CN114657336B - Cooling structure of protective atmosphere normalizing furnace - Google Patents
Cooling structure of protective atmosphere normalizing furnace Download PDFInfo
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- CN114657336B CN114657336B CN202210263370.9A CN202210263370A CN114657336B CN 114657336 B CN114657336 B CN 114657336B CN 202210263370 A CN202210263370 A CN 202210263370A CN 114657336 B CN114657336 B CN 114657336B
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- valve plate
- reversing valve
- flow passage
- flow channel
- branch flow
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/26—Methods of annealing
- C21D1/28—Normalising
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0062—Heat-treating apparatus with a cooling or quenching zone
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Furnace Details (AREA)
Abstract
The invention discloses a cooling structure of a protective atmosphere normalizing furnace, which comprises a shell, a circulating fan, a cooling device and a reversing valve plate. Wherein, be equipped with the runner in the casing, be equipped with work piece place in the runner. The circulating fan is fixed in the shell, and the air inlet and the air outlet of the circulating fan are communicated with the flow channel so that gas circularly flows in the flow channel. The cooling device is fixed on the flow channel and used for cooling the gas in the flow channel. The reversing valve plate is rotatably arranged in the flow channel, and can change the flow direction of gas in the flow channel so as to change the windward side of the workpiece at the workpiece placement position. Compared with the prior art, the invention changes the windward surface of the workpiece by rotating the reversing valve plate, so that the workpiece is uniformly cooled, and the cooling efficiency and the heat treatment effect are improved.
Description
Technical Field
The invention relates to the technical field of workpiece heat treatment, in particular to a cooling structure of a protective atmosphere normalizing furnace for cooling in the workpiece heat treatment process.
Background
At present, a cooling structure of a normalizing furnace workpiece generally uses directional air flow to cool the workpiece, so that the workpiece is unevenly cooled, and the heat treatment effect is not ideal.
Disclosure of Invention
The invention aims to provide a cooling structure of a protective atmosphere normalizing furnace, which changes the windward surface of a workpiece by rotating a reversing valve plate, so that the workpiece is uniformly cooled, and the cooling efficiency and the heat treatment effect are improved.
In order to achieve the above object, the present invention provides the following solutions:
the invention discloses a cooling structure of a protective atmosphere normalizing furnace, which comprises the following components:
the shell is internally provided with a runner, and a workpiece placement position is arranged in the runner;
the circulating fan is fixed in the shell, and an air inlet and an air outlet of the circulating fan are communicated with the flow channel so that gas circularly flows in the flow channel;
the cooling device is fixed on the flow channel and used for cooling the gas in the flow channel;
the reversing valve plate is rotatably arranged in the flow channel, and the reversing valve plate can change the flow direction of gas in the flow channel so as to change the windward side of the workpiece at the workpiece placement position.
Preferably, the gas temperature measuring device is fixed in the flow channel, and the temperature measuring device is arranged adjacent to the workpiece placement position so as to measure the gas temperature at the workpiece placement position.
Preferably, the flow channel comprises an annular flow channel, a first branch flow channel and a second branch flow channel, and an air outlet of the circulating fan is communicated with the annular flow channel; the first end of the first branch flow passage is communicated with the air inlet of the circulating fan, and the second end of the first branch flow passage is communicated with the annular flow passage; the first end of the second branch flow passage is communicated with the air inlet of the circulating fan, and the second end of the second branch flow passage is communicated with the annular flow passage; the second end of the first branch flow passage and the second end of the second branch flow passage are respectively positioned at two sides of the air outlet of the circulating fan.
Preferably, the reversing valve plate comprises a first reversing valve plate and a second reversing valve plate; the first reversing valve plate is positioned at the joint of the first branch flow passage and the annular flow passage, and is provided with a first position and a second position when rotating; the second reversing valve plate is positioned at the joint of the second branch flow passage and the annular flow passage, and is provided with a third position and a fourth position when rotating; the first reversing valve plate seals the first branch flow passage when in the first position, and the first reversing valve plate seals the annular flow passage when in the second position; the second reversing valve plate seals the second branch flow passage when in the third position, and the second reversing valve plate seals the annular flow passage when in the fourth position.
