CN118500106A

CN118500106A - Well type resistance furnace

Info

Publication number: CN118500106A
Application number: CN202410946830.7A
Authority: CN
Inventors: 张小利; 姚亮; 张冰冰; 陈克华; 闫磊
Original assignee: Tongchuan Coal Mine Machinery Co ltd
Current assignee: Tongchuan Coal Mine Machinery Co ltd
Priority date: 2024-07-16
Filing date: 2024-07-16
Publication date: 2024-08-16
Anticipated expiration: 2044-07-16
Also published as: CN118500106B

Abstract

The invention relates to the technical field of resistance furnaces, and in particular discloses a well-type resistance furnace, which comprises: the electric resistance wire is arranged on the inner wall of the furnace body, the hanging bracket comprises a hanging scaffold and a chassis, the hanging scaffold is clamped inside the furnace body, and the chassis is fixedly arranged below the hanging scaffold; the top of the chassis is provided with a moving groove, the moving groove is connected end to form a closed loop, a plurality of supporting pieces are slidably arranged in the moving groove, and the supporting pieces are used for supporting a workpiece; according to the well-type resistance furnace, the workpieces on each supporting table can be always in a moving state, so that the workpieces in the hanging frame can be continuously and repeatedly circulated and alternated in the inner layer and the outer layer, the heating area experienced by each workpiece is kept the same, the workpieces can be uniformly heated, the heating progress is kept consistent, the time consumption for heating all the workpieces is nearly the same, and the probability of overheating the workpieces is effectively reduced.

Description

Well type resistance furnace

Technical Field

The invention relates to the technical field of resistance furnaces, in particular to a well-type resistance furnace.

Background

A well-type resistance furnace is an electric furnace for industrial use, and is mainly used for high-temperature treatment and heat treatment, and is generally in a vertical cylindrical shape, and looks like a well, so that the well-type resistance furnace is generally made of a high-temperature heat-resistant metal alloy, and can withstand high-temperature and resistance heating. The well-type resistance furnace generates heat through a resistance wire or a resistance heating element placed inside, and an electric current converts the energy into heat through a resistance heating effect generated by the resistance wire, thereby heating an inner space, and is generally equipped with a temperature sensor and a control system to precisely control an inner temperature.

Disclosed in the patent document with the grant publication number CN215002952U is a well-type resistance furnace tooling, comprising a base; the lower ends of the support columns are respectively connected with the base, and the connection positions are positioned at the edge of the base; the middle tray is arranged above the base and is connected with the middle parts of the support columns; the upright post penetrates through the middle tray, the lower end of the upright post is connected with the base, and the connecting position of the upright post is positioned in the base. According to the well type resistance furnace tool, when workpieces are heated in the well type furnace, as each workpiece penetrates through the placement hole of the middle tray, the movable range is controlled by the middle tray, friction and collision are avoided, scratches are avoided on the surfaces of the workpieces, and the qualification rate of the workpieces is improved. The shelf is arranged below the middle shelf, and has a good supporting effect on the middle shelf, so that the thermal deformation of the middle shelf can be slowed down. The lifting rings are arranged, so that a workpiece can be installed into the tool at one time, and the crown block is used for completing the quenching process and tempering into the furnace. The middle tray and the shelf with proper numbers can be selected according to the length of the workpiece to be processed, so that the practicability of the tool is improved. And a large gap is reserved among all parts of the tool, so that the tool is prevented from being severely influenced by thermal expansion and cold contraction in the heat treatment process, and is deformed after long-time use, and the service life is prolonged.

But there is the following problem in this scheme, each work piece is the hole of placing of passing the middle tray, although can pass through the movable range of middle tray control work piece, make not have friction, collision each other between the work piece, but restricted the position of work piece equally, well formula resistance furnace's heating resistor is located the furnace body inner wall usually, this means that the higher the temperature is close to resistance furnace inner wall, the outer work piece heating rate that is located middle tray outside position can be faster than the inlayer, lead to the inlayer work piece to be heated unevenly in the resistance furnace, the time spent of accomplishing the heating can have the difference, and the condition that the inlayer has not reached standard after the outer heating up to standard will appear when the difference is great, after all work pieces are all heated, the condition of excessive heating can appear to the work piece of outer, the performance quality of work piece receives the influence.

