Roller kiln

Abstract

The invention discloses a roller kiln, and relates to the technical field of kilns. The roller kiln comprises a supporting frame, a first furnace body, a second furnace body and a first partition plate. The first furnace body and the second furnace body are sequentially arranged from top to bottom and both installed in the supporting frame, the width directions of the first furnace body and the second furnace body are the same, the width of the first furnace body is larger than that of the second furnace body, a first opening is formed in the top of the second furnace body, and the first partition plate is connected into the first opening. The first furnace body is arranged outside the first opening in a covering mode, a first receding gap is formed between the first furnace body and the second furnace body, and the first receding gap is used for receding the heating expansion amount of the first furnace body and / or the second furnace body. According to the roller kiln provided by the invention, split arrangement of the first furnace body and the second furnace body can be realized under the condition that the structural strength is ensured, the furnace body tension crack caused by thermal expansion and cold contraction is avoided, the thermal insulation performance is improved, the production of products with different sizes can be realized, and the universality is better.

Description

Technical Field

[0001] This invention relates to the field of kiln technology, and more specifically, to a roller kiln. Background Technology

[0002] Roller kilns are continuous high-temperature sintering equipment widely used in industries such as ceramics, glass, metallurgy, and chemicals. Their core feature is the continuous feeding and unloading of materials via a roller conveyor system, combined with a high-temperature heating system to complete sintering, calcination, or heat treatment processes. Roller kilns were developed to improve production efficiency. Currently, roller kilns are typically integrated units. While this improves structural strength, the different heating temperatures of the two furnace chambers lead to varying degrees of thermal expansion and contraction, potentially causing cracks in the furnace body and affecting overall insulation performance. Furthermore, the uniform width of the two furnace chambers in current roller kilns results in limited product dimensional versatility.

[0003] Therefore, designing and manufacturing a reliable, durable, and versatile roller kiln is of particular importance, especially in kiln production. Summary of the Invention

[0004] The purpose of this invention is to provide a roller kiln that can separate the first and second kiln bodies while ensuring structural strength, thereby avoiding kiln body cracking caused by thermal expansion and contraction, improving heat preservation performance, and enabling the production of products of different sizes, thus having good versatility.

[0005] The present invention is achieved by the following technical solution.

[0006] A roller kiln includes a support frame, a first furnace body, a second furnace body, and a first partition. The first furnace body and the second furnace body are arranged sequentially from top to bottom and are both installed within the support frame. The width of the first furnace body and the second furnace body are in the same direction, and the width of the first furnace body is greater than the width of the second furnace body. The top of the second furnace body is provided with a first opening. The first partition is connected to the first opening. The first furnace body is covered outside the first opening and forms a first clearance gap with the second furnace body. The first clearance gap is used to accommodate the thermal expansion of the first furnace body and / or the second furnace body.

[0007] Optionally, the first furnace body includes a first sidewall and a second sidewall disposed opposite to each other, the support frame includes a first bearing portion and a second bearing portion disposed opposite to each other, the second furnace body is disposed between the first bearing portion and the second bearing portion, the first bearing portion is disposed below the first sidewall and is used to support the first sidewall, and the second bearing portion is disposed below the second sidewall and is used to support the second sidewall.

[0008] Optionally, the first supporting part includes a first crossbeam and a first column that are perpendicular to each other. The first crossbeam is connected to the first column and is connected to the bottom of the first side wall. The first column is connected to the outside of the second furnace body. The second supporting part includes a second crossbeam and a second column that are perpendicular to each other. The second crossbeam is connected to the second column and is connected to the bottom of the second side wall. The second column is connected to the outside of the second furnace body. And / or, the bottom end of the first sidewall extends inward along the width direction of the first furnace body to form a first bottom wall section, the bottom end of the second sidewall extends inward along the width direction of the first furnace body to form a second bottom wall section, and the second furnace body is disposed between the first bottom wall section and the second bottom wall section; And / or, the number of first clearance gaps is two, the second furnace body includes a third side wall and a fourth side wall arranged opposite to each other, a first opening is provided between the third side wall and the fourth side wall, one first clearance gap is provided between the third side wall and the first side wall, and the other first clearance gap is provided between the fourth side wall and the second side wall.

