In order to solve the technical problems, the invention provides a waste heat recovery device of a setting machine, comprising: comprising the following steps: an exhaust pipe, two first exhaust fans and two heat exchangers,
the exhaust pipe is provided with a plurality of air suction branch pipes and an exhaust main pipe, one end of each air suction branch pipe is an air suction port, the air suction main pipe is provided with a first port and a second port corresponding to the first port, the air suction ports are connected with a setting machine, the air outlets are communicated with the exhaust main pipe, the first port and the second port are respectively connected with a heat exchanger, the pipe wall of the exhaust main pipe close to the heat exchanger is respectively provided with a first exhaust fan,
the heat exchanger is provided with a circulating air inlet end, a circulating air outlet end corresponding to the circulating air inlet end, an exhaust air inlet end and an exhaust air outlet end corresponding to the exhaust air inlet end, circulating air and exhaust air exchange heat in the heat exchanger, and the first port or the second port is connected with the exhaust air inlet end.
As a preferable scheme of the waste heat recovery device of the setting machine, the exhaust main pipe is internally provided with a plurality of first regulating valves for regulating the front-back exhaust proportion,
a second regulating valve for regulating the air quantity of the air suction port is arranged in the air suction branch pipe,
the inlet scoop department is equipped with the stores pylon that is used for fixing first oil receiving dish and is used for placing the filter screen groove of first filter screen, and first oil receiving dish hangs to be established on the stores pylon, first filter screen is inserted and is located in the filter screen groove, first oil receiving dish sets up the below of first filter screen.
As a preferable scheme of the waste heat recovery device of the setting machine, the number of the first regulating valves is 3, and each air suction branch pipe is internally provided with a second regulating valve, a first oil receiving disc and a first filter screen.
As a preferable scheme of the waste heat recovery device of the setting machine, the outer side of the pipe wall of the main air exhaust pipe is covered with a first heat insulation layer except one side adjacent to a drying room of the setting machine.
As a preferable scheme of the waste heat recovery device of the setting machine, the outer side of the first exhaust fan is coated with the second heat preservation layer, and the outer side of the heat exchanger is coated with the third heat preservation layer.
As a preferable scheme of the waste heat recovery device of the setting machine, the heat exchanger is provided with a second exhaust fan and a third exhaust fan, wherein the second exhaust fan is close to the circulating air outlet end, and the third exhaust fan is close to the waste air outlet end.
As a preferable scheme of the waste heat recovery device of the setting machine, the air inlet end of the circulating air is provided with a second filter screen, a baffle plate is arranged below the second exhaust fan, and the circulating air passes through a gap between the second exhaust fan and the baffle plate.
As a preferable scheme of the waste heat recovery device of the setting machine, the heat exchanger is provided with a plurality of circulating air channels and a plurality of waste gas channels, two ends of each circulating air channel are respectively communicated with a circulating air inlet end and a circulating air outlet end, two ends of each waste gas channel are respectively communicated with a waste gas inlet end and a waste gas outlet end, the circulating air channels and the waste gas channels are overlapped, a layer of waste gas channel is arranged between two adjacent layers of circulating air channels,
the bottom of the heat exchanger is provided with a second oil receiving disc.
As a preferable scheme of the waste heat recovery device of the setting machine, the heat exchanger further comprises a steam water pipe, the steam water pipe sprays the steam on a plurality of circulating air channels, each circulating air channel is provided with an oil scraping device, the oil scraping device comprises four scrapers, four rotating shafts and four driving rotating cylinders, each scraper is connected with one rotating shaft, each rotating shaft is connected with one driving rotating cylinder, each scraper comprises a first long scraper, a first short scraper, a second long scraper and a second short scraper, the first long scraper and the first short scraper are respectively arranged on two sides of the steam water pipe, the second long scraper and the second short scraper are respectively arranged on two sides of the steam water pipe, the first long scraper and the second long scraper are arranged in front of and behind, the first short scraper and the second short scraper are arranged in front of and behind, the first long scraper and the first short scraper are provided with a first oil stain channel, and the second long scraper and the second short scraper are provided with a second oil stain channel behind.
