Rolling kiln and heat treatment method thereof

Abstract

The invention discloses a rolling kiln which comprises a kiln body, the kiln body comprises a plurality of kiln units, fluctuating pushing mechanisms are assembled and connected in the kiln units, and a stock bin is pushed in a rolling mode through the fluctuating pushing mechanisms; a bottom plate seat for supporting the stock bin is fixedly connected to the bottom in the kiln unit, and the stock bin is supported on the bottom plate seat to move; the fluctuating pushing mechanism comprises a plurality of push rod structures and further comprises a driving structure for driving the push rod structures to fluctuate and lift alternately; the push rod structure comprises a push rod located in the kiln unit, and the push rod pushes the stock bin to roll over and move. According to the structure, rolling mixing is achieved, the heat treatment effect is remarkably improved, the stock bin rolls on the bottom plate base due to supporting, the heat treatment material amount can be increased, and the technical problems that materials of a traditional roller kiln and a traditional pushed slab kiln are heated unevenly, the yield is low, and the sealing performance of a rotary kiln is poor are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of thermal kilns, and in particular relates to a rolling kiln and a heat treatment method thereof. Background Art

[0002] A roller hearth kiln is a type of kiln used for heat treatment. It consists of multiple sections, each integrally formed to form a continuous kiln. Each section acts as a basic unit for heat treatment, allowing materials to move from the initial heat treatment section to the final section for discharge.

[0003] Different from traditional heat treatment kilns such as rotary kilns and push plate kilns, the way of heat treatment of materials is: the materials are placed in the material box, and the rollers installed in the kiln drive the material box to move. While the material box moves, it is heated in the furnace body.

[0004] Roller hearth kilns are widely used in industry due to their high heat treatment efficiency and significant material heat treatment effects. To achieve even more efficient heat treatment, existing technologies have made technical improvements to roller hearth kilns, including both process and structural improvements.

[0005] For example, Chinese patent application number CN202421383072.4 discloses a roller kiln, including a kiln body, in which rollers for conveying materials are provided. Furthermore, a plurality of cooling air ducts are provided on the top of the kiln body, connected to the inner cavity of the kiln body. One end of the cooling air duct is connected to a fan, and a gas pipe is provided on the side of the kiln body. The kiln body includes an arched kiln body and a flat-top kiln body. Exhaust ducts are provided on both sides of the inner cavity of the flat-top kiln body. The exhaust ducts are connected to the flat-top kiln body by screws. The exhaust ducts on both sides are located above and below the rollers, respectively. The exhaust ducts are connected to the cooling air ducts by pipes. The above-mentioned structural improvements can remove tar and improve the sintering effect at the same time.

[0006] However, the current roller kiln structure for pushing materials is: rollers are arranged horizontally (the rollers pass through a driving structure) and the self-rotating rollers are used to push a rectangular or flat-bottomed material box.

[0007] However, in actual working process, it is found that the heat treatment effect of the kiln with the above structure is very poor and the efficiency is very low for materials with strict heat treatment requirements.

[0008] The problem is that because the materials are stacked in a material box, which is moved horizontally by horizontal rollers, they cannot be turned during the heat treatment process, and the heat is not evenly distributed throughout the material. This also means that the interior of the material is often not fully heated, failing to achieve the desired effect. The materials in the upper layers of the material box, being closer to the surface, receive sufficient heat during the heat treatment process, making them prone to overheating. This overheating can lead to material deterioration after heat treatment.

[0009] The reason is that the roller kiln disclosed in the prior art can only push the material box horizontally, and the essential reason for the above technical defects is caused by the limitation of the movement mode of the material box.

[0010] At the same time, since the material box is directly supported on the roller, and the roller serves as a driving structure with limited load weight, in the actual working process, in order to ensure the normal operation of the roller, the amount of heat-treated material in the material box is small, and the overall efficiency of the heat treatment is not high. Summary of the Invention

[0011] Based on the above background, an object of the present invention is to provide a rolling kiln.

