CN110542106A - Heating furnace oil fume exhaust device and heating furnace oil fume exhaust system - Google Patents
Heating furnace oil fume exhaust device and heating furnace oil fume exhaust system Download PDFInfo
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- CN110542106A CN110542106A CN201910964302.3A CN201910964302A CN110542106A CN 110542106 A CN110542106 A CN 110542106A CN 201910964302 A CN201910964302 A CN 201910964302A CN 110542106 A CN110542106 A CN 110542106A
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- pipe
- heating furnace
- siphon
- transition
- fan
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- 238000010438 heat treatment Methods 0.000 title claims abstract description 79
- 239000003517 fume Substances 0.000 title claims abstract description 53
- 239000000295 fuel oil Substances 0.000 title claims abstract description 22
- 239000003921 oil Substances 0.000 claims abstract description 81
- 239000000779 smoke Substances 0.000 claims abstract description 58
- 239000007789 gas Substances 0.000 claims abstract description 38
- 238000007599 discharging Methods 0.000 claims abstract description 12
- 230000007704 transition Effects 0.000 claims description 53
- 238000007664 blowing Methods 0.000 claims description 49
- 238000007789 sealing Methods 0.000 claims description 20
- 239000006233 lamp black Substances 0.000 claims description 11
- 230000008878 coupling Effects 0.000 claims description 6
- 238000010168 coupling process Methods 0.000 claims description 6
- 238000005859 coupling reaction Methods 0.000 claims description 6
- 238000005452 bending Methods 0.000 claims description 3
- 230000007423 decrease Effects 0.000 claims description 3
- 238000002485 combustion reaction Methods 0.000 abstract description 16
- 230000008021 deposition Effects 0.000 abstract description 5
- 238000010791 quenching Methods 0.000 description 17
- 230000000171 quenching effect Effects 0.000 description 17
- ATUOYWHBWRKTHZ-UHFFFAOYSA-N Propane Chemical compound CCC ATUOYWHBWRKTHZ-UHFFFAOYSA-N 0.000 description 16
- 238000000034 method Methods 0.000 description 8
- 239000001294 propane Substances 0.000 description 8
- 229910000831 Steel Inorganic materials 0.000 description 6
- 229910052799 carbon Inorganic materials 0.000 description 6
- 230000008569 process Effects 0.000 description 6
- 239000000047 product Substances 0.000 description 6
- 239000010959 steel Substances 0.000 description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 5
- 230000009471 action Effects 0.000 description 4
- 125000004432 carbon atom Chemical group C* 0.000 description 4
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 239000002480 mineral oil Substances 0.000 description 2
- 235000010446 mineral oil Nutrition 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 239000004071 soot Substances 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 238000009423 ventilation Methods 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 150000001721 carbon Chemical group 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000005485 electric heating Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000004435 hydrogen atom Chemical class [H]* 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000012466 permeate Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G7/00—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals
- F23G7/06—Incinerators or other apparatus for consuming industrial waste, e.g. chemicals of waste gases or noxious gases, e.g. exhaust gases
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D17/00—Arrangements for using waste heat; Arrangements for using, or disposing of, waste gases
- F27D17/001—Extraction of waste gases, collection of fumes and hoods used therefor
- F27D17/002—Details of the installations, e.g. fume conduits or seals
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23G—CREMATION FURNACES; CONSUMING WASTE PRODUCTS BY COMBUSTION
- F23G2209/00—Specific waste
- F23G2209/14—Gaseous waste or fumes
Abstract
The invention provides a heating furnace fume exhaust device and a heating furnace fume exhaust system, and relates to the field of heat treatment equipment. Compared with the prior art, the heating furnace oil smoke discharging device provided by the invention can avoid direct contact between oil smoke mixed gas and a fan, avoid deposition and leakage of oil smoke in the fan, directly send the oil smoke to a combustion point for combustion, and is safe and clean.
