Material moving device for furnace body and furnace body system

Abstract

The utility model belongs to the field of furnace bodies, and particularly relates to a material moving device for a furnace body and a furnace body system.The material moving device for the furnace body comprises a mounting frame, a furnace door mechanism and a material driving mechanism; the furnace door mechanism comprises a linear driving mechanism I arranged on the mounting frame and a furnace door arranged at the output end of the linear driving mechanism I; the material driving mechanism comprises a linear driving mechanism II arranged on the mounting frame and a push-pull rod arranged at the output end of the linear driving mechanism II; a sliding hole is formed in the furnace door, the other end of the push-pull rod penetrates through the sliding hole and extends into the inner side of the furnace door, and the moving directions of the linear driving mechanism I and the linear driving mechanism II are parallel. According to the utility model, materials can be pushed and pulled in the furnace body under the condition that the furnace body is sealed, and the sealing effect of the furnace body is always ensured, so that high-temperature loss or vacuum degree reduction in the furnace body can be avoided, and energy is saved.

Description

Technical Field

[0001] The utility model belongs to the field of furnace bodies, and in particular relates to a material moving device for a furnace body and a furnace body system. Background Art

[0002] Furnaces are widely used in material processing, mechanical processing and other fields, such as vacuum furnaces, heating furnaces, kilns, etc.

[0003] In the field of kiln sintering, when loading materials into the heating furnace, before the materials enter the core processing stage (such as high-temperature sintering), they often need to enter the filter furnace for vacuuming or preheating operations. After vacuuming or preheating, the transition furnace and the heating furnace are connected, and the materials in the filter furnace are transported to the heating furnace. In this way, external air can be prevented from entering the heating furnace, and the high temperature loss in the heating furnace can be prevented. Conversely, when unloading materials in the heating furnace, they can also be transitioned through the transition furnace.

[0004] However, currently, in order to transport materials from the transition furnace to the heating furnace, a material conveying mechanism is often required in the transition furnace. Since the filtering furnace is a high-temperature environment, the setting environment of the material conveying mechanism is poor, and the material conveying mechanism has high requirements for high temperature resistance, which leads to high costs of the material conveying mechanism. Therefore, it is necessary to provide a material conveying mechanism arranged on the outside of the furnace body, which can push or pull the material in the furnace body. Utility Model Content

[0005] The technical problem to be solved by the utility model is to provide a furnace material moving device and a furnace system which are arranged outside the furnace body and push or pull the materials in the furnace body.

[0006] The utility model provides a material moving device for a furnace body, comprising a mounting frame, a furnace door mechanism and a material driving mechanism;

[0007] The furnace door mechanism includes a linear drive mechanism I arranged on a mounting frame and a furnace door arranged on an output end of the linear drive mechanism I;

[0008] The material driving mechanism comprises a linear driving mechanism II arranged on a mounting frame and a push-pull rod arranged on an output end of the linear driving mechanism II;

[0009] A sliding hole is arranged on the furnace door, and the other end of the push-pull rod passes through the sliding hole and extends into the inner side of the furnace door, and the moving directions of the linear drive mechanism I and the linear drive mechanism II are parallel.

[0010] Furthermore, a push-pull head is provided at one end of the push-pull rod located on the inner side of the furnace door;

[0011] The push-pull head is used for detachable connection with the material in the furnace body.

[0012] Furthermore, the push-pull head includes an abutment plate, an engaging plate and an engaging drive mechanism;

[0013] The abutment plate is arranged at the end of the push-pull rod;

[0014] The interlocking driving mechanism is arranged on the abutting plate or the push-pull rod, and the interlocking plate is arranged at the output end of the interlocking driving mechanism.

[0015] Furthermore, the chimeric drive mechanism includes a mounting plate, a sliding plate, a linear drive mechanism III and a plurality of guide rods;

[0016] One end of a plurality of guide rods is fixed to the end surface of the abutment plate, and the other end is fixed to the mounting plate;

[0017] The sliding plate is arranged between the abutting plate and the mounting plate, and is slidably matched with a plurality of guide rods;

[0018] The linear drive mechanism III is used to drive the sliding plate to slide;

[0019] The engaging plate is fixed on the sliding plate.