[0012] To achieve the above objectives, the present invention adopts the following technical solutions:

[0013] A rolling kiln comprises a kiln body, the kiln body comprises a plurality of kiln units, the kiln units are equipped with an undulating pushing mechanism, and the hopper is rolled and pushed by the undulating pushing mechanism;

[0014] The bottom of the kiln unit is fixedly connected to a bottom plate base supporting the silo, and the silo is supported and moved on the bottom plate base;

[0015] The undulating pushing mechanism includes a plurality of push rod structures and a driving structure for driving the push rod structures to alternately rise and fall;

[0016] The push rod structure includes a push rod located in the kiln unit and pushing the material bin.

[0017] Preferably, the push rod is hingedly mounted with a connecting rod structure; the connecting rod structure includes a lifting connecting rod fixedly mounted at the center position of the bottom of the push rod, and the lifting connecting rod is slidably connected to the bottom of the base plate;

[0018] A driving link arm is hingedly mounted on the bottom of the lifting link, and the driving link arm is hingedly mounted on the driving structure.

[0019] Preferably, the driving structure comprises a crankshaft, and the crankshaft comprises a plurality of pairs of cranks;

[0020] Connecting rod journals are fixedly installed between the cranks, and the connecting rod journals are staggered in height; the lower end of the lifting connecting rod is hinged with a driving connecting rod arm, and the driving connecting rod arm is hingedly installed on the connecting rod journal;

[0021] It also includes a number of main journals that are fixedly connected to the crank in sequence;

[0022] Drive shafts are fixedly mounted on both ends of the crankshaft, and the drive shafts are rotatably connected to bearing brackets respectively;

[0023] One end of the crankshaft is a power input end, and a transmission structure is installed on the power input end to drive it.

[0024] Preferably, the transmission structure includes a first sprocket mounted on the power input end, and also includes a sprocket motor, and the sprocket motor is equipped with a second sprocket that drives the first sprocket through a chain.

[0025] Preferably, a kiln bottom bracket is fixedly installed on the bottom of the kiln body;

[0026] The bearing brackets are fixedly mounted on the bottom position of the kiln bottom bracket through mounting brackets respectively;

[0027] The sprocket motor is fixedly mounted with a motor bracket, and the motor bracket is fixedly mounted at the bottom position of the kiln bottom bracket.

[0028] Preferably, the top of the driving link arm is fixedly connected to a hinge seat, and the lower end of the lifting link is hingedly mounted on the hinge seat.

[0029] Preferably, the silo is in the shape of a double-tapered cylinder; the silo comprises a cylindrical portion located at the center, and tapered portions are integrally formed at both ends of the cylindrical portion;

[0030] A feed port is provided on the tapered portion.

[0031] Preferably, the driving structure includes a plurality of electric telescopic rods;

[0032] The pushing end of the electric telescopic rod is fixedly mounted with a push rod, which is slidably connected to the base plate seat; the push rod is fixedly mounted with the push rod.

[0033] Preferably, the push rod is detachably mounted on the top of the lifting link.

[0034] The present invention also discloses a method for heat treating materials based on the above-mentioned rolling kiln, comprising the following steps:

[0035] (1) Load the material into the silo and send it into the kiln unit at the starting position for heat treatment;

[0036] (2) The driving structure drives the lower push rod structure to alternately rise and fall;

[0037] (3) During the alternating ups and downs of the push rod structure, the push rod alternately supports the bottom side of the silo, rolling the silo forward on the bottom plate seat;

[0038] (4) The silo enters the kiln unit at the next position and continues to roll until the silo discharges the material from the kiln unit at the end position.

[0039] The present invention has the following beneficial effects:

[0040] 1. The present invention designs the roller rod of the traditional horizontal pushing mode into a push rod that can rise and fall, and at the same time improves the shape of the silo. In combination with the rising and falling mode of the push rod roller, the silo can be flipped and moved forward during the process of the push rod pushing the silo forward with this type of movement.

[0041] The silo moves forward in a rolling manner. During the forward movement, the silo rolls and mixes the materials in the silo. While increasing the degree of mixing, the uniformity of the heat treatment of the materials is improved, thereby improving the heat treatment effect.