Description
Technical Field
the invention relates to the field of heat treatment equipment, in particular to a heating furnace oil fume exhaust device and a heating furnace oil fume exhaust system.
Background
In the heat treatment technology, a heat treatment workpiece falls into a quenching tank from a heating furnace for quenching treatment, oil on the inner surface of the quenching tank can be decomposed or vaporized into oil fume due to high temperature, the oil fume can enter the heating furnace along a channel through which the workpiece falls, the main component of the quenching oil is mineral oil, a large amount of carbon atoms are contained in the quenching oil, and the quenching oil can cause over-high local carbon content after entering the heating furnace, so that the accurate judgment of a sensor is influenced, the carbon atoms in the heating furnace are not distributed uniformly or are distorted, and the product quality is influenced. Therefore, oil fume generated by workpiece quenching must be discharged in time.
In the prior art, a fan suction inlet is usually directly connected with an oil smoke generating part, and a fan air outlet is arranged in a pipe and sent to a combustion point to be burnt. The mixed gas of oil smoke and furnace gas is directly pumped to a combustion point through a fan, and the precision of the fan manufacturer in China is difficult to control at present, so that the fan has a certain probability that the sealing of an air box is poor, the mixed gas is leaked, or air is sucked into the fan to cause explosion. In addition, as the mixed gas contains oil smoke, the oil smoke or carbon deposit is slowly deposited in the gap between the rotating shaft of the fan and the bearing when the mixed gas passes through the fan, and the fan is easy to be blocked and damaged once the fan is started again after being stopped; in addition, after the oil fume purifier is used for a long time, oil vapor in the oil fume can be condensed in a blower box of the blower, and can flow outside along the position with poor sealing of the blower after the long time, so that pollution is caused.
Disclosure of Invention
The invention aims to provide an oil fume exhaust device of a heating furnace, which can avoid direct contact between oil fume mixed gas and a fan, avoid the deposition phenomenon and the leakage phenomenon of oil fume in the fan, directly send the oil fume to a combustion point for combustion, and is safe and clean.
Another objective of the present invention is to provide a heating furnace oil smoke discharging system, which can directly send oil smoke to a combustion point for combustion, avoid direct contact with a fan, and is safe and clean.
The invention is realized by adopting the following technical scheme.
The utility model provides a heating furnace oil smoke discharging device, includes oil smoke conveyer pipe, transition pipe, fan and siphon, the one end of oil smoke conveyer pipe is used for connecting the heating furnace, the other end with the transition union coupling, the siphon sets up the top of transition pipe to communicate with the outside, the air outlet department of fan is provided with the gas blow pipe, the gas blow pipe stretches into the transition pipe and towards the siphon extends, be used for to the siphon blows and with the intraductal gas escape of transition.
Further, the transition pipe comprises a main pipe and a restriction pipe arranged at the top of the main pipe, the siphon pipe is arranged at the upper part of the restriction pipe, the pipe diameter of the lower part of the restriction pipe is the same as that of the main pipe, the pipe diameter of the upper part of the restriction pipe is the same as that of the siphon pipe, and the air blowing pipe extends upwards from the bottom of the main pipe to the restriction pipe.
Further, the diameter of the siphon is smaller than that of the main body pipe and larger than that of the blowing pipe.
Further, the air blowing pipe extends upwards to the middle of the restriction pipe.
Further, the pipe diameter of the restriction pipe decreases from one end close to the main pipe to one end close to the siphon pipe.
Further, the bottom of the main body pipe is provided with a sealing end cover, the air blowing pipe penetrates through the sealing end cover and extends upwards, and the air blowing pipe is connected with the sealing end cover in a sealing mode.
Further, the transition pipe, the siphon pipe and the blowing pipe are all concentrically arranged.
Further, the oil smoke conveyer pipe includes conveyer pipe body and coupling, the conveyer pipe body with the middle part of transition pipe is connected, the coupling sets up the department of bending of conveyer pipe body, just be provided with the end cap on the coupling.
