A rotary kiln and its adaptive roller support device

Abstract

The present invention discloses a rotary kiln and its adaptive roller support device, wherein the roller support device is arranged between the furnace tube and the roller, the roller support device comprises a base, an elastic support, and a roller bracket, the roller bracket is L-shaped, and comprises a bottom plate and a vertical plate, the bottom plate is connected to the base through an elastic bracket, the base is fixed to the outer periphery of the furnace tube, and the vertical plate is installed on the side of the roller; the rotary kiln comprises a roller and a roller support device, the roller support devices are arranged on both sides of the roller, and the roller support devices on each side are distributed on the circular surface of the side of the roller in a circular array with the center of the furnace tube and the roller as the center of the circle. The present invention ensures that the roller and the wheel belt, the center line of the roller and the center line of the cylinder are always kept parallel by arranging a supporting roller device, so that the force between the roller and the wheel belt is uniform, and the supporting load in the rotary kiln is evenly distributed.

Description

Technical Field

[0001] The invention relates to the field of rotary kiln firing equipment, and in particular to a rotary kiln and an adaptive supporting wheel device thereof. Background Art

[0002] The rotary kiln is the most critical equipment in the clinker calcining process. The strong thermal load and continuous production work system have very strict requirements on the equipment quality and operation methods. Its operating conditions are directly related to whether the entire production process line can operate normally. In theory, the rotary kiln cylinder is placed on the support roller with an inclination of 3% to 4%, and the center line of the support roller is parallel to the center line of the cylinder. In fact, the rotary kiln may cause the center line of the support roller to be non-parallel with the center line of the cylinder due to factors such as uneven foundation settlement, cylinder bending deformation, equipment wear, and manufacturing errors in the equipment's external dimensions. This causes extremely uneven force between the support roller and the wheel band, as well as contact between the wheel band and the support wheel edge, which ultimately leads to pitting or even peeling on the surface of the burnt tile or the support wheel band. Once the above problems occur, the center line of the support roller must be adjusted repeatedly manually. The adjustment is cumbersome and the workload is large.

[0003] Therefore, it is necessary to adopt a support device for the supporting roller so that the supporting roller support can adapt to these changes when the kiln working conditions change and maintain good contact between the supporting roller and the wheel band, thereby avoiding many negative effects caused by changes in the kiln working conditions. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a rotary kiln and its adaptive roller supporting device. By setting a supporting roller device, it is ensured that the supporting roller and the wheel