Heat preservation module for kiln and kiln thereof

Abstract

The utility model relates to a heat preservation module for a kiln and the kiln. The heat preservation module comprises a hollow module main body, the module body comprises a supporting frame in a regular shape and a heat preservation layer arranged along the inner side of the supporting frame, and the heat preservation layer is connected with the supporting frame through an anchorage device. The supporting frame is provided with a first linear groove; the module body is detachably connected with the kiln based on the first linear groove, and the module body is movably arranged in the kiln based on the first linear groove. The first linear groove is formed in the module body to achieve installation and movable arrangement of the module body, and the installation structure of the module body can be effectively simplified. Besides, the first linear groove can achieve the overall bearing effect in the mode that the side face or the bottom face of the first linear groove makes contact with the supporting structure, the installation flexibility is effectively improved, the structure and arrangement requirements of the supporting structure can be lowered, and the service life of the supporting structure is prolonged. And further, the influence of impurities, dust and the like in the kiln on disassembly, assembly and movable arrangement of the heat preservation module can be effectively overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of heat preservation of roller kilns and tunnel kilns, in particular to a heat preservation module for kilns. Background Art

[0002] A kiln is a device made of refractory materials for firing products. It is usually built with mullite bricks in the furnace wall, and then ceramic fiber boards and ceramic fiber wool of a certain thickness are installed in sequence to achieve the insulation effect. For example, Chinese patent application CN211575855U, entitled "A prefabricated tunnel roasting kiln body insulation structure", has a kiln body composed of an outer frame, a first wall layer, a second wall layer and a third wall layer; the outer frame is made of stainless steel, the third wall layer is made of mullite bricks, the second wall layer is made of concrete, and the first wall layer is made of bricks. It can be seen that although its insulation structure has good thermal insulation performance, this masonry insulation layer structure has a long construction time and low construction efficiency, and its overall structure is complex after molding, and its weight and volume are large, and it is difficult to install, maintain and replace. In particular, when replacing, workers need to enter the kiln for processing, which is very inconvenient to operate.

[0003] In addition, due to the large weight and volume of this masonry insulation structure, the kiln with this insulation structure occupies a large area, which seriously limits the installation and layout flexibility of the kiln. Moreover, this masonry insulation structure has high requirements for the supporting structure, and cannot be installed in a modular manner, resulting in low construction and maintenance efficiency. Utility Model Content

[0004] The utility model aims to provide a heat preservation module for a kiln and a kiln thereof, which solves the drawbacks of the heat preservation module being complicated in structure, heavy in weight, and difficult in installation, maintenance and replacement.

[0005] In order to achieve the above-mentioned utility model object, the utility model provides a heat preservation module for a kiln, which is arranged inside the kiln body and comprises: a hollow module body;

[0006] The module body includes: a support frame of a regular shape, an insulation layer arranged along the inner side of the support frame, and the insulation layer and the support frame are connected by anchors;

[0007] The support frame is provided with a first linear groove;

[0008] The module body is detachably connected to the kiln body based on the first linear groove, and the module body is movably arranged in the kiln body based on the first linear groove.

[0009] Furthermore, the first linear groove is arranged on the edge bearing beam of the support frame.

[0010] Furthermore, the first linear groove is located on the edge bearing beam at the bottom of the support frame, and the opening of the first linear groove is arranged downward.

[0011] Further, the support frame is a rectangular frame structure, which includes: a top rectangular frame, a bottom rectangular frame and a lateral rectangular frame;

[0012] The top rectangular box is located directly above the bottom rectangular box;

[0013] The top and bottom ends of the lateral rectangular frame are connected to the top rectangular frame and the bottom rectangular frame respectively, and two lateral rectangular frames are arranged opposite to each other;

[0014] The grid density of the top rectangular box is smaller than that of the bottom rectangular box.

[0015] Furthermore, the thermal insulation layer includes: a hard thermal insulation layer and a soft thermal insulation layer;

[0016] The hard insulation layer is provided with at least two layers, and the soft insulation layer is provided between two adjacent hard insulation layers;

[0017] The thickness of the hard insulation layer is 35mm to 95mm, and the thickness of the soft insulation layer is 150mm to 250mm.

[0018] Furthermore, the hard insulation layer is a ceramic fiber board or a ceramic fiber module;

[0019] The soft thermal insulation layer is ceramic fiber wool or ceramic fiber blanket.