Preferably, the annular flow passage comprises a first horizontal section, a first vertical section, a second horizontal section and a second vertical section which are connected in sequence, and the first horizontal section is positioned below the second horizontal section; the workpiece placement position is arranged in the first vertical section, and the cooling device is arranged at the first horizontal section; the circulating fan is fixed on the upper portion of the second horizontal section, and the first branch runner and the second branch runner are respectively positioned on the left side and the right side of the circulating fan.
Preferably, the runner further comprises a third branch runner, the left end of the third branch runner is communicated with the second vertical section, the right end of the third branch runner is communicated with the first vertical section, and the right end of the third branch runner is opposite to the position of the workpiece placing position;
the reversing valve plate further comprises a third reversing valve plate, and the third reversing valve plate is positioned at the joint of the third branch flow passage and the second vertical section; the third reversing valve plate has a fifth position and a sixth position when rotated, the third reversing valve plate closes the third branch flow passage when in the fifth position, and the third reversing valve plate closes the second vertical section when in the sixth position.
Preferably, the device further comprises a first driving device, a second driving device, a third driving device and a controller; the first driving device is in transmission connection with the first reversing valve plate so as to drive the first reversing valve plate to rotate; the second driving device is in transmission connection with the second reversing valve plate so as to drive the second reversing valve plate to rotate; the third driving device is in transmission connection with the third reversing valve plate so as to drive the third reversing valve plate to rotate; the first driving device, the second driving device, the third driving device and the circulating fan are all electrically connected with the controller.
Preferably, the cooling device is a water-cooled heat exchanger, and the water-cooled heat exchanger is communicated with the water circulation system so as to enable water in the water-cooled heat exchanger to circulate.
Compared with the prior art, the invention has the following technical effects:
after a workpiece to be cooled is placed in a workpiece placing position, a circulating fan and a cooling device are started, and the circulating fan enables air flow to circularly flow in a flow channel. The air flow exchanges heat with the workpiece and increases the temperature when passing through the workpiece, and exchanges heat with the cooling device and reduces the temperature when passing through the cooling device, so that the temperature of the workpiece is reduced. The reversing valve plate can change the flow direction of air flow, so that the windward surface of the workpiece can be changed, the workpiece is uniformly cooled, and the cooling efficiency and the heat treatment effect are improved.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic view showing a first usage state of a cooling structure of a protective atmosphere normalizing furnace according to the present embodiment;
FIG. 2 is a schematic diagram showing a second usage state of the cooling structure of the protective atmosphere normalizing furnace according to the present embodiment;
FIG. 3 is a schematic view showing a third usage state of the cooling structure of the protective atmosphere normalizing furnace according to the present embodiment;
reference numerals illustrate: 1-a housing; 2-a circulating fan; 3-a cooling device; 4-a first reversing valve plate; 5-a second reversing valve plate; 6-a third reversing valve plate; 7-a water circulation system; 8-a temperature measuring device; 9-work piece.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
The invention aims to provide a cooling structure of a protective atmosphere normalizing furnace, which changes the windward surface of a workpiece by rotating a reversing valve plate, so that the workpiece is uniformly cooled, and the cooling efficiency and the heat treatment effect are improved.
In order that the above-recited objects, features and advantages of the present invention will become more readily apparent, a more particular description of the invention will be rendered by reference to specific embodiments thereof which are illustrated in the appended drawings. In the drawings, the arrow direction, i.e., the flow direction of the air flow, is the hatched area.
Referring to fig. 1 to 3, the present embodiment provides a cooling structure of a protective atmosphere normalizing furnace, which includes a housing 1, a circulating fan 2, a cooling device 3 and a reversing valve plate.
Wherein, be equipped with the runner in the casing 1, be equipped with the work piece in the runner and put the position. The circulating fan 2 is fixed in the shell 1, and an air inlet and an air outlet of the circulating fan 2 are communicated with the flow channel so that gas circularly flows in the flow channel. The cooling device 3 is fixed on the flow channel and is used for cooling the gas in the flow channel. The reversing valve plate is rotatably arranged in the flow channel, and can change the flow direction of gas in the flow channel so as to change the windward side of the workpiece 9 at the workpiece placement position.
