CN211872052U

CN211872052U - Gas-saving tunnel furnace with workpiece and conveying device having different access

Info

Publication number: CN211872052U
Application number: CN202020453313.3U
Authority: CN
Inventors: 杨学礼; 杨晓东
Original assignee: Jiaxing Heyi Industrial Resistance Furnace Co ltd
Current assignee: Jiaxing Heyi Industrial Resistance Furnace Co ltd
Priority date: 2020-03-31
Filing date: 2020-03-31
Publication date: 2020-11-06
Anticipated expiration: 2030-03-31

Abstract

The utility model relates to a solar terms tunnel furnace of non-same access & exit of work piece and conveyor, it includes the end to end furnace body that is formed with inlet channel and exit channel, passes the inside conveyor of furnace body, the furnace body is including entrance, high temperature muffle furnace courage, cooling zone and the export section that connects gradually, inlet channel is formed in the entrance and is used for putting into work piece to conveyor, exit channel is formed in the export section and is used for outwards taking out the work piece of conveyor department, conveyor is the level and is used for the part of carrying the work piece to arrange in the furnace body, there is the contained angle between inlet channel and exit channel and the horizontal direction of transfer of conveyor. The utility model discloses have the effect that can play the solar term.

Description

Gas-saving tunnel furnace with workpiece and conveying device having different access

Technical Field

The utility model belongs to the technical field of the industrial furnace technique and specifically relates to a solar terms tunnel furnace of work piece and non-same access & exit of conveyor.

Background

One of the major development directions of the heat treatment production technology is controlled atmosphere heat treatment, and non-oxidation heat treatment is realized by using controlled atmosphere. In the production of less variety and large scale, especially the bright quenching, annealing, carburizing and quenching, carbonitriding quenching and gas carbonitriding of carbon steel and general alloy structural steel parts still use controllable atmosphere as main means.

When carrying out controllable atmosphere heat treatment, often can use the tunnel furnace, convey the work piece by the conveyor in the tunnel furnace, and heat and cool off the work piece, in the heating process of work piece, need utilize controllable atmosphere to protect and avoid the work piece surface to be by oxidation, common protective gas is hydrogen, utilize hydrogen to fill in the tunnel, thereby empty the oxygen in the stove, ordinary tunnel furnace is in order to make hydrogen can stably fill in the stove, the orbit of work piece is the bridge structure in the tunnel furnace, then the entrance point and the exit end of tunnel furnace are less than high temperature muffle furnace bottom, make the hydrogen that the proportion is lighter can float in being in high-order tunnel furnace, thereby discharge the oxygen that the proportion is great from the entrance and the export of tunnel furnace.

Chinese patent bulletin is CN 204803374U's patent and discloses a stainless steel bright annealing stove, stainless steel bright annealing stove includes conveying support, drive arrangement, preceding transfer wheel, back transfer wheel, thermometer, steel band, annealing stove import, annealing stove export, one-level cooling jacket, second grade cooling jacket, the annealing stove passes through steel band conveying feeding and the ejection of compact, has replaced artifical pay-off, has increaseed work efficiency, and the annealing stove export is equipped with the thermometer, can monitor outlet temperature, and the annealing stove export is equipped with cooling system simultaneously, can accelerate the cooling rate of sintering material, and the inside circular roller frame that is equipped with of annealing stove can rotary heating for sintering temperature is more even, provides sintering quality, and the annealing stove top is equipped with clean bell, can conveniently carry out regular clearance to the heating pipe in the stove.

According to the technical scheme, in the operation process, the workpiece is conveyed into the annealing furnace by the steel belt for annealing, and because the workpiece has a certain size, in order to enable the workpiece to be conveyed into the annealing furnace smoothly, the sizes of the inlet and the outlet of the annealing furnace are large, so that the protective gas in the furnace body overflows, and the protection performance of the workpiece is reduced.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a work piece and the solar terms tunnel furnace of the non-same access & exit of conveyor, can promote the solar terms effect to prior art exists not enough.