As a preferable scheme of the waste heat recovery device of the setting machine, an oil stain extraction pipe and a vacuum oil stain cover are arranged below the heat exchanger, the oil stain extraction pipe is inserted into the vacuum oil stain cover, oil stains in the first oil stain channel and the second oil stain channel flow into the second oil receiving disc and are converged into the vacuum oil stain cover, and the oil stains in the vacuum oil stain cover are extracted out of the heat exchanger through the oil stain extraction pipe.
Compared with the prior art, the waste heat recovery device of the setting machine increases the waste heat treatment by improving the auxiliary structure of the setting machine, so that the waste heat discharged from the setting machine is reused for heating the circulating gas, and besides, a large amount of oil in the waste gas is converted into liquid or solid from the gas state in a high temperature state and is reserved in the waste heat recovery device, and when the waste gas is discharged, the waste heat recovery device has little influence on the surrounding environment and reduces the air pollution.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings that are needed in the description of the embodiments will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art. Wherein,
FIG. 1 is a schematic view of the overall structure of a setting machine according to the present invention;
fig. 2 is a schematic front view of an exhaust pipe of the waste heat recovery device of the setting machine;
FIG. 3 is a schematic top view of an exhaust pipe of the waste heat recovery device of the setting machine;
FIG. 4 is a schematic view of the cross-section of FIG. 2 along B-B;
fig. 5 is a schematic diagram of a front view of a heat exchanger of the waste heat recovery device of the setting machine according to the present invention;
fig. 6 is a schematic top view of a heat exchanger of the waste heat recovery device of the setting machine according to the present invention;
FIG. 7 is a schematic view of the cross-section of FIG. 5 taken along line C-C;
FIG. 8 is a schematic view of a heat exchanger of the heat recovery device of the setting machine according to another embodiment of the present invention;
FIG. 9 is a schematic top view of a heat exchanger of the heat recovery device of the forming machine according to another embodiment of the present invention;
fig. 10 is a schematic side view of another angle of the heat exchanger of the heat recovery device of the setting machine according to the present invention.
Wherein: 1 is an exhaust pipe, 11 is an air suction branch pipe, 111 is an air suction port, 112 is an air outlet, 113 is a second regulating valve, 114 is a hanging rack, 115 is a filter screen groove, 12 is an exhaust main pipe, 121 is a first port, 122 is a second port, 123 is a first regulating valve, 13 is a first heat insulation layer, 2 is a first exhaust fan, 3 is a heat exchanger, 31 is a circulating air inlet end, 32 is a circulating air outlet end, 33 is an exhaust air inlet end, 34 is an exhaust air outlet end, 35 is a second exhaust fan, 36 is a third exhaust fan, 37 is a second oil receiving disc, 38 is a steam water pipe, 391 is a driving rotary cylinder, 392 is a rotary shaft, 393 is a first long scraper, 394 is a first short scraper, 395 is a second long scraper, 396 is a second short scraper, 397 is a first oil stain channel, 398 is a second oil stain channel, 399 is an oil stain extraction pipe, and 400 is a vacuum oil stain cover.
Detailed Description
In order that the above-recited objects, features and advantages of the present invention will become more apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof.
First, reference herein to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic can be included in at least one implementation of the invention. The appearances of the phrase "in one embodiment" in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments.
Next, the present invention will be described in detail by using a schematic structural diagram, etc., and in describing the embodiments of the present invention, for convenience of description, the schematic diagram showing the structure of the waste heat recovery device of the setting machine will not be partially enlarged according to a general scale, and the schematic diagram is merely an example, which should not limit the scope of protection of the present invention herein. In addition, the three-dimensional space of length, width and depth should be included in actual fabrication.
Example 1
Referring to fig. 1, fig. 1 is a schematic general structural diagram of a setting machine according to the present invention, as shown in fig. 1, a waste heat recovery device of the setting machine includes: exhaust duct 1, two first air exhauster 2 and two heat exchangers 3. The outside of the first exhaust fan 2 is covered with a second heat-insulating layer (not shown). This design adopts first air exhauster 2 to place at forming machine business turn over cloth both ends, and high temperature waste gas is by the centre to both ends convulsions, and heat exchanger 3 is respectively connected one at business turn over cloth end. The circulating air heated by the heat exchanger 3 is supplied to a fan (equivalent to a drying room of 1.5 m) at the inlet and outlet of the cloth. The oven has front and rear sections no matter how many sections, so that the high-temperature waste gas can be conveyed to one end nearby, and the conveying distance is reduced.