[0042] 2. Since the hopper supports and rolls on the bottom plate, the bottom plate bears the weight of the hopper and the material in the hopper. Therefore, compared with the traditional hopper support and rolling on the roller rod method, its advantages are:

[0043] The amount of heat-treated material can be increased because the bottom seat bears the gravity load, while the rollers in traditional roller kilns bear the gravity load. If the gravity load on the rollers is too large (too much material), it is easy to cause the rollers to break. Therefore, the current roller kilns can heat-treat less material.

[0044] 3. This invention fundamentally improves the material heat treatment process. Unlike traditional horizontally moving silo heat treatment methods, the disclosed heat treatment method significantly surpasses traditional roller kilns in terms of heat treatment efficiency, effectiveness, and material qualification rate. A single push rod performs up and down reciprocating motion. During operation, multiple push rods perform a wave-like undulating motion, sequentially pushing the cylindrical silo forward at a specified time and distance.

[0045] 4. The present invention discloses a rolling kiln with a brand-new structure, which solves the defects of traditional push plate kilns and roller kilns, such as uneven heating of materials in a static state, unstable rotary seal, and difficult atmosphere control. BRIEF DESCRIPTION OF THE DRAWINGS

[0046] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0047] Figure 1 Schematic diagram of the overall structure of an embodiment of the present invention;

[0048] Figure 2 This is a schematic diagram of the overall structure of the kiln unit installation undulating pushing mechanism in an embodiment of the present invention;

[0049] Figure 3 This is a structural diagram of an undulating pushing mechanism pushing a silo in an embodiment of the present invention;

[0050] Figure 4 This is a structural diagram of the undulating pushing mechanism in an embodiment of the present invention;

[0051] Figure 5 Schematic diagram of the structure of the push rod installation connecting rod structure in an embodiment of the present invention;

[0052] Figure 6 This is a schematic diagram of the principle structure of the undulating pushing mechanism pushing the silo in an embodiment of the present invention;

[0053] Figure 7 This is a schematic diagram of the structure in which the silo is supported between adjacent push rods in an embodiment of the present invention;

[0054] Figure 8 This is a structural diagram of a silo and a push rod in an embodiment of the present invention;

[0055] Figure 9 This is a schematic diagram of the structure of the silo rolling on the bottom plate seat in an embodiment of the present invention;

[0056] Figure 10 This is a schematic structural diagram of the electric telescopic rod, the top rod, and the push rod in an embodiment of the present invention;

[0057] Figure 11 This is a schematic diagram of the structure of the electric telescopic rod pushing the silo in an embodiment of the present invention.

[0058] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0059] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0060] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0061] In addition, in the present invention, descriptions such as "first" and "second" are for descriptive purposes only and should not be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the technical solutions between the various embodiments can be combined with each other, but this must be based on the fact that they can be implemented by ordinary technicians in this field. 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.

[0062] Example 1

[0063] like Figure 1-9 The figure shows a rolling kiln, comprising a kiln body. The kiln body is the main structure of a conventional roller kiln disclosed in the prior art. Similar to existing roller kilns, the kiln body is divided into several integrally formed sections of kiln units 1, each serving as a basic unit for heat treatment. As with existing methods, during the heat treatment process, material (bin 3) is fed into the starting kiln unit 1, passes through all kiln units 1, and is discharged from the final kiln unit 1.

[0064] The structure and method of heat treating materials in the existing kiln body are the same, and the heating system structure in each kiln unit 1 is used to heat the silo 3 (such as an electric heating system structure).

[0065] Those skilled in the art can clearly understand the specific structure of the kiln body and the kiln unit 1 disclosed in the present invention and the specific structure and principle of heat treatment materials by referring to technical manuals and dictionaries.

[0066] Because the existing roller kiln pushes the silo 3 forward for heat treatment in a horizontal pushing manner, the materials piled in the silo 3 cannot be fully mixed during the movement and cannot be heated evenly during the heat treatment process, resulting in the materials near the surface of the silo 3 being easily overheated, while the materials deep in the silo 3 are easily heated unevenly.

[0067] Therefore, the present invention improves the structure by designing the roller rod of the traditional horizontal pushing method into a push rod 232 that can rise and fall, and at the same time improves the shape of the silo 3, and cooperates with the rising and falling method of the push rod 232 to achieve the process of pushing the silo 3 forward by the push rod 232 of this type of movement, flipping the silo 3, and moving the silo 3 horizontally.