[0020] The utility model also provides a kiln, comprising: a kiln body, the aforementioned heat preservation module for the heat preservation module of the kiln, and a bearing structure arranged inside the kiln body;

[0021] The bearing structure is arranged in the main body of the kiln;

[0022] The module body is supported on the bearing structure, and the module body is movably connected to the bearing structure through a first linear groove;

[0023] The top side of the bearing structure is located in the first linear groove and is in contact with the bottom of the first linear groove.

[0024] Further, the bearing structure is in sliding contact or rolling contact with the first linear groove;

[0025] If the bearing structure is in rolling contact with the first linear groove, the bearing structure comprises: a bottom support and a plurality of rollers disposed on the bottom support;

[0026] The bottom support is a linear structure, and its width is smaller than the width of the first linear groove.

[0027] Further, the bottom support includes: a support body;

[0028] The support body is provided with a second linear groove;

[0029] A plurality of rollers are arranged at equal intervals along the second linear groove, and the axles of the rollers are supported on two opposite side walls of the second linear groove.

[0030] Furthermore, a limiting groove is provided on the side wall of the second linear groove;

[0031] The limiting groove has an upward opening on the side wall of the second linear groove;

[0032] The wheel axle of the roller is detachably connected to the side wall of the second linear groove via the limiting groove.

[0033] According to a solution of the utility model, the thermal insulation module of the utility model adopts a frame structure to replace the brick structure of the traditional kiln, which has small size, light weight, low cost and convenient installation and maintenance.

[0034] According to a solution of the utility model, the heat preservation module of the utility model replaces the traditional kiln arch structure with a flat roof structure, so the height of the kiln can be reduced, so that the space can be more fully utilized and the volume can be more easily controlled.

[0035] According to a solution of the utility model, by providing a first linear groove on the module body to realize the installation and movable arrangement of the module body, the installation structure of the module body can be effectively simplified, and the reliability and convenience of the use of the module body can be improved. In addition, the first linear groove can realize the bearing function of the whole by contacting the supporting structure with its side or bottom surface, which not only effectively improves the flexibility of installation, but also helps to reduce the structural and layout requirements of the supporting structure, thereby effectively overcoming the influence of impurities, dust, etc. in the kiln on the disassembly and assembly and movable arrangement of the insulation module.

[0036] According to a scheme of the utility model, the supporting area of ​​the module body installed in the kiln can be effectively increased by setting the first linear groove, which is beneficial to ensuring the accurate and stable installation position of the module body. At the same time, the connection between the first linear groove and the supporting structure can make the overall force of the module body balanced, which is more beneficial to maintaining the long-term stability of the module body.

[0037] According to a solution of the utility model, by integrating the first linear groove on the edge bearing beam at the bottom of the support frame, the structural strength of the edge bearing beam can be effectively used to maintain the overall reliability of the first linear groove, thereby ensuring the overall structural strength of the support frame and simplifying the structure of the support frame. In addition, by setting the opening of the first linear groove downward, the first linear groove can be used to surround the support position, which can protect the support position on the one hand, and effectively prevent the entry of external impurities (such as particulate matter) and dust on the other hand, thereby ensuring the smooth movement, reliable and stable connection position.

[0038] According to a solution of the utility model, by setting the grid density of the top rectangular frame to be smaller than the grid density of the bottom rectangular frame, the structures of the top rectangular frame and the bottom rectangular frame are optimized separately, wherein the top rectangular frame adopts a smaller grid density which can effectively ensure the structural strength of the top rectangular frame and reduce the overall mass of the top rectangular frame, while the bottom rectangular frame maintains a larger grid density to achieve a high load-bearing capacity of the bottom rectangular frame and ensure the structural stability of the entire support frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 is a three-dimensional structural diagram schematically showing a heat preservation module according to an embodiment of the present utility model;

[0040] Figure 2 is a structural diagram schematically showing a first linear groove according to an embodiment of the utility model;

[0041] Figure 3 is a structural diagram schematically showing a top rectangular frame according to an embodiment of the utility model;

[0042] Figure 4 is a structural diagram schematically showing a bottom rectangular frame according to an embodiment of the utility model;

[0043] Figure 5 is a structural diagram schematically showing a lateral rectangular frame according to an embodiment of the utility model;

[0044] Figure 6 is a front view schematically showing a bearing structure according to an embodiment of the utility model;

[0045] Figure 7 It is a side view schematically showing a bearing structure according to an embodiment of the utility model. DETAILED DESCRIPTION

[0046] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the drawings required for the implementation are briefly introduced below. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0047] When describing the embodiments of the present invention, the orientation or positional relationship expressed by the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" are based on the orientation or positional relationship shown in the relevant drawings. They are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operate in a specific orientation. Therefore, the above terms cannot be understood as limiting the present invention.