[0009] Optionally, the support frame includes multiple outer frames and multiple connecting rods. The multiple outer frames are arranged parallel to each other along the length of the roller kiln, and the multiple connecting rods are arranged parallel to each other and extend along the length of the roller kiln. The multiple outer frames are connected by multiple connecting rods. The outer frames are simultaneously enclosed by the first kiln body and the second kiln body, and are simultaneously connected to the first kiln body and the second kiln body.

[0010] Optionally, the outer frame includes a top rod and a bottom rod arranged opposite to each other. The first furnace body is provided with a top wall, and the second furnace body is provided with a bottom wall. The top rod is located above the top wall and connected to the top wall, and the bottom rod is located below the bottom wall and connected to the bottom wall.

[0011] Optionally, the support frame also includes multiple hanging rods, which are arranged in parallel at intervals and all extend along the length of the roller kiln. The multiple hanging rods are simultaneously connected to the top rods of multiple outer frames. The top wall consists of multiple hanging bricks arranged in a rectangular array. Adjacent hanging bricks are glued together, and hooks are installed on the top of the hanging bricks, which are all attached to hanging rods.

[0012] Optionally, the first partition includes a heat insulation layer, a body layer and multiple support beams. The heat insulation layer is attached to the lower side of the body layer, and the multiple support beams are arranged parallel to each other along the length of the second furnace body and are all located below the heat insulation layer. The heat insulation layer is connected to the multiple support beams at the same time. Multiple sets of mounting slots are provided on the inner side of the second furnace body. Each set of mounting slots consists of two slots, which are positioned opposite each other on both sides of the second furnace body. Each support beam has its two ends connected to a set of mounting slots.

[0013] Optionally, the roller kiln also includes a third furnace body and a second partition. The third furnace body is located above the first furnace body and installed within a support frame. The width of the third furnace body and the first furnace body are in the same direction, and the width of the third furnace body is greater than that of the first furnace body. The top of the first furnace body is provided with a second opening. The second partition is connected to the second opening. The third furnace body is covered outside the second opening and forms a second clearance gap with the first furnace body.

[0014] Optionally, the first clearance gap is filled with thermal insulation cotton; And / or, the second furnace body is disposed in the middle of the first furnace body along its width direction; And / or, the first furnace body includes a first main body layer and a first insulation layer, the first insulation layer being adhered to the outside of the first main body layer; the second furnace body includes a second main body layer and a second insulation layer, the second insulation layer being adhered to the outside of the second main body layer. And / or, the roller kiln further includes a first conveying roller and a second conveying roller, the first conveying roller being rotatably installed in the first kiln body and the second conveying roller being rotatably installed in the second kiln body.

[0015] Optionally, the roller kiln further includes a first burner, a first air inlet pipe, a second burner, and a second air inlet pipe. The first burner is installed in the first furnace body and connected to the first air inlet pipe, and the second burner is installed in the second furnace body and connected to the second air inlet pipe. Both the first air inlet pipe and the second air inlet pipe are installed on the support frame.

[0016] The roller kiln provided by this invention has the following beneficial effects: The roller kiln provided by this invention comprises a first furnace body and a second furnace body arranged sequentially from top to bottom, both installed within a supporting frame. The widths of the first and second furnace bodies are the same, with the first furnace body being wider than the second. A first opening is provided at the top of the second furnace body, and a first partition plate is connected within this opening. The first furnace body covers the outside of the first opening, forming a first clearance gap with the second furnace body. This first clearance gap accommodates the thermal expansion of the first and / or second furnace bodies. Compared to existing technologies, the roller kiln provided by this invention, due to the use of a first and second furnace body installed within a supporting frame and the first clearance gap between them, allows for the separate arrangement of the first and second furnace bodies while maintaining structural strength. This avoids furnace body cracking caused by thermal expansion and contraction, improves insulation performance, and enables the production of products of different sizes, demonstrating good versatility. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the structure of a roller kiln provided in an embodiment of the present invention; Figure 2 This is a schematic diagram of the roller kiln from another perspective, provided in an embodiment of the present invention. Figure 3 A schematic diagram of the structure of a roller kiln provided in an embodiment of the present invention, showing the support frame simultaneously connected to the first kiln body and the second kiln body from one perspective. Figure 4 Another structural schematic diagram of the roller kiln provided in an embodiment of the present invention, showing the support frame simultaneously connected to the first kiln body and the second kiln body; Figure 5 for Figure 3 A magnified view of a portion of the V-shape.

