CN212778588U

CN212778588U - Regional independent control type beat type rapid cooling tunnel furnace

Info

Publication number: CN212778588U
Application number: CN202021921071.2U
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: 2020-09-04
Filing date: 2020-09-04
Publication date: 2021-03-23
Anticipated expiration: 2030-09-04

Abstract

The utility model relates to a but quick cooling tunnel furnace of regional independent control type beat formula, it includes the furnace body that is formed with inlet channel and exit channel including the head and the tail, passes furnace body inlet channel and exit channel's conveyor, the furnace body is including the high temperature muffle section and the cooling zone that set gradually, conveyor is including passing inlet channel and exit channel's transport piece, the drive that the piece beat formula was removed is carried in the drive, the distance between high temperature muffle section export and the cooling zone is the same with the distance between the adjacent work piece of carrying a surface to place, the drive is carried the distance that the piece removed and the distance between high temperature muffle section export and the cooling zone of drive at every turn. This application has the effect that can promote the work piece quality.

Description

Regional independent control type beat type rapid cooling tunnel furnace

Technical Field

The application relates to the field of tunnel furnaces, in particular to a region independent control type beat type rapid cooling tunnel furnace.

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 controlled atmosphere heat treatment is carried out, a tunnel furnace is often used, a conveying device in the tunnel furnace conveys workpieces and heats and cools the workpieces, the workpieces are conveyed between two heating and cooling positions through the conveying device, but the conveying speed of the conveying device is generally in a constant speed state, a transition region with a certain distance is inevitably formed between the heating position and the cooling position, and the conveying device conveys the products in the transition region between the heating position and the cooling position for a period of time, so that the products are not in a required heating temperature range or a required cooling temperature range, and the quality of the products is influenced.

SUMMERY OF THE UTILITY MODEL

In order to reduce the temperature influence of products passing through a transition zone, the application provides a zone independent control type beat type rapid cooling tunnel furnace.

The application provides a but regional independent control type beat formula rapid cooling tunnel furnace adopts following technical scheme:

the furnace body comprises a high-temperature muffle section, a transition section and a cooling section which are sequentially connected, the conveying device comprises a conveying piece and a driving mechanism, the conveying piece penetrates through the inlet channel and the outlet channel, the driving mechanism drives the conveying piece to move in a beat mode, the distance between the outlet of the high-temperature muffle section and the cooling section is smaller than the distance between adjacent workpieces placed on the surface of the conveying piece, and the distance between the driving mechanism and the adjacent workpieces is the same as the distance between the adjacent workpieces when the driving mechanism drives the conveying piece to move each time.

Through adopting above-mentioned technical scheme, can take under actuating mechanism's effect to carry a realization rhythm of the beat formula to remove, and actuating mechanism carries the distance of piece at every turn rapid movement at the in-process of removal to be the distance between the adjacent work piece of carrying a surface and placing in the drive, then can make the work piece come out to the cooling zone in-process from the high temperature muffle section and can pass through fast, thereby make the work piece can directly enter into and cool off to the cooling zone in, promote the work piece quality, avoid the work piece to receive the temperature influence that is not conform to the requirement and reduce the work piece quality at the in-process of the changeover portion between high temperature muffle section and the cooling zone.

Optionally, the conveying member is provided with a plurality of placing positions for placing the workpiece along the conveying direction, and a heat shield is arranged between adjacent placing positions.

Through adopting above-mentioned technical scheme, utilize the heat shield can keep apart and carry heat radiation and the heat convection influence between the front and back work piece of a surface to utilize the heat shield can confirm to carry the position of placing that a surface is used for placing the work piece, make the work piece place make step-by-step position of every work piece can with the high temperature muffle section in the heating point accurate counterpoint after placing the position, thereby promote the heating effect, promote the work piece quality.

Optionally, a plurality of heating units are arranged in the high-temperature muffle section along the conveying direction of the conveying piece, the heating units correspond to the workpieces one to one, and a heat insulation layer is arranged between every two adjacent heating units.

Through adopting above-mentioned technical scheme, the step-by-step position that makes every work piece can be accurate with the heating unit and adjust well, promotes the accurate control to the work piece temperature to rely on thermal-insulated heat preservation can reduce the temperature influence between the adjacent heating unit, then reduce the heat radiation and the thermal convection influence between the adjacent heating unit.

