CN217230843U

CN217230843U - Circulating air duct structure in annealing and aging furnace

Info

Publication number: CN217230843U
Application number: CN202123053002.1U
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: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-08-19
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses an annealing, circulation wind channel structure in ageing furnace, annealing, ageing furnace include the studio and set up the heating chamber on studio upper portion, be equipped with the heating unit in the heating chamber, lateral wall and top at the studio are equipped with air intake and return air inlet respectively, annealing, be equipped with the inlet air duct with the heating chamber intercommunication between ageing furnace inner wall and the studio, the air intake sets up the one side that is close to the studio at inlet air duct, the air intake comprises the air inlet duct between a plurality of baffles of setting on the support, be equipped with the slot hole that is used for adjusting clearance between the baffle at every baffle both ends and the position of being connected of support, the baffle passes slot hole and leg joint through the fastener, the return air inlet sets up the bottom at the heating chamber. The circulating air duct structure has the advantages of safe heating, good heating uniformity, high heating efficiency, easy regulation and control of heating temperature for the heated materials, and convenient feeding and discharging of the heated materials into and out of the heating furnace.

Description

Circulating air duct structure in annealing and aging furnace

Technical Field

The utility model relates to the technical field of metal heat treatment equipment, in particular to a circulating air duct structure in an annealing furnace and an 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 extrusion 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 alloy products of various brands according to various annealing and aging processes is the problem to be solved by the existing batch annealing and aging treatment. Most of the existing annealing or aging treatment furnaces adopt carrying tools such as carts to push the metal materials to be treated to the annealing or aging treatment furnaces or take the metal materials out of the annealing or aging treatment furnaces, so that time and labor are wasted, and in addition, a carrying vehicle for carrying the materials works under the condition of repeated high temperature for many times and is easy to damage.

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 the heating process safety, the heating homogeneity is good, heating efficiency is high, heating temperature easily regulates and control by the heat treatment material, by the heating material advance, go out the convenient circulation wind channel structure in annealing, the ageing furnace of heating furnace.

For realizing the above-mentioned purpose, the technical scheme of the utility model provides an annealing, circulation wind channel structure in ageing oven, annealing, ageing oven includes the studio and sets up the heating chamber on studio upper portion, be equipped with the heating unit in the heating chamber, lateral wall and top at the studio are equipped with air intake and return air inlet respectively, annealing, be equipped with the inlet air duct with the heating chamber intercommunication between ageing oven inner wall and the studio, the air intake sets up the one side that is close to the studio at inlet air duct, the air intake comprises the intake stack between a plurality of baffles of setting on the support, be equipped with the slot hole that is used for adjusting clearance between the baffle at every baffle both ends and the junction of support, the baffle passes slot hole and leg joint through the fastener, the return air inlet sets up the bottom at the heating chamber.

In order to facilitate the heated product to be conveyed into a working chamber for heating, the preferable technical scheme is that a material frame conveying mechanism is arranged in the working chamber and 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.

In order to facilitate the conveying of the material frame, the transmission shaft and the transmission shaft are installed and maintained, the conveying efficiency of the material frame is improved, and the transmission shaft is arranged at the bottom of the working chamber in the preferred technical scheme.

In order to facilitate the conveying of material frame to maintain with the installation of transmission shaft, be convenient for improve the conveying efficiency of material frame, preferred technical scheme still, the inside of studio is cuboid body cavity structure, and the transmission shaft is provided with two along length direction in the studio.

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 driven by the transmission chain, a transmission chain meshed with a transmission chain wheel is arranged at the bottom of the material frame, the transmission shaft and the transmission sleeve are matched by 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 uniformly and efficiently convey the heat generated by the heating unit to the working chamber and quickly heat the return air, the preferred technical scheme is that the electric heating unit is arranged in the middle of the heating chamber and corresponds to the position of the return air inlet.

In order to improve the heating efficiency of the heating unit to the circulating air flow, reduce the cost of the heating device and prolong the service life of the heating device, the preferred technical scheme is that the electric heating unit is an electric heating pipe.