Disclosure of Invention

The invention provides a well-type resistance furnace, which aims to solve the problems that in the related art, inner and outer workpieces are heated unevenly in the resistance furnace, the time consumption for completing heating is different, the condition that the inner workpieces are not up to standard after the outer workpieces are heated up to standard easily occurs, and the outer workpieces are possibly overheated.

The invention relates to a well-type resistance furnace, which comprises a furnace body and a hanging bracket, wherein a resistance wire is arranged on the inner wall of the furnace body, the hanging bracket comprises a hanging bracket and a chassis, the hanging bracket is connected inside the furnace body in a clamping manner, and the chassis is fixedly arranged below the hanging bracket;

the top of the chassis is provided with a moving groove, the moving groove is connected end to form a closed loop, a plurality of supporting pieces are slidably arranged in the moving groove, and the supporting pieces are used for supporting a workpiece;

the movable groove comprises an arc-shaped outer ring groove, a middle ring groove and an inner ring groove, wherein the number of the middle ring grooves is multiple and the middle ring grooves are positioned between the outer ring groove and the inner ring groove, and the ends of the outer ring groove, the middle ring groove and the inner ring groove are sequentially communicated through transition ring grooves to form a closed loop, so that the supporting piece can circularly move in the movable groove;

The bottom of the chassis is also provided with a pushing component which can push the supporting pieces in the outer ring groove to move, so that the supporting pieces push the adjacent supporting pieces to move along the moving groove.

The outer ring groove, the middle ring groove, the inner ring groove and the transition ring groove form a closed-loop type movable groove, so that when one supporting piece in the outer ring groove is pushed to move by the pushing component, the supporting piece can push the adjacent supporting pieces in front to move in the movable groove, all the supporting pieces continuously move in the closed-loop space of the movable groove, the supporting pieces in the inner layer and the outer layer are continuously and circularly alternated, the same advancing track of all the supporting pieces in the resistance furnace is ensured, the experienced heating environments are kept consistent, the required heating time of the workpieces in all the supporting pieces is ensured to be approximately the same, and the situation that excessive heating occurs after all the workpieces reach the heating standard is effectively avoided.

Preferably, the support piece comprises a support table, a limiting ring and a connecting rod, wherein the support table is positioned in the moving groove, the limiting ring is fixedly arranged at the top of the support table and used for supporting and limiting a workpiece, the top end of the connecting rod is arranged in the support table, the bottom end of the connecting rod is close to the bottom wall of the moving groove, the support table and the limiting rod can be used for supporting and placing the workpiece conveniently, limiting the workpiece conveniently, and the supporting table can be pushed to move along the moving groove conveniently through the connecting rod.

Preferably, the inside of brace table has seted up upward spout, well spout and lower spout in proper order from top to bottom along its direction of height, the cross section horizontal direction width of well spout is greater than the cross section horizontal direction width of lower spout, connecting rod sliding fit is inside the lower spout, and the top fixed mounting of connecting rod has the limiting plate that is arranged in the inside of well spout, the top fixedly connected with push rod of limiting plate, the top sliding fit of push rod is inside last spout to can stretch out to the brace table outside by last spout inside when limiting plate removes to rise, can make the push rod go up and down in the brace table, then the push rod stretches out in by last spout, promotes the work piece and lifts in the spacing ring, in order to avoid bonding between work piece and the support piece.

Preferably, a plurality of protruding blocks are arranged at the bottom of the moving groove and used for pushing the connecting rod to rise in the moving process of the supporting table, and the protruding blocks can automatically lift against the connecting rod in the moving process of the supporting table.