[0068] Specifically, a single push rod 232 performs an up-and-down reciprocating motion. During operation, multiple push rods 232 perform a wave-like undulating motion, sequentially pushing the cylindrical silo 3 forward according to a specified time and distance.

[0069] The silo 3 is moved in a rolling forward manner. Under this motion trajectory, first, the silo 3 is turned over, causing the materials in the silo 3 to be mixed during the turning process.

[0070] Therefore, the present invention essentially improves the heat treatment process of materials. Different from the traditional horizontally pushed silo 3 heat treatment method, the heat treatment method disclosed in the present invention is significantly higher than the traditional roller kiln and push plate kiln in heat treatment efficiency, effect and material qualification rate, and at the same time solves the technical defect of low sealing in the traditional rotary kiln heat treatment process.

[0071] At the same time, a bottom plate seat 4 is fixedly installed on the bottom of the kiln unit 1 , and the silo 3 is supported and rolled on the bottom plate seat 4 .

[0072] In this way, since the silo 3 is supported and rolled on the base plate 4, the base plate 4 bears the weight of the silo 3 and the material in the silo 3. Therefore, compared with the traditional method of supporting the hopper and rolling on the roller, the advantages are:

[0073] The amount of heat-treated material can be increased because the bottom seat 4 bears the gravity load, while the rollers in traditional roller kilns bear the gravity load. If the gravity load on the rollers is too large (too much material), it is easy to cause the rollers to break. Therefore, the current roller kilns can heat-treat less material.

[0074] Therefore, in actual working process, a silo 3 with a larger volume can be used to load more materials for heat treatment.

[0075] Example 2

[0076] like Figure 1-9 As shown, this embodiment specifically discloses the specific structure of the silo 3 rotating and undulating forward heat treatment.

[0077] Specifically, each kiln unit 1 is equipped with an undulating pushing mechanism 2 , which pushes the hopper 3 .

[0078] Specifically, the undulating pushing mechanism 2 includes a plurality of push rod structures 23, and also includes a driving structure for driving the push rod structure 23 to alternately rise and fall; the push rod structure 23 includes a push rod 232 located in the kiln unit 1, and the push rod 232 is hingedly installed with a connecting rod structure; the connecting rod structure is driven to rise and fall through the driving structure.

[0079] Specifically, the connecting rod structure includes a lifting connecting rod 231 fixedly installed at the center position of the bottom of the push rod 232 (in actual operation, the push rod 232 is detachable, such as being fastened to the top of the lifting connecting rod 231 by bolts), and the lifting connecting rod 231 is slidably connected to the bottom of the kiln unit 1 (slidingly installed on the base plate seat 4).

[0080] According to the existing sliding connection method, in order to increase the stability of the sliding connection, a high-temperature resistant guide sleeve can be installed at the bottom of the base plate seat 4 to increase the stability of the sliding.

[0081] At the same time, a driving link arm 22 is hingedly mounted on the bottom of the lifting link 231 , and the driving link arm 22 is hingedly mounted on the driving structure.

[0082] The specific articulation method is: the top of the driving link arm 22 is fixedly connected to the articulated seat 221 , the lower end of the lifting link 231 is fixedly connected to a mounting sleeve, and the mounting sleeve is hingedly mounted on a pin on the articulated seat 221 .

[0083] In order to push the silo 3 in an up-and-down manner, the present invention adopts a crankshaft connecting rod structure as a power structure for driving the push rod 232 structure 23 to rise and fall.

[0084] Specifically, the driving structure includes a crankshaft, wherein the crankshaft is a conventional crankshaft structure disclosed in the prior art, and is the same as the crankshaft structure disclosed in the prior art. The crankshaft includes several pairs of cranks 21; connecting rod journals are fixedly installed between the cranks 21, and the connecting rod journals are staggered in height; the driving connecting rod arm 22 is hingedly installed on the connecting rod journal.

[0085] The specific hinge method is the same as that of the existing hinge push rod 232 structure 23. A bearing is installed at the bottom of the driving connecting rod arm 22, and the bearing is hingedly installed on the connecting rod journal.

[0086] At the same time, the structure is the same as the existing crankshaft connecting rod structure, and also includes a number of main journals that are fixedly connected to the crank 21 in sequence.