Furthermore, one end of the air blowing pipe close to the air outlet is provided with an air blowing valve.
The utility model provides a heating furnace oil smoke discharging system, includes heating furnace and heating furnace oil smoke discharging device, and heating furnace oil smoke discharging device includes oil smoke conveyer pipe, transition pipe, fan and siphon, the heating furnace is connected to the one end of oil smoke conveyer pipe, the other end with the transition union coupling, the siphon sets up the top of transition pipe to with outside intercommunication, the air outlet department of fan is provided with the gas blow pipe, the gas blow pipe stretches into the transition pipe and towards the siphon extends, be used for to the siphon blows.
The invention has the following beneficial effects:
According to the heating furnace oil fume exhaust device provided by the invention, the siphon is arranged at the top end of the transition pipe and is communicated with the outside, and the air blowing pipe arranged at the air outlet of the fan extends into the transition pipe and extends towards the siphon. When the electric heating furnace is in actual use, the fan is started, the air is blown towards the siphon pipe through the air blowing pipe, the air in the siphon pipe is discharged outwards quickly, local negative pressure is formed by high-speed airflow generated by the fan under the action of a siphon principle, and the air in the transition pipe is supplemented into the siphon pipe quickly, so that the air in the transition pipe is taken away quickly, and oil smoke gas in the heating furnace is sucked out through the oil smoke conveying pipe. Because the fan only realizes the blowing function through the blowing pipe, the oil fume is discharged for burning after being directly pumped into the siphon pipe through the transition pipe, so the fan can not be in direct contact with the oil fume, the oil fume is prevented from being deposited in the fan, and the phenomenon of fume leakage at the fan is also avoided. Compared with the prior art, the heating furnace oil smoke discharging device provided by the invention can avoid direct contact between oil smoke mixed gas and a fan, avoid deposition and leakage of oil smoke in the fan, directly send the oil smoke to a combustion point for combustion, and is safe and clean.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
Fig. 1 is a schematic overall structure diagram of a heating furnace fume exhaust device according to a first embodiment of the present invention at a first viewing angle;
FIG. 2 is a schematic view of a portion of the fume extractor of the heating furnace of FIG. 1;
Fig. 3 is a schematic overall structural diagram of a heating furnace fume exhaust device according to a first embodiment of the present invention at a second viewing angle;
FIG. 4 is a schematic view of a portion of the fume extractor of the heating furnace of FIG. 3;
Fig. 5 is a schematic view of an installation structure of a heating furnace fume exhaust system according to a second embodiment of the present invention.
Icon: 100-a heating furnace oil fume exhaust device; 110-oil smoke conveying pipe; 111-a duct body; 113-a pipe joint; 115-plug; 117-gas delivery valve; 130-a transition tube; 131-a main tube; 133-a restriction pipe; 135-sealing the end cap; 150-a fan; 170-siphon; 190-an air blowing pipe; 191-a gas blowing valve; 200-heating furnace.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. The components of embodiments of the present invention generally described and illustrated in the figures herein may be arranged and designed in a wide variety of different configurations.
Thus, the following detailed description of the embodiments of the present invention, presented in the figures, is not intended to limit the scope of the invention, as claimed, but is merely representative of selected embodiments of the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures.
In the description of the present invention, it should be noted that the terms "center", "upper", "vertical", "horizontal", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings or the orientations or positional relationships conventionally put on the products of the present invention when used, and are only used for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the devices or elements referred to must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used merely to distinguish one description from another, and are not to be construed as indicating or implying relative importance.
