HEATING APPARATUS FOR VERTICALLY AND HELICALLY CONVEYING WORKPIECE

Abstract

The invention makes public heating apparatus for vertically and helically conveying workpiece, including the main bracket, on which interconnected heating furnace and cooling furnace are arranged in parallel; The bracket is placed inside the heating furnace, the 1st spiral supporting plate is spiraling on the bracket, and conveyer belt is arranged on the 1st spiral supporting plate along spiral direction; one or multiple gas inlet/inlets are set on the heating furnace body to fill protective gas into furnace;

Description

TECHNICAL FIELD

The invention belongs to the technical field of mechanical manufacture, of which heating apparatus for vertically and helically conveying workpiece is particularly involved.

BACKGROUND TECHNOLOGY

In the mechanical processing field, heat treatment process of cooling after heating for workpiece drying, brazing stress relief annealing, artificial aging etc. shall be carried out. In present technology, horizontal type heating cooling device is usually used to heat and cool the workpiece. With transversal arrangement and large area occupation of the conveyer belt, the energy is lost during continuous heating and cooling. In addition, the productivity of the enterprise is affected in case of limited space.

Invention Content

The technical problem to be solved by the invention is the present technology deficiency as above mentioned, and to provide one type of highly effective and energy-saving protective atmosphere spiral conveying heating furnace and spiral conveying cooling device with small equipment floor area.

In order to solve the above technical problem, the technical proposal adopted for this invention is heating apparatus for vertically and helically conveying workpiece, including the main bracket, on which interconnected heating furnace and cooling furnace are arranged in parallel;

The bracket is placed inside the mentioned heating furnace, the 1^st spiral supporting plate is spiraling on the bracket, and conveyer belt is arranged on the 1^st spiral supporting plate along spiral direction; one or multiple gas inlet/inlets are set on the heating furnace body to fill protective gas into furnace;

The 2^nd spiral supporting plate is spiraling vertically inside the mentioned cooling furnace; the direction of the mentioned conveyer belt inside the cooling furnace is uniform to that of the 2^nd spiral supporting plate; drive mechanism for conveyer belt is installed on the mentioned main bracket. One or multiple gas inlet/inlets are set on the cooling furnace body to fill protective gas into furnace;

The conveyer belt runs through the mentioned heating furnace and cooling furnace and forms one loop via drive mechanism.

The features and further improvement for the above technical proposal:

Further, the 2^nd spiral supporting plate is welded on the inner wall of cooling furnace;

In addition, the 1^st rotation unit is vertically placed inside heating furnace, which comprises the 1^st upper rotating shaft and the 1^st lower rotating shaft, between which several vertical 1^st supporting bars are connected. The mentioned 1^st supporting bar is closely against the inner side of the 1^st conveyer belt. The 1^st upper rotating shaft goes through top plate of heating furnace and installed outside the top plate via bearing. And the 1^st lower rotating shaft goes through bottom plate of heating furnace and installed on the main bracket via bearing.

Furthermore, the 2^nd rotation unit is vertically placed inside the mentioned cooling furnace, which comprises the 2^nd upper rotating shaft and the 2^nd lower rotating shaft, between which several vertical 2^nd supporting bars are connected. The mentioned 2^nd supporting bar is closely against the inner side of the 2^nd conveyer belt. The 2^nd upper rotating shaft goes through top plate of cooling furnace and installed outside the top plate via bearing. And the 2^nd lower rotating shaft goes through bottom plate of cooling furnace and installed on the main bracket via bearing.

The mentioned main bracket is equipped with the 1^st motor for driving the 1^st and the 2^nd rotation units.

Furthermore, the mentioned drive mechanism comprises many guiding rollers for guiding the conveyer belt and the 2^nd motor for driving the guiding rollers and putting the conveyer belt in motion.

The protective gas is one of the following gases: Hydrogen, Nitrogen, Ammonia decomposition gas (3H₂+N₂), DX gas, methyl alcohol & Nitrogen, Nitrogen & Hydrogen.

The invention is one type of protective atmosphere spiral conveying heating furnace and spiral conveying cooling device with the following advantages: 1. High effective energy-saving with small floor area, unlimited to production site; 2. Productivity can be highly improved with same floor area and energy consumption; 3. Continuous production.