[0019] Icons: 100 - Roller kiln; 110 - Support frame; 111 - First load-bearing section; 1111 - First crossbeam; 1112 - First column; 112 - Second load-bearing section; 1121 - Second crossbeam; 1122 - Second column; 113 - Outer frame; 1131 - Top rod; 1132 - Bottom rod; 1133 - First side rod; 1134 - Second side rod; 114 - Connecting rod; 115 - Hanging rod; 120 - First furnace body; 121 - First side wall; 1211 - First bottom wall section; 122 - Second side wall; 1221 - Second bottom wall section; 123 - Top wall; 1231 - Hanging brick; 12 32-Hook; 124-First main body layer; 125-First insulation layer; 130-Second furnace body; 131-First opening; 132-Third side wall; 133-Fourth side wall; 134-Bottom wall; 135-Mounting groove; 136-Second main body layer; 137-Second insulation layer; 140-First partition; 141-Insulation layer; 142-Main body layer; 143-Support beam; 150-First clearance gap; 160-First conveyor roller; 170-Second conveyor roller; 180-First burner; 190-First air inlet pipe; 200-Second burner; 210-Second air inlet pipe. Detailed Implementation

[0020] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0021] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0022] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0023] In the description of this invention, it should be noted that the terms "inner," "outer," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use. They are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. In addition, the terms "first," "second," "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "connected," "installed," and "connected" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0025] The following detailed description of some embodiments of the present invention is provided in conjunction with the accompanying drawings. Unless otherwise specified, features in the following embodiments can be combined with each other.

[0026] Please refer to the reference. Figures 1 to 5This invention provides a roller kiln 100 for kiln production. It allows for the separate configuration of the first kiln body 120 and the second kiln body 130 while ensuring structural strength, avoiding kiln body cracking caused by thermal expansion and contraction, improving heat preservation performance, and enabling the production of products of different sizes, thus exhibiting good versatility.

[0027] The roller kiln 100 includes a support frame 110, a first furnace body 120, a second furnace body 130, and a first partition 140. The first furnace body 120 and the second furnace body 130 are arranged sequentially from top to bottom and are both installed within the support frame 110, i.e., the first furnace body 120 is positioned above the second furnace body 130. The support frame 110 supports and fixes the first furnace body 120 and the second furnace body 130. The first furnace body 120 and the second furnace body 130 have the same width, but the width of the first furnace body 120 is greater than the width of the second furnace body 130; that is, the dimensions of the first furnace body 120 and the second furnace body 130 are different. The top of the second furnace body 130 has a first opening 131, and the first partition 140 is connected within the first opening 131, separating the inner cavity of the first furnace body 120 from the inner cavity of the second furnace body 130. The first furnace body 120 and the first partition 140 together define a first furnace cavity (not shown in the figure), and the second furnace body 130 and the first partition 140 together define a second furnace cavity (not shown in the figure). The width of the first furnace cavity is greater than the width of the second furnace cavity. The first furnace cavity and the second furnace cavity independently heat the materials located inside their respective cavities. Specifically, the first furnace body 120 covers the first opening 131 and forms a first clearance gap 150 between itself and the second furnace body 130. The first clearance gap 150 is used to accommodate the thermal expansion of the first furnace body 120 and / or the second furnace body 130, that is, the first clearance gap 150 can provide deformable space when the first furnace body 120 and / or the second furnace body 130 are thermally expanded, so as to prevent the thermal expansion of the first furnace body 120 and the second furnace body 130 from affecting each other. In this way, on the one hand, the support frame 110 simultaneously supports and fixes the first furnace body 120 and the second furnace body 130, and a first clearance gap 150 is provided between the first furnace body 120 and the second furnace body 130, which can achieve the separate setting of the first furnace body 120 and the second furnace body 130 while ensuring structural strength, avoiding furnace body cracking caused by thermal expansion and contraction, and improving heat preservation performance; on the other hand, by using the first furnace body 120 and the second furnace body 130 with different widths, it is possible to produce products of different sizes, which has good versatility.