The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme: the utility model provides a solar terms tunnel furnace of non-same access & exit of work piece and conveyor, includes the furnace body that the head and the tail is formed with inlet channel and exit channel, passes the inside conveyor of furnace body, the furnace body is including the entrance, high temperature muffle furnace, cooling segment and the export section that connect gradually, inlet channel is formed in the entrance and is used for putting into work piece to conveyor, exit channel is formed in the export section and is used for outwards taking out the work piece of conveyor department, conveyor is the level and is used for the part of carrying the work piece to arrange in the furnace body, there is the contained angle between inlet channel and exit channel and the horizontal direction of transfer of conveyor.

Through adopting above-mentioned technical scheme, the work piece is put into to conveyor from inlet channel, the work piece is outwards taken out from outlet channel, conveyor is used for carrying the part of work piece to arrange in the furnace body, then the work piece enters into the import of furnace body and leaves the export of furnace body not conveyor's entry and export, then can reduce the opening size that is used for setting up conveyor and needs to set up on the furnace body, and have the contained angle between inlet channel and outlet channel's direction and conveyor's the horizontal direction of transfer, make protective gas can amass in the inside of furnace body, reduce excessive protective gas, play better gas saving effect.

The present invention may be further configured in a preferred embodiment as: the conveying device comprises a conveying belt and a driving mechanism for driving the conveying belt to circularly transmit, the conveying belt comprises a process section, a return section and a driving wheel, the process section sequentially penetrates through an inlet section, a high-temperature muffle furnace, a cooling section and an outlet section, the return section is arranged on the outer wall of the furnace body, the driving wheel is arranged outside the furnace body and abuts against the joint of the process section and the return section, and the driving mechanism is arranged outside the furnace body.

Through adopting above-mentioned technical scheme, the work piece is directly put into to the conveyer belt surface from entry passageway, takes out from exit channel, and at this moment, the conveyer belt then only is responsible for carrying out horizontal transfer with the work piece, then can reduce the opening that entry section export section is used for passing the conveyer belt, reduces protective gas's excessive, plays further solar terms effect, sets up the back journey section of conveyer belt outside the furnace body, also can minimize the opening that entry section and export section are used for wearing to establish the conveyer belt.

The present invention may be further configured in a preferred embodiment as: the process section is horizontal, a conveying opening used for penetrating the process section is formed in one side wall, away from the inlet section and the outlet section, of the side wall, and dynamic sealing is formed between the conveying opening and the process section.

By adopting the technical scheme, the overflow of protective gas in the furnace body is further reduced, a better gas saving effect is achieved, and the conveying opening is kept relatively sealed in the conveying process of the conveying belt.

The present invention may be further configured in a preferred embodiment as: the conveying device comprises a push plate which is connected with the inlet section far away from one side wall of the high-temperature muffle furnace in a sliding mode in a horizontal direction in a sealing mode, and a power cylinder which is arranged outside the furnace body and connected to the push plate.

Through adopting above-mentioned technical scheme, arrange the work piece in proper order in the inner wall of furnace body, intermittent type formula promotion push pedal removes under the drive of power cylinder, then can promote the work piece forward, makes the work piece progressively pass through high temperature muffle furnace and cooling zone, and the push pedal keeps being vertical with the entry section lateral wall in the slip in-process, then can reduce the inside protective gas's of furnace body overflow volume, reaches better solar terms effect.

The present invention may be further configured in a preferred embodiment as: the inlet channel and the outlet channel are both vertical, and a heating channel which is horizontal and vertical to the inlet channel is formed in the high-temperature muffle furnace.

Through adopting above-mentioned technical scheme, make entry passageway exit channel and heating passageway all be perpendicular, then the protective gas that is full of in the heating passageway then becomes difficult to outwards spill from entry and export, plays better solar terms effect.

The present invention may be further configured in a preferred embodiment as: entrance and exit section top all are provided with work piece elevating system, work piece elevating system is including connecting in entrance or exit section top and being vertical support, along vertical direction sliding connection in vertical support remove the frame, connect in removing the carrier that the frame is used for bearing the work piece.

Through adopting above-mentioned technical scheme, can put into the conveyor to inside from the inlet channel with the work piece department, make conveyor realize the conveying to the work piece, utilize work piece elevating system to take out the work piece from exit channel after the heating cooling is accomplished, make conveyor's process section wear to establish the lateral wall of inlet section and outlet section, also make work piece and conveyor be non-same entry, then can reduce the open area of inlet section and outlet section, reduce the overflow of inside gas, reach better solar terms effect.