ATTACHED DRAWING DESCRIPTION

FIG. 1 Structural diagram of one type of protective atmosphere spiral conveying heating furnace and spiral conveying cooling device

In which: 1. Main bracket 2. Heating furnace 3. Cooling furnace 4. Bracket 5. 1^st spiral supporting plate 6. Conveyer belt 7. 2^nd spiral supporting plate 8. 1^st upper rotating shaft 9. 1^st lower rotating shaft 10. 1^st supporting bar 11. 2^nd upper rotating shaft 12. 2^nd lower rotating shaft 13. 2^nd supporting bar 14. 1^st motor; 15. Guiding roller 16. 2^nd motor 17. Gas inlet of heating furnace 18. Gas inlet of cooling furnace

DETAILED MODE OF EXECUTION

The invention is heating apparatus for vertically and helically conveying workpiece, as FIG. 1 shown, comprising main bracket (1), on which interconnecting heating furnace (2) and cooling furnace (3) are placed in parallel. The bracket (4) is placed inside the heating furnace (2), the 1^st spiral supporting plate (5) is spiraling on the bracket (4), and conveyer belt (6) is arranged on the 1^st spiral supporting plate (5) along spiral direction; one or multiple gas inlet/inlets (17) are set on the heating furnace (2) body to fill protective gas into furnace; The 2^nd spiral supporting plate (7) is spiraling vertically inside the mentioned cooling furnace (3); the direction of the mentioned conveyer belt (6) inside the cooling furnace (3) is uniform to that of the 2^nd spiral supporting plate (7); drive mechanism for conveyer belt is installed on the mentioned main bracket (1). One or multiple gas inlet/inlets (18) are set on the cooling furnace (3) body to fill protective gas into furnace; the conveyer belt (6) runs through the mentioned heating furnace (2) and cooling furnace (3) and forms one loop via drive mechanism. The protective gas is used for protecting the workpiece inside heating furnace (2) and cooling furnace (3). The protective gas is one of the gases: Hydrogen, Nitrogen, Ammonia decomposition gas (3H₂+N₂), DX gas, methyl alcohol & Nitrogen, Nitrogen & Hydrogen. During practical production, the gas selection is subject to process requirement. The invention is heating apparatus for vertically and helically conveying workpiece, which is used for normal heating, brazing heating or other heat treatment under protective atmosphere.

The invention is heating apparatus for vertically and helically conveying workpiece, the 2^nd spiral supporting plate (7) is welded on the inner wall of cooling furnace. The 1^st rotation unit is vertically placed inside heating furnace (2), which comprises the 1^st upper rotating shaft (8) and the 1^st lower rotating shaft (9), between which several vertical 1^st supporting bars (10) are connected. The mentioned 1^st supporting bar (10) is closely against the inner side of the 1^st conveyer belt. The 1^st upper rotating shaft goes through top plate of heating furnace (2) and installed outside the top plate via bearing. And the 1^st lower rotating shaft goes through bottom plate of heating furnace (2) and installed on the main bracket (1) via bearing. The 2^nd rotation unit is vertically placed inside the mentioned cooling furnace, which comprises the 2^nd upper rotating shaft (11) and the 2^nd lower rotating shaft (12), between which several vertical 2^nd supporting bars (13) are connected. The mentioned 2^nd supporting bar (13) is closely against the inner side of the 2^nd conveyer belt. The 2^nd upper rotating shaft (11) goes through top plate of cooling furnace (3) and installed outside the top plate via bearing. And the 2^nd lower rotating shaft (12) goes through bottom plate of cooling furnace (3) and installed on the main bracket (1) via bearing. The main bracket (1) is equipped with the 1^st motor (14) for driving the 1^st and the 2^nd rotation units. The drive mechanism comprises many guiding rollers for guiding the conveyer belt and the 2^nd motor (16) for driving the guiding rollers and putting the conveyer belt in motion.

The invention is heating apparatus for vertically and helically conveying workpiece, the 1^st spiral supporting plate (5) is placed inside heating furnace (2) for supporting and conveying conveyer belt (6). Longer conveying belt can be set in the same space inside heating furnace to ensure conveying more workpiece and improve productivity. Heating device is set on inner wall of heating furnace. The heating furnace volume with conveyer belt in same length is smaller, and since heating space is reduced, energy is thereby saved and heat efficiency improved. The 2^nd spiral supporting plate (7) is set in cooling furnace (3) to save energy. During rotation of the 1^st supporting bar (10) and the 2^nd supporting bar (13), to provide friction power for conveyer belt (6) and reduce wearing to conveying belt to prolong service life.

Claims

1. This device is one kind of vertical and helical conveyor, with the character of conveying work piece helically in vertical direction, above device installed inside the chamber of heating furnace (1), this conveying device is used for transmitting the conveying belt (3) in helical way, above mentioned device includes supporting device (2) for this helical structure. Including the first rotor (9) as well, which is placed in the room formed by first supporting structure (2) and rotating round the vertical axis line. This rotor is cylindrical frame structure, the outer surface of rotor clings to the inner side of conveying belt (3), this rotor provides auxiliary power for the conveying belt which is rotating in the same direction.