[0028] It should be noted that the first furnace body 120 and the second furnace body 130 are independently controlled. The heating temperatures of the first furnace body 120 and the second furnace body 130 can be the same or different. The first furnace body 120 is used to produce larger-sized products, and the second furnace body 130 is used to produce smaller-sized products. During the simultaneous production process of the first furnace body 120 and the second furnace body 130, if the heating temperatures of the first furnace body 120 and the second furnace body 130 are different, it will lead to different degrees of thermal expansion of the first furnace body 120 and the second furnace body 130. In this case, the first clearance gap 150 can accommodate the excess expansion to prevent the first furnace body 120 and the second furnace body 130 from being squeezed and cracked, thereby improving the heat preservation performance and extending the service life.

[0029] Furthermore, the first furnace body 120 includes a first sidewall 121 and a second sidewall 122 disposed opposite to each other, and the support frame 110 includes a first support portion 111 and a second support portion 112 disposed opposite to each other. The second furnace body 130 is disposed between the first support portion 111 and the second support portion 112, the first support portion 111 is disposed below the first sidewall 121 and is used to support the first sidewall 121, and the second support portion 112 is disposed below the second sidewall 122 and is used to support the second sidewall 122. Specifically, by placing the wider first furnace body 120 above the narrower second furnace body 130, and using the first support portion 111 and the second support portion 112 to support the first side wall 121 and the second side wall 122 respectively, the weight of the entire first furnace body 120 can be supported on the support frame 110 without putting pressure on the first furnace body 120. This avoids deformation of the first furnace body 120 under prolonged pressure and prevents direct contact between the first furnace body 120 and the second furnace body 130, thus preventing them from being squeezed and cracked and damaged, and improving the heat preservation performance.

[0030] Optionally, the first supporting part 111 includes a first crossbeam 1111 and a first column 1112 that are perpendicular to each other, with the first crossbeam 1111 connected to the first column 1112. The first crossbeam 1111 is connected to the bottom of the first sidewall 121 and is used to support and fix the first sidewall 121. Along the width direction of the second furnace body 130, the first column 1112 is connected to the outside of the second furnace body 130 (the side away from the second furnace cavity), and is used to support the first crossbeam 1111 and fix the position of the second furnace body 130.

[0031] Accordingly, the second supporting part 112 includes a second crossbeam 1121 and a second column 1122 that are perpendicular to each other, with the second crossbeam 1121 connected to the second column 1122. The second crossbeam 1121 is connected to the bottom of the second side wall 122 and is used to support and fix the second side wall 122. Along the width direction of the second furnace body 130, the second column 1122 is connected to the outer side of the second furnace body 130 (the side away from the second furnace cavity), and is used to support the second crossbeam 1121 and further fix the position of the second furnace body 130.

[0032] In this embodiment, the bottom end of the first sidewall 121 extends inward along the width direction of the first furnace body 120 to form a first bottom wall segment 1211, and the bottom end of the second sidewall 122 extends inward along the width direction of the first furnace body 120 to form a second bottom wall segment 1221. The second furnace body 130 is disposed between the first bottom wall segment 1211 and the second bottom wall segment 1221, and the positions of the first bottom wall segment 1211 and the second bottom wall segment 1221 correspond to the position of the first opening 131. Specifically, both the first sidewall 121 and the second sidewall 122 are L-shaped. The extension distance of the first bottom wall segment 1211 and the second bottom wall segment 1221 needs to be determined according to the design width of the first furnace body 120. If the width of the first furnace body 120 is large, the extension distance of the first bottom wall segment 1211 and the second bottom wall segment 1221 is long; if the width of the first furnace body 120 is small, the extension distance of the first bottom wall segment 1211 and the second bottom wall segment 1221 is short. However, this is not the only option. In other embodiments, the first sidewall 121 may not have a first bottom wall section 1211, and the second sidewall 122 may not have a second bottom wall section 1221. In this case, the width of the first furnace body 120 is minimized.

[0033] Optionally, the second furnace body 130 is disposed in the middle of the first furnace body 120 along its width direction, that is, the center line of the second furnace body 130 in its width direction coincides with the center line of the first furnace body 120 in its width direction. This facilitates production, processing and installation, and can ensure the balance of forces on the first bearing part 111 and the second bearing part 112, preventing the support frame 110 from tipping over or deforming due to uneven forces.