[0020] Furthermore, the linear drive mechanism III includes a rack, a gear, a rotation drive rod and a rotation drive mechanism;

[0021] The rack is arranged on the sliding plate, the gear is arranged on the abutting plate, the gear is meshed with the rack, the rotary drive mechanism is arranged on the output end of the linear drive mechanism II, one end of the rotary drive rod cooperates with the gear, and the other end passes through the sliding hole and is connected to the output end of the rotary drive mechanism.

[0022] Furthermore, two push-pull rods are provided, and the rotary drive rod is provided between the two push-pull rods.

[0023] Furthermore, the push-pull rod is in sliding sealing cooperation with the sliding hole.

[0024] Furthermore, the furnace door mechanism also includes a mounting platform arranged on the mounting frame, the linear drive mechanism I is arranged at the upper end of the mounting platform, and the linear drive mechanism II is arranged at the lower end of the mounting platform.

[0025] Furthermore, the material moving device for the furnace body further comprises a bracket, and the mounting frame is movably arranged on the bracket;

[0026] The moving direction of the mounting bracket is parallel to the plane of the furnace opening of the furnace body.

[0027] The utility model also provides a furnace system, comprising a furnace and a material moving device for the furnace.

[0028] The beneficial effects of the utility model are:

[0029] Firstly, the material can be pushed and pulled in the furnace body while the furnace body is sealed, and the sealing effect of the furnace body is always ensured, thereby avoiding high temperature loss or vacuum reduction in the furnace body and saving energy.

[0030] Secondly, the coordination between the push-pull rod and the furnace door not only improves the structural stability of the push-pull rod in all states, but also ensures the sealing of the furnace door, while realizing that the material can be pushed out from the other end of the furnace body or pulled in from the other end of the furnace body when the furnace door is in the closed state. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Attached Figure 1 This is a schematic diagram of the first angle structure of the material moving device for the furnace body in the utility model;

[0032] Attached Figure 2 For attachment Figure 1 A partial enlarged view of the middle A;

[0033] Attached Figure 3 For attachment Figure 2 A partial enlarged view of point B in the middle;

[0034] Attached Figure 4 For attachment Figure 2 A front cross-sectional view of

[0035] Attached Figure 5 For attachment Figure 4 A partial enlarged view of point C in the middle;

[0036] Attached Figure 6 This is a second angle structural schematic diagram of the material moving device for the furnace body in the utility model.

[0037] In the figure, 1-bracket; 2-mounting frame; 4-furnace door mechanism; 41-linear drive mechanism I; 42-furnace door; 421-sliding hole; 43-mounting table; 44-furnace door moving plate; 45-guide rail slider assembly; 5-material drive mechanism; 51-linear drive mechanism II; 511-module mounting seat; 52-push-pull rod; 53-push-pull head; 531-abutment plate; 532-embedded plate; 533-embedded drive mechanism; 5331-mounting plate; 5332-sliding plate; 5333-linear drive mechanism III; 53331-rack; 53332-gear; 53333-rotational drive rod; 53334-rotational drive mechanism; 5334-guide rod; 7-material; 71-matching groove; 8-furnace body; 81-furnace mouth. DETAILED DESCRIPTION

[0038] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0039] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back...) are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0040] In the present invention, unless otherwise clearly defined and specified, the terms "connection", "fixation", etc. should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; it can mean direct connection, indirect connection through an intermediate medium, internal connection between two elements, or interaction between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In addition, the technical solutions between the various embodiments of the present invention can be combined with each other, but it must be based on the fact that ordinary technicians in the field can implement it. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0042] As attached Figure 1 -Attached Figure 6 As shown, the utility model provides a material moving device for a furnace body, comprising a mounting frame 2, a furnace door mechanism 4 and a material driving mechanism 5, wherein the furnace door mechanism 4 and the material driving mechanism 5 are both arranged on the mounting frame 2;

[0043] The furnace door mechanism 4 includes a linear drive mechanism I41 disposed on the mounting frame 2 and a furnace door 42 disposed on the output end of the linear drive mechanism I41, that is, the linear drive mechanism I41 can drive the furnace door 42 to move linearly on the basis of the mounting frame 2, thereby opening or closing the furnace opening 81 of the furnace body 8;