in the description of the present invention, it should also be noted that, unless otherwise explicitly specified or limited, the terms "disposed," "connected," "mounted," and "connected" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
as mentioned in the background art, the heat-treated parts fall into a quenching tank from a heating furnace (the temperature in the furnace is about 900 ℃ and the furnace is filled with combustible reducing atmosphere hydrogen, carbon monoxide, propane and the like) to be quenched, and the quenching process is carried out in a space isolated from the atmosphere, so that the workpieces are prevented from being oxidized in the whole heat treatment process to cause unqualified product quality, and the quenching process is carried out. The heating furnace is used for providing a high-temperature environment for the steel product, then propane is introduced into the heating furnace, the steel is carburized by utilizing the principle that carbon atoms in the propane can permeate into the surface of the steel at high temperature, and then the steel is quenched by falling into quenching oil to finish the transformation of steel structure, so that the transformation of the wear resistance and hardness of the surface and the interior of the steel product is promoted, and the main process of the heat treatment is realized. The process has a key factor to be controlled, namely the content of propane in the heating furnace is controlled, when the content of propane is too high, the surface of a workpiece is carburized too much, and the quenched workpiece is easy to crack or too high in hardness and is not suitable for later mechanical processing; if the content of propane is lower, the surface of the workpiece after quenching is softer, and the use requirement cannot be met. The control of the propane feeding amount is to detect the carbon content in the heating furnace through a sensor, so that the feeding of propane is accurately controlled. When a high-temperature workpiece falls into a quenching tank filled with quenching oil, oil on the inner surface of the quenching tank can be decomposed or vaporized into oil fume due to high temperature, the oil fume can enter a heating furnace along a channel through which the workpiece falls, and the oil fume contains a large amount of carbon atoms because the main component of the quenching oil is mineral oil, so that the local carbon content is too high after entering the heating furnace, the accurate judgment of a sensor is influenced, the carbon atom distribution in the heating furnace is uneven or distorted, and the product quality is influenced. Therefore, oil fume generated by workpiece quenching must be discharged in time.
The existing exhaust method is to connect the oil smoke generating part by using the air suction inlet of the fan, and the air outlet of the fan is arranged in a pipe and sent to a burning point to be burnt. The mixed gas of oil smoke and furnace gas is directly pumped to a combustion point through a fan, and the precision of the fan manufacturer in China is difficult to control at present, so that the fan has a certain probability that the sealing of an air box is poor, the mixed gas is leaked, or air is sucked into the fan to cause explosion. The mixed gas contains oil smoke, the oil smoke or carbon deposit is slowly deposited in a gap between a rotating shaft of the fan and the bearing when the mixed gas passes through the fan, and the fan is easy to be blocked once the fan is started again after being stopped, so that the fan is damaged; in addition, after the oil fume purifier is used for a long time, oil vapor in the oil fume can be condensed in a blower box of the blower, and can flow outside along the position with poor sealing of the blower after the long time, so that pollution is caused.
According to the heating furnace oil smoke discharging device, oil smoke gas in a pipeline is directly discharged by utilizing a siphon principle, so that direct contact between a fan and the oil smoke gas is avoided, the phenomena of leakage and oil smoke deposition in the fan caused by poor sealing performance of the fan are avoided, the oil smoke can be directly sent to a combustion point for combustion, and the heating furnace oil smoke discharging device is safe and clean.
Some embodiments of the invention are described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.
First embodiment
referring to fig. 1 to 4 in combination, the present embodiment provides a heating furnace oil smoke exhaust device 100, which includes an oil smoke conveying pipe 110, a transition pipe 130, a fan 150, and a siphon 170, wherein one end of the oil smoke conveying pipe 110 is used for connecting a heating furnace 200, and the other end is connected to the transition pipe 130, the siphon 170 is disposed at the top end of the transition pipe 130 and is communicated with the outside, an air blowing pipe 190 is disposed at an air outlet of the fan 150, and the air blowing pipe 190 extends into the transition pipe 130 and extends toward the siphon 170 for blowing air into the siphon 170 and exhausting air in the transition pipe 130.
In this embodiment, the blower 150 is fixedly mounted on the heating furnace 200 through a mounting bracket and is located below the transition pipe 130, the blowpipe 190 is disposed at the air outlet of the blower 150 and is inserted from below the transition pipe 130, and the portion of the blowpipe 190 extending into the transition pipe 130 extends upward to below the siphon pipe 170.