The present invention may be further configured in a preferred embodiment as: horizontal supports are installed at the tops of the inlet section or the outlet section, and the vertical supports are connected to the horizontal supports in a sliding mode along the horizontal direction.

Through adopting above-mentioned technical scheme, make vertical support can take the work piece to remove on horizontal stand, then conveniently shift the surface of work piece to the conveyer belt, need not to carry out all the other operations again, be convenient for go up unloading to the work piece.

To sum up, the utility model discloses a following at least work piece and the beneficial technological effect of solar terms tunnel furnace of the non-same access & exit of conveyor:

the inlet and outlet of the workpiece and the conveying device are set to be different, so that the size of an opening in the side wall of the furnace body for setting the conveying device can be reduced, the overflow of protective gas in the furnace body is reduced, and a better gas saving effect is achieved;

the inlet channel and the outlet channel which are vertical to the conveying direction of the conveying belt are utilized to enable the inside protective gas to be filled in the whole furnace body, and the overflow of the protective gas is reduced.

Drawings

Fig. 1 is a partial structural schematic diagram of the first embodiment.

Fig. 2 is a schematic partial structural diagram of a workpiece lifting mechanism according to this embodiment.

Fig. 3 is a schematic view of a part of the structure of the second embodiment.

Reference numerals: 1. a furnace body; 11. an inlet section; 12. a high temperature muffle furnace; 13. a cooling section; 14. an outlet section; 2. an inlet channel; 3. an outlet channel; 4. a conveying device; 41. a conveyor belt; 411. a process segment; 412. a return section; 42. a drive mechanism; 421. a drive wheel; 422. a drive motor; 5. a delivery opening; 43. pushing the plate; 44. a power cylinder; 6. a workpiece lifting mechanism; 61. a vertical support; 611. a vertical lead screw; 612. a vertical motor; 62. a movable frame; 63. a carrier; 7. a horizontal support; 71. a horizontal lead screw; 15. a heating channel; 16. a flange plate; 17. sealing the rubber plate; 18. a driving wheel.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

The first embodiment is as follows:

referring to fig. 1, for the gas-saving tunnel furnace with non-identical entrance/exit of workpiece and conveying device disclosed by the present invention, comprising a furnace body 1, the furnace body 1 comprises an entrance section 11, a high temperature muffle furnace 12, a cooling section 13 and an exit section 14 which are connected in sequence by a flange 16, a conveying device 4 for horizontally conveying the workpiece is arranged inside the furnace body 1, an entrance channel 2 for placing the workpiece is formed at the entrance section 11 at the head end of the furnace body 1, an exit channel 3 for taking out the workpiece is formed at the exit section 14 at the tail end of the furnace body 1, an included angle exists between the entrance channel 2 and the exit channel 3 and the horizontal conveying direction of the conveying device 4, the preferable entrance channel 2 and the exit channel 3 are vertical and perpendicular to the conveying direction of the workpiece, a heating channel 15 which is horizontal and perpendicular to the entrance channel 2 is formed in the high temperature muffle furnace 12, and the height of the entrance section 11 and the exit section 14 is higher than the top of the high temperature muffle furnace 12, in the working process, the protective gas with high specific gravity can be filled in the whole furnace body 1, so that a good protection effect is achieved on the workpiece, and the gas saving effect is achieved.

Entrance section 11 is L shape and entrance section 11 and export section 14 are the symmetry with the central line of whole furnace body 1 length direction, and the equal integrated into one piece in entrance section 11 and export section 14 one end in opposite directions has a ring flange 16, has ring flange 16 at high temperature muffle furnace 12 both ends and at the equal integrated into one piece in cooling section 13 both ends, and entrance section 11, high temperature muffle furnace 12, cooling section 13 and export section 14 loop through ring flange 16 seal fixed connection. The inner wall of the cooling section 13 can be provided with a cooling water pipe to carry out heat exchange cooling on the internal workpiece.