[0034] In this embodiment, there are two first clearance gaps 150. One first clearance gap 150 is located between the first bottom wall section 1211 and the second furnace body 130, and the other first clearance gap 150 is located between the second bottom wall section 1221 and the second furnace body 130. Specifically, the second furnace body 130 includes a third side wall 132 and a fourth side wall 133 arranged opposite to each other, and a first opening 131 is located between the third side wall 132 and the fourth side wall 133. The third side wall 132 and the first side wall 121 are arranged adjacent to each other on the same side, and the fourth side wall 133 and the second side wall 122 are arranged adjacent to each other on the same side. A first clearance gap 150 is provided between the third side wall 132 and the first bottom wall section 1211 of the first side wall 121, and another first clearance gap 150 is provided between the fourth side wall 133 and the second bottom wall section 1221 of the second side wall 122, so as to realize the interval between the first side wall 121 and the third side wall 132 and the interval between the second side wall 122 and the fourth side wall 133, thereby realizing the separate arrangement of the first furnace body 120 and the second furnace body 130, avoiding furnace body cracking caused by thermal expansion and contraction, and improving heat preservation performance.

[0035] Furthermore, the first clearance gap 150 is rectangular, trapezoidal, or triangular, etc. The first clearance gap 150 is filled with insulating cotton (not shown in the figure). The insulating cotton is used to insulate the first furnace body 120, preventing heat from escaping through the first clearance gap 150, thus further improving insulation performance. Since the insulating cotton is a flexible material, it will not interfere with the thermal expansion and contraction of the first furnace body 120 and the second furnace body 130, ensuring stability and durability.

[0036] The support frame 110 includes multiple outer frames 113 and multiple connecting rods 114. The multiple outer frames 113 are arranged parallel to each other along the length direction of the roller kiln 100 (i.e., the length direction of the first kiln body 120 and the second kiln body 130). The multiple connecting rods 114 are arranged parallel to each other and extend along the length direction of the roller kiln 100. The multiple outer frames 113 are simultaneously connected by the multiple connecting rods 114. The multiple connecting rods 114 work together to improve the connection strength of the multiple outer frames 113 and prevent relative displacement and skewness between the multiple outer frames 113. Specifically, the outer frames 113 simultaneously surround and connect to the first kiln body 120 and the second kiln body 130, and are used to fix the relative position of the first kiln body 120 and the second kiln body 130, and to support the first kiln body 120 and the second kiln body 130.

[0037] Furthermore, the outer frame 113 includes a top rod 1131 and a bottom rod 1132 arranged opposite to each other. The first furnace body 120 is provided with a top wall 123, which is connected between the first side wall 121 and the second side wall 122. The first side wall 121, the top wall 123, and the second side wall 122 together form the inner cavity of the first furnace body 120. The second furnace body 130 is provided with a bottom wall 134, which is connected between the third side wall 132 and the fourth side wall 133. The third side wall 132, the bottom wall 134, and the fourth side wall 133 together form the inner cavity of the second furnace body 130. Specifically, the top rod 1131 is disposed above the top wall 123 and connected to the top wall 123. The top rod 1131 is used to hold the top wall 123 in place to support its weight. The bottom rod 1132 is located below the bottom wall 134 and is connected to the bottom wall 134. The bottom rod 1132 is used to support the bottom wall 134 to bear the weight of the bottom wall 134.

[0038] In this embodiment, the outer frame 113 further includes a first side rod 1133 and a second side rod 1134 disposed opposite to each other. The top rod 1131, the first side rod 1133, the bottom rod 1132, and the second side rod 1134 together form a rectangular outer frame 113, wherein the first side rod 1133 is fitted and connected to the first side wall 121, and the second side rod 1134 is fitted and connected to the second side wall 122. Specifically, there are multiple first support parts 111 and second support parts 112, and each first support part 111 and each second support part 112 is connected within an outer frame 113. The first crossbeam 1111 of the first support part 111 is perpendicular to and connected to the first side rod 1133, the first column 1112 is perpendicular to and connected to the bottom rod 1132, and the first column 1112 is fitted and connected to the third side wall 132. The second crossbeam 1121 of the second bearing part 112 is perpendicular to and connected to the second side rod 1134. The second column 1122 is perpendicular to and connected to the bottom rod 1132. The second column 1122 is fitted to and connected to the fourth side wall 133. Diagonal bracing members (not shown in the figure) can be provided between the first crossbeam 1111 and the first side rod 1133, between the first crossbeam 1111 and the first column 1112, between the second crossbeam 1121 and the second side rod 1134, and between the second crossbeam 1121 and the second column 1122.