[0048] The present invention will be described in detail below in conjunction with the accompanying drawings and specific implementation methods. The implementation methods cannot be described one by one here, but the implementation methods of the present invention are not therefore limited to the following implementation methods.

[0049] Combination Figure 1 and Figure 2 As shown, in a specific embodiment of the utility model, the insulation module for the kiln includes: a hollow module body 1; wherein the module body 1 includes: a support frame 11 of a regular shape, and an insulation layer 12 arranged along the inner side of the support frame 11. In this embodiment, the module body 1 is a rectangular structure as a whole, and it adopts a hollow structure with openings on the front and back sides to facilitate splicing and assembly in the kiln. Among them, the support frame 11 is the main supporting structure of the module body 1, which can facilitate the regular arrangement of the insulation layer 12 inside according to the overall shape of the support frame 11. In this embodiment, the support frame 11 is provided with a first linear groove 11a; the module body 1 is detachably connected to the kiln body based on the first linear groove 11a, and the module body 1 is movably arranged in the kiln body based on the first linear groove 11a.

[0050] In this embodiment, a plurality of first linear grooves 11a are symmetrically arranged on the support frame 11 to increase the support stability of the entire module body 1; wherein, the extension direction of the first linear groove 11a is consistent with the front and rear side directions of the module body 1 to ensure the consistency of the docking direction of the module body 1, and the extension length of the first linear groove 11a is consistent with the front and rear side lengths of the module body 1, which is beneficial to the movable arrangement and disassembly of the module body 1 in the kiln.

[0051] Through the above arrangement, by providing the first linear groove 11a on the module body 1 to realize the installation and movable arrangement of the module body 1, the installation structure of the module body 1 can be effectively simplified, and the reliability and convenience of the use of the module body 1 can be improved. In addition, the first linear groove 11a can realize the bearing function of the whole by contacting the supporting structure with its side or bottom surface, which not only effectively improves the flexibility of installation, but also helps to reduce the structural and layout requirements of the supporting structure, thereby effectively overcoming the influence of impurities, dust, etc. in the kiln on the disassembly and assembly and movable arrangement of the insulation module.

[0052] In addition, the first linear groove 11a can effectively increase the support area of ​​the module body 1 installed in the kiln body, which is beneficial to ensuring the accurate and stable installation position of the module body 1. At the same time, the connection between the first linear groove 11a and the supporting structure can make the overall force of the module body 1 balanced, which is more beneficial to maintaining the long-term stability of the module body 1.

[0053] Combination Figure 1 and Figure 2 As shown, according to an embodiment of the utility model, the first linear groove 11a is arranged on the edge bearing beam of the support frame 11. In this embodiment, the first linear groove 11a is located on the edge bearing beam at the bottom of the support frame 11, and the first linear groove 11a is arranged with its opening facing downward. In this embodiment, the first linear groove 11a is arranged as a rectangular groove, which realizes the supporting function through the bottom plane of the first linear groove 11a. Of course, the shape of the first linear groove 11a can be set as a trapezoidal groove, a triangular groove, etc. according to the design requirements.

[0054] Through the above arrangement, when the first linear groove 11a is integrated on the edge bearing beam at the bottom of the support frame 11, the structural strength of the edge bearing beam can be effectively utilized to maintain the overall reliability of the first linear groove 11a, thereby ensuring the overall structural strength of the support frame 11 and simplifying the structure of the support frame 11. In addition, by arranging the first linear groove 11a with the opening facing downward, the first linear groove 11a can be utilized to surround the support position, which can protect the support position on the one hand, and effectively prevent the entry of external impurities (such as particulate matter) on the other hand, thereby ensuring the smooth, reliable and stable movement of the connection position.

