CN217230842U

CN217230842U - Radiation heating type annealing and aging furnace

Info

Publication number: CN217230842U
Application number: CN202122982006.1U
Authority: CN
Inventors: 王建新
Original assignee: Jiangyin Zhonghe Energy Saving Technology Co ltd
Current assignee: Jiangyin Zhonghe Energy Saving Technology Co ltd
Priority date: 2021-11-30
Filing date: 2021-11-30
Publication date: 2022-08-19
Anticipated expiration: 2031-11-30

Abstract

The utility model discloses a radiant heating formula annealing, ageing furnace, annealing, ageing furnace is the cuboid structure, annealing, ageing furnace includes in the studio and sets up the heating chamber on studio upper portion, be equipped with heating unit in the heating chamber, lateral wall and top at the studio are equipped with air intake and return air inlet respectively, heating unit includes gas nozzle and a burner, the one end and the heat exchanger of a burner are connected, heat exchanger comprises a plurality of coil pipes, the one end of coil pipe is connected with the burner of installation gas nozzle, the other end setting of coil pipe is at annealing, ageing furnace's outside, the middle part of coil pipe sets up the inside at heat exchanger, heat exchanger is in the pipeline that is linked together with air intake and return air inlet, still be equipped with the impeller of fan in the heating chamber. The annealing and aging furnace has the characteristics of safe heating, good heating uniformity, high heating efficiency, easy regulation and control of heating temperature, easy control of heating position, convenient feeding and discharging of the heated material from the heating furnace, automatic control of the heated material, and the like.

Description

Radiation heating type annealing and aging furnace

Technical Field

The utility model relates to the technical field of metal heat treatment equipment, in particular to a radiation heating type annealing and aging furnace.

Background

The annealing or aging treatment furnace is used for metal heat treatment, internal stress and component segregation easily exist in the aluminum alloy product after the aluminum alloy is extruded, the metallographic structure in the aluminum alloy product is changed by controlling the temperature in the annealing or aging treatment furnace, the internal stress and the component segregation of the aluminum alloy product can be eliminated to a certain extent, and the quality of the aluminum alloy product is improved. For annealing and aging treatment of batch or special aluminum alloy, how to carry out annealing and aging treatment on aluminum profiles of various brands according to various annealing and aging processes is the problem to be solved by the batch annealing and aging treatment at present. The existing annealing or aging treatment furnace adopts a direct-fired heating structure for heating air by using fuel gas, and has the defects that air is in direct contact with flame, sparks are easily brought into a working chamber, and if the material to be heated in the working chamber is aluminum magnesium alloy, the sparks in hot air can cause the combustion of the aluminum magnesium alloy.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the defect that exists among the prior art, provide one kind to have heating safety, heating uniformity good, heating efficiency is high, heating temperature easily regulates and control by the heat treatment material, the heating position is easily controlled, it is convenient by heating material advance, go out the heating furnace, conveying efficiency is high, the radiant heating formula annealing, the ageing furnace that accessible automatic control accomplished.

In order to realize the above-mentioned purpose, the technical scheme of the utility model provides a radiant heating formula annealing, ageing furnace, annealing, ageing furnace is the cuboid structure, annealing, ageing furnace includes in the studio and sets up the heating chamber on studio upper portion, be equipped with heating unit in the heating chamber, lateral wall and top at the studio are equipped with air intake and return air inlet respectively, heating unit includes gas nozzle and a combustion tube, the one end and the heat exchanger of combustion tube are connected, heat exchanger comprises a plurality of coil pipes, the one end of coil pipe is connected with the combustion tube of installation gas nozzle, the other end setting of coil pipe is at annealing, ageing furnace's outside, the middle part of coil pipe sets up the inside at heat exchanger, heat exchanger is in the pipeline that is linked together with air intake and return air inlet, still be equipped with the impeller of fan in the heating chamber.

In order to simplify the structure of the heat exchanger, reduce the processing and manufacturing cost of the heat exchanger and reduce the volume in the heating chamber, the technical proposal is that at least one heat exchanger is arranged in the heating chamber, and preferably 2 heat exchangers connected in parallel can be arranged.