Referring to fig. 2 and 3, fig. 2 is a schematic front view of an exhaust pipe of the waste heat recovery device of the setting machine according to the present invention; fig. 3 is a schematic plan view of an exhaust pipe of the waste heat recovery device of the setting machine. As shown in fig. 2 and 3, the exhaust pipe 1 has a plurality of air suction branch pipes 11 and an exhaust main pipe 12, one end of the air suction branch pipe 11 is an air suction inlet 111, an air outlet 112 corresponding to the air suction inlet 111, the exhaust main pipe 12 has a first port 121 and a second port 122 corresponding to the first port 121, the air suction inlet 111 is connected with a shaping machine, the air outlet 112 is communicated with the exhaust main pipe 12, the first port 121 and the second port 122 are respectively connected with a heat exchanger 3, and a first exhaust fan 2 is respectively arranged on the pipe wall of the exhaust main pipe 12 close to the heat exchanger 3. The exhaust main pipe 12 is internally provided with a plurality of first regulating valves 123 for regulating the front-rear exhaust proportion, the exhaust branch pipe 11 is internally provided with a second regulating valve 113 for regulating the air quantity of the air suction inlet 111, the air suction inlet 111 is provided with a hanging frame 114 for fixing a first oil receiving disc (not shown) and a filter screen groove 115 for placing a first filter screen (not shown), the first oil receiving disc is hung on the hanging frame 114, the first filter screen is inserted into the filter screen groove 115, and the first oil receiving disc is arranged below the first filter screen. The number of the first regulating valves 123 is 3, and each air suction branch pipe 11 is internally provided with a second regulating valve 113, a first oil receiving disc and a first filter screen. The first regulating valve 123 is used for regulating which end the waste gas is led to, the second regulating valve 113 is used for regulating the air quantity of the air suction inlet, when the temperature of the drying room is high, the internal air is polluted, and the second regulating valve 113 is opened to pump out the waste gas. The exhaust pipe 1 adopts a composite air pipe with a heat preservation function, and a 75-millimeter heat insulation cotton layer is coated outside the air pipe except the side adjacent to the drying room so as to ensure that the heat of high-temperature waste gas enters the heat exchanger 3 as much as possible. Meanwhile, the air pipe in the middle is provided with three flap valves (a first regulating valve 123) to regulate the proportion of the air draft to the cloth feeding direction and the air draft to the cloth discharging direction so as to meet the proportion distribution requirement of heat absorption of the cloth feeding circulating air and the cloth discharging circulating air (figure 2). Such as: each section (3 m) of drying room is distributed with an air suction inlet 111 with the diameter of 330 mm, and the air suction inlet 111 is provided with a valve (a second regulating valve 113) for controlling the air suction amount and a clamping groove (a filter screen groove 115) of a filter screen. The air suction port 111 is positioned inside the drying room and is hung below the main air suction pipe (the main air exhaust pipe 12). A first oil pan may be hung below the suction port 111. The two main exhaust fans (the first exhaust fan 2) are covered with heat insulation cotton on the basis of the original exhaust fans and are directly arranged on the frame of the shaping machine. The high-temperature waste gas sent out by the first exhaust fan 2 directly enters the heat exchanger 3.
Referring to fig. 4, fig. 4 is a schematic sectional view of fig. 2 along B-B. As shown in fig. 4, the wall of the main air exhaust pipe 12 is covered with a first heat insulating layer 13 except one surface adjacent to the drying room of the setting machine, and the outer sides of the walls of the main air exhaust pipes 12 are covered with three surfaces.