In actual use, the fan 150 is started, the air is blown towards the siphon 170 through the air blowing pipe 190, the air in the siphon 170 is rapidly discharged outwards, local negative pressure is formed by high-speed airflow generated by the fan 150 under the action of a siphon principle, and the air in the transition pipe 130 is rapidly supplemented towards the siphon 170, so that the air in the transition pipe 130 is rapidly taken away, and the oil smoke gas in the heating furnace 200 is sucked out through the oil smoke conveying pipe 110.
In this embodiment, the oil fume is directly ignited at the outlet of the siphon tube 170 to form a continuous combustion point, so that the oil fume is completely combusted, and the direct discharge into the external environment to cause pollution is avoided. Of course, other methods of oil smoke treatment are possible, for example, a range hood is provided at the outlet of the siphon tube 170 to absorb the oil smoke.
In this embodiment, the length of the siphon pipe 170 is between 15 cm and 30cm, which can ensure the siphon function.
In this embodiment, an air blowing valve 191 is further disposed at an end of the air blowing pipe 190 close to the air outlet. Specifically, the air blowing valve 191 is a ball valve, and the on-off of the air blowing pipe 190 and the size of the air blowing amount are controlled through the air blowing valve 191, so that the air suction strength to the transition pipe 130 and the oil smoke conveying pipe 110 can be adjusted.
The transition pipe 130 comprises a main pipe 131 and a restriction pipe 133 arranged at the top of the main pipe 131, the siphon pipe 170 is arranged at the upper part of the restriction pipe 133, the lower part of the restriction pipe 133 has the same pipe diameter as the main pipe 131, the upper part of the restriction pipe 133 has the same pipe diameter as the siphon pipe 170, and the blowing pipe 190 extends upwards from the bottom of the main pipe 131 to the restriction pipe 133.
In this embodiment, the siphon tube 170 has a tube diameter smaller than that of the main tube 131 and larger than that of the blow tube 190. By adopting the arrangement mode, a certain ventilation ring cavity is formed around the blowing pipe 190, when the blowing pipe 190 blows out high-speed airflow, local negative pressure is formed at the ventilation ring cavity under the siphon action, and the oil fume in the main pipe 131 can be quickly supplemented to the siphon pipe 170 and discharged, so that the air can be more efficiently discharged. Preferably, the pipe diameter of the siphon pipe 170 is 2/3 of the pipe diameter of the main pipe 131, and the pipe diameter of the blowing pipe 190 is 5/6 of the pipe diameter of the siphon pipe 170, so that the pipe diameter of the siphon pipe 170 is slightly larger than the blowing pipe 190 and is far smaller than the main pipe 131.
In this embodiment, the blowpipe 190 extends up to the middle of the reducer pipe 133. Specifically, the distance between the port of the blowing pipe 190 and the siphon pipe 170 is 1/3-2/3 of the length of the restriction pipe 133, so that a better blowing effect can be achieved.
In the present embodiment, the diameter of the restriction pipe 133 decreases from the end near the main pipe 131 to the end near the siphon pipe 170. Preferably, the restriction pipe 133 is in an inverted trumpet shape, and the sealing welding is performed between the restriction pipe 133 and the main pipe 131 and between the restriction pipe 133 and the siphon pipe 170, so as to avoid the leakage phenomenon.
The bottom of the main tube 131 is provided with a sealing end cap 135, the blowing pipe 190 passes through the sealing end cap 135 and extends upwards, and the blowing pipe 190 is connected with the sealing end cap 135 in a sealing way. Specifically, the outer circumferential surface of the blowing pipe 190 and the sealing end cap 135 are hermetically welded to each other by being integrally disposed at the bottom of the main body pipe 131, so that the leakage phenomenon can be prevented.