The working principle of the cooling structure of the protective atmosphere normalizing furnace is as follows: after the workpiece 9 to be cooled is placed in the workpiece placement position, the circulating fan 2 and the cooling device 3 are started, and the circulating fan 2 makes the air flow circulate in the flow channel. The air flow exchanges heat with the workpiece 9 and increases the temperature when passing through the workpiece 9, and exchanges heat with the cooling device 3 and reduces the temperature when passing through the cooling device 3, so that the workpiece 9 is cooled. The direction of air flow can be changed by the reversing valve plate, so that the windward side of the workpiece 9 can be changed, the cooling of different positions of the workpiece 9 is realized, and the cooling efficiency of the workpiece 9 is improved.
In order to monitor the temperature of the workpiece 9 in real time, in this embodiment, the cooling structure of the protective atmosphere normalizing furnace further includes a temperature measuring device 8 fixed in the flow channel. The temperature measuring device 8 is arranged adjacent to the workpiece placement site to measure the gas temperature at the workpiece placement site. The temperature measuring device 8 can be connected with a display screen arranged outside the shell 1 to display the temperature of the workpiece 9 in real time. In addition, the temperature measuring device 8 may be connected to a controller outside the casing 1, and the controller may control the wind power of the circulating fan 2 by transmitting temperature information to the controller.
The type of the flow passage is various as long as the circulating flow of the air flow can be realized. Referring to fig. 1 to 3, in the present embodiment, the flow passage includes an annular flow passage, a first branch flow passage and a second branch flow passage, and the air outlet of the circulation fan 2 is communicated with the annular flow passage. The first end of the first branch flow passage is communicated with the air inlet of the circulating fan 2, and the second end of the first branch flow passage is communicated with the annular flow passage. The first end of the second branch flow passage is communicated with the air inlet of the circulating fan 2, and the second end of the second branch flow passage is communicated with the annular flow passage. The second end of the first branch flow passage and the second end of the second branch flow passage are respectively positioned at two sides of the air outlet of the circulating fan 2.
Referring to fig. 1 to 3, in the present embodiment, the reversing valve plate includes a first reversing valve plate 4 and a second reversing valve plate 5. The first reversing valve plate 4 is located at the joint of the first branch flow passage and the annular flow passage, and the first reversing valve plate 4 has a first position and a second position when rotating. The second reversing valve plate 5 is located at the joint of the second branch flow channel and the annular flow channel, and the second reversing valve plate 5 has a third position and a fourth position when rotating. The first reversing valve plate 4 closes the first branch flow passage in the first position, and the first reversing valve plate 4 closes the annular flow passage in the second position. The second reversing valve plate 5 closes the second branch flow passage in the third position, and the second reversing valve plate 5 closes the annular flow passage in the fourth position.
Referring to fig. 1, when the first diverting valve plate 4 closes the first diverting flow passage and the second diverting valve plate 5 closes the annular flow passage, the air flow flows counterclockwise, and the air flow does not pass through the first diverting flow passage. At this point, the air flow passes through the workpiece 9 from bottom to top. Referring to fig. 2, when the first diverting valve plate 4 closes the annular flow passage and the second diverting valve plate 5 closes the second branched flow passage, the air flow flows clockwise, and the air flow does not pass through the second branched flow passage. At this time, the air flow passes through the work 9 from top to bottom.
Referring to fig. 1 to 3, in this embodiment, the annular flow channel includes a first horizontal section, a first vertical section, a second horizontal section, and a second vertical section that are sequentially connected, and the first horizontal section is located below the second horizontal section. The workpiece placement position is arranged in the first vertical section, and the cooling device 3 is arranged at the first horizontal section. The circulating fan 2 is fixed on the upper part of the second horizontal section, and the first branch runner and the second branch runner are respectively positioned at the left side and the right side of the circulating fan 2.