Optionally, the heat shield is vertical to the surface of the conveying piece and is connected with a material boat parallel to the surface of the conveying piece, and the bottom of the material boat is abutted against the surface of the conveying piece.

By adopting the technical scheme, the position of the workpiece placed on the surface of the conveying piece can be better determined by the material boat, so that the workpiece can be accurately aligned with the heating unit when moving every time, and meanwhile, the workpiece can be stably placed on the surface of the conveying piece.

Optionally, the heating unit includes many electric heating wires, and many electric heating wires evenly set up along work piece direction of delivery, are the series connection between many electric heating wires, and each group heating unit is provided with temperature sensor in the electric heating wire department of intermediate position.

Through adopting above-mentioned technical scheme, utilize electric heating wire to play the heating effect to the work piece to rely on temperature sensor can play accurate temperature monitoring to each group heating unit's intermediate position, thereby make temperature control more accurate, promote the heating quality to the product.

Optionally, the heating units are disposed on the upper and lower sides of the conveying member and correspond to each other.

Through adopting above-mentioned technical scheme, the heating element that sets up about utilizing can play the heating effect to the upper and lower side of work piece simultaneously to make the heating range more comprehensive even, promote the heating quality to the product.

Optionally, the heat insulation layer comprises a mounting part connected to the inner wall of the high-temperature muffle section and parallel to the width direction of the conveying part, and a heat insulation part inserted into the mounting part.

Through adopting above-mentioned technical scheme, promote the installation convenience of thermal-insulated heat preservation piece, can directly peg graft thermal-insulated heat preservation piece in the installed part, also can change or take out or add thermal-insulated heat preservation piece according to actual processing demand simultaneously, adapt to more processing demands.

Optionally, the heat shield can be dismantled the joint in carrying the piece, thermal-insulated heat preservation along work piece direction of delivery sliding connection in high temperature muffle section inner wall.

Through adopting above-mentioned technical scheme, can change the position of heat shield on carrying the piece according to actual work piece size, make the position that the product of different sizes or different processing demands can select to place, change the distance of placing between the adjacent work piece according to actual demand.

Optionally, the driving mechanism includes a roller engaged with the conveying member and a driving motor driving the roller to rotate.

Through adopting above-mentioned technical scheme, utilize driving motor to drive the rotation that the gyro wheel realized the rhythm formula to drive and carry a rhythm formula removal, drive the work piece at every turn and remove appointed distance, make the work piece can pass through the changeover portion fast, also can accurately counterpoint with every heating unit's intermediate position simultaneously, promote the processingquality of product.

Optionally, the driving mechanism includes a clamp plate located above and below the conveying member, a clamp plate driving member for driving the clamp plate to ascend and descend and to be clamped on the conveying member, and a pushing driving member for driving the clamp plate driving member to move along the conveying direction of the workpiece.

Through adopting above-mentioned technical scheme, the splint that rely on the oscilaltion can play the clamping action to carrying the piece to can make under the pushing action of propulsion driving piece carry one section distance of a quick travel, thereby promote the quality of work piece, reduce the temperature influence in the changeover portion.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the distance between the outlet of the high-temperature muffle section and the subsequent cooling section is the same as the distance between adjacent workpieces, so that the heated workpieces can quickly pass through the transition region and directly enter the cooling section for quick cooling under the movement of each beat, and the quality of the workpieces is improved;

2. the position of placing that is used for putting the work piece is formed to the utilization and carries a surface to should place position and every heating element one-to-one, is provided with the heat shield between carrying a surperficial adjacent work piece, utilizes the heat shield can keep apart the influence of the thermal radiation between the front and back work piece and thermal convection, matches the beat formula removal of carrying again, makes the step-by-step position of every work piece and the accurate control of heating accuse temperature point well, promotes the accurate control to the work piece temperature.

Drawings

FIG. 1 is a schematic view of a zone-independently controllable type clocked rapid cooling tunnel furnace according to example 1 of the present application.

FIG. 2 is a schematic view of a zone-independently controllable type clocked rapid cooling tunnel furnace according to example 2 of the present application.

FIG. 3 is a schematic view of a zone-independently controllable, clocked, rapid cooling tunnel furnace of example 3 of the present application, which is primarily used to display heat shields.