The conveying device 4 comprises a conveying belt 41 in circulating transmission, the conveying belt 41 comprises a process section 411 sequentially penetrating through an inlet section 11, a high-temperature muffle furnace 12, a cooling section 13 and an outlet section 14, two ends of the process section 411 respectively penetrate through a side wall of the opposite side of the inlet section 11 and the opposite side of the outlet section 14, a conveying opening 5 for penetrating the process section 411 is formed in each side wall of the opposite side of the inlet section 11 and the opposite side of the outlet section 14, the size of the conveying opening 5 is similar to that of the process section 411, a sealing rubber plate 17 abutting against the surface of the process section 411 is arranged at the position of the conveying opening 5, the process section 411 and the conveying opening 5 can be dynamically sealed, the bottom surface of the process section 411 abuts against the bottom of the inner wall of the furnace body 1, two ends of the process section 411 respectively wind around a driving wheel 18, a return section 412 is integrally formed between the two ends of the process section 411 outside the furnace body 1, the return section 412 is parallel to the process section 411 and, and a driving mechanism 42 for driving the whole conveyor belt 41 to rotate circularly is arranged outside the furnace body 1, the driving mechanism 42 comprises two driving wheels 421 abutting against the return section 412 and a driving motor 422 driving one of the driving wheels 421 to rotate, and the conveyor belt 41 is tensioned and coated on the outer walls of the two driving wheels 421.

Referring to fig. 1 and 2, in order to facilitate loading and unloading of a workpiece, workpiece lifting mechanisms 6 are disposed at the top of the inlet section 11 and the outlet section 14, each workpiece lifting mechanism 6 includes a horizontal bracket 7 connected to the top of the inlet section 11 or the outlet section 14 and horizontal to the top, the direction of the horizontal bracket 7 is parallel to the width direction of the conveyor belt 41, a vertical bracket 61 vertically disposed is slidably connected to the horizontal bracket 7 along the length direction thereof, a horizontal lead screw 71 parallel to the horizontal bracket 7 is rotatably connected to the horizontal bracket 7, the horizontal lead screw 71 is threaded to the vertical bracket 61, a horizontal motor (not labeled in the figure) driving the horizontal lead screw 71 to rotate is fixedly mounted on the horizontal bracket 7, the vertical bracket 61 extends into the inlet channel 2 and is close to the surface of the conveyor belt 41, a moving frame 62 is slidably connected to the vertical bracket 61, move and to hold the carrier 63 that the last fixed mounting of frame 62 was used for bearing the weight of the work piece and the cross-section roughly is the L shape, hold the one end that carrier 63 kept away from its vertical lateral wall and be certain angle downward sloping, rotate on vertical support 61 and be connected with one and be vertical lead screw 611, vertical lead screw 611 wears to establish and threaded connection moves frame 62, and fixed mounting has a vertical motor 612 that drives vertical lead screw 611 pivoted on vertical support 61. The workpiece is conveyed to the surface of the bearing member 63 above the inlet section 11, when the workpiece is conveyed to the surface of the bearing member 63, the workpiece is not completely arranged on the surface of the bearing member 63, but the workpiece cannot automatically slide down due to friction force between the workpiece and the surface of the bearing member 63, then the moving frame 62 moves downwards to convey the workpiece to the surface close to the conveying belt 41, and after the workpiece contacts the surface of the conveying belt 41, the whole vertical support 61 is moved to transfer the workpiece to the surface of the conveying belt 41, so that feeding of the workpiece is completed, and the workpiece lifting mechanisms 6 above the outlet section 14 are identical in structure, so that blanking of the workpiece is completed.

In the implementation process of the present embodiment, before starting to work, the protective gas is filled in the furnace body 1, and the rest of the gas in the furnace body 1 is evacuated, so that the protective gas with high specific gravity can be filled in the whole furnace body 1, and thus a good heating effect can be achieved for the internal workpiece, and the protective gas in the operation process is difficult to overflow from the inside of the furnace body 1, the workpiece is conveyed downwards to the surface of the conveying belt 41 by the workpiece lifting mechanism 6, the conveying belt 41 is driven by the driving mechanism 42 to perform circular transmission, so that the workpiece is driven to sequentially pass through the high-temperature muffle furnace 12 and the cooling section 13, and then the workpiece is sent out from the surface of the conveying belt 41 by the workpiece lifting mechanism 6.