Preferably, an arc-shaped groove is formed in the bottom of the chassis, the radian of the arc-shaped groove is the same as that of the outer annular groove, the arc-shaped groove is communicated with the outer annular groove, and a guide mechanism is arranged between the supporting table and the moving groove and used for guiding the supporting table to move along the extending track of the moving groove;

The guide mechanism comprises a ring sleeve rotationally assembled outside the supporting table, a guide rod is arranged on the side wall of the ring sleeve, a guide groove is formed in the side wall of the moving groove, the guide groove is arranged along the extending direction of the moving groove, and the guide rod is slidingly assembled inside the guide groove.

Preferably, two slope tables are arranged on the guide groove, the two slope tables are respectively positioned at two ends of the outer ring groove, the top surface of each slope table extends from the outer ring groove to the inner ring groove and the middle ring groove and inclines upwards, so that the support table descends when entering the outer ring groove from the inner ring groove, and ascends when entering the middle ring groove from the outer ring groove.

Preferably, the side wall of the movable groove is fixedly provided with a rack, the supporting table is provided with a plurality of tooth grooves matched with the rack, and the tooth grooves are annularly and uniformly distributed along the circumferential direction of the supporting table, so that the supporting table is kept in a vertical state in the running process, cannot incline in the lifting or descending process, and can be enabled to carry the workpiece to rotate in the running process.

Preferably, the guide groove is internally provided with a vibration structure positioned in the middle ring groove and the inner ring groove, and the vibration structure consists of a chute, a horizontal groove and a vertical groove, so that the vibration structure can vibrate the support table in the advancing process of the support table, and the push rod is prevented from being bonded at the bottom of a workpiece.

Preferably, the pushing assembly comprises a turntable and a pushing plate, the turntable is rotationally connected to the bottom of the chassis and is coaxially arranged with the chassis, the pushing plate is fixedly arranged on the side wall of the turntable, and one end of the pushing plate, far away from the turntable, extends to one side of the arc-shaped groove.

Preferably, a driving mechanism is arranged between the furnace body and the turntable and is used for driving the turntable to rotate on the chassis, the driving mechanism comprises a motor fixedly arranged on the outer side of the bottom of the furnace body, the output end of the motor is provided with a rotary table positioned in the furnace body, the top of the rotary table is provided with a clamping groove, the bottom of the turntable is fixedly provided with a clamping block, the clamping block is slidably connected inside the clamping groove, and the turntable can be driven to rotate when the motor drives the rotary table to rotate, so that the push plate pushes the supporting table in the outer ring groove to move.

The beneficial effects are that:

When the invention is used, the workpieces on each supporting table can be always in a moving state, so that the workpieces in the hanging frame can be continuously and repeatedly circulated and alternated in the inner layer and the outer layer, the heating areas experienced by each workpiece are kept consistent, the workpieces can be uniformly heated, the heating progress is kept consistent, the time consumption of heating all the workpieces is nearly the same, the probability of overheating the workpieces is effectively reduced, and the quality of the workpieces is improved.

Drawings

Fig. 1 is a perspective view of the present invention.

FIG. 2 is a cross-sectional view of the furnace body of the present invention.

Fig. 3 is an enlarged schematic view of the structure of fig. 2 a according to the present invention.

Fig. 4 is a perspective view of the hanger of the present invention.

Fig. 5 is a schematic view of the structure of the bottom of the hanger of the present invention.

Fig. 6 is a front view of fig. 4 of the present invention.

Fig. 7 is a perspective view of the chassis and support table of the present invention.

Fig. 8 is an enlarged schematic view of the structure of fig. 7B according to the present invention.

Fig. 9 is a top view of fig. 7 in accordance with the present invention.

Fig. 10 is a perspective view of the support of the present invention.

Fig. 11 is a cross-sectional view of a support table of the present invention.