[0039] It should be noted that the first part of the weight of the first furnace body 120 is supported on the first crossbeam 1111 via the first side wall 121, the second part of the weight is supported on the second crossbeam 1121 via the second side wall 122, and the third part of the weight is supported on the top rod 1131 via the top wall 123; the weight of the second furnace body 130 is supported on the bottom rod 1132 via the bottom wall 134. In this way, through the reasonable distribution of the top rod 1131, the first side rod 1133, the bottom rod 1132, the second side rod 1134, the first crossbeam 1111, the first column 1112, the second crossbeam 1121, and the second column 1122, the weight of the entire first furnace body 120 and the second furnace body 130 can be supported on the support frame 110, thereby achieving stable, reliable, and durable support and fixation for the first furnace body 120 and the second furnace body 130.

[0040] Optionally, the support frame 110 also includes multiple hanging rods 115. The multiple hanging rods 115 are arranged in parallel at intervals and extend along the length of the roller kiln 100. The multiple hanging rods 115 are simultaneously connected to the top rods 1131 of multiple outer frames 113, and the top rods 1131 are used to fix the position of the hanging rods 115. Specifically, the top wall 123 includes multiple hanging bricks 1231, arranged in a rectangular array. Adjacent hanging bricks 1231 are bonded together to fix their relative positions. Hooks 1232 are provided on the top of each hanging brick 1231, and each hook 1232 is attached to a hanging rod 115. The hanging rod 115 can bear the weight of the hanging brick 1231 through the hooks 1232, thereby ensuring that the weight of the top wall 123 is borne by the top rods 1131, improving the reliability of the load-bearing capacity of the support frame 110.

[0041] Optionally, the first partition 140 includes a heat insulation layer 141, a body layer 142, and multiple support beams 143. The heat insulation layer 141 is fitted onto the lower side of the body layer 142. The heat insulation layer 141 is used to insulate the temperatures of the first furnace body 120 and the second furnace body 130 to prevent the temperatures of the first furnace body 120 and the second furnace body 130 from affecting each other and to ensure the quality of their respective products. The multiple support beams 143 are arranged parallel to each other along the length of the second furnace body 130 and are all located below the heat insulation layer 141. The heat insulation layer 141 is connected to the multiple support beams 143. The multiple support beams 143 work together to support and fix the heat insulation layer 141, thereby supporting and fixing the body layer 142 and preventing the heat insulation layer 141 and the body layer 142 from collapsing downwards under the action of gravity.

[0042] Specifically, multiple sets of mounting slots 135 are provided on the inner side of the second furnace body 130. Each set of mounting slots 135 consists of two slots, which are arranged opposite to each other on both sides of the second furnace body 130. One mounting slot 135 in each set is located on the side of the third side wall 132 near the fourth side wall 133, and the other mounting slot 135 is located on the side of the fourth side wall 133 near the third side wall 132. Both ends of each support beam 143 are respectively inserted into a set of mounting slots 135 to limit and fix the support beam 143 and ensure the support effect of the support beam 143.

[0043] Optionally, the first furnace body 120 includes a first main body layer 124 and a first insulation layer 125. The first insulation layer 125 is attached to the outside of the first main body layer 124 and is used to insulate the first main body layer 124 to prevent heat inside the first furnace body 120 from dissipating to the outside through the first main body layer 124.

[0044] Accordingly, the second furnace body 130 includes a second main body layer 136 and a second insulation layer 137. The second insulation layer 137 is attached to the outside of the second main body layer 136 and is used to insulate the second main body layer 136 to prevent heat inside the second furnace body 130 from dissipating to the outside through the second main body layer 136.

[0045] Optionally, the roller kiln 100 further includes a first conveyor roller 160 and a second conveyor roller 170. The first conveyor roller 160 is rotatably mounted inside the first furnace body 120 and is used to convey products along the length of the first furnace body 120. The second conveyor roller 170 is rotatably mounted inside the second furnace body 130 and is used to convey products along the length of the second furnace body 130. Specifically, the first conveyor roller 160 and the second conveyor roller 170 are independently controlled, and their conveying speeds can be the same or different to facilitate the production of different products.