In order to facilitate the conveying of the material frames, facilitate the installation and maintenance of the transmission shaft and facilitate the improvement of the conveying efficiency of the material frames, the preferable technical scheme is that a material frame conveying mechanism is arranged in the working chamber, the material frame conveying mechanism comprises a driving shaft and a plurality of transmission shafts, the driving shaft is an output shaft of a driving motor, and the driving shaft is connected with the plurality of transmission shafts through a chain wheel, a transmission chain or a belt wheel and a transmission belt; wherein, the one end setting of transmission shaft is outside at the studio, and the other end setting of transmission shaft is inside the studio, and the transmission shaft passes through bearing, bearing frame and supports respectively in the inside and the outside of studio, and the material frame is placed on the transmission shaft, and the transmission shaft setting is in the bottom of studio.

In order to facilitate the conveying of the material frames, the transmission shafts are installed and maintained, the conveying efficiency of the material frames is improved, and the transmission shafts are arranged in two rows in the length direction in the working chamber.

In order to prolong the service life of the transmission shaft, the preferable technical scheme is that a transmission sleeve is arranged on the transmission shaft in the working chamber, supporting bearings are arranged at two ends of the transmission sleeve, the transmission shaft and the transmission shaft are in transmission through a transmission chain and a chain wheel, the transmission shaft and the transmission sleeve are matched through a transmission key and a key groove, and when the transmission sleeve is worn and damaged, the transmission shaft can still be continuously used only by replacing the transmission sleeve.

In order to facilitate the uniform feeding of hot air into the working chamber and to facilitate the adjustment of the size of the air outlet, i.e. the area of the air outlet, according to the requirements, the preferred technical scheme is that the gap between the two partition plates in the working chamber, which forms the air inlet, is gradually increased from top to bottom. Because the atmospheric pressure of inlet air channel can reduce gradually from top to bottom, in order to make the upper and lower temperature in the studio keep even unanimous for the airflow keeps being close from top to bottom, can adopt the clearance that forms the air intake between two baffles, the technical scheme that increases gradually from top to bottom realizes.

In order to uniformly and efficiently convey the heat generated by the heating unit to the working chamber and quickly heat the return air, the preferable technical scheme is that the heating unit is arranged in the middle of the heating chamber and corresponds to the position of the return air inlet.

In order to facilitate the heated hot air to form rapid and uniform flowing air flow between the heating chamber and the working chamber, the preferable technical scheme is that a fan and a fan driving motor are respectively arranged outside the annealing and aging furnace, the fan and the fan driving motor are connected through a belt pulley and a belt, and one end of a driving shaft of the fan penetrates through the top wall of the furnace body to be connected with an impeller of the fan.

In order to facilitate the heated hot air to form rapid and uniform flowing air flow between the heating chamber and the working chamber, the preferable technical scheme is that an air inlet guide plate connected between the fan impeller and the air inlet channel and an air return guide plate connected between the fan impeller and the air return opening are respectively arranged in the heating chamber.

In order to measure and control the heating time, the heating speed and the heating temperature of the heated material, the preferable technical proposal is that a temperature sensor is arranged in the heating chamber and/or the working chamber, the electric heating unit is connected with a solid-state relay or an electric power adjusting controller, and the temperature sensor, the solid-state relay or the electric power adjusting controller are respectively connected with a PID temperature controller.