Referring to fig. 5 to fig. 7, fig. 5 is a schematic front view of a heat exchanger of a waste heat recovery device of a setting machine according to the present invention; fig. 6 is a schematic top view of a heat exchanger of the waste heat recovery device of the setting machine according to the present invention; fig. 7 is a schematic view of the sectional structure of fig. 5 along C-C. As shown in fig. 5 to 7, the heat exchanger 3 has a circulating air inlet end 31, a circulating air outlet end 32 corresponding to the circulating air inlet end 31, an exhaust air inlet end 33, and an exhaust air outlet end 34 corresponding to the exhaust air inlet end 33, and the circulating air exchanges heat with the exhaust air in the heat exchanger 3, and the first port 121 or the second port 122 is connected to the exhaust air inlet end 33. The outside of the heat exchanger 3 is covered with a third heat-insulating layer (not shown). The heat exchanger 3 is provided with four joint ports of a high-temperature waste gas inlet and a circulating air outlet. The heat exchanger core was welded using 1.5 mm cold gadolinium steel plates (better if 0.9 mm stainless steel plates were used).
The heat exchanger 3 has a second suction fan 35 and a third suction fan 36, the second suction fan 35 being close to the circulation air outlet end 32 and the third suction fan 36 being close to the exhaust air outlet end 34. The heat exchanger exhaust outlet is provided with a third suction fan 36 if the manufacturer has a separate total suction fan. The fan is not required to be arranged, and the hole at the connecting part of the motor is only required to be sealed.
The circulating air inlet end 31 is provided with a second filter screen (not shown), a baffle (not shown) is arranged below the second exhaust fan 35, and circulating air passes through a gap (not shown) between the second exhaust fan 35 and the baffle.
Referring to fig. 8-10, fig. 8 is a schematic front view illustrating another angle of a heat exchanger of the heat recovery device of the setting machine according to the present invention; FIG. 9 is a schematic top view of a heat exchanger of the heat recovery device of the forming machine according to another embodiment of the present invention; fig. 10 is a schematic side view of another angle of the heat exchanger of the heat recovery device of the setting machine according to the present invention. As shown in fig. 8 to 10, the heat exchanger 3 has a plurality of circulating air passages (not shown) and a plurality of exhaust air passages (not shown), both ends of the circulating air passages are respectively communicated with the circulating air inlet end 31 and the circulating air outlet end 32, both ends of the exhaust air passages are respectively communicated with the exhaust air inlet end 33 and the exhaust air outlet end 34, the circulating air passages and the exhaust air passages overlap, a layer of exhaust air passages is arranged between two adjacent layers of circulating air passages, and a second oil receiving disc 37 is arranged at the bottom of the heat exchanger 3. The heat exchanger 3 is directly arranged on the frame of the setting machine, so that redundant heat loss can be avoided, the second oil receiving disc 37 with no opening at the bottom is arranged at the lower part, when the temperature is reduced, grease in the waste gas becomes liquid to flow down, and the outer surfaces of the four air inlet and outlet openings are covered with a heat insulation cotton heat preservation layer with the thickness of 150 mm (figure 6).
The heat exchanger 3 further includes a steam water pipe 38, the steam water pipe 38 sprays steam onto the plurality of circulating air channels, each circulating air channel is provided with a scraping device (not shown), the scraping device comprises four scrapers, four rotating shafts 392 and four driving rotating cylinders 391, each scraper is connected with one rotating shaft 392, each rotating shaft 392 is connected with one driving rotating cylinder 391, each scraper comprises a first long scraper 393, a first short scraper 394, a second long scraper 395 and a second short scraper 396, the first long scraper 393 and the first short scraper 394 are respectively arranged on two sides of the steam water pipe 38, the second long scraper 395 and the second short scraper 396 are respectively arranged on two sides of the steam water pipe 38, the first long scraper 393 and the second long scraper 395 are respectively arranged front and back, the first short scraper 394 and the second short scraper 396 are respectively arranged front and back, a first greasy dirt channel 393 is arranged behind the first long scraper 393 and the first short scraper 394, and a second greasy dirt channel 398 is arranged behind the second long scraper 395 and the second short scraper 396. Each set of heat exchanger cores is provided with a tube for cleaning steam (or water) that can be sprayed, i.e. steam water tube 38. Steam (water) may be sprayed to each layer of the off-gas channel of the plate heat exchanger. Two groups of rotary cleaning scrapers are arranged opposite to the spray pipe, and colloid oil stains deposited on the steel plate can be scraped to the bottom of the heat exchanger box body through the rotation of the scrapers and pumped out through a water pump or manually shoveled out. The rotating blade is driven by a rotating cylinder 391. The water spraying and the rotary dirt scraping are automatically controlled, the interval time is adjustable, and the automatic operation is performed after the adjustment without manual intervention. When the first long blade 393 and the second long blade 395 are operated, the first short blade 394 and the second short blade 396 are not operated, whereas when the first short blade 394 and the second short blade 396 are operated, the first long blade 393 and the second long blade 395 are not operated.
