Oil quenching furnace oil smoke treatment system and oil quenching furnace

Abstract

The invention relates to the technical field of oil quenching furnaces, in particular to a cooking fume treatment system of an oil quenching furnace and the oil quenching furnace. The oil quenching furnace oil fume treatment system provided by the invention comprises a cold chamber, an oil tank, a nitrogen pipeline, an indoor oil fume filtering device and an outdoor combustion device, an air inlet of the indoor oil smoke filtering device is communicated with the cold chamber through a first pipeline, an exhaust port of the indoor oil smoke filtering device is communicated with the outdoor combustion device through a second pipeline, and a valve is arranged on the first pipeline; and the nitrogen pipeline is used for introducing nitrogen into the cold chamber so as to push oil fume in the cold chamber into the first pipeline after quenching is completed. After quenching of a product is completed, nitrogen is introduced into the cold chamber through the nitrogen pipeline, oil fume in the cold chamber after quenching is completed is pushed into the first pipeline, the oil fume is purified for the first time through the indoor oil fume filtering device, large-particle oil fume is filtered, the filtered oil fume enters the outdoor combustion device through the second pipeline, and remaining oil mist tail gas is burnt out at high temperature; and environmental pollution is effectively avoided.

Description

Technical Field

[0001] The present invention relates to the technical field of oil quenching furnaces, and more particularly to an oil quenching furnace fume treatment system and an oil quenching furnace. Background Art

[0002] With the rapid development of the world, the society's requirements for heat treatment equipment are also getting higher and higher, and the market for vacuum oil quenching furnaces is opening up. The use requirements of vacuum oil quenching furnaces are more stringent and the application fields are more extensive. The traditional design of oil quenching furnaces can no longer meet the use requirements under all working conditions, and new technologies are being widely and closely concerned.

[0003] In the prior art, after the normal oil quenching furnace product is quenched in the oil tank, there will be a large amount of oil fume in the cold chamber. At this time, when the furnace door is opened, the oil fume will be directly released into the factory, which is not conducive to environmental protection. Summary of the Invention

[0004] The purpose of the present invention is to provide an oil quenching furnace fume treatment system and an oil quenching furnace to solve the technical problem that in the prior art, after the normal oil quenching furnace product is quenched in the oil tank, there will be a large amount of oil fume in the cold chamber. At this time, when the furnace door is opened, the oil fume will be directly released into the factory, which is not conducive to environmental protection.

[0005] In a first aspect, the present invention provides an oil quenching furnace fume treatment system, including: a cold chamber, an oil tank, a nitrogen pipeline, an indoor oil fume filtering device, and an outdoor combustion device;

[0006] A furnace door is provided on the cold chamber, the oil tank is connected to the cold chamber and is located at the bottom of the cold chamber and communicates with the cold chamber, and the nitrogen pipeline is connected to the top of the cold chamber;

[0007] The air inlet of the indoor oil fume filtering device is communicated with the cold chamber through a first pipeline, the air outlet of the indoor oil fume filtering device is communicated with the outdoor combustion device through a second pipeline, and a valve is provided on the first pipeline;

[0008] The nitrogen pipeline is used to introduce nitrogen into the cold chamber to push the oil fume in the cold chamber after quenching into the first pipeline.

[0009] In an optional embodiment, the indoor oil fume filtering device includes a housing, a filtering barrel, and an activated carbon filter element;

[0010] The housing includes a top cover, a housing body, legs, and a bracket. The top cover covers the top of the housing body. The legs are provided at the outer bottom of the housing body to support the housing body. The bracket is provided at the inner bottom of the housing body. The side wall of the housing body is provided with the air inlet and the air outlet, and the air inlet and the air outlet are opposite to each other;

[0011] The filter bucket is disposed within the housing, and the filter bucket includes a bucket body and a bucket lid. The bucket body is disposed on the bracket, the bucket lid covers the top of the bucket body, an inlet is provided at the bottom of the bucket body, and an outlet is provided at the top of the side wall of the bucket body. The outlet is communicated with the exhaust port;

[0012] The activated carbon filter element is disposed within the bucket body.

[0013] In an alternative embodiment, the outdoor combustion device includes a combustion cylinder, an igniter, and a natural gas pipeline;

[0014] The exhaust end of the second pipeline penetrates through the bottom of the combustion cylinder and is located within the combustion cylinder, and is capable of supplying the oil fume filtered by the indoor oil fume filtering device to the top of the combustion cylinder;

[0015] The igniter is connected to the natural gas pipeline and is located outside the combustion cylinder opposite to the top of the combustion cylinder.