[0044] The material driving mechanism 5 includes a linear driving mechanism II51 disposed on the mounting frame 2 and a push-pull rod 52 disposed on the output end of the linear driving mechanism II51, that is, the linear driving mechanism II51 can drive the push-pull rod 52 to move linearly on the basis of the mounting frame 2;

[0045] A sliding hole 421 is provided on the furnace door 42, and the other end of the push-pull rod 52 passes through the sliding hole 421 and extends into the inner side of the furnace door 42. The push-pull rod 52 can push or pull the inner side of the furnace door 42, that is, the material 7 inside the furnace cavity of the furnace body 8, and the moving directions of the linear drive mechanism I41 and the linear drive mechanism II51 are parallel, that is, the opening and closing movement of the furnace door 42 does not affect the movement of the push-pull rod 52. Conversely, the movement of the push-pull rod 52 is also not restricted by the furnace door 42.

[0046] The material moving device for the furnace body provided by the utility model can push or pull the material 7 in the furnace body 8 without being restricted by the opening and closing of the furnace door 42. When the furnace door 42 is closed, the push-pull rod 52 can be used to pull the material 7 at the far end of the furnace cavity of the furnace body 8 to the furnace mouth 81, or to push the material 7 at the furnace mouth 81 to the far end of the furnace cavity of the furnace body 8. At this time, the furnace door 42 is fixed and cooperates with the furnace body 8. The push-pull rod 52 slides along the sliding hole 421 under the drive of the linear drive mechanism II 51. The end of the push-pull rod 52 abuts or connects with the material 7, the middle is slidably connected with the sliding hole 421, and the other end is fixedly connected with the output end of the linear drive mechanism II 51. Among them, the far end of the furnace cavity of the furnace body 8 can be another furnace mouth 81, which can be connected to another furnace body for use, and a furnace door can be set between the two furnace bodies, for example, the furnace body 8 is a transition furnace connected to the heating furnace. When the furnace door 42 needs to be opened, the push-pull rod 52 can be fixed or moved synchronously with the furnace door 42. That is, when the furnace door 42 is in an open state, the push-pull rod 52 may not be operated, or the material 7 at the furnace mouth 81 may be pulled out of the furnace body 8 (the output stroke of the linear drive mechanism II 51 is away from the furnace mouth 81), and the material 7 may be taken out of the furnace in combination with, for example, lifting equipment.

[0047] The present invention has the following beneficial effects through the above arrangement:

[0048] Firstly, the material 7 can be pushed and pulled in the furnace body 8 while the furnace body 8 is sealed, and the sealing effect of the furnace body 8 is always ensured, thereby avoiding high temperature loss or vacuum reduction in the furnace body 8 and saving energy.

[0049] Secondly, the push-pull rod 52 and the sliding hole 421 on the furnace door 42 are slidably matched. On the one hand, the push-pull rod 52 and the furnace door 42 can be moved synchronously to maintain the relative position of the two. On the other hand, the sliding hole 421 can also serve as the intermediate support structure of the push-pull rod 52, so that the push-pull rod 52, which was originally a cantilever structure, becomes a two-point support structure. During the push-pull operation, it is changed to a three-point support structure in which the end of the push-pull rod 52 is connected to the material 7, the middle is slidably connected to the sliding hole 421, and the other end is fixedly connected to the output end of the linear drive mechanism II51. In the initial state, one end of the push-pull rod 52 is matched with the sliding hole 421, and the other end is fixedly connected to the output end of the linear drive mechanism II51, thereby improving the structural stability of the push-pull rod 52 in all states, that is, the furnace door 42 is not only used as a furnace door, but also used as a support and guide structure for the push-pull rod 52. In addition, the push-pull rod 52 can also serve as a supplement to the sliding hole 421 to ensure the sealing of the furnace door 42, ensure the sealing effect of the furnace door 42, and realize the pushing out of the material 4 when the furnace door 42 is in a closed state. The cooperation relationship between the push-pull rod 52 and the furnace door 42 improves the structural stability of the push-pull rod 52 in all states and ensures the sealing of the furnace door 42, while realizing that the material 7 can be pushed out from the other end of the furnace body 8 or pulled in from the other end of the furnace body 8 when the furnace door 42 is in a closed state.