Description of reference numerals: 1. a furnace body; 11. an inlet channel; 12. an outlet channel; 2. a conveying device; 21. a conveying member; 211. a process segment; 212. a return section; 22. a drive mechanism; 221. a roller; 222. a drive motor; 223. a splint; 224. a clamp plate driving member; 225. propelling the driving member; 3. a high temperature muffle section; 4. a cooling section; 41. an outer layer; 42. an inner layer; 5. placing bits; 6. a heat shield; 7. a heating unit; 71. an electric heating wire; 8. a heat insulation layer; 81. a mounting member; 82. a heat insulating member; 9. a material boat; 10. a transition wheel; 13. a support; 14. and (5) inserting the blocks.

Detailed Description

The present application is described in further detail below with reference to figures 1-3.

The embodiment of the application discloses a region independent control type beat type rapid cooling tunnel furnace.

Example 1

Referring to fig. 1, the region-independent control type beat-type rapid cooling tunnel furnace comprises a furnace body 1 with an inlet channel 11 and an outlet channel 12 formed at the head and the tail, and a conveying device 2 penetrating through the inlet channel 11 and the outlet channel 12, wherein the furnace body 1 comprises a high-temperature muffle section 3 and a cooling section 4 which are sequentially arranged, the conveying device 2 enables a workpiece to sequentially pass through the high-temperature muffle section 3 and the cooling section 4, the workpiece is heated in the high-temperature muffle section 3, and the workpiece is cooled in the cooling section 4. The conveying device 2 comprises a conveying member 21 for conveying the workpieces and penetrating through the inlet channel 11 and the outlet channel 12 and a driving mechanism 22 for driving the conveying member 21 to move in a beat mode, the workpieces are sequentially placed on the surface of the conveying member 21, the distance between the outlet of the high-temperature muffle section 3 and the inlet of the cooling section 4 is smaller than the distance between the adjacent workpieces on the conveying member 21, and meanwhile, the driving mechanism 22 drives the conveying member 21 to move each time the distance is the same as the distance between the adjacent workpieces. Can be under actuating mechanism 22's effect with the work piece from 3 exports of high temperature muffle section fast move to cooling zone 4 in, reduce the temperature influence of transition zone, promote the work piece quality.

The conveying member 21 is a chain plate type mesh belt and is circularly arranged, the conveying member 21 is divided into a process section 211 entering from the inlet channel 11 and moving out from the outlet channel 12 and a return section 212 connected between two ends of the process section 211 and arranged outside the furnace body 1, and a plurality of transition wheels 10 meshed with the conveying member 21 are arranged on the front side and the rear side outside the furnace body 1. A plurality of placing positions 5 for placing workpieces are arranged on the surface of the conveying member 21 along the conveying direction of the conveying member, the placing positions 5 are uniformly arranged along the conveying direction of the conveying member 21, heat shields 6 are arranged between adjacent placing positions 5, and the heat shields 6 on the conveying member 21 are not shown in fig. 1. The heat shield 6 is formed of a heat insulating material of low thermal conductivity, and may be made of a high temperature resistant asbestos material, which can isolate the influence of thermal radiation and thermal convection between the front and rear workpieces. When the workpiece is placed, the workpiece can be placed between two adjacent heat shields 6, so that heat radiation and heat convection between the adjacent workpieces are reduced.

The driving mechanism 22 comprises a roller 221 meshed with the conveying member 21 and a driving motor 222 driving the roller 221 to rotate, the driving motor 222 is a servo motor, the driving motor 222 can drive the roller 221 to rotate intermittently so as to drive the conveying member 21 to move in a beat mode, the distance for driving the conveying member 21 to move by the roller 221 each time is larger than the distance between the outlet of the high-temperature muffle section 3 and the cooling section 4, the number of the rollers 221 can be two, and the conveying member 21 is wound on the two rollers 221 in an S shape.

In order to realize the para-position heating of the workpiece placed on the surface of the conveying member 21, a plurality of heating units 7 are arranged in the high-temperature muffle section 3, the plurality of heating units 7 are uniformly arranged along the conveying direction of the workpiece, each heating unit 7 comprises a plurality of electric heating wires 71, the lengths of the electric heating wires 71 are parallel to the width direction of the high-temperature muffle section 3, the plurality of electric heating wires 71 are uniformly arranged along the length direction of the high-temperature muffle section 3, the plurality of electric heating wires 71 are electrically connected in series, a temperature sensor is arranged at the electric heating wire 71 in the middle position in each group of heating units 7, a detection probe of the temperature sensor is positioned in the high-temperature muffle section 3 and close to the workpiece, the temperature sensor controls the power supply of each group of heating units 7 to be opened and closed according to the detected temperature output signal, a temperature range required to be heated is preset, and the electric heating wires 71 are controlled to be electrified and heated when the temperature detected by, when the temperature detected by the temperature sensor is higher than the set temperature range, the electric heating wire 71 is controlled to be powered off.