[0055] Of course, in another embodiment, the opening of the first linear groove 11a can also be toward the left and right sides of the support frame 11, and then the support structure can be set on the side wall of the kiln in the kiln to realize the suspended support of the module body 1. Through this arrangement, the problem of difficulty in installing the support structure at the bottom of the kiln can be effectively eliminated. In addition, the first linear groove 11a can also be set on the remaining edge bearing beams of the support frame 11 (for example, the edge bearing beams at the bottom), and its arrangement method is similar to the above method, which will not be repeated here.

[0056] Combination Figure 1 , Figure 3 , Figure 4 and Figure 5 As shown, according to an embodiment of the utility model, the support frame 11 is a rectangular frame structure, which includes: a top rectangular frame 111, a bottom rectangular frame 112 and a lateral rectangular frame 113. In this embodiment, the top rectangular frame 111 is located directly above the bottom rectangular frame 112; the upper and lower ends of the lateral rectangular frame 113 are respectively connected to the top rectangular frame 111 and the bottom rectangular frame 112, and two lateral rectangular frames 113 are arranged opposite to each other. In this embodiment, the grid density of the top rectangular frame 111 is less than the grid density of the bottom rectangular frame 112.

[0057] In this embodiment, the top rectangular frame 111 is welded by angle steel, wherein the angle steel is made of stainless steel. In this embodiment, the top rectangular frame 111 can be connected to the lateral rectangular frame 113 by threaded connection, welding, etc.

[0058] In this embodiment, the bottom rectangular frame 112 is welded by channel steel and angle steel, wherein the channel steel is used as the edge bearing beam of the edge of the bottom rectangular frame 112, and the angle steel is used to connect two opposite and parallel channel steels together; in this embodiment, the groove in the channel steel used in the bottom rectangular frame 112 can form the first linear groove 11a, which effectively reduces the processing difficulty of the bottom rectangular frame 112 and improves the production efficiency. The channel steel and angle steel used are both made of stainless steel;

[0059] In this embodiment, the lateral rectangular frame 113 is welded by angle steel and bent steel plate; wherein, the lateral rectangular frame 113 includes: a first horizontal support 1131, a second horizontal support 1132, a third horizontal support 1133 and a vertical support 1134. From top to bottom, the first horizontal support 1131, the second horizontal support 1132, and the third horizontal support 1133 are arranged parallel to each other and spaced in sequence. wherein, the first horizontal support 1131 is made of angle steel, and the second horizontal support 1132 and the third horizontal support 1133 are respectively made of bent steel plates, specifically, the second horizontal support 1132 is an overall rectangular structure, and its two side edges in the width direction are bent to the same side to form its overall structure. the third horizontal support 1133 is an overall rectangular structure, and its two side edges in the width direction are bent to the same side to form its overall structure. in this embodiment, the width of the second horizontal support 1132 is smaller than the width of the third horizontal support 1133.

[0060] In this embodiment, the vertical support 1132 is made of angle steel, which is respectively arranged between the first horizontal support 1131 and the second horizontal support 1132, and between the second horizontal support 1132 and the third horizontal support 1133; and the vertical support 1132 is used to connect the third horizontal support 1133 and the edge bearing beam of the bottom rectangular frame 112 to complete the connection between the lateral rectangular frame 113 and the bottom rectangular frame 112. In this embodiment, the angle steel and the bent steel plate used in the lateral rectangular frame 113 are made of stainless steel.

[0061] In this embodiment, the second horizontal support 1132 and the third horizontal support 1133 are also provided with first positioning and mounting holes, so that the furnace body transmission rollers, heating rods, etc. in the kiln can pass through the first positioning and mounting holes. In this embodiment, the insulation layer 12 is respectively provided with second positioning and mounting holes at positions corresponding to the second horizontal support 1132 and the third horizontal support 1133, which are also used for the furnace body transmission rollers and heating rods to pass through smoothly.

[0062] like Figure 1As shown, according to one embodiment of the utility model, the thermal insulation layer 12 includes: a hard thermal insulation layer and a soft thermal insulation layer; wherein the hard thermal insulation layer is provided with multiple layers, and the soft thermal insulation layer is provided between two adjacent hard thermal insulation layers; for example, the hard thermal insulation layer is provided with two layers, and the soft thermal insulation layer is located between the two hard thermal insulation layers, so as to present a sequential stacking relationship of the hard thermal insulation layer, the soft thermal insulation layer, and the hard thermal insulation layer. Through the above-mentioned arrangement, the thermal insulation layer is arranged as a stacking structure combining hard and soft, which can more conveniently arrange the structural composition of the thermal insulation layer, thereby being able to more conveniently achieve the corresponding thermal insulation requirements. In addition, through the stacking structure of the soft and hard structures, the structure of the thermal insulation layer can be better matched with the shape of the support frame 11. In this embodiment, the thermal insulation layer 12 is connected to the support frame 11 by a stainless steel anchor.