The oil stain extraction pipe 399 and the vacuum oil stain cover 400 are arranged below the heat exchanger 3, the oil stain extraction pipe 399 is inserted into the vacuum oil stain cover 400, a layer of heat exchanger shell is arranged above the second oil receiving disc 37, oil stains in the first oil stain channel 397 and the second oil stain channel 398 flow into the bottom of the heat exchanger shell and are converged into the vacuum oil stain cover 400, and the oil receiving disc has the function of receiving the oil stains when the oil stains in parts above all the oil receiving discs have trace exudation. The oil dirt in the vacuum oil dirt cover 400 is extracted out of the heat exchanger 3 through the oil dirt extracting pipe 399. At the lower part of all the equipment where the exhaust gases enter the heat exchange to the upper circulation part of the exhaust and circulating wind is a completely continuous second oil receiving pan 37 to prevent condensed oil from dripping into the drying room. The oil in the second drip pan 37 is directly discharged through the oil pipe.
The lower part of the heat exchanger core is provided with a short-circuit air passage, when the oil stain content in the waste gas is too large, and the second oil receiving disc 37 is fast full, the short-circuit passage is opened to directly discharge a large amount of waste gas, so that the phenomenon that condensed oil is too much and flows into a drying room due to the cooling of the waste gas is avoided. In normal use, no more than 10% of the total amount of exhaust gas passes through the heat exchanger to heat the bottom plate and prevent the greasy dirt scraped off by the scraper from agglomerating.
In addition, a filter screen is arranged on the top plate of the frame of the circulating air inlet to prevent the flock from entering the heat exchanger 3 (the circulating air channel of the heat exchanger cannot be automatically cleaned). A baffle plate is arranged below the heated circulating air fan to prevent oil dripping, circulating air passes through the middle of the baffle plate, and the baffle plate is connected with the air chamber in a full-welding way.
The contact part of the periphery of the second oil receiving disc 37 and the drying room frame is provided with an auxiliary electric heating belt (two groups of power are adjustable from 1 kilowatt to 4 kilowatt), the auxiliary electric heating belt is arranged below the second oil receiving disc 37, and the auxiliary electric heating belt is adhered to the frame to prevent the pollution of oil mist condensation to cloth caused by the low-temperature parts in the drying room.
It will be appreciated by those skilled in the art that one of the features or objects of the invention is that: the waste heat recovery device of the setting machine is improved, waste heat treatment is added, so that waste heat discharged from the setting machine is reused for heating circulating gas, besides, a large amount of oil in waste gas is converted into liquid or solid from a gas state in a high temperature state and is reserved in the waste heat recovery device, and when the waste gas is discharged, the waste heat recovery device has little influence on the surrounding environment, and reduces air pollution.
It should be noted that the above embodiments are only for illustrating the technical solution of the present invention and not for limiting the same, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solution of the present invention may be modified or substituted without departing from the spirit and scope of the technical solution of the present invention, which is intended to be covered in the scope of the claims of the present invention.