In this embodiment, the transition duct 130, siphon tube 170 and blowpipe 190 are all concentrically arranged. Through the concentric arrangement of the pipes, the gas flow is uniformly distributed when flowing in the transition pipe 130 and the siphon pipe 170, and the local turbulence phenomenon is avoided.
The lampblack conveying pipe 110 comprises a conveying pipe body 111 and a pipe joint 113, the conveying pipe body 111 is connected with the middle of the transition pipe 130, the pipe joint 113 is arranged at the bending position of the conveying pipe body 111, and a plug 115 is arranged on the pipe joint 113. Specifically, the duct body 111 is divided into a plurality of sections, and the plurality of sections are bent to each other, so that the soot generated at the soot generating port of the heating furnace 200 can be conveyed to the transition duct 130 and discharged to the outside by a siphon action. The pipe joint 113 is arranged at the position of the two adjacent sections of the conveying pipe bodies 111, the plug 115 is arranged on the pipe joint 113, when the device is not used, the plug 115 is disassembled, oil smoke scale substances attached to the wall of the rock-soil pipe can be cleaned, and the conveying pipe bodies 111 are kept from being blocked.
In this embodiment, the gas delivery valve 117 is disposed on the delivery pipe body 111, and the gas delivery pipe is opened and closed through the gas delivery valve 117, so that the direct discharge of oil fume can be avoided when the fan 150 is maintained or replaced, and in addition, when the vehicle is stopped, the external air and impurities can be prevented from entering the heating furnace 200 along the delivery pipe body 111.
In summary, in the heating furnace oil smoke exhaust device 100 provided by this embodiment, the air blowing pipe 190 is connected to the air outlet of the fan 150, and is inserted into the transition pipe 130, the siphon pipe 170 with a pipe diameter larger than that of the air blowing pipe 190 and smaller than that of the transition pipe 130 is welded at the top end of the transition pipe 130, and the transition pipe 130 is connected to the oil smoke conveying pipe 110 for conveying oil smoke gas. The working principle is as follows: when the oil smoke needs to be discharged, the fan 150 is turned on, air flows upwards from the air blowing pipe 190 at a certain flow rate, the siphon pipe 170 is blown, high-speed air like the outside is filled in the siphon pipe 170, and thus local negative pressure is generated at the annular part between the top end of the air blowing pipe 190 and the transition pipe 130, the air in the transition pipe 130 is driven to flow outwards, and the oil smoke mixed gas in the furnace is pumped out and is combusted at the outlet of the siphon pipe 170. The heating furnace lampblack exhaust device 100 provided by the embodiment is provided with the air blowing pipe 190 and sucks the lampblack gas in the transition pipe 130 by utilizing the siphon principle, so that the lampblack gas is prevented from directly contacting with the fan 150, deposition and leakage of the lampblack in the fan 150 are prevented, leakage or external air suction at the fan 150 is also avoided, the lampblack gas can be directly sent to a combustion position for combustion, and the heating furnace lampblack exhaust device is safe and clean. The whole process has no contact between the oil fume mixed gas and the fan 150, and the oil fume has no leakage point, so that the oil fume is safe and clean. And negative pressure is generated by using a siphon principle to suck away the oil-smoke mixed gas, so that the power requirement on the fan 150 is much smaller than that on the condition that the fan 150 is used for directly conveying.
Second embodiment
referring to fig. 5, the present embodiment provides an oil fume exhausting system for a heating furnace 200, which comprises the heating furnace 200 and an oil fume exhausting device 100 for the heating furnace, wherein the basic structure and principle of the heating furnace 200 and the technical effects thereof are the same as those of the first embodiment, and for the sake of brief description, reference may be made to the corresponding contents of the first embodiment where no part is mentioned in the present embodiment.