[0063] In this embodiment, the thickness of the hard insulation layer is 35 mm to 95 mm, and the thickness of the soft insulation layer is 150 mm to 250 mm. By setting the hard insulation layer and the soft insulation layer in the above ranges, the structure of the entire insulation layer 12 is more reasonable, so that it can better reflect the advantages brought by the stacking structure of the soft and hard structures, and can help reduce the overall mass of the insulation layer 12 while ensuring the overall insulation performance of the insulation layer 12.

[0064] like Figure 1 As shown, according to one embodiment of the present invention, the hard insulation layer can be formed by splicing ceramic fiber boards or ceramic fiber modules together; the soft insulation layer can be formed by laying ceramic fiber cotton or ceramic fiber blanket.

[0065] Combination Figure 1 , Figure 6 and Figure 7 As shown, the utility model also provides a kiln, including: a kiln body, a heat preservation module and a bearing structure 2. In this embodiment, the kiln body has a cavity for installing and arranging the heat preservation module and the supporting structure 2; wherein the bearing structure 2 is arranged in the cavity of the kiln body to support the module body 1; wherein the module body 1 is detachably supported on the bearing structure 2, and the module body 1 is movably connected to the bearing structure 2 through the first linear groove 11a. In this embodiment, the upper side of the bearing structure 2 is in the first linear groove 11a, and is in contact with the bottom of the first linear groove 11a.

[0066] Combination Figure 1 , Figure 6 and Figure 7As shown, according to one embodiment of the utility model, the bearing structure 2 is in sliding contact or rolling contact with the first linear groove 11a. In this embodiment, the bearing structure 2 is a linear supporting structure, which is used to provide a stable guide for the assembly and disassembly and active arrangement of the module body 1. If the bearing structure 2 is in rolling contact with the first linear groove 11a, the bearing structure 2 includes: a bottom support 21 and a plurality of rollers 22 arranged on the bottom support 21; wherein the bottom support 21 is a linear structure, and its width is less than the width of the first linear groove 11a. In this embodiment, the arrangement heights of the plurality of rollers 22 on the bottom support 21 are consistent, and the upper ends of the rollers 22 protrude from the bottom support 21 to achieve rolling contact with the bottom of the first linear groove 11a. In this embodiment, when the first linear groove 11a is a rectangular groove or a trapezoidal groove, the bottom of the first linear groove 11a is a plane, and then the annular outer surface of the roller 22 can also be set as an annular plane to achieve its stable support function. When the first linear groove 11a is a triangular groove, the annular outer surface of the roller 22 is set to a triangular annular surface matching it, so as to achieve a stable support function while having a self-positioning effect, so as to further ensure the accurate and constant movement direction of the module body 1.

[0067] Through the above configuration, by setting the width of the bottom support 21 to be smaller than the first linear groove 11a, the first linear groove 11a can better surround the bearing structure 2, thereby being more beneficial to protecting the bearing structure 2 and reducing the intrusion of external impurities.

[0068] Through the above arrangement, by adopting the rolling contact between the roller 22 and the first linear groove 11a, the friction force at the connection position can be effectively reduced, and the smoothness of the assembly and removal and the movable arrangement of the module body 1 is improved.

[0069] Combination Figure 1 , Figure 6 and Figure 7 As shown, according to an embodiment of the present invention, the bottom support 21 comprises: a support body 211; wherein the support body 211 is provided with a second linear groove 211a. In this embodiment, a plurality of rollers 22 are arranged at equal intervals along the second linear groove 211a, and the axles of the rollers 22 are supported on two opposite side walls of the second linear groove 211a.