[0087] A driving shaft is fixedly installed at both ends of the crankshaft (specifically, one end is the front driving shaft and the other end is the rear driving shaft). According to the existing rotation connection method, the driving shafts are respectively rotatably connected to the bearing bracket 25 (the front driving shaft and the rear driving shaft are rotatably connected to the bearings on the bearing bracket 25).

[0088] At the same time, the bearing bracket 25 is fixedly mounted to the bottom of the kiln bottom bracket via a mounting bracket (specifically, similar to the mounting structure of existing roller kilns, the kiln bottom bracket is fixedly mounted to the bottom of the kiln body, and each kiln unit 1 is arranged and mounted on the top of the kiln bottom bracket). This method allows the drive structure to be hoisted at the bottom of the kiln body.

[0089] One end of the crankshaft is a power input end (rear end driving shaft), and a transmission structure is installed on the power input end to drive it.

[0090] Specifically, the transmission structure includes a first sprocket 23 installed on the power input end, and also includes a sprocket motor 24. The sprocket motor 24 is equipped with a second sprocket that drives the first sprocket 23 through a chain.

[0091] According to the existing motor fixed installation method, the sprocket motor 24 is fixedly installed with a motor bracket (not shown in the figure), and the motor bracket is fixedly installed at the bottom position of the kiln bottom bracket.

[0092] During operation, when the power input end of the crankshaft is driven to rotate by the sprocket motor 24, the driving link arms 22 hingedly arranged at the height position fluctuate in height, and the corresponding hinged lifting link 231 fluctuates in height, so the push rod 232 fluctuates in height alternately.

[0093] During this process, since the bottom of the silo 3 is supported between adjacent push rods 232, when the push rod 232 on one side lifts the silo 3, the push rod 232 on the other side decreases in height, so the silo moves forward in a rolling manner.

[0094] The advantages obtained by the above motion trajectory are:

[0095] The materials in the silo 3 can be turned over and mixed, thereby fully mixing the materials in the silo 3. This increases the heat treatment efficiency of the materials.

[0096] Example 3

[0097] like Figure 1-9 As shown, in order to cooperate with the push rod 232 to push the silo 3 in an up-and-down manner, the present embodiment improves the traditional shape of the silo 3 into a silo 3 that can be easily turned over.

[0098] Specifically, the silo 3 is in the shape of a double cone cylinder. The silo 3 comprises a cylindrical portion at the center, with tapered portions integrally formed at both ends of the cylindrical portion (the tapered portions are designed to prevent material from leaking from the silo 3); and a feed port is provided on the tapered portions.

[0099] During the heat treatment process, the silo 3 with a conical cylindrical structure is continuously turned over and shaken to mix the materials in the above-mentioned manner.

[0100] Example 4

[0101] like Figure 1-11 As shown, this embodiment discloses another driving structure. Specifically, the driving structure includes a plurality of electric telescopic rods 5; wherein the electric telescopic rods 5 are conventional electric push rods disclosed in the prior art.

[0102] In actual operation, an electric push rod of corresponding model (driving force) is selected according to the total weight of the silo 3 and the materials in the silo 3 to ensure that the electric telescopic rod 5 can push the silo 3 to roll.

[0103] At the same time, a push rod 51 is fixedly installed on the pushing end of the above-mentioned electric telescopic rod 5, and the push rod 51 is slidably connected to the bottom plate seat 4.

[0104] During the working process, the operator alternately opens the electric telescopic rod 5, and the electric telescopic rod 5 drives the push rod 51 and the push rod 232, so that the push rod 232 can flip the silo pusher 3 in an alternate lifting manner.

[0105] According to the existing fixing method of the electric telescopic rod 5, the electric telescopic rod 5 is fixedly installed at the bottom position of the kiln bottom bracket by means of a fixing bracket.

[0106] Example 5

[0107] like Figure 1-11 As shown, this embodiment is based on the structure of Example 4 and, in accordance with the existing PLC control method, the electric telescopic rod 5 is controlled by a PLC control system. Specifically, the electric telescopic rod 5 is controlled by the PLC control system to work in an alternating manner, so that the electric telescopic rod 5 alternately lifts and drives the top rod 51 and the push rod 232.