Referring to fig. 1 to 3, the flow channel further includes a third branch flow channel, a left end of the third branch flow channel is communicated with the second vertical section, a right end of the third branch flow channel is communicated with the first vertical section, and a right end of the third branch flow channel is opposite to the position of the workpiece placement position. The reversing valve plate further comprises a third reversing valve plate 6, and the third reversing valve plate 6 is positioned at the joint of the third branch flow passage and the second vertical section. The third reversing valve plate 6 has a fifth position and a sixth position when rotated, the third reversing valve plate 6 closing the third branch flow passage in the fifth position, the third reversing valve plate 6 closing the second vertical section in the sixth position.
Referring to fig. 1 to 2, when the circulation fan 2 is operated, the third reversing valve plate 6 closes the third branch flow passage. Referring to fig. 3, when the circulation fan 2 is not in operation, the third reversing valve plate 6 closes the second vertical segment, and the air flow flows counterclockwise and passes through the workpiece 9 from bottom to top, so as to realize self circulation of the air flow.
In order to realize automatic rotation of the reversing valve plate, in the embodiment, the cooling structure of the protective atmosphere normalizing furnace further comprises a first driving device, a second driving device, a third driving device and a controller. The first driving device is in transmission connection with the first reversing valve plate 4 to drive the first reversing valve plate 4 to rotate. The second driving device is in transmission connection with the second reversing valve plate 5 to drive the second reversing valve plate 5 to rotate. The third driving device is in transmission connection with the third reversing valve plate 6 to drive the third reversing valve plate 6 to rotate. The first driving device, the second driving device, the third driving device and the circulating fan 2 are all electrically connected with the controller.
Specifically, the pin shaft can be fixedly connected with the reversing valve plate, and the pin shaft is rotationally connected with the shell 1 through the bearing, so that the reversing valve plate is rotationally connected with the shell 1. The first driving device, the second driving device and the third driving device can be motors, and the rotation of the reversing valve plate can be controlled by the motors by connecting the output shafts of the motors with the pin shafts in a transmission manner.
In this embodiment, the cooling structure of the protective atmosphere normalizing furnace further includes a water circulation system 7, and the cooling device 3 is a water-cooled heat exchanger, and the water-cooled heat exchanger is communicated with the water circulation system 7, so that water in the water-cooled heat exchanger flows circularly. Other types of cooling devices 3 may be chosen by the person skilled in the art, depending on the actual needs.
The principles and embodiments of the present invention have been described in this specification with reference to specific examples, the description of which is only for the purpose of aiding in understanding the method of the present invention and its core ideas; also, it is within the scope of the present invention to be modified by those of ordinary skill in the art in light of the present teachings. In view of the foregoing, this description should not be construed as limiting the invention.
Claims (4)
1. A protective atmosphere normalizing furnace cooling structure, comprising:
the shell is internally provided with a runner, and a workpiece placement position is arranged in the runner;
the circulating fan is fixed in the shell, and an air inlet and an air outlet of the circulating fan are communicated with the flow channel so that gas circularly flows in the flow channel;
the cooling device is fixed on the flow channel and used for cooling the gas in the flow channel;
the reversing valve plate is rotatably arranged in the flow channel, and can change the flow direction of gas in the flow channel so as to change the windward side of the workpiece at the workpiece placement position;
the flow channel comprises an annular flow channel, a first branch flow channel and a second branch flow channel, and an air outlet of the circulating fan is communicated with the annular flow channel; the first end of the first branch flow passage is communicated with the air inlet of the circulating fan, and the second end of the first branch flow passage is communicated with the annular flow passage; the first end of the second branch flow passage is communicated with the air inlet of the circulating fan, and the second end of the second branch flow passage is communicated with the annular flow passage; the second end of the first branch flow passage and the second end of the second branch flow passage are respectively positioned at two sides of the air outlet of the circulating fan;