[0046] Optionally, the roller kiln 100 further includes a first burner 180, a first air inlet pipe 190, a second burner 200, and a second air inlet pipe 210. The first burner 180 is installed inside the first furnace body 120 and connected to the first air inlet pipe 190. The first air inlet pipe 190 is used to introduce gas and air into the first burner 180, enabling the first burner 180 to spray flames into the first furnace body 120, thereby achieving the heating function of the first furnace body 120. The second burner 200 is installed inside the second furnace body 130 and connected to the second air inlet pipe 210. The second air inlet pipe 210 is used to introduce gas and air into the second burner 200, enabling the second burner 200 to spray flames into the second furnace body 130, thereby achieving the heating function of the second furnace body 130. Specifically, the first air intake pipe 190 and the second air intake pipe 210 are both installed on the support frame 110. The support frame 110 can support and fix the first air intake pipe 190 and the second air intake pipe 210 to prevent the pipes from collapsing and deforming after long-term use, thus ensuring stability and reliability.

[0047] In this embodiment, the roller kiln 100 includes only two furnace bodies (the first furnace body 120 and the second furnace body 130). However, it is not limited to this. In other embodiments, the roller kiln 100 may include three, four, or even more furnace bodies. The number of furnace bodies in the roller kiln 100 is not specifically limited. When the roller kiln 100 includes three kiln bodies, the roller kiln 100 also includes a third kiln body (not shown) and a second partition (not shown). The third kiln body is located above the first kiln body 120 and is installed in the support frame 110. The width direction of the third kiln body and the first kiln body 120 is the same, and the width of the third kiln body is greater than the width of the first kiln body 120. The top of the first kiln body 120 is provided with a second opening (not shown). The second partition is connected to the second opening and is used to separate the inner cavity of the third kiln body from the inner cavity of the first kiln body 120. The third kiln body is covered outside the second opening and forms a second clearance gap (not shown) between it and the first kiln body 120. The second clearance gap is used to make way for the thermal expansion of the first kiln body 120 and / or the third kiln body.

[0048] The roller kiln 100 provided in this embodiment of the invention has a first furnace body 120 and a second furnace body 130 arranged sequentially from top to bottom and both installed in a support frame 110. The width directions of the first furnace body 120 and the second furnace body 130 are the same, and the width of the first furnace body 120 is greater than the width of the second furnace body 130. The top of the second furnace body 130 is provided with a first opening 131, and a first partition 140 is connected to the first opening 131. The first furnace body 120 covers the first opening 131 and forms a first clearance gap 150 with the second furnace body 130. The first clearance gap 150 is used to make way for the thermal expansion of the first furnace body 120 and / or the second furnace body 130. Compared with the prior art, the roller kiln 100 provided by the present invention adopts a first furnace body 120 and a second furnace body 130 installed in the support frame 110 and a first clearance gap 150 set between the first furnace body 120 and the second furnace body 130. Therefore, it can achieve the separate setting of the first furnace body 120 and the second furnace body 130 while ensuring structural strength, avoid furnace body cracking caused by thermal expansion and contraction, improve heat preservation performance, and realize the production of products of different sizes, with good versatility.

[0049] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A roller kiln, characterized in that, The furnace includes a support frame, a first furnace body, a second furnace body, and a first partition. The first furnace body and the second furnace body are arranged sequentially from top to bottom and are both installed within the support frame. The width of the first furnace body and the second furnace body are the same, and the width of the first furnace body is greater than the width of the second furnace body. The top of the second furnace body is provided with a first opening. The first partition is connected to the first opening. The first furnace body covers the outside of the first opening and forms a first clearance gap with the second furnace body. The first clearance gap is used to accommodate the thermal expansion of the first furnace body and / or the second furnace body.

2. The roller kiln according to claim 1, characterized in that, The first furnace body includes a first sidewall and a second sidewall disposed opposite to each other. The support frame includes a first support portion and a second support portion disposed opposite to each other. The second furnace body is disposed between the first support portion and the second support portion. The first support portion is disposed below the first sidewall and is used to support the first sidewall. The second support portion is disposed below the second sidewall and is used to support the second sidewall.