2. According to the rights claim 1, the character of above mentioned helical and vertical conveying device is, the first supporting structure (2) are supporting plate, supporting roller or supporting belt.

3. The character of above mentioned helical and vertical conveying device is, including mentioned conveying device in either rights claim 1, including heating furnace (1) as well, mentioned conveying device placed inside the chamber of heating furnace (1), conveying device drive belt (3), in the upper and bottom of furnace has the first opening (5) and the second opening (6), opening (5) and opening (6) used for input and output of conveying belt (3).

4. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, outside the mentioned heating furnace (1) has work piece transmit system, the above mentioned work piece transmit system includes conveying belt (3) and transmission mechanism (4) used for driving the conveying belt, the conveying belt (3), enters into the heating furnace (1) according to the first opening (5), goes out from the second opening (6) of heating furnace.

5. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, conveying belt (3) goes out of heating furnace (1) via the second opening (6), back to the first opening (5), form the first circulating loop for work piece transmission.

6. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, including cooling furnace (10) as well, cooling furnace (10) placed with heating furnace (1) in parallel, connected by conveying belt (3).

7. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, cooling furnace (10) has the second supporting structure (11) with helical type in vertical direction, the second supporting structure (11) has conveying belt (3) in the same direction with helix, in the upper and bottom of cooling furnace has the third opening (12) and the fourth opening (13). The mentioned conveying belt (3) enters into the heating furnace (1) via the first opening (5), goes out from the second opening (6), enters into cooling furnace (10) via the third opening (12), goes out of cooling furnace (10) via the fourth opening (13) and then goes back to the first opening (5), form the second circulating loop for work piece transmission.

8. According to the rights claim 7, the character of above mentioned helical and vertical heating equipment is, the mentioned second supporting structure (11) are supporting plate, supporting roller or supporting belt, inside the cooling furnace, the second rotor (15) placed in the room which is formed by the second supporting structure (11), This rotor used for providing auxiliary power for the conveying belt (3), The second rotor (15) is cylindrical frame structure, the outer surface of second rotor (15) adhere to the inner side of conveying belt (3), this second rotor provides auxiliary power for the conveying belt.

9. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the mentioned first supporting structure (2) are multiple, these supporting structures (2) set in parallel with interval.

10. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the quantity of first supporting structure (2) are 2 sets.

11. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the first supporting structure (2) and the second supporting structure (11) are multiple, these multiple first support structure (2) and second supporting structure (11) are set in parallel with interval respectively.

12. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the quantity of first supporting structure (2) and the second supporting structure (11) are 2 sets both.

13. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, heating furnace (1) body has one or several inlets (7) used for inlet of air or atmosphere or other protective gases, the protective gas should be one of the nitrogen, hydrogen, compound of H2 and N2, helium, Argon gas, methanol dissociated gas, endothermic protective gas(AX gas), exothermic atmosphere(DX gas), ammonia dissociated gas.

14. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, heating furnace (1) body has one or several inlets (7) used for inlet of protective gas, cooling furnace (10) has one or several inlets (14) used for inlet of protective gas or atmosphere, the protective gas should be one of the nitrogen, hydrogen, compound of H2 and N2, helium, Argon gas, methanol dissociated gas, endothermic gas(AX gas), exothermic protective gas(DX gas), ammonia dissociated gas.

15. According to the rights claim 8, the character of above mentioned helical and vertical heating equipment is, the above mentioned first rotor and second rotor have 2 supporting rings (16) each in the upper and bottom, the supporting rings (16) supported and fixed by several vertical brackets.

16. According to the rights claim 15, the character of above mentioned helical and vertical heating equipment is, center of each supporting ring (16) fixed with flange plate (17), 2 flange plates (17) connected with bottom and upper of heating furnace (1) via the first rotating axle, or 2 flange plates (17) connected with bottom and upper of cooling furnace (10) via the second rotating axle, 2 axles connected with rotor transmission mechanism (18). This rotor transmission mechanism used for driving the rotate of the first rotor (9)/the second rotor (15)

17. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the heating furnace (1) include furnace outer shell, thermal insulation layer, heating element which is set inside the furnace inner wall.

18. According to the rights claim 3, the character of above mentioned helical and vertical heating equipment is, the cooling furnace (10) includes outer shell, a refrigerant chamber is formed between shell and inner wall for coolant flowing.

19. The character of above mentioned helical and vertical conveying device is, including mentioned conveying device in either rights claim 2, including heating furnace (1) as well, mentioned conveying device placed inside the chamber of heating furnace (1), conveying device drive belt (3), in the upper and bottom of furnace has the first opening (5) and the second opening (6), opening (5) and opening (6) used for input and output of conveying belt (3).