Example two:

a high-specific gravity controlled atmosphere gas-saving tunnel furnace is different from the first embodiment in that, referring to fig. 3, a conveying device 4 comprises a push plate 43 which is connected with an opening of an inlet section 11 in a sealing and sliding mode along the conveying direction of a workpiece, the push plate 43 is integrally rectangular, the push plate 43 is made of rubber materials, a power cylinder 44 is fixedly installed on the outer wall of the inlet section 11, a piston rod of the power cylinder 44 is connected with the push plate 43, and the power cylinder 44 can be a hydraulic cylinder or an air cylinder. In the actual working process, the workpiece is conveyed to the bottom wall inside the furnace body 1 by the workpiece lifting mechanism 6 (the structure is the same as the workpiece lifting mechanism 6 marked in fig. 2), the push plate 43 is pushed by the power cylinder 44 to move the workpiece towards the outlet section 14, after the push plate 43 of the power cylinder 44 retracts, the next workpiece is placed between the previous workpiece and the push plate 43, then the power cylinder 44 synchronously pushes the multiple workpieces forwards, the stroke of the piston rod of the power cylinder 44 is consistent with the dimension of each workpiece along the workpiece conveying direction, and then the arranged workpieces are pushed forwards by the power cylinder 44 each time.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a work piece and conveyor non-same access & exit's throttle tunnel furnace, includes furnace body (1) that the head and the tail is formed with inlet channel (2) and exit channel (3), passes inside conveyor (4) of furnace body (1), furnace body (1) is including inlet section (11), high temperature muffle furnace (12), cooling zone (13) and export section (14) that connect gradually, its characterized in that: entrance channel (2) are formed in entrance section (11) and are used for putting into work piece to conveyor (4), exit channel (3) are formed in exit section (14) and are used for outwards taking out the work piece of conveyor (4) department, conveyor (4) are the level and are used for the part of carrying the work piece to arrange in furnace body (1), there is the contained angle between entrance channel (2) and exit channel (3) and conveyor (4)'s the horizontal direction of transfer.

2. A throttled tunnel furnace with a non-shared entrance for workpieces and conveyors as in claim 1 wherein: conveyor (4) are including conveyer belt (41), drive conveyer belt (41) endless drive's actuating mechanism (42), conveyer belt (41) are including process section (411) that passes inlet section (11), high temperature muffle furnace (12), cooling zone (13) and export section (14) in proper order, arrange back journey section (412) of furnace body (1) outer wall in, arrange furnace body (1) outside and contradict in process section (411) and drive wheel (18) of returning journey section (412) junction, actuating mechanism (42) are arranged outside furnace body (1) in.

3. A throttled tunnel furnace with a non-shared workpiece entrance and exit as set forth in claim 2, wherein: the process section (411) is horizontal, a conveying opening (5) used for penetrating the process section (411) is formed in one side wall, away from the inlet section (11) and the outlet section (14), and the conveying opening (5) is dynamically sealed with the process section (411).

4. A throttled tunnel furnace with a non-shared entrance for workpieces and conveyors as in claim 1 wherein: the conveying device (4) comprises a push plate (43) which is connected to the inlet section (11) in a sliding mode in a sealing mode along the horizontal direction and far away from one side wall of the high-temperature muffle furnace (12), and a power cylinder (44) which is arranged outside the furnace body (1) and connected to the push plate (43).

5. The damper tunnel oven of the non-shared entrance/exit of the workpiece and the conveyor according to claim 3 or 4, wherein: entrance channel (2) and exit channel (3) all are vertical, be formed with in high temperature muffle furnace (12) and be the level and be perpendicular heating channel (15) with entrance channel (2).

6. The work piece and conveyor non-shared entry and exit gas-saving tunnel oven of claim 5, wherein: entrance section (11) and export section (14) top all are provided with work piece elevating system (6), work piece elevating system (6) including connect in entrance section (11) or export section (14) top and be vertical support (61), along vertical direction sliding connection in vertical support (61) remove frame (62), connect in removing and put up (62) and be used for bearing carrier (63) of work piece.

7. The work piece and conveyor non-shared entry and exit gas-saving tunnel oven of claim 6, wherein: horizontal support (7) that are the level are all installed at entry section (11) or export section (14) top, vertical support (61) along horizontal direction sliding connection in horizontal support (7).