[0016] In an alternative embodiment, the combustion cylinder includes an outer side wall, an inner side wall, and a cover;

[0017] An oil fume flow channel is formed between the outer side wall and the inner side wall, and the cover is located at the top of the inner side wall;

[0018] The bottom of the inner side wall is communicated with the oil fume flow channel.

[0019] In an alternative embodiment, the outdoor combustion device further includes an air pipeline, and the air outlet end of the air pipeline is annular and sleeved on the top of the combustion cylinder.

[0020] In an alternative embodiment, a natural gas switch valve is provided on the natural gas pipeline, and an air switch valve is provided on the air pipeline;

[0021] The natural gas pipeline is communicated with the air pipeline through a connecting pipeline, and both ends of the connecting pipeline are respectively located upstream of the natural gas switch valve and upstream of the air switch valve;

[0022] A one-way needle valve is provided on the connecting pipeline to enable the natural gas pipeline to supply natural gas to the air pipeline unidirectionally.

[0023] In an alternative embodiment, the outdoor combustion device further includes a connecting plate; the igniter is connected to the combustion cylinder through the connecting plate.

[0024] In an alternative embodiment, the outdoor combustion device further includes a smoke exhaust hood, and the smoke exhaust hood covers the upper part of the combustion cylinder.

[0025] In an alternative embodiment, the nitrogen pipeline is connected to the upper left corner of the cold chamber;

[0026] The first pipeline is connected to the lower right corner of the cold chamber.

[0027] In a second aspect, the present invention provides an oil quenching furnace, including the oil quenching furnace fume treatment system according to any one of the foregoing embodiments.

[0028] Compared with the prior art, the technical advantages of an oil quenching furnace fume treatment system and an oil quenching furnace provided by the present invention are as follows:

[0029] The oil quenching furnace fume treatment system provided by the present invention includes: a cold chamber, an oil tank, a nitrogen pipeline, an indoor fume filtering device, and an outdoor combustion device; a furnace door is provided on the cold chamber, the oil tank is connected to the cold chamber and is located at the bottom of the cold chamber and communicates with the cold chamber, and the nitrogen pipeline is connected to the top of the cold chamber; the air inlet of the indoor fume filtering device communicates with the cold chamber through a first pipeline, the exhaust outlet of the indoor fume filtering device communicates with the outdoor combustion device through a second pipeline, and a valve is provided on the first pipeline; the nitrogen pipeline is used to introduce nitrogen into the cold chamber to push the fume in the cold chamber after quenching into the first pipeline.

[0030] After the product is quenched, nitrogen is introduced into the cold chamber through the nitrogen pipeline to push the fume in the cold chamber after quenching into the first pipeline. The fume is first purified by the indoor fume filtering device, and large particle fume is filtered. The filtered fume enters the outdoor combustion device through the second pipeline, and the remaining oil mist tail gas is burned out at high temperature, effectively avoiding environmental pollution. And when the fume in the cold chamber is replaced and then the furnace door is opened, there will be no fume discharged into the factory, meeting the environmental protection requirements.

[0031] The oil quenching furnace provided by the present invention includes the above-mentioned oil quenching furnace fume treatment system. Therefore, the technical advantages and effects achieved thereby include the technical advantages and effects achieved by the above-mentioned oil quenching furnace fume treatment system, which will not be elaborated in detail here.

[0032] Other features and advantages of the present invention will be described in detail in the subsequent specific embodiment part. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0034] Figure 1 It is a schematic structural diagram of the oil quenching furnace fume treatment system provided by the embodiment of the present invention;

[0035] Figure 2 Cross-sectional view of the indoor oil fume filtering device provided by the embodiment of the present invention;

[0036] Figure 3 Schematic structural diagram of the outdoor combustion device provided by the embodiment of the present invention;

[0037] Figure 4 Cross-sectional view of the outdoor combustion device provided by the embodiment of the present invention.

[0038] Icons: 1 - cold chamber; 2 - oil tank; 3 - nitrogen pipeline; 4 - indoor oil fume filtering device; 5 - outdoor combustion device; 6 - furnace door; 7 - air inlet; 8 - first pipeline; 9 - exhaust port; 10 - second pipeline; 11 - valve; 12 - outer shell; 13 - filter barrel; 14 - activated carbon filter element; 15 - top cover; 16 - housing; 17 - leg; 18 - bracket; 19 - barrel body; 20 - barrel cover; 21 - inlet; 22 - outlet; 23 - combustion cylinder; 24 - igniter; 25 - natural gas pipeline; 26 - outer side wall; 27 - inner side wall; 28 - cover; 29 - oil fume flow channel; 30 - air pipeline; 31 - natural gas switch valve; 32 - air switch valve; 33 - connecting pipeline; 34 - one-way needle valve; 35 - connecting plate. Detailed implementation manners

[0039] The technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0040] In the description of the present invention, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. In addition, the terms "first", "second", "third" are only used for descriptive purposes and cannot be construed as indicating or implying relative importance.