The utility model has the advantages and the beneficial effects that: the radiant heating type annealing and aging furnace has the characteristics of safe heating, good heating uniformity, high heating efficiency, easy regulation and control of heating temperature, easy control of heating position, convenient feeding and discharging of the heated material from the heating furnace, high conveying efficiency, automatic control of the heated material and the like. The utility model discloses annealing, ageing furnace both can be used for the annealing of metalwork, also can be used for the ageing treatment of metalwork. The heating device can adopt subarea heating, an independent heating chamber and a working chamber are respectively arranged in each heating subarea, a heating source in the heating chamber adopts electric heating, hot air is formed between the heating chamber and the working chamber to circularly flow through a fan, and the workpiece is heated or insulated through the hot air. The furnace body adopts the cuboid overall structure so that the furnace body is compact in structure and convenient to process and manufacture, workpieces can be conveniently fed and taken out in the furnace body, heat-preservation isolation devices are reduced, and the temperature in the furnace body is kept consistent as far as possible. The working chamber adopts a heating airflow circulating structure with air inlet at two sides and air outlet at the upper part, so that hot air can uniformly flow over the surface of a heated workpiece, and the thermodynamic principle that the hot air rises and the cold air falls is adopted. The impeller of the fan blows air flow to the electric heating unit, the air flow enters the air outlet channel through the flow guide pipe after being heated by the electric heater, hot air flow is discharged from a plurality of hot air outlets in a partition plate on one side of the air outlet channel and enters the working chamber, hot air is in surface contact with a heated workpiece in the working chamber, the workpiece is heated through heat exchange, the hot air flow cooled through the heat exchange continues to flow upwards, the hot air flow returns to the heating chamber through an air return port arranged at the top of the working chamber, and then the air flow is circulated next time through the impeller of the fan. The adjusting plate is arranged on one side of the air inlet channel partition plate, so that the flow speed or the flow of air flowing into the working chamber can be adjusted conveniently, and the size of the area of the hot air outlet can be changed. The size of the dislocation amount of the relative position of the partition board which is fixedly installed and the hot air outlet on the movable adjusting plate is adopted, so that the purpose of changing the area of the exhaust hole is realized.

Drawings

FIG. 1 is a schematic structural view of the annealing aging furnace of the utility model;

FIG. 2 is a schematic top view of the annealing aging furnace of the present invention.

In the figure: 1. annealing and aging furnace; 2. a working chamber; 3. a heating chamber; 4. a heating unit; 5. an air inlet; 6. an air return opening; 7. a burner; 8. a coil pipe; 9. a heat exchanger; 10. a nozzle; 11. material frame; 12. a drive shaft; 13. a drive shaft; 14. a drive motor; 15. a sprocket; 16. a drive chain; 17. a bearing seat; 18. a transmission sleeve; 19. a support bearing; 20. a partition plate; 21. an air inlet channel; 22. a fan; 23. a fan driving motor; 24. a fan impeller; 25. and an air return guide plate.

Detailed Description

The following description will further describe embodiments of the present invention with reference to the accompanying drawings and examples. The following examples are only for illustrating the technical solutions of the present invention more clearly, and the protection scope of the present invention is not limited thereby.

As shown in fig. 1 and 2, the utility model relates to a radiant heating formula annealing, ageing furnace, annealing, ageing furnace 1 is the cuboid structure, annealing, ageing furnace 1 includes in the studio 2 and sets up heating chamber 3 on studio 2 upper portion, be equipped with heating unit 4 in the heating chamber 3, lateral wall and the top at studio 2 are equipped with air intake 5 and return air inlet 6 respectively, heating unit includes combustion can 7, combustion can 7's one end is connected with the inside coil pipe 8 of heat exchanger 9, shower nozzle or nozzle 10 are connected with the combustion can 7 other end, the other end setting of coil pipe 8 is at annealing, ageing furnace 1's outside, coil pipe 8's middle part sets up the inside at heat exchanger 9, heat exchanger 9 is in the pipeline that is linked together with air intake 5 and return air inlet 6, still be equipped with the impeller of fan in the heating chamber 3.

In order to simplify the mechanism structure of the heat exchanger 9, reduce the processing and manufacturing cost of the heat exchanger 9 and reduce the volume in the heating chamber 3, the preferred embodiment of the invention is that at least one heat exchanger arrangement 9 is arranged in the heating chamber 3, and preferably 2 heat exchangers 9 connected in parallel can be arranged.