In order to facilitate the heated hot air to form a 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 fast and uniform flowing air flow between the heating chamber and the working chamber, the preferable technical scheme is that an air outlet guide plate connected between the fan impeller and the air outlet channel and a return air guide plate connected between the fan impeller and the return air inlet 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 circulating air duct structure of the annealing and/or aging furnace has the characteristics of safe heating process, good heating uniformity, high heating efficiency, easy regulation and control of heating temperature, convenience in feeding and discharging of the heated material from the heating furnace and the like for the heated material. 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 adopts zone heating, an independent heating chamber and a working chamber are respectively arranged in each heating zone, a heating source in each heating chamber adopts electric heating, hot air circularly flows between the heating chamber and the working chamber through a fan, and workpieces are 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 through the surface of a heated workpiece according to the thermodynamic principle that the hot air rises and the cold air falls. 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 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;

FIG. 3 is a schematic structural view of the circulating air duct 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. an electrical heating unit; 5. an air inlet; 6. an air return opening; 7. an air inlet channel; 8. a support; 9. a partition plate; 10. a drive shaft; 11. a drive shaft; 12. a drive motor; 13. a sprocket; 14. a drive chain; 15. a bearing seat; 16. material frame; 17. a driving sleeve; 18. a support bearing; 19. a fan; 20. a fan driving motor; 21. an impeller of the fan; 22. an air outlet channel; 23. an air outlet guide plate; 24. 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 an annealing, circulation wind channel structure in ageing furnace 1, annealing, ageing furnace 1 includes in the studio 2 and sets up the 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, annealing, be equipped with the inlet air duct 7 with heating chamber 3 intercommunication between ageing furnace 1 inside wall and the studio 2, air intake 5 sets up the one side that is close to studio 2 at inlet air duct 7, air intake 5 comprises the intake stack between a plurality of baffles 9 that set up on support 8, be equipped with the slot hole that is used for adjusting clearance between baffle 9 at every baffle 9 both ends and support 8's the position of being connected, baffle 9 passes the slot hole through the fastener and is connected with support 8, return air inlet 6 sets up the bottom at heating chamber 3.

In order to facilitate the heated product to be conveyed into the working chamber 2 for heating, the preferred embodiment of the utility model is that a material frame conveying mechanism is arranged in the working chamber 2, the material frame conveying mechanism comprises a driving shaft 10 and a plurality of transmission shafts 11, the driving shaft 10 is an output shaft of a driving motor 12, and the driving shaft 10 is connected with the plurality of transmission shafts 11 through a chain wheel 13, a transmission chain 14 or a belt wheel and a transmission belt; wherein, the one end setting of transmission shaft 11 is outside at studio 2, and the other end setting of transmission shaft 11 is inside studio 2, and transmission shaft 11 passes through the bearing, bearing frame 15 supports respectively in studio 2's inside and outside, and material frame 16 places on transmission shaft 11.

In order to facilitate the transmission of the material frame 16 and maintain the installation of the transmission shaft 11, the transmission efficiency of the material frame 16 is improved, and the preferred embodiment of the utility model is that the transmission shaft 11 is arranged at the bottom of the working chamber 2 in the working chamber 2.

In order to facilitate the conveying of material frame 16 to maintain with the installation of transmission shaft 11, be convenient for improve the conveying efficiency of material frame 16, the utility model discloses preferred embodiment still has, the inside of studio 2 is cuboid body cavity structure, and transmission shaft 11 is provided with two along length direction in studio 2.

In order to facilitate prolonging the service life of the transmission shaft 11, the utility model discloses preferred embodiment is also be provided with the transmission sleeve 17 on the transmission shaft 11 of the inside of studio 2, the both ends of transmission sleeve 17 are equipped with support bearing 18, through the transmission of drive chain 14 between transmission shaft 11 and the transmission shaft 11, the bottom of material frame 16 is equipped with the drive chain 14 with drive sprocket 13 meshing, through drive key and keyway cooperation between transmission shaft 11 and the transmission sleeve 17, when the transmission sleeve 17 takes place damage situations such as wearing and tearing, only need to change the transmission sleeve 17 and can still continue to use by transmission shaft 11.

In order to evenly and efficiently convey the heat generated by the heating unit 4 to the working chamber 2 and quickly heat the return air, the preferred embodiment of the present invention also provides that the electric heating unit 4 is disposed in the middle of the heating chamber 3 and corresponds to the position of the return air inlet 6.

In order to improve heating unit 4 to circulating air's heating efficiency, reduce heating device's cost, improve heating device's life, the utility model discloses preferred embodiment still has, electric heating unit 4 is electric heating pipe.