Reference numerals:

10. A furnace body; 11. an end cap; 12. a pedestal; 13. a slot; 14. an alignment groove; 20. a hanging bracket; 21. a hanging scaffold; 211. a hanging ring; 212. an alignment block; 22. a chassis; 221. an arc-shaped groove; 222. a rod; 30. a support; 31. a support table; 311. an upper chute; 312. a middle chute; 313. a lower chute; 314. tooth slots; 315. a universal ball; 32. a limiting ring; 33. a connecting rod; 331. a limiting plate; 332. a push rod; 40. a moving groove; 41. an outer ring groove; 42. a middle ring groove; 43. an inner ring groove; 44. a transition ring groove; 45. a bump; 46. a rack; 50. a pushing assembly; 51. a turntable; 52. a push plate; 60. a guide mechanism; 61. a ring sleeve; 62. a guide rod; 63. a guide groove; 631. oscillating the structure; 6311. a chute; 6312. a horizontal slot; 6313. a vertical groove; 64. a grade table; 70. a driving mechanism; 71. a motor; 72. a rotary table; 73. a clamping groove; 74. and (5) clamping blocks.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

As shown in fig. 1 to 11, the well-type resistance furnace of the present invention includes a furnace body 10, a hanger 20, and a plurality of supports 30, a moving slot 40, a pushing assembly 50 for pushing the supports 30 to move, a guide mechanism 60 for guiding the supports 30 to move, and a driving mechanism 70.

As shown in fig. 1, an end cover 11 and a resistance wire (not shown) are disposed on the furnace body 10, the end cover 11 is located at the top of the furnace body 10 and is used for sealing the interior of the furnace body 10, and the resistance wire is disposed on the inner wall of the furnace body 10 and is used for heating the workpiece in the furnace body 10.

As shown in fig. 2, a pedestal 12 is fixedly installed at the bottom end of the furnace body 10, a slot 13 is formed in the pedestal 12, a hanger 20 can be supported and positioned, and a positioning slot 14 is formed in the top of the furnace body 10, so that the hanger 20 and the pedestal 12 are vertically aligned.

As shown in fig. 2 to 5, the hanger 20 is provided inside the furnace body 10, can slide up and down inside the furnace body 10, and can be separated from the furnace body 10 in the upward sliding. The hanger 20 includes a hanging scaffold 21 and a chassis 22, and the chassis 22 is fixedly installed below the hanging scaffold 21.

The hanging ring 211 is fixedly arranged at the top of the hanging plate 21 and used for carrying the hanging hook of the hanging bracket 20, the aligning block 212 matched with the aligning groove 14 is fixedly arranged at one side of the hanging plate 21 close to the furnace body 10, and when the hanging plate 21 is placed in the furnace body 10, the aligning block 212 can be inserted into the aligning groove 14 to ensure the aligning of the chassis 22 and the pedestal 12.

The bottom of chassis 22 has offered arc wall 221, and the bottom fixedly connected with of chassis 22 has the inserted link 222 with slot 13 looks adaptation, can be put into the inside back of furnace body 10 by gallows 20 and support chassis 22 by pedestal 12 to make inserted link 222 insert the inside of slot 13, restriction chassis 22 can not rotate in the inside furnace body 10.

Referring to fig. 6 to 11, a plurality of supporters 30 are provided inside the moving slot 40 to support the workpiece. The support 30 comprises a support table 31, a limiting ring 32 and a connecting rod 33, wherein the support table 31 is positioned in the moving groove 40, the limiting ring 32 is fixedly arranged at the top of the support table 31 and used for limiting a workpiece, the top end of the connecting rod 33 is arranged in the support table 31, the bottom end of the connecting rod 33 is close to the bottom wall of the moving groove 40 and can be matched with the pushing assembly 50, and the connecting rod 33 moves together with the support table 31 under the pushing of the pushing assembly 50.