In order to facilitate the transmission of the material frame 11 inside and outside the working chamber, facilitate the installation and maintenance of the transmission shaft 12, facilitate the transmission efficiency of the material frame 11 to be improved, the utility model discloses the preferred embodiment is, be equipped with the material frame transport mechanism in the said working chamber 2, the material frame transport mechanism includes the drive shaft 13 and several transmission shafts 12, the drive shaft 13 is the output shaft of the driving motor 14, connect through sprocket 15, driving chain 16 or band pulley, drive belt between drive shaft 13 and several transmission shafts 12; wherein, the one end setting of transmission shaft 12 is outside at studio 2, and the other end setting of transmission shaft 12 is inside studio 2, and transmission shaft 12 passes through bearing, bearing frame 17 and supports respectively in studio 2's inside and outside, and material frame 11 is placed on transmission shaft 12, and transmission shaft 12 sets up the bottom in studio 2.

In order to facilitate the conveying of material frame 11, the installation of the transmission shaft 12 of being convenient for is maintained, is convenient for improve the conveying efficiency of material frame 11, the utility model discloses preferred embodiment still has, and transmission shaft 12 is provided with two along length direction in the studio 6.

In order to facilitate prolonging the service life of the transmission shaft 12, the utility model discloses preferred embodiment is also be provided with the transmission sleeve 18 on the transmission shaft 12 of the inside of studio 2, the both ends of transmission sleeve 18 are equipped with support bearing 19, the bottom of material frame 11 is equipped with the driving chain 16 with the meshing of drive sprocket 15, through the cooperation of drive key and keyway between transmission shaft 12 and the transmission sleeve 18, when the transmission sleeve 18 takes place damage situations such as wearing and tearing, only need to change the transmission sleeve 18 and can still continue to use transmission shaft 12.

In order to facilitate evenly sending into the studio with hot-blast, but also be convenient for adjust the size of air outlet as required be the area of air outlet, the utility model discloses preferred embodiment still has the clearance that forms air intake 5 between two baffles 20 in the studio 2 from top to bottom increases gradually. Because the air pressure of the air inlet channel 21 is gradually reduced from top to bottom, in order to keep the upper and lower temperatures in the working chamber 2 uniform and consistent and keep the air flow rate close to each other from top to bottom, a technical scheme that the air inlet gap is formed between the two partition plates 20 and is gradually increased from top to bottom can be adopted.

In order to carry the heat that heating element 4 produced evenly high-efficiently in studio 2, can make the return air obtain quick heating moreover, the utility model discloses preferred embodiment still, heating element 4 sets up in the middle part of heating chamber 3, and corresponds with the position of return air inlet 6.

In order to facilitate the heated hot air to form a rapid and uniform flowing air flow between the heating chamber 3 and the working chamber 2, the preferred embodiment of the invention is also that the outside of the annealing aging furnace 1 is respectively provided with a fan 22 and a fan driving motor 23, the fan 22 is connected with the fan driving motor 23 through a belt pulley and a belt, and one end of a driving shaft of the fan 20 is connected with an impeller 22 of the fan by passing through the top wall of the furnace body.

In order to facilitate the heated hot air to form a fast and uniform flowing air flow between the heating chamber 3 and the working chamber 2, the preferred embodiment of the present invention further comprises an air inlet guide plate 23 and an air return guide plate 25, wherein the air inlet guide plate 23 is connected between the fan impeller 22 and the air inlet channel 19, and the air return guide plate 25 is connected between the fan impeller 24 and the air return opening 6, respectively, arranged in the heating chamber 2.

In order to facilitate the measurement and control of the heating time, the heating speed and the heating temperature of the heated material, the utility model discloses preferred technical scheme still be equipped with temperature sensor in heating chamber 3 and/or the studio 2, temperature sensor, solid state relay or electric power regulation controller are connected with the PID temperature controller respectively.

Natural gas is commonly used as a heating source in annealing and aging furnaces. There are two general heating methods, direct combustion and radiation.

The radiant heating can be a radiant tube burner or a conventional burner plus radiant tube structure. The radiation heating has the advantage that the hot air does not directly contact with products in the annealing and aging furnace in the circulating process, thereby ensuring that the surfaces of the products subjected to annealing and aging do not have the defects of corrosion, water spots and the like.