The heating furnace oil smoke discharging device 100 comprises an oil smoke conveying pipe 110, a transition pipe 130, a fan 150 and a siphon pipe 170, wherein one end of the oil smoke conveying pipe 110 is connected with a heating furnace 200, the other end of the oil smoke conveying pipe is connected with the transition pipe 130, the siphon pipe 170 is arranged at the top end of the transition pipe 130 and is communicated with the outside, an air blowing pipe 190 is arranged at an air outlet of the fan 150, and the air blowing pipe 190 extends into the transition pipe 130 and extends towards the siphon pipe 170 for blowing air to the siphon pipe 170.
Although the heating furnace 200 is used as the fume exhaust target in the present embodiment, the present invention is not limited thereto, and any heat treatment furnace body that generates fume is within the scope of the present invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. The utility model provides a heating furnace oil smoke discharging device, its characterized in that, includes oil smoke conveyer pipe, transition pipe, fan and siphon, the one end of oil smoke conveyer pipe is used for connecting the heating furnace, the other end with the transition union coupling, the siphon sets up the top of transition pipe to communicate with the outside, the air outlet department of fan is provided with the gas blow pipe, the gas blow pipe stretches into the transition pipe and towards the siphon extends, be used for to the siphon blows and will gas outgoing in the transition pipe.
2. The heating furnace oil fume exhaust device according to claim 1, wherein the transition pipe comprises a main pipe and a restriction pipe arranged at the top of the main pipe, the siphon pipe is arranged at the upper part of the restriction pipe, the lower part of the restriction pipe has the same pipe diameter as the main pipe, the upper part of the restriction pipe has the same pipe diameter as the siphon pipe, and the blowing pipe extends upwards from the bottom of the main pipe to the restriction pipe.
3. A heating furnace lampblack exhaust device according to claim 2, wherein the pipe diameter of the siphon is smaller than that of the main body pipe and larger than that of the blowing pipe.
4. The heating furnace lampblack exhaust device as claimed in claim 3, wherein the air blowing pipe extends upwards to the middle of the restriction pipe.
5. The heating furnace fume exhaust device according to claim 2, wherein the diameter of the restriction pipe decreases from an end close to the main pipe to an end close to the siphon pipe.
6. The heating furnace lampblack discharging device as claimed in claim 2, wherein the bottom of the main body pipe is provided with a sealing end cover, the air blowing pipe penetrates through the sealing end cover and extends upwards, and the air blowing pipe is connected with the sealing end cover in a sealing mode.
7. The heating furnace fume exhaust device according to claim 1, wherein the transition pipe, the siphon pipe and the blow pipe are all concentrically arranged.
8. A heating furnace fume exhaust device according to claim 1, wherein the fume conveying pipe comprises a conveying pipe body and a pipe joint, the conveying pipe body is connected with the middle part of the transition pipe, the pipe joint is arranged at a bending part of the conveying pipe body, and a plug is arranged on the pipe joint.
9. The heating furnace lampblack exhaust device as claimed in claim 1, wherein an air blowing valve is arranged at one end, close to the air outlet, of the air blowing pipe.
10. A heating furnace fume exhaust system, characterized by comprising a heating furnace and the heating furnace fume exhaust device according to any one of claims 1 to 9, wherein the fume conveying pipe is connected with the heating furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910964302.3A CN110542106A (en) | 2019-10-11 | 2019-10-11 | Heating furnace oil fume exhaust device and heating furnace oil fume exhaust system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114383431A (en) * | 2021-12-23 | 2022-04-22 | 响水德丰金属材料有限公司 | Flue gas waste heat utilization process for 304 stainless steel production |
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| CN2386352Y (en) * | 1999-06-09 | 2000-07-05 | 唐长华 | Injection cooker hood |
| CN201522021U (en) * | 2009-05-26 | 2010-07-07 | 李凤咏 | Vimala oil-fume exhaust |
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| CN114383431A (en) * | 2021-12-23 | 2022-04-22 | 响水德丰金属材料有限公司 | Flue gas waste heat utilization process for 304 stainless steel production |
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