Every heating unit 7 of group is with place position 5 one-to-one on the transport 21 to in order to promote the heating effect to the work piece, heating unit 7 sets up in the upper and lower both sides of transport 21 and in same vertical plane one-to-one, and the work piece is placed under heating unit 7 intermediate position. The distance between the centers of the adjacent heating units 7 is the same as the distance between the adjacent workpieces on the surface of the conveying member 21, and after the conveying member 21 completes one clearance type movement, the workpieces are located in the middle of each group of heating units 7, so that the temperature of the workpieces can be accurately monitored by the temperature sensors corresponding to the positions of the temperature sensors, and the temperature of each group of heating units 7 can be better monitored and controlled. In order to reduce heat radiation and thermal convection between adjacent heating unit 7 and influence, all be provided with thermal-insulated heat preservation 8 at adjacent heating unit 7, thermal-insulated heat preservation 8 is including connecting in 3 inner walls of high temperature muffle section and being parallel installed part 81 with conveying 21 width direction, and the vertical cross-section of installed part 81 is the U-shaped, has connect thermal-insulated heat preservation 82 in installed part 81 interpolation, and thermal-insulated heat preservation 82 is made by the insulation material of low heat conductivity. And the heat shield 6 is placed right under the heat insulating layer 8.

The cooling section 4 comprises an inner layer 42 and an outer layer 41, a cavity is formed between the inner layer 42 and the outer layer 41, the conveying part 21 penetrates through the inner layer 42, a water inlet pipe and a water outlet pipe are arranged at positions, close to the front end and the rear end, of the cooling section 4, and the circulating cooling water can be used for achieving a cooling effect on the workpiece on the surface of the conveying part 21.

The implementation principle of the embodiment 1 is as follows: the workpieces are sequentially placed on the placing positions 5 on the surface of the conveying piece 21, the distance between the adjacent workpieces on the surface of the conveying piece 21 is kept consistent, the position of the workpiece is corresponding to the position under the middle position of the heating unit 7, so that the heating unit 7 and the temperature sensor can monitor the temperature of the workpieces more accurately, the distance of each time the conveying piece 21 moves is kept consistent with the distance of the adjacent workpieces under the driving action of the driving mechanism 22, the workpieces can rapidly move from the outlet of the high-temperature muffle section 3 to the cooling section 4, meanwhile, the workpieces can also be conveyed to the position under the middle position of the next heating unit 7, and the overall quality of the workpieces is improved.

Example 2

Referring to fig. 2, the region-independently controllable type rapid cooling tunnel furnace of the beat type is different from embodiment 1 in that a conveying member 21 is wound by a transition wheel 10 at an inlet passage 11 and transferred to the inside of a furnace body 1, the conveying member 21 is fed out from an outlet passage 12, the conveying member 21 is moved in the beat type at the side of the outlet passage 12 by a driving mechanism 22, the driving mechanism 22 includes a clamping plate 223 above and below the conveying member 21, a clamping plate driving member 224 in the vertical shape is fixedly connected to the outer bracket 13, the clamping plate driving member 224 is a cylinder or an oil cylinder, an output shaft of the clamping plate driving member 224 is connected to the clamping plate 223, the two clamping plates 223 are used for clamping the conveying member 21, and a propelling driving piece 225 is arranged outside the furnace body 1, the propelling driving piece 225 is an air cylinder or an oil cylinder, an output shaft of the propelling driving piece 225 is connected to the bracket 13, and an output shaft of the propelling driving piece 225 is parallel to the conveying direction of the workpiece.