Referring to fig. 10 and 11, an upper chute 311, a middle chute 312 and a lower chute 313 are sequentially formed in the support table 31 from top to bottom along the height direction thereof, the horizontal width of the cross section of the middle chute 312 is greater than that of the lower chute 313, a connecting rod 33 is slidably mounted in the lower chute 313, a limiting plate 331 positioned in the middle chute 312 is fixedly mounted at the top end of the connecting rod 33, a push rod 332 is fixedly connected to the top end of the limiting plate 331, and the top end of the push rod 332 is slidably mounted in the upper chute 311 and can extend out of the support table 31 from the interior of the upper chute 311 when the limiting plate 331 is moved and lifted.

The connecting rod 33 is limited by the limiting plate 331, so that the connecting rod 33 cannot be separated from the supporting table 31, and when the connecting rod 33 slides and rises along the lower chute 313, the limiting plate 331 can be pushed to rise in the middle chute 312, then the limiting plate 331 pushes the push rod 332 to slide in the upper chute 311 and extend out of the supporting table 31, a workpiece is jacked up by the supporting table 31, the workpiece slides up and down in the limiting ring 32, and adhesion between the workpiece, the limiting ring 32 and the supporting table 31 under temperature change is avoided.

A plurality of tooth grooves 314 are uniformly distributed on the supporting table 31 along the circumferential direction thereof so as to be convenient for stirring the rotation of the supporting table 31 during the running process.

Referring to fig. 11, a universal ball 315 is fixedly mounted at the bottom of the support table 31, for supporting the bottom of the support table 31, so as to reduce the friction force applied to the bottom of the support table 31, so that the support table 31 can move well.

Referring to fig. 7 and 9, the moving groove 40 is formed at the top of the chassis 22, and the moving groove 40 is communicated end to form a closed loop so that the supporter 30 is circularly moved inside.

The moving groove 40 comprises an arc-shaped outer ring groove 41, a middle ring groove 42 and an inner ring groove 43, wherein the radian of the outer ring groove 41 is the same as that of the arc-shaped groove 221, and the outer ring groove 41 and the arc-shaped groove 221 are mutually communicated, so that when the supporting table 31 is positioned in the outer ring groove 41, the bottom end of a connecting rod 33 in the supporting table 31 can penetrate through the arc-shaped groove 221 and extend out from the lower part of the base plate 22, the middle ring groove 42 is a plurality of and is positioned between the outer ring groove 41 and the inner ring groove 43, and the ends of the outer ring groove 41, the middle ring groove 42 and the inner ring groove 43 are sequentially communicated through a transition ring groove 44 to form a closed loop, so that the supporting piece 30 can be guided, the supporting piece 30 can circularly move along the track of the moving groove 40 in the base plate 22, and then a plurality of workpieces can be gradually close to the inner wall of the furnace body 10, so that each workpiece can be uniformly heated.

The bottom of the moving groove 40 is provided with a plurality of hemispherical protruding blocks 45 matched with the connecting rods 33, and the connecting rods 33 can be jacked up by the protruding blocks 45 in the moving process of the supporting table 31, so that the push rods 332 can intermittently extend out of the supporting table 31 and push the workpieces to rise.

Referring to fig. 8, the rack 46 meshed with the tooth slot 314 on the supporting table 31 is fixedly installed on the side wall of the moving slot 40, so that the supporting table 31 can be pushed to rotate by the tooth slot 314 during moving, the workpiece can be automatically heated during moving, the uniformity of heating of the workpiece is improved, the supporting table 31 can not be limited by the rack 46 and the tooth slot 314 to rotate up and down, the supporting piece 30 always keeps vertical to advance, the supporting table 31 is kept vertical during moving and lifting, toppling does not occur, mutual collision between the workpieces is avoided, and the probability of workpiece damage is reduced.

Referring to fig. 7, 8 and 10, a guide mechanism 60 is provided between the support 30 and the moving groove 40 for guiding the movement travel of the support 30 inside the moving groove 40 and for lowering the support 30 from the inner ring groove 43 of the moving groove 40 into the outer ring groove 41 and for lifting the support 30 from the outer ring groove 41 of the moving groove 40 into the middle ring groove 42 to change the height of the support 30 so that the link 33 can protrude from below the chassis 22 when the support 30 passes through the outer ring groove 41.