[0050] In one embodiment, a push-pull head 53 is provided at one end of the push-pull rod 52 located on the inner side of the furnace door 42; the push-pull head 53 is used to be detachably connected with the material 7 in the furnace body 8, so that the material 7 in the furnace body 8 can be pushed and pulled during the movement of the push-pull rod 52. During the pushing process, the push-pull head 53 only needs to abut against the material 7 to push the material 7 to move. During the pulling process, the push-pull head 53 needs to be connected with the material 7, and specifically, the push-pull head 53 can be embedded, clamped or clamped with the material 7.

[0051] In one embodiment, the push-pull head 53 includes an abutment plate 531, an interlocking plate 532 and an interlocking driving mechanism 533, wherein the abutment plate 531 is directly fixed to the end of the push-pull rod 52, so that the abutment plate 531 can be moved by the linear driving mechanism II51, thereby pushing the material 7 to move.

[0052] The interlocking driving mechanism 533 is arranged on the abutment plate 531 or the push-pull rod 52, and the interlocking plate 532 is arranged at the output end of the interlocking driving mechanism 533. The interlocking driving mechanism 533 can drive the interlocking plate 532 to engage with the corresponding matching groove 71 on the material 7, so that the interlocking plate 532 can be moved by the drive of the linear driving mechanism II51, and then pull the material 7 to move.

[0053] In this embodiment, the abutment plate 531 is used to push the material 7, corresponding to pushing the material 7 at the furnace mouth 81 of the furnace body 8 toward the far end of the furnace cavity, and the interlocking plate 532 is used to pull the material 7, corresponding to pulling the material 7 at the far end of the furnace cavity of the furnace body 8 toward the furnace mouth 81. It should be noted that when the abutment plate 531 pushes the material 7, the interlocking plate 532 does not need to cooperate with the matching groove 71 of the material 7, and when the interlocking plate 532 pulls the material 7, the interlocking plate 532 does not need to abut against the side of the material 7. Preferably, the matching groove 71 is a rectangular groove, and the interlocking plate 532 is a rectangular block, so that the interlocking plate 532 and the matching groove 71 are matched, which is also suitable for pushing the material 7.

[0054] In one preferred embodiment, when the engaging drive mechanism 533 drives the engaging plate 532 to engage with the matching groove 71 of the material 7, the abutting plate 531 abuts against the side wall of the material 7. At this time, the abutting plate 531 and the engaging plate 532 can clamp the material 7, thereby achieving double fixation of the material 7. When the material 7 is heavy and the material carrying platform 31 is a smooth sliding plane, inertial sliding can be effectively avoided during the pushing and pulling process of the material 7, thereby improving the pushing stability.

[0055] In one embodiment, the interlocking drive mechanism 533 includes a mounting plate 5331, a sliding plate 5332, a linear drive mechanism III 5333 and a plurality of guide rods 5334; one end of the plurality of guide rods 5334 is fixed to the end surface of the abutment plate 531, and the other end is fixed to the mounting plate 5331. Preferably, the mounting plate 5331, the sliding plate 5332 and the abutment plate 531 are parallel to each other; the sliding plate 5332 is arranged between the abutment plate 531 and the mounting plate 5331, and is slidably matched with the plurality of guide rods 5334; the linear drive mechanism III 5333 is used to drive the sliding plate 5332 to slide; the interlocking plate 532 is fixed to the outer side of the sliding plate 5332. Preferably, the interlocking plate 532 is perpendicular to the sliding plate 5332 and the abutment plate 531, so that the abutment surface of the abutment plate 531 and the side surface of the interlocking plate 532 are arranged relative to each other, so as to achieve the clamping of the material 7.