the reversing valve plate comprises a first reversing valve plate and a second reversing valve plate; the first reversing valve plate is positioned at the joint of the first branch flow passage and the annular flow passage, and is provided with a first position and a second position when rotating; the second reversing valve plate is positioned at the joint of the second branch flow passage and the annular flow passage, and is provided with a third position and a fourth position when rotating; the first reversing valve plate seals the first branch flow passage when in the first position, and the first reversing valve plate seals the annular flow passage when in the second position; the second reversing valve plate seals the second branch flow passage when in the third position, and the second reversing valve plate seals the annular flow passage when in the fourth position;
the annular flow channel comprises a first horizontal section, a first vertical section, a second horizontal section and a second vertical section which are connected in sequence, and the first horizontal section is positioned below the second horizontal section; the workpiece placement position is arranged in the first vertical section, and the cooling device is arranged at the first horizontal section; the circulating fan is fixed at the upper part of the second horizontal section, and the first branch runner and the second branch runner are respectively positioned at the left side and the right side of the circulating fan;
the flow channel further comprises a third branch flow channel, the left end of the third branch flow channel is communicated with the second vertical section, the right end of the third branch flow channel is communicated with the first vertical section, and the right end of the third branch flow channel is opposite to the position of the workpiece placing position;
the reversing valve plate further comprises a third reversing valve plate, and the third reversing valve plate is positioned at the joint of the third branch flow passage and the second vertical section; the third reversing valve plate has a fifth position and a sixth position when rotated, the third reversing valve plate closes the third branch flow passage when in the fifth position, and the third reversing valve plate closes the second vertical section when in the sixth position.
2. The protective atmosphere normalizing furnace cooling structure of claim 1, further comprising a temperature measuring device secured within the flow passage, the temperature measuring device disposed adjacent the workpiece placement site to measure the gas temperature at the workpiece placement site.
3. The protective atmosphere normalizing furnace cooling structure of claim 1, further comprising a first drive, a second drive, a third drive, and a controller; the first driving device is in transmission connection with the first reversing valve plate so as to drive the first reversing valve plate to rotate; the second driving device is in transmission connection with the second reversing valve plate so as to drive the second reversing valve plate to rotate; the third driving device is in transmission connection with the third reversing valve plate so as to drive the third reversing valve plate to rotate; the first driving device, the second driving device, the third driving device and the circulating fan are all electrically connected with the controller.
4. The protective atmosphere normalizing furnace cooling structure of claim 1, further comprising a water circulation system, wherein the cooling device is a water-cooled heat exchanger, and wherein the water-cooled heat exchanger is in communication with the water circulation system to circulate water within the water-cooled heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210263370.9A CN114657336B (en) | 2022-03-17 | 2022-03-17 | Cooling structure of protective atmosphere normalizing furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210263370.9A CN114657336B (en) | 2022-03-17 | 2022-03-17 | Cooling structure of protective atmosphere normalizing furnace |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114657336A CN114657336A (en) | 2022-06-24 |
| CN114657336B true CN114657336B (en) | 2023-04-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202210263370.9A Active CN114657336B (en) | 2022-03-17 | 2022-03-17 | Cooling structure of protective atmosphere normalizing furnace |
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Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2601658C3 (en) * | 1976-01-17 | 1978-11-30 | Fa. J.F. Mahler, 7300 Esslingen | Cooling device for a continuous furnace open on the inlet and outlet side for the heat treatment of workpieces |
| CN201261792Y (en) * | 2008-09-24 | 2009-06-24 | 杭州金舟电炉有限公司 | Isothermal normalizing quick cooling chamber |
| CN202830086U (en) * | 2012-10-12 | 2013-03-27 | 爱协林天捷热处理系统（唐山）有限公司 | Air cooling device for isothermal normalizing furnace |
| CN203373393U (en) * | 2013-06-26 | 2014-01-01 | 南车戚墅堰机车车辆工艺研究所有限公司 | Rapid cooling device for thermal treatment |
| CN107916382B (en) * | 2017-12-14 | 2019-12-06 | 苏州中门子科技有限公司 | diversion jet flow type heat treatment process for aviation or military aluminum material |
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- 2022-03-17 CN CN202210263370.9A patent/CN114657336B/en active Active
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