[0108] The use of a PLC control system to control the alternating lifting and lowering drive of the electric telescopic rod 5 is a common application of PLC control systems in the prior art. Those skilled in the art can understand the specific control structure and control principle of how the present invention controls the lifting and lowering drive of the electric telescopic rod 5 through the PLC control system by consulting technical manuals and dictionaries.

[0109] Of course, the above description is not a limitation of the present invention, and the present invention is not limited to the above examples. Changes, modifications, additions or substitutions made by technicians in this technical field within the essential scope of the present invention should also fall within the scope of protection of the present invention.

Claims

1. A rolling kiln, comprising a kiln body, wherein the kiln body comprises a plurality of kiln units, characterized in that: The kiln unit is equipped with an undulating pushing mechanism, which rolls the silo. The bottom of the kiln unit is fixedly connected to a bottom plate base supporting the silo, and the silo is supported and moved on the bottom plate base; The undulating pushing mechanism includes a plurality of push rod structures and a driving structure for driving the push rod structures to alternately rise and fall; The push rod structure includes a push rod located in the kiln unit and used for pushing the silo.

2. The rolling kiln according to claim 1, characterized in that The push rod is hingedly mounted with a connecting rod structure; the connecting rod structure includes a lifting connecting rod fixedly mounted at the center of the bottom of the push rod, and the lifting connecting rod is slidably connected to the bottom of the base plate; A driving link arm is hingedly mounted on the bottom of the lifting link, and the driving link arm is hingedly mounted on the driving structure.

3. The rolling kiln according to claim 2, characterized in that The driving structure includes a crankshaft, and the crankshaft includes a plurality of pairs of cranks; Connecting rod journals are fixedly installed between the cranks, and the connecting rod journals are staggered in height; the lower end of the lifting connecting rod is hinged with a driving connecting rod arm, and the driving connecting rod arm is hingedly installed on the connecting rod journal; It also includes a number of main journals that are fixedly connected to the crank in sequence; Drive shafts are fixedly mounted on both ends of the crankshaft, and the drive shafts are rotatably connected to bearing brackets respectively; One end of the crankshaft is a power input end, and a transmission structure is installed on the power input end to drive it.

4. The rolling kiln according to claim 3, characterized in that The transmission structure includes a first sprocket installed on the power input end, and also includes a sprocket motor. The sprocket motor is equipped with a second sprocket that drives the first sprocket through a transmission belt chain.

5. The rolling kiln according to claim 4, characterized in that A kiln bottom bracket is fixedly installed on the bottom of the kiln body; The bearing brackets are fixedly mounted on the bottom position of the kiln bottom bracket through mounting brackets respectively; The sprocket motor is fixedly mounted with a motor bracket, and the motor bracket is fixedly mounted at the bottom position of the kiln bottom bracket.

6. The rolling kiln according to claim 2, characterized in that The top of the driving link arm is fixedly connected with a hinge seat, and the lower end of the lifting link is hingedly installed on the hinge seat.

7. The rolling kiln according to claim 2, characterized in that The push rod is detachably mounted on the top of the lifting connecting rod.

8. The rolling kiln according to claim 1, characterized in that The silo is in the shape of a double-tapered cylinder; the silo comprises a cylindrical portion located at the center, with tapered portions integrally formed at both ends of the cylindrical portion; A feed port is provided on the tapered portion.

9. The rolling kiln according to claim 1, characterized in that The driving structure includes a plurality of electric telescopic rods; A push rod is fixedly mounted on the pushing end of the electric telescopic rod, and the push rod is slidably connected to the base plate; The push rod is fixedly mounted on the top rod.

10. The method for heat treating materials in a rolling kiln according to any one of claims 1 to 9, characterized in that: The following steps are involved: (1) Load the material into the silo and send it into the kiln unit at the starting position for heat treatment; (2) The driving structure drives the lower push rod structure to alternately rise and fall; (3) During the alternating ups and downs of the push rod structure, the push rod alternately supports the bottom side of the silo, rolling the silo forward on the bottom plate seat; (4) The silo enters the kiln unit at the next position and continues to roll until the silo discharges the material from the kiln unit at the end position.

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