[0041] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, and it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0042] In addition, the technical solutions between various embodiments can be combined with each other, but it must be based on the fact that those of ordinary skill in the art can implement them. When the combination of technical solutions results in contradictions or cannot be implemented, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0043] The present invention will be further described in detail below through specific embodiments in conjunction with the accompanying drawings.

[0044] The specific structure is as Figures 1 to 4 shown.

[0045] This embodiment provides an oil quenching furnace fume treatment system, including: a cold chamber 1, an oil tank 2, a nitrogen pipeline 3, an indoor fume filtering device 4, and an outdoor combustion device 5; a furnace door 6 is provided on the cold chamber 1, the oil tank 2 is connected to the cold chamber 1, and is located at the bottom of the cold chamber 1 and communicates with the cold chamber 1, and the nitrogen pipeline 3 is connected to the top of the cold chamber 1; the air inlet 7 of the indoor fume filtering device 4 communicates with the cold chamber 1 through a first pipeline 8, and the exhaust port 9 of the indoor fume filtering device 4 communicates with the outdoor combustion device 5 through a second pipeline 10, and a valve 11 is provided on the first pipeline 8; the nitrogen pipeline 3 is used to introduce nitrogen into the cold chamber 1 to push the fume in the cold chamber 1 after quenching into the first pipeline 8.

[0046] In this embodiment, after the product is quenched, nitrogen is introduced into the cold chamber 1 through the nitrogen pipeline 3 to push the fume in the cold chamber 1 after quenching into the first pipeline 8. The fume is first purified by the indoor fume filtering device 4, and large particle fume is filtered. The filtered fume enters the outdoor combustion device 5 through the second pipeline 10, and the remaining oil mist tail gas is burned out at high temperature, effectively avoiding environmental pollution. And when the fume replacement in the cold chamber 1 is completed, the furnace door 6 is opened, and no fume will be discharged into the factory, meeting the environmental protection requirements.

[0047] In an alternative technical solution of this embodiment, the indoor oil fume filtering device 4 includes a housing 12, a filtering barrel 13, and an activated carbon filter element 14; the housing 12 includes a top cover 15, a housing body 16, legs 17, and a bracket 18. The top cover 15 is covered on the top of the housing body 16. The legs 17 are arranged at the outer bottom of the housing body 16 for supporting the housing body 16. The bracket 18 is arranged at the inner bottom of the housing body 16. An air inlet 7 and an air outlet 9 are arranged on the side wall of the housing body 16, and the air inlet 7 is opposite to the air outlet 9; the filtering barrel 13 is arranged inside the housing body 16, and the filtering barrel 13 includes a barrel body 19 and a barrel cover 20. The barrel body 19 is arranged on the bracket 18, the barrel cover 20 is covered on the top of the barrel body 19. An inlet 21 is arranged at the bottom of the barrel body 19, and an outlet 22 is arranged at the top of the side wall of the barrel body 19. The outlet 22 is communicated with the air outlet 9; the activated carbon filter element 14 is arranged inside the barrel body 19.

[0048] In this embodiment, the housing 12 can be used by being placed on the ground, and is stably supported by the legs 17. The activated carbon filter element 14 can be replaced by opening the top cover 15 and the barrel cover 20, which is convenient for replacement. At the same time, after the oil fume enters through the air inlet 7, the oil fume flows downward, enters the barrel body 19 through the inlet 21 at the bottom of the barrel body 19, is filtered by the activated carbon filter element 14, and then enters the air outlet 9 through the outlet 22 at the top of the side wall of the barrel body 19. The entire filtering process can effectively ensure thorough filtering.

[0049] However, this embodiment is not limited to this. The indoor oil fume filtering device 4 can also filter without using the activated carbon filter element 14. The activated carbon filter element 14 can be replaced with a coarse filter screen and a fine filter screen. The coarse filter screen and the fine filter screen can also filter large particles in the oil fume, and the structures of the coarse filter screen and the fine filter screen make the fluidity of the oil fume better, ensuring the smoothness during the flow of the oil fume.