The utility model discloses a conventional nozzle burns in the burning section of thick bamboo, and the burning section of thick bamboo links to each other with heat exchanger, and heat exchanger is tubular exchanger, and there is the gas vent at the end of exchanger.

The device is reasonably arranged in a heating chamber of an annealing, aging and furnace, and heat generated by radiation is transferred into a working chamber through a circulating fan, so that heating and heat preservation processes of products in the furnace are completed, and annealing and aging processes are achieved.

The heat exchanger may be made of 304 stainless steel tubes and plates. Is suitable for repeated use in high-temperature occasions.

The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of improvements and decorations can be made without departing from the technical principle of the present invention, and these improvements and decorations should also be regarded as the protection scope of the present invention.

Claims

1. The utility model provides a radiant heating formula is annealed, ageing furnace, annealing, ageing furnace is the cuboid structure, annealing, ageing furnace includes the studio and sets up the heating chamber on studio upper portion, be equipped with heating unit in the heating chamber, lateral wall and top at the studio are equipped with air intake and return air inlet respectively, a serial communication port, heating unit includes gas nozzle and a burner, the one end and the heat exchanger of a burner are connected, heat exchanger comprises a plurality of coil pipes, the one end and the burner of installation gas nozzle of coil pipe are connected, the other end setting of coil pipe is annealing, ageing furnace's outside, the middle part of coil pipe sets up the inside at heat exchanger, heat exchanger is in the pipeline that is linked together with air intake and return air inlet, still be equipped with the impeller of fan in the heating chamber.

2. A radiant heating annealing aging furnace as claimed in claim 1, characterized in that at least one heat exchanger arrangement is provided in the heating chamber.

3. The radiant heating type annealing aging furnace according to claim 1, wherein a material frame conveying mechanism is arranged in the working chamber, the material frame conveying mechanism comprises a driving shaft and a plurality of transmission shafts, the driving shaft is an output shaft of a driving motor, and the driving shaft is connected with the plurality of transmission shafts through a chain wheel, a transmission chain or a belt wheel and a transmission belt; wherein, the one end setting of transmission shaft is outside at the studio, and the other end setting of transmission shaft is inside the studio, and the transmission shaft passes through bearing, bearing frame and supports respectively in the inside and the outside of studio, and the material frame is placed on the transmission shaft, and the transmission shaft setting is in the bottom of studio.

4. A radiant heating annealing aging furnace as claimed in claim 3 wherein the drive shafts are arranged in two lengthwise rows within the chamber.

5. The radiant heating annealing aging furnace of claim 4, wherein a driving sleeve is provided on the driving shaft inside the working chamber, supporting bearings are provided on both ends of the driving sleeve, a driving chain engaged with the driving sprocket is provided on the bottom of the material frame, and the driving shaft and the driving sleeve are engaged by a driving key and a key groove.

6. A radiant heating annealing aging furnace as claimed in claim 1, wherein the gap between the two partitions forming the air inlet in the working chamber is gradually increased from the top to the bottom.

7. The radiant heating type annealing/aging furnace as claimed in claim 6, wherein the heating unit is provided in the middle of the heating chamber in correspondence with the position of the return air inlet.

8. The radiant heating type annealing aging furnace according to claim 7, wherein a fan and a fan driving motor are respectively arranged outside the annealing aging furnace, the fan and the fan driving motor are connected through a belt pulley and a belt, and one end of a driving shaft of the fan penetrates through the top wall of the furnace body to be connected with an impeller of the fan.

9. The radiant heating annealing aging furnace of claim 6, wherein an intake air guide plate connecting the fan impeller and the intake air passage and a return air guide plate connecting the fan impeller and the return air inlet are provided in the heating chamber, respectively.

10. The radiant heating annealing aging furnace of claim 1, wherein a temperature sensor is provided in the heating chamber and/or the working chamber, and the temperature sensor, the solid state relay or the power regulation controller is connected with a PID temperature controller.