Example 3

Referring to fig. 2 and 3, the region-independently controllable type rapid cooling tunnel furnace of the beat type is different from embodiment 1 in that an insert block 14 is integrally formed at the bottom of a heat shield 6, a plurality of insertion grooves for inserting the insert block 14 are formed on the surface of a conveying member 21 in the conveying direction thereof, and the heat shield 6 is fixed between the conveying member 21 and the insert block 14 by bolts. In order to enable the heating unit 7 and the workpiece to be accurately aligned, the mounting piece 81 is connected to the inner wall of the high-temperature muffle section 3 in a sliding mode along the length direction of the high-temperature muffle section 3, and the mounting piece 81 can also be fixed through bolts, so that the position of the heat insulation layer 8 in the high-temperature muffle section 3 can be changed, the position of the heat insulation layer 8 corresponds to the heat shield 6 on the surface of the conveying piece 21, and meanwhile, the number of the electric heating wires 71 in the heating unit 7 can also be increased. In order to be able to better determine the position of the workpiece placement 5, a horizontal boat 9 is inserted into the heat shield 6 near the bottom, the boat 9 is made of a heat-conducting material, and the bottom of the boat 9 is abutted against the surface of the conveying element 21.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a but regional independent control type beat formula rapid cooling tunnel furnace, includes furnace body (1) that the head and the tail is formed with inlet channel (11) and exit channel (12), passes conveyor (2) of furnace body (1) inlet channel (11) and exit channel (12), furnace body (1) is including high temperature muffle section (3) and cooling zone (4) that set gradually, its characterized in that: the conveying device (2) comprises a conveying member (21) penetrating through an inlet channel (11) and an outlet channel (12), and a driving mechanism (22) for driving the conveying member (21) to move in a beat mode, the distance between the outlet of the high-temperature muffle section (3) and the cooling section (4) is smaller than the distance between adjacent workpieces placed on the surface of the conveying member (21), and the distance for driving the conveying member (21) to move each time by the driving mechanism (22) is the same as the distance between the adjacent workpieces.

2. The zone-independently controllable, clocked, rapid cooling tunnel furnace of claim 1, wherein: the conveying part (21) is provided with a plurality of placing positions (5) for placing workpieces along the conveying direction, and a heat shield (6) is arranged between every two adjacent placing positions (5).

3. The zone-independently controllable, beat-type rapid cooling tunnel furnace according to claim 2, wherein: a plurality of heating units (7) are arranged in the high-temperature muffle section (3) along the conveying direction of the conveying piece (21), the heating units (7) correspond to the workpieces one by one, and a heat insulation layer (8) is arranged between every two adjacent heating units (7).

4. The zone-independently controllable, beat-type rapid cooling tunnel furnace according to claim 2, wherein: the heat shield (6) is vertical to the surface of the conveying piece (21) and is connected with a material boat (9) parallel to the surface of the conveying piece (21), and the bottom of the material boat (9) is abutted against the surface of the conveying piece (21).

5. A zone independently controllable type clocked rapid cooling tunnel furnace according to claim 3, characterized in that: heating element (7) include many electric heating wire (71), and many electric heating wire (71) evenly set up along work piece direction of delivery, are the series connection between many electric heating wire (71), and each heating element (7) of group is located electric heating wire (71) department of intermediate position and is provided with temperature sensor.

6. A zone independently controllable type clocked rapid cooling tunnel furnace according to claim 3, characterized in that: the heating units (7) are arranged on the upper side and the lower side of the conveying piece (21) and correspond to each other.

7. A zone independently controllable type clocked rapid cooling tunnel furnace according to claim 3, characterized in that: the heat insulation layer (8) comprises a mounting part (81) which is connected to the inner wall of the high-temperature muffle section (3) and is parallel to the width direction of the conveying part (21), and a heat insulation part (82) which is inserted into the mounting part (81).

8. A zone independently controllable type clocked rapid cooling tunnel furnace according to claim 3, characterized in that: the heat shield (6) can be detachably connected with the conveying piece (21) in a clamping mode, and the heat insulation layer (8) is connected to the inner wall of the high-temperature muffle section (3) in a sliding mode along the conveying direction of the workpiece.

9. The zone-independently controllable, clocked, rapid cooling tunnel furnace of claim 1, wherein: the driving mechanism (22) comprises a roller (221) meshed with the conveying piece (21) and a driving motor (222) driving the roller (221) to rotate.

10. The zone-independently controllable, clocked, rapid cooling tunnel furnace of claim 1, wherein: the driving mechanism (22) comprises clamping plates (223) positioned above and below the conveying piece (21), a clamping plate driving piece (224) for driving the clamping plates (223) to ascend and descend and to be clamped on the conveying piece (21), and a pushing driving piece (225) for driving the clamping plate driving piece (224) to move along the workpiece conveying direction.