[0050] In an alternative technical solution of this embodiment, the outdoor combustion device 5 includes a combustion cylinder 23, an igniter 24, and a natural gas pipeline 25; the exhaust end of the second pipeline 10 penetrates through the bottom of the combustion cylinder 23 and is located inside the combustion cylinder 23, and can supply the oil fume filtered by the indoor oil fume filtering device 4 to the top of the combustion cylinder 23; the igniter 24 is connected to the natural gas pipeline 25 and is located outside the combustion cylinder 23 and opposite to the top of the combustion cylinder 23.

[0051] In this embodiment, the igniter 24 is supplied with natural gas by the natural gas pipeline 25. The igniter 24 can always be in a combustion state, and the igniter 24 is opposite to the top of the combustion cylinder 23, and can always ignite the oil fume supplied to the top of the combustion cylinder 23 by the exhaust end of the second pipeline 10 and filtered by the indoor oil fume filtering device 4, ensuring the sufficiency of oil fume combustion.

[0052] In an alternative technical solution of this embodiment, the combustion cylinder 23 includes an outer sidewall 26, an inner sidewall 27, and a cover 28; an oil fume flow channel 29 is formed between the outer sidewall 26 and the inner sidewall 27, the cover 28 is located at the top of the inner sidewall 27; the bottom of the inner sidewall 27 communicates with the oil fume flow channel 29.

[0053] In this embodiment, since the cover 28 is located at the top of the inner sidewall 27, the oil fume discharged from the exhaust end of the second pipe 10 will flow downward after being blocked by the cover 28, enter the oil fume flow channel 29 from the bottom of the inner sidewall 27 and then flow upward to be ignited by the igniter 24. The structural design of the combustion cylinder 23 can effectively ensure the sufficiency and reliability of the oil fume combustion.

[0054] In an alternative technical solution of this embodiment, the outdoor combustion device 5 further includes an air pipe 30, and the air outlet end of the air pipe 30 is annular and sleeved on the top of the combustion cylinder 23. Compressed air is supplied by the air pipe 30 to improve the combustion effect. At the same time, the air outlet end of the air pipe 30 is annular and sleeved on the top of the combustion cylinder 23 to supply compressed air in the circumferential direction of the combustion cylinder 23 to ensure the uniformity of the combustion effect.

[0055] In an alternative technical solution of this embodiment, a natural gas switch valve 31 is provided on the natural gas pipe 25, and an air switch valve 32 is provided on the air pipe 30; the natural gas pipe 25 is communicated with the air pipe 30 through a connecting pipe 33, and both ends of the connecting pipe 33 are located upstream of the natural gas switch valve 31 and upstream of the air switch valve 32 respectively; a one-way needle valve 34 is provided on the connecting pipe 33 to enable the natural gas pipe 25 to supply natural gas to the air pipe 30 unidirectionally. Natural gas is injected into the air pipe 30 through the natural gas pipe 25, so that the air and natural gas are mixed and then sent to the top of the combustion cylinder 23 and can be ignited, which is more conducive to the ignition and complete combustion of the oil fume.

[0056] In an alternative technical solution of this embodiment, the outdoor combustion device 5 further includes a connecting plate 35; the igniter 24 is connected to the combustion cylinder 23 through the connecting plate 35. Ensure the stability of the position between the igniter 24 and the combustion cylinder 23 and ensure the combustion effect.

[0057] In an alternative technical solution of this embodiment, the outdoor combustion device 5 further includes a smoke exhaust hood, and the smoke exhaust hood covers the upper part of the combustion cylinder 23. The combustion-generated flue gas can be centrally discharged through the smoke exhaust hood. At the same time, the smoke exhaust hood can prevent the interference of rain, snow and strong wind weather on the combustion and ensure the stability of the combustion.

[0058] In an alternative technical solution of this embodiment, the nitrogen pipe 3 is connected to the upper left corner of the cold chamber 1; the first pipe 8 is connected to the lower right corner of the cold chamber 1. Nitrogen enters from the upper left corner of the cold chamber 1 and pushes the oil fume towards the first pipe 8 at the lower left corner of the cold chamber 1, ensuring that the flue gas in the cold chamber 1 can be completely replaced, thereby avoiding environmental pollution.

[0059] An oil quenching furnace provided in this embodiment includes the above-mentioned oil quenching furnace oil fume treatment system. Thus, the technical advantages and effects achieved by this oil quenching furnace include those achieved by the above-mentioned oil quenching furnace oil fume treatment system, which will not be elaborated here.