The guide mechanism 60 includes a ring 61 rotatably assembled outside the support table 31, so that the support table 31 can rotate inside the ring 61, a guide rod 62 is provided on a side wall of the ring 61, a guide groove 63 is provided on a side wall of the moving groove 40, the guide groove 63 is provided along an extending direction of the moving groove 40, the guide rod 62 is slidably assembled inside the guide groove 63, and then guides the support table 31 during movement, so that the support table 31 can travel along an extending track of the moving groove 40, two gradient tables 64 are provided on the guide groove 63, and the two gradient tables 64 are respectively located at both ends of the outer ring groove 41.

When the support table 31 and the ring 61 enter the outer ring groove 41 from the inner ring groove 43, the guide rod 62 slides down along the slope table 64, so that the height of the support table 31 is reduced when the support table moves in the outer ring groove 41, the bottom end of the connecting rod 33 extends out of the arc groove 221 to the lower part of the chassis 22, and when the support table 31 and the ring 61 enter the middle ring groove 42 from the outer ring groove 41, the guide rod 62 slides up along the slope table 64, so that the height of the support table 31 is increased, and the connecting rod 33 is retracted into the moving groove 40.

Referring to fig. 7, the guide groove 63 is internally provided with a vibrating structure 631 located in the middle ring groove 42 and the inner ring groove 43, and the vibrating structure 631 is composed of a chute 6311, a horizontal groove 6312 and a vertical groove 6313, so that the guide rod 62 can be lifted by the chute 6311 of the vibrating structure 631 when moving along the guide groove 63, then the guide rod 62 enters the horizontal groove 6312 from the chute 6311, when moving to the end of the horizontal groove 6312, the guide rod 62 falls in the vertical groove 6313, the support table 31 falls down quickly, and then the support table 31 and a workpiece are vibrated, so that the workpiece is prevented from being bonded with the push rod 332 under the condition of temperature change, and the connecting rod 33 can be reset normally after the workpiece is pushed to be lifted, so that the connecting rod 33 can be better extended out of the arc groove 221.

Referring to fig. 5, the pushing assembly 50 is disposed at the bottom of the chassis 22, and is capable of pushing the supporting members 30 to move along the moving groove 40, so that under the pushing of the adjacent supporting members 30, all the supporting members 30 can move synchronously, and move circularly along the track of the moving groove 40, so that the inner and outer workpieces in the hanger 20 can be subjected to position exchange, and a plurality of workpieces can be alternately moved to be close to the inner wall of the furnace body 10, thereby ensuring that the workpieces at different positions in the hanger 20 can be uniformly heated, and reducing the probability of overheating.

The pushing assembly 50 comprises a turntable 51 and a pushing plate 52, the turntable 51 is rotatably connected to the bottom of the chassis 22 and is coaxially arranged with the chassis 22, the pushing plate 52 is fixedly installed on the side wall of the turntable 51, one end of the pushing plate 52 far away from the turntable 51 extends to one side of the arc-shaped groove 221, the pushing plate 52 is driven to rotate around the central shaft of the chassis 22 through rotation of the turntable 51 at the bottom of the chassis 22, and the connecting rod 33 extending out of the arc-shaped groove 221 is pushed to move in rotation to drive the supporting table 31 to move along the moving groove 40.

Referring to fig. 2 and 3, a drive mechanism 70 is disposed between the furnace body 10 and the push assembly 50 for driving the turntable 51 to rotate on the chassis 22, which in turn pushes the support 30 forward.

The driving mechanism 70 comprises a motor 71 fixedly arranged on the outer side of the bottom of the furnace body 10, a rotary table 72 positioned in the furnace body 10 is arranged at the output end of the motor 71, a clamping groove 73 is formed in the top of the rotary table 72, a clamping block 74 is fixedly arranged at the bottom of the rotary table 51, and the clamping block 74 is slidably connected in the clamping groove 73.