[0056] In one embodiment, the linear drive mechanism III 5333 includes a rack 53331 , a gear 53332 , a rotation drive rod 53333 and a rotation drive mechanism 53334 ;

[0057] The rack 53331 is arranged on the sliding plate 5332, the gear 53332 is arranged on the abutting plate 531, the gear 53332 is meshed with the rack 53331, the rotation drive mechanism 53334 is arranged on the output end of the linear drive mechanism II51, one end of the rotation drive rod 53333 is matched with the gear 53332, and the other end passes through the sliding hole 421 and is connected with the output end of the rotation drive mechanism 53334, and the rotation drive rod 53333 is rotationally matched with the abutting plate 531. In this embodiment, the rotation drive mechanism 53334 driving the sliding plate 5332 is arranged at the output end of the linear drive mechanism II51, located outside the furnace body 8, away from the harsh environment in the furnace body 8, and improves the stability of use. In this embodiment, the gear rack can also adopt a transmission mode such as chain drive or worm gear, which is selected according to actual needs.

[0058] In one embodiment, two push-pull rods 52 are provided to improve the structural stability and the connection strength with the abutment plate 531. The rotation drive rod 53333 is provided between the two push-pull rods 52. The two push-pull rods 52 can provide physical protection for the rotation drive rod 53333 to prevent foreign matter from affecting the rotation of the rotation drive rod 53333. In this embodiment, three sliding holes 421 are provided, corresponding to two push-pull rods 52 and one rotation drive rod 53333, respectively.

[0059] In one embodiment, the push-pull rod 52 is in sliding and sealing cooperation with the sliding hole 421 . Preferably, the rotary drive rod 53333 is in rotational and sliding and sealing cooperation with the sliding hole 421 , thereby improving the sealing effect of the furnace door 42 .

[0060] In one embodiment, the furnace door mechanism 4 further includes a mounting platform 43 arranged on the mounting frame 2, the linear drive mechanism I 41 is arranged at the upper end of the mounting platform 43, and the linear drive mechanism II 51 is arranged below the mounting platform 43. In this embodiment, the push-pull rod 52 passes through the mounting platform 43 and slides with the sliding hole 421. On the one hand, the space is reasonably arranged. More importantly, the push-pull rod 52 can easily connect the lower part of the material 7, improve the push-pull effect of the material 7, and can adapt to the push-pull of the material 7 with a relatively low height. Preferably, a furnace door moving plate 44 is also arranged between the furnace door 42 and the output end of the linear drive mechanism I 41. The furnace door moving plate 44 is arranged on the mounting platform 43 through the guide rail slider assembly 45, so as to improve the moving stability of the furnace door 42 and reduce the burden of the linear drive mechanism I 41. Preferably, the linear drive mechanism I 41 adopts a cylinder, the cylinder body of the cylinder is fixed on the mounting platform 43, and the piston is fixed on the furnace door moving plate 44. Preferably, the linear drive mechanism II 51 is a linear module, which can reasonably utilize the space and ensure the driving distance. Preferably, a module mounting seat 511 is provided on the output slider of the linear module, and the module mounting seat 511 is used to fix the push-pull rod 52 and the rotation drive mechanism 53334.

[0061] In one of the embodiments, the material moving device for the furnace body also includes a bracket 1, and a mounting frame 2 is movably arranged on the bracket 1, so that the mounting frame 2 can drive the furnace door mechanism 4 and the material driving mechanism 5 to move away from the furnace body 8; the moving direction of the mounting frame 2 is parallel to the plane of the furnace mouth 81 of the furnace body 8, so that the furnace door mechanism 4 and the material driving mechanism 5 can be longitudinally moved away from the furnace body 8, thereby completely exposing the furnace mouth 81 of the furnace body 8, so that the material 7 can be loaded and unloaded through the furnace mouth 81.

[0062] The utility model also provides a furnace system, including a furnace body 8 and the above-mentioned material moving device for the furnace body, wherein the furnace body 8 can have only one furnace opening 81, and the furnace opening 81 corresponds to the furnace door 42, and the furnace body 8 can also have two opposite furnace openings 81, one furnace opening 81 corresponds to the furnace door 42, and the other furnace opening 81 is separately equipped with a furnace door or connected to other furnace bodies.