In order to facilitate the formation of fast and uniform flowing air flow of heated hot air between the heating chamber 3 and the working chamber 2, the preferred embodiment of the present invention is further that the outside of the annealing and aging furnace 1 is respectively provided with a fan 19 and a fan driving motor 20, the fan 19 is connected with the fan driving motor 20 through a belt pulley and a belt, and the top wall of the annealing and aging furnace 1 is connected with an impeller 21 of the fan by one end of a driving shaft of the fan 19.

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 outlet guide plate 23 connected between the fan impeller 21 and the air outlet channel 22 and an air return guide plate 24 connected between the fan impeller 21 and the air return opening 6 respectively arranged in the heating chamber 3.

In order to facilitate the measurement and control of the heating time, the heating speed and the heating temperature of the heated material, the preferred embodiment of the utility model also comprises that a temperature sensor is arranged in the heating chamber 3 and/or the working chamber 2, the electric heating unit 4 is connected with the solid-state relay or the electric power adjusting controller, and the temperature sensor, the solid-state relay or the electric power adjusting controller are respectively connected with the PID temperature controller.

The traditional annealing (aging) furnace circulating air generally adopts a longitudinal one-way or positive and negative two-way circulating structure. The two ends of the furnace are provided with air guide sleeves, which is convenient for the distribution and arrangement of the upper and lower circulating air.

What this application adopted is that the bilateral air-out, middle top return air structural design.

In order to ensure the uniformity of temperature in the heating and heat preservation processes, the air outlet on the two sides adopts a structure designed by a bilateral symmetry air duct.

The middle top part returns air uniformly in the length direction and then enters a circulating fan, the circulating fan generally adopts a centrifugal fan, high-temperature hot air is formed after an air outlet of the fan is mixed with a heating element (a natural gas burner or an electric heating tube), the high-temperature hot air is uniformly divided into two halves after the air channel is designed and arranged in a bilateral symmetry mode, and the two halves are respectively used for uniformly exhausting air from side air outlets;

the heating element and the heating mode can be electric heating (adopting an electric heating pipe or a resistance wire) and a natural gas burner (adopting a direct-fired type or a radiant tube).

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 circulation wind channel structure in annealing, ageing furnace, annealing, ageing furnace include the studio and set up the heating chamber on studio upper portion, be equipped with heating unit in the heating chamber, be equipped with air intake and return air inlet respectively at the lateral wall and the top of studio, its characterized in that, be equipped with the inlet air duct with the heating chamber intercommunication between annealing, ageing furnace inside wall and the studio, the air intake sets up in the one side that inlet air duct is close to the studio, the air intake comprises the intake stack between a plurality of baffles of setting on the support, be equipped with the slot hole that is used for adjusting the clearance between the baffle at every baffle both ends and the position of being connected of support, the baffle passes the slot hole through the fastener and is connected with the support, the return air inlet sets up the bottom at the heating chamber.

2. The structure of the circulating air duct in the annealing and 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.

3. The circulating air duct structure in an annealing aging furnace according to claim 2, wherein the drive shaft is provided at the bottom of the working chamber in the working chamber.

4. The structure of the circulating air duct in the annealing and aging furnace according to claim 3, wherein the inside of the working chamber is in a cuboid body cavity structure, and two rows of transmission shafts are arranged in the working chamber along the length direction.

5. The structure of the circulating air duct in the annealing and aging furnace according to claim 4, wherein a transmission sleeve is arranged on a transmission shaft inside the working chamber, supporting bearings are arranged at two ends of the transmission sleeve, a transmission chain meshed with a transmission chain wheel is arranged at the bottom of the material frame, and the transmission shaft is matched with the transmission sleeve through a transmission key and a key slot.

6. The structure of the circulating air duct in the annealing aging furnace according to claim 5, wherein the heating unit is provided in the middle of the heating chamber at a position corresponding to the position of the return air inlet.

7. The circulating duct structure in an annealing aging furnace according to claim 6, wherein the heating unit is an electric heating tube.

8. The structure of the circulating air duct in the 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 structure of the circulating air duct in the annealing aging furnace according to claim 5, wherein an air outlet guide plate connected between the fan impeller and the air outlet channel and a return air guide plate connected between the fan impeller and the return air inlet are respectively arranged in the heating chamber.

10. The structure of the circulating air duct in the annealing aging furnace according to claim 1, wherein 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 regulation controller, and the temperature sensor, the solid-state relay or the electric power regulation controller are respectively connected with a PID temperature controller.