After the hanger 20 is placed in the furnace body 10, the clamping blocks 74 on the turntable 51 are clamped in the clamping grooves 73, so that the motor 71 can drive the turntable 51 to synchronously rotate when driving the turntable 72 to rotate, and the push plate 52 is driven to rotate around the turntable 51.

Working principle: the workpieces are inserted into the limiting rings 32 in the supporting pieces 30 one by one, the bottom ends of the workpieces are supported by the supporting tables 31, then the hanging frame 20 is placed in the furnace body 10, the aligning blocks 212 are inserted into the aligning grooves 14 to align, the inserting rods 222 on the chassis 22 are accurately inserted into the inserting grooves 13 of the pedestal 12, meanwhile, the clamping blocks 74 on the turntable 51 can be accurately inserted into the clamping grooves 73 on the rotating table 72, and the end cover 11 is closed to heat the workpieces;

The motor 71 drives the rotary table 72 to rotate and then drives the rotary table 51 to rotate, so that the push plate 52 rotates around the rotary table 51, the connecting rod 33 extending from the arc-shaped groove 221 is pushed, the supporting table 31 slides along the guide groove 63 with the guide rod 62, the supporting table 31 is guided to move along the outer ring groove 41 and push the adjacent supporting table 31 to move forward, all the supporting tables 31 can synchronously move along the moving groove 40 under the mutual pushing of the supporting tables 31, the supporting tables 31 in the outer ring groove 41 gradually enter the middle ring groove 42, the supporting tables 31 in the middle ring groove 42 gradually enter the inner ring groove 43, and the supporting tables 31 in the inner ring groove 43 gradually enter the outer ring groove 41, so that a circulation is formed, and the supporting piece 30 and a workpiece are kept in a moving state.

In the invention, in the process of heating the workpieces, the workpieces on each supporting table 31 can be always in a moving state, so that the workpieces in the hanging frame 20 can be continuously and repeatedly circularly alternated in the inner and outer layers, the heating area experienced by each workpiece is kept the same, each workpiece can be uniformly heated, the heating progress is kept consistent, the time consumption of heating all the workpieces is nearly the same, the probability of overheating the workpieces is effectively reduced, and the quality of the workpieces is improved.

While embodiments of the present invention have been shown and described above, it will be understood that the above embodiments are illustrative and not to be construed as limiting the invention, and that variations, modifications, alternatives and variations may be made to the above embodiments by one of ordinary skill in the art within the scope of the invention.

Claims

1. The well-type resistance furnace comprises a furnace body (10) and a hanging bracket (20), wherein resistance wires are arranged on the inner wall of the furnace body (10), and the well-type resistance furnace is characterized in that the hanging bracket (20) comprises a hanging bracket (21) and a chassis (22), the hanging bracket (21) is clamped inside the furnace body (10), and the chassis (22) is fixedly arranged below the hanging bracket (21);

a movable groove (40) is formed in the top of the chassis (22), the movable groove (40) is connected end to form a closed loop, a plurality of supporting pieces (30) are slidably arranged in the movable groove (40), and the supporting pieces (30) are used for supporting a workpiece;

The movable groove (40) comprises an arc-shaped outer ring groove (41), an intermediate ring groove (42) and an inner ring groove (43), wherein the intermediate ring groove (42) is a plurality of intermediate ring grooves (41) and is positioned between the outer ring groove (41) and the inner ring groove (43), and the ends of the outer ring groove (41), the intermediate ring groove (42) and the inner ring groove (43) are sequentially communicated through a transition ring groove (44) to form a closed loop, so that the supporting piece (30) can circularly move in the movable groove (40);

the bottom of the chassis (22) is also provided with a pushing component (50) which can push the support pieces (30) in the outer ring groove (41) to move so as to push the adjacent support pieces (30) to move along the moving groove (40).

2. The well-type resistance furnace according to claim 1, wherein the supporting member (30) comprises a supporting table (31), a limiting ring (32) and a connecting rod (33), the supporting table (31) is located in the moving groove (40), the limiting ring (32) is fixedly installed at the top of the supporting table (31) and used for limiting the workpiece support, the top end of the connecting rod (33) is arranged in the supporting table (31), and the bottom end of the connecting rod (33) is close to the bottom wall of the moving groove (40).