[0063] The above is only an embodiment and does not limit the present invention in any way. Any person skilled in the art can make many possible changes, modifications or modifications to the present invention without departing from the scope of the present invention by using the above disclosed technical contents. Therefore, any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present invention without departing from the content of the present invention should fall within the scope of protection of the present invention.

Claims

1. A material moving device for a furnace, characterized in that: It comprises a mounting frame (2), a furnace door mechanism (4) and a material driving mechanism (5); The furnace door mechanism (4) comprises a linear drive mechanism I (41) arranged on a mounting frame (2) and a furnace door (42) arranged on an output end of the linear drive mechanism I (41); The material driving mechanism (5) comprises a linear driving mechanism II (51) arranged on the mounting frame (2) and a push-pull rod (52) arranged on the output end of the linear driving mechanism II (51); The furnace door (42) is provided with a sliding hole (421), the other end of the push-pull rod (52) passes through the sliding hole (421) and extends into the inner side of the furnace door (42), and the moving directions of the linear drive mechanism I (41) and the linear drive mechanism II (51) are parallel.

2. The material moving device for a furnace as claimed in claim 1, characterized in that: The push-pull rod (52) is provided with a push-pull head (53) at one end of the inner side of the furnace door (42); The push-pull head (53) is used to be detachably connected to the material (7) in the furnace body (8).

3. The material moving device for a furnace as claimed in claim 2, characterized in that: The push-pull head (53) comprises an abutment plate (531), an interlocking plate (532) and an interlocking driving mechanism (533); The abutment plate (531) is arranged at the end of the push-pull rod (52); The interlocking drive mechanism (533) is arranged on the abutment plate (531) or the push-pull rod (52), and the interlocking plate (532) is arranged at the output end of the interlocking drive mechanism (533).

4. The material moving device for a furnace as claimed in claim 3, characterized in that: The interlocking driving mechanism (533) comprises a mounting plate (5331), a sliding plate (5332), a linear driving mechanism III (5333) and a plurality of guide rods (5334); One end of a plurality of guide rods (5334) is fixed to the end surface of the abutment plate (531), and the other end is fixed to the mounting plate (5331); The sliding plate (5332) is arranged between the abutting plate (531) and the mounting plate (5331), and is slidably matched with a plurality of the guide rods (5334); The linear drive mechanism III (5333) is used to drive the sliding plate (5332) to slide; The engaging plate (532) is fixed on the sliding plate (5332).

5. The material moving device for a furnace as claimed in claim 4, characterized in that: The linear drive mechanism III (5333) comprises a rack (53331), a gear (53332), a rotation drive rod (53333) and a rotation drive mechanism (53334); The rack (53331) is arranged on the sliding plate (5332), the gear (53332) is arranged on the abutment plate (531), the gear (53332) is meshed with the rack (53331), the rotation drive mechanism (53334) is arranged on the output end of the linear drive mechanism II (51), one end of the rotation drive rod (53333) cooperates with the gear (53332), and the other end passes through the sliding hole (421) and is connected to the output end of the rotation drive mechanism (53334).

6. The material moving device for a furnace as claimed in claim 5, characterized in that: Two push-pull rods (52) are provided, and the rotation driving rod (53333) is provided between the two push-pull rods (52).

7. The material moving device for a furnace as claimed in any one of claims 1 to 6, characterized in that: The push-pull rod (52) and the sliding hole (421) are in sliding sealing cooperation.

8. The material moving device for a furnace as claimed in any one of claims 1 to 6, characterized in that: The furnace door mechanism (4) further comprises a mounting platform (43) arranged on the mounting frame (2), the linear drive mechanism I (41) being arranged at the upper end of the mounting platform (43), and the linear drive mechanism II (51) being arranged below the mounting platform (43).

9. The material moving device for a furnace as claimed in any one of claims 1 to 6, characterized in that: It also comprises a bracket (1), and the mounting frame (2) is movably arranged on the bracket (1); The moving direction of the mounting frame (2) is parallel to the plane of the furnace opening (81) of the furnace body (8).

10. A furnace system, characterized in that: It comprises a furnace body (8) and a material moving device for the furnace body as claimed in any one of claims 1 to 9.

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