3. The roller kiln according to claim 2, characterized in that, The first supporting part includes a first crossbeam and a first column that are perpendicular to each other. The first crossbeam is connected to the first column and is connected to the bottom of the first side wall. The first column is connected to the outside of the second furnace body. The second supporting part includes a second crossbeam and a second column that are perpendicular to each other. The second crossbeam is connected to the second column and is connected to the bottom of the second side wall. The second column is connected to the outside of the second furnace body. And / or, the bottom end of the first sidewall extends inward along the width direction of the first furnace body to form a first bottom wall section, the bottom end of the second sidewall extends inward along the width direction of the first furnace body to form a second bottom wall section, and the second furnace body is disposed between the first bottom wall section and the second bottom wall section; And / or, the number of the first clearance gaps is two, the second furnace body includes a third sidewall and a fourth sidewall disposed opposite to each other, the first opening is disposed between the third sidewall and the fourth sidewall, one of the first clearance gaps is disposed between the third sidewall and the first sidewall, and the other of the first clearance gaps is disposed between the fourth sidewall and the second sidewall.

4. The roller kiln according to claim 1, characterized in that, The support frame includes multiple outer frames and multiple connecting rods. The multiple outer frames are arranged parallel to each other along the length direction of the roller kiln, and the multiple connecting rods are arranged parallel to each other and extend along the length direction of the roller kiln. The multiple outer frames are connected by the multiple connecting rods. The outer frames are simultaneously enclosed by the first furnace body and the second furnace body, and are simultaneously connected to the first furnace body and the second furnace body.

5. The roller kiln according to claim 4, characterized in that, The outer frame includes a top rod and a bottom rod arranged opposite to each other. The first furnace body is provided with a top wall, and the second furnace body is provided with a bottom wall. The top rod is located above the top wall and connected to the top wall, and the bottom rod is located below the bottom wall and connected to the bottom wall.

6. The roller kiln according to claim 5, characterized in that, The support frame also includes multiple hanging rods, which are arranged in parallel and spaced apart, and all extend along the length of the roller kiln. The multiple hanging rods are simultaneously connected to the top rods of the multiple outer frames. The top wall includes multiple hanging bricks arranged in a rectangular array. Adjacent hanging bricks are glued together, and hooks are provided on the top of each hanging brick, which are all attached to the hanging rod.

7. The roller kiln according to claim 1, characterized in that, The first partition includes a heat insulation layer, a body layer and multiple support beams. The heat insulation layer is attached to the lower side of the body layer. The multiple support beams are arranged parallel to each other along the length of the second furnace body and are all located below the heat insulation layer. The heat insulation layer is connected to the multiple support beams. The inner side of the second furnace body has multiple sets of mounting slots, with two mounting slots in each set, and they are arranged opposite each other on both sides of the second furnace body. The two ends of each support beam are respectively inserted into one set of mounting slots.

8. The roller kiln according to claim 1, characterized in that, The roller kiln also includes a third furnace body and a second partition. The third furnace body is disposed above the first furnace body and installed within the support frame. The width of the third furnace body and the first furnace body are in the same direction, and the width of the third furnace body is greater than the width of the first furnace body. The top of the first furnace body is provided with a second opening. The second partition is connected to the second opening. The third furnace body covers the second opening and forms a second clearance gap with the first furnace body.

9. The roller kiln according to claim 1, characterized in that, The first clearance gap is filled with thermal insulation cotton; And / or, the second furnace body is disposed in the middle of the first furnace body along its width direction; And / or, the first furnace body includes a first main body layer and a first insulation layer, the first insulation layer being adhered to the outside of the first main body layer; the second furnace body includes a second main body layer and a second insulation layer, the second insulation layer being adhered to the outside of the second main body layer. And / or, the roller kiln further includes a first conveying roller and a second conveying roller, the first conveying roller being rotatably mounted in the first kiln body, and the second conveying roller being rotatably mounted in the second kiln body.

10. The roller kiln according to claim 1, characterized in that, The roller kiln further includes a first burner, a first air inlet pipe, a second burner, and a second air inlet pipe. The first burner is installed in the first furnace body and connected to the first air inlet pipe. The second burner is installed in the second furnace body and connected to the second air inlet pipe. Both the first air inlet pipe and the second air inlet pipe are installed on the support frame.

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