[0060] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. An oil quenching furnace fume treatment system, characterized in that: include: A cold room (1), an oil tank (2), a nitrogen pipeline (3), an indoor oil fume filtering device (4) and an outdoor combustion device (5); The cold chamber (1) is provided with a furnace door (6), the oil tank (2) is connected to the cold chamber (1), is located at the bottom of the cold chamber (1) and is in communication with the cold chamber (1), and the nitrogen pipeline (3) is connected to the top of the cold chamber (1); The air inlet (7) of the indoor oil fume filtering device (4) is connected to the cold room (1) through a first pipe (8), and the air outlet (9) of the indoor oil fume filtering device (4) is connected to the outdoor combustion device (5) through a second pipe (10), and a valve (11) is provided on the first pipe (8); The nitrogen pipeline (3) is used to introduce nitrogen into the cold chamber (1) so as to push the oil smoke in the cold chamber (1) into the first pipeline (8) after quenching is completed.

2. The oil quenching furnace fume treatment system according to claim 1, characterized in that: The indoor oil fume filtering device (4) comprises a housing (12), a filtering barrel (13) and an activated carbon filter element (14); The housing (12) comprises a top cover (15), a shell (16), a leg (17) and a bracket (18); the top cover (15) is arranged on the top of the shell (16); the leg (17) is arranged on the outer bottom of the shell (16) for supporting the shell (16); the bracket (18) is arranged on the inner bottom of the shell (16); the side wall of the shell (16) is provided with the air inlet (7) and the air outlet (9), and the air inlet (7) is opposite to the air outlet (9); The filter barrel (13) is arranged in the housing (16), and the filter barrel (13) comprises a barrel body (19) and a barrel cover (20), the barrel body (19) is arranged on the bracket (18), the barrel cover (20) is covered on the top of the barrel body (19), the bottom of the barrel body (19) is provided with an inlet (21), the top of the side wall of the barrel body (19) is provided with an outlet (22), and the outlet (22) is communicated with the exhaust port (9); The activated carbon filter element (14) is arranged in the barrel body (19).

3. The oil quenching furnace fume treatment system according to claim 1, characterized in that: The outdoor combustion device (5) comprises a combustion tube (23), an igniter (24) and a natural gas pipeline (25); The exhaust end of the second pipe (10) is arranged through the bottom of the combustion tube (23) and is located inside the combustion tube (23), and is capable of supplying the oil smoke filtered by the indoor oil smoke filtering device (4) to the top of the combustion tube (23); The igniter (24) is connected to the natural gas pipeline (25) and is located outside the combustion tube (23) and opposite to the top of the combustion tube (23).

4. The oil quenching furnace fume treatment system according to claim 3, characterized in that: The combustion cylinder (23) comprises an outer wall (26), an inner wall (27) and a cover (28); An oil smoke flow channel (29) is formed between the outer wall (26) and the inner wall (27), and the sealing cover (28) is located on the top of the inner wall (27); The bottom of the inner wall (27) is in communication with the oil smoke flow channel (29).

5. The oil quenching furnace fume treatment system according to claim 3, characterized in that: The outdoor combustion device (5) further comprises an air duct (30), the air outlet end of the air duct (30) being annular and sleeved on the top of the combustion tube (23).

6. The oil quenching furnace fume treatment system according to claim 5, characterized in that: The natural gas pipeline (25) is provided with a natural gas switch valve (31), and the air pipeline (30) is provided with an air switch valve (32); The natural gas pipeline (25) is connected to the air pipeline (30) via a connecting pipeline (33), and two ends of the connecting pipeline (33) are respectively located upstream of the natural gas switch valve (31) and upstream of the air switch valve (32); The connecting pipeline (33) is provided with a one-way needle valve (34) so ​​that the natural gas pipeline (25) can supply natural gas to the air pipeline (30) in a one-way manner.

7. The oil quenching furnace fume treatment system according to claim 3, characterized in that: The outdoor combustion device (5) further comprises a connecting plate (35); the igniter (24) is connected to the combustion tube (23) via the connecting plate (35).

8. The oil quenching furnace fume treatment system according to claim 3, characterized in that: The outdoor combustion device (5) further comprises a smoke exhaust hood, which is arranged above the combustion tube (23).

9. The oil quenching furnace fume treatment system according to any one of claims 1 to 8, characterized in that: The nitrogen pipeline (3) is connected to the upper left corner of the cold room (1); The first pipe (8) is connected to the lower right corner of the cold room (1).

10. An oil quenching furnace, characterized in that: The oil quenching furnace oil fume treatment system comprises the oil quenching furnace oil fume treatment system according to any one of claims 1 to 9.

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