3. The well-type resistance furnace according to claim 2, wherein an upper chute (311), a middle chute (312) and a lower chute (313) are sequentially formed in the supporting table (31) from top to bottom along the height direction of the supporting table, the width of the middle chute (312) in the horizontal direction is larger than that of the lower chute (313), the connecting rod (33) is slidably assembled in the lower chute (313), a limiting plate (331) positioned in the middle chute (312) is fixedly arranged at the top end of the connecting rod (33), a push rod (332) is fixedly connected to the top of the limiting plate (331), and the top end of the push rod (332) is slidably assembled in the upper chute (311) and can extend out of the supporting table (31) from the inside of the upper chute (311) when the limiting plate (331) is moved and lifted.

4. A shaft furnace according to claim 3, characterized in that the bottom of the moving trough (40) is provided with a plurality of lugs (45), the lugs (45) being adapted to push the connecting rod (33) up during the movement of the support table (31).

5. The well-type resistance furnace according to claim 2, wherein the bottom of the chassis (22) is provided with an arc groove (221), the arc groove (221) and the outer ring groove (41) have the same radian and are mutually communicated, and a guide mechanism (60) is arranged between the supporting table (31) and the moving groove (40) and used for guiding the supporting table (31) to move along the extending track of the moving groove (40);

The guide mechanism (60) comprises a ring sleeve (61) rotationally assembled outside the supporting table (31), a guide rod (62) is arranged on the side wall of the ring sleeve (61), a guide groove (63) is formed in the side wall of the moving groove (40), the guide groove (63) is arranged along the extending direction of the moving groove (40), and the guide rod (62) is slidably assembled inside the guide groove (63).

6. The well-type resistance furnace according to claim 5, wherein two slope stages (64) are arranged on the guide groove (63), the two slope stages (64) are respectively positioned at two ends of the outer ring groove (41), the top surface of the slope stage (64) extends from the outer ring groove (41) to the inner ring groove (43) and the middle ring groove (42) and inclines upwards, so that the supporting stage (31) descends when entering the outer ring groove (41) from the inner ring groove (43), and ascends when entering the middle ring groove (42) from the outer ring groove (41).

7. The well-type resistance furnace according to claim 6, wherein racks (46) are fixedly installed on the side walls of the movable grooves (40), a plurality of tooth grooves (314) matched with the racks (46) are formed in the supporting table (31), and the tooth grooves (314) are annularly and uniformly distributed along the circumferential direction of the supporting table (31).

8. The shaft furnace according to claim 7, wherein the guide groove (63) is internally provided with oscillating structures (631) located in the middle ring groove (42) and the inner ring groove (43), and the oscillating structures (631) are composed of a chute (6311), a horizontal groove (6312) and a vertical groove (6313).

9. The well-type electric resistance furnace according to claim 5, wherein the pushing assembly (50) comprises a turntable (51) and a pushing plate (52), the turntable (51) is rotatably connected to the bottom of the chassis (22) and is coaxially arranged with the chassis (22), the pushing plate (52) is fixedly installed on the side wall of the turntable (51), and one end of the pushing plate (52) away from the turntable (51) extends to one side of the arc-shaped groove (221).

10. The well-type resistance furnace according to claim 9, wherein a driving mechanism (70) is arranged between the furnace body (10) and the turntable (51) and is used for driving the turntable (51) to rotate on the chassis (22), the driving mechanism (70) comprises a motor (71) fixedly installed on the outer side of the bottom of the furnace body (10), an output end of the motor (71) is provided with a rotary table (72) located inside the furnace body (10), a clamping groove (73) is formed in the top of the rotary table (72), a clamping block (74) is fixedly installed at the bottom of the turntable (51), and the clamping block (74) is slidably connected inside the clamping groove (73).