Claims (7)

1. Waste heat recovery device of forming machine, characterized by includes: an exhaust pipe, two first exhaust fans and two heat exchangers,
the exhaust pipe is provided with a plurality of air suction branch pipes and an exhaust main pipe, one end of each air suction branch pipe is an air suction port, the air suction main pipe is provided with a first port and a second port corresponding to the first port, the air suction ports are connected with a setting machine, the air outlets are communicated with the exhaust main pipe, the first port and the second port are respectively connected with a heat exchanger, the pipe wall of the exhaust main pipe close to the heat exchanger is respectively provided with a first exhaust fan,
the heat exchanger is provided with a circulating air inlet end, a circulating air outlet end corresponding to the circulating air inlet end, an exhaust air inlet end and an exhaust air outlet end corresponding to the exhaust air inlet end, the circulating air and the exhaust air exchange heat in the heat exchanger, the first port or the second port is connected with the exhaust air inlet end,
a plurality of first regulating valves for regulating the front-back exhaust proportion are arranged in the exhaust main pipe,
a second regulating valve for regulating the air quantity of the air suction port is arranged in the air suction branch pipe,
the air suction inlet is provided with a hanging frame for fixing a first oil receiving disc and a filter screen groove for placing a first filter screen, the first oil receiving disc is hung on the hanging frame, the first filter screen is inserted into the filter screen groove, the first oil receiving disc is arranged below the first filter screen,
the heat exchanger is provided with a plurality of circulating air channels and a plurality of waste gas channels, two ends of the circulating air channels are respectively communicated with a circulating air inlet end and a circulating air outlet end, two ends of the waste gas channels are respectively communicated with a waste gas inlet end and a waste gas outlet end, the circulating air channels and the waste gas channels are overlapped, a layer of waste gas channel is arranged between two adjacent layers of circulating air channels,
a second oil receiving disc is arranged at the bottom of the heat exchanger,
the heat exchanger further comprises a steam water pipe, the steam water pipe sprays steam on a plurality of circulating air channels, each circulating air channel is provided with an oil scraping device, each oil scraping device comprises four scrapers, four rotating shafts and four driving rotating cylinders, each scraper is connected with one rotating shaft, each rotating shaft is connected with one driving rotating cylinder, each scraper comprises a first long scraper, a first short scraper, a second long scraper and a second short scraper, the first long scraper and the first short scraper are respectively arranged on two sides of the steam water pipe, the second long scraper and the second short scraper are respectively arranged on two sides of the steam water pipe, the first long scraper and the second long scraper are respectively arranged front and back, the first short scraper and the second short scraper are respectively arranged front and back, the rear of the first long scraper and the first short scraper are respectively provided with a first oil stain channel, and the rear of the second long scraper and the second short scraper are respectively provided with a second oil stain channel.
2. The heat recovery device of a setting machine according to claim 1, wherein: the number of the first regulating valves is 3, and each air suction branch pipe is internally provided with a second regulating valve, a first oil receiving disc and a first filter screen.
3. The heat recovery device of a setting machine according to claim 1, wherein: the wall of the main exhaust pipe is provided with a first heat-insulating layer except one surface adjacent to a drying room of the setting machine, and the outer sides of the walls of the main exhaust pipe are coated with three surfaces.
4. The heat recovery device of a setting machine according to claim 1, wherein: the outside cladding of first air exhauster has the second heat preservation, the outside cladding of heat exchanger has the third heat preservation.
5. The heat recovery device of a setting machine according to claim 1, wherein:
the heat exchanger is provided with a second exhaust fan and a third exhaust fan, the second exhaust fan is close to the circulating air outlet end, and the third exhaust fan is close to the waste gas outlet end.
6. The waste heat recovery device of the setting machine according to claim 5, wherein:
the circulating air inlet end is provided with a second filter screen, a baffle is arranged below the second exhaust fan, and circulating air passes through a gap between the second exhaust fan and the baffle.
7. The heat recovery device of a setting machine according to claim 1, wherein: the oil stain extraction pipe and the vacuum oil stain cover are arranged below the heat exchanger, the oil stain extraction pipe is inserted into the vacuum oil stain cover, oil stains in the first oil stain channel and the second oil stain channel flow into the second oil receiving disc and are converged into the vacuum oil stain cover, and the oil stains in the vacuum oil stain cover are extracted out of the heat exchanger through the oil stain extraction pipe.
CN201711276031.XA 2017-12-06 2017-12-06 Waste heat recovery device of setting machine Active CN107794679B (en)

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Application Number Priority Date Filing Date Title
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CN107794679B true CN107794679B (en) 2023-11-10

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