[0070] In this embodiment, the side wall of the second linear groove 211a is provided with a limiting groove 211a1; wherein the limiting groove 211a1 is a U-shaped groove, the bottom of which is semicircular, and the upper end of which forms an upward opening on the side wall of the second linear groove 211a. In this embodiment, the axle of the roller 22 is detachably connected to the side wall of the second linear groove 211a through the limiting groove 211a1; specifically, the width of the limiting groove 211a1 is matched with the axle of the roller 22, and then the axle of the roller 22 can enter the limiting groove 211a1 through the upper opening of the limiting groove 211a1 and abut against the bottom of the limiting groove 211a1.

[0071] Through the above arrangement, the difficulty of installing the roller 22 is effectively simplified, and the disassembly, assembly and maintenance of the roller 22 can be conveniently achieved.

[0072] The above contents are merely examples of specific solutions of the present invention. For the equipment and structures not described in detail, it should be understood that they are implemented by adopting the general equipment and general methods available in the art.

[0073] The above is only one solution of the utility model and is not intended to limit the utility model. For those skilled in the art, the utility model can be modified and varied in various ways. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A heat preservation module for a kiln, arranged inside a kiln body, characterized in that: include: A hollow module body (1); The module body (1) comprises: a support frame (11) of regular shape, and a heat-insulating layer (12) arranged along the inner side of the support frame (11), wherein the heat-insulating layer (12) and the support frame (11) are connected by anchors; The support frame (11) is provided with a first linear groove (11a); The module body (1) is detachably connected to the kiln body based on the first linear groove (11a), and the module body (1) is movably arranged in the kiln body based on the first linear groove (11a).

2. The heat preservation module for a kiln according to claim 1, characterized in that: The first linear groove (11a) is arranged on an edge bearing beam of the support frame (11).

3. The heat preservation module for a kiln according to claim 2, characterized in that: The first linear groove (11a) is located on the edge bearing beam at the bottom of the support frame (11), and the opening of the first linear groove (11a) is arranged to face downward.

4. The heat preservation module for a kiln according to claim 3, characterized in that: The support frame (11) is a rectangular frame structure, comprising: a top rectangular frame (111), a bottom rectangular frame (112) and a lateral rectangular frame (113); The top rectangular frame (111) is located directly above the bottom rectangular frame (112); The top and bottom ends of the lateral rectangular frame (113) are respectively connected to the top rectangular frame (111) and the bottom rectangular frame (112), and the two lateral rectangular frames (113) are arranged opposite to each other.

5. The heat preservation module for a kiln according to claim 4, characterized in that: The thermal insulation layer (12) comprises: a hard thermal insulation layer and a soft thermal insulation layer; The hard thermal insulation layer is provided with at least two layers, and the soft thermal insulation layer is provided between two adjacent layers of the hard thermal insulation layer; The thickness of the hard insulation layer is 35 mm to 95 mm, and the thickness of the soft insulation layer is 150 mm to 250 mm.

6. The heat preservation module for a kiln according to claim 5, characterized in that: The hard insulation layer is a ceramic fiber board or a ceramic fiber module; The soft thermal insulation layer is ceramic fiber cotton or ceramic fiber blanket.

7. A kiln, comprising a kiln body and the heat preservation module for a kiln according to any one of claims 1 to 6, characterized in that: It also includes a bearing structure (2) arranged inside the kiln body; The module body (1) is supported on the bearing structure (2), and the module body (1) is movably connected to the bearing structure (2) via the first linear groove (11a); The top side of the bearing structure (2) is located in the first linear groove (11a) and is in contact with the bottom of the first linear groove (11a).

8. The kiln according to claim 7, characterized in that: The bearing structure (2) is in sliding contact or rolling contact with the first linear groove (11a); If the bearing structure (2) is in rolling contact with the first linear groove (11a), the bearing structure (2) comprises: a bottom support (21) and a plurality of rollers (22) arranged on the bottom support (21); The bottom support (21) is a linear structure, and its width is smaller than the width of the first linear groove (11a).

9. The kiln according to claim 8, characterized in that The bottom support (21) comprises: a support body (211); The supporting body (211) is provided with a second linear groove (211a); A plurality of rollers (22) are arranged at equal intervals along the second linear groove (211a), and the axles of the rollers (22) are supported on two opposite side walls of the second linear groove (211a).

10. The kiln according to claim 9, characterized in that A limiting groove (211a1) is provided on the side wall of the second linear groove (211a); The limiting groove (211a1) has an upward opening on the side wall of the second linear groove (211a); The axle of the roller (22) is detachably connected to the side wall of the second linear groove (211a) via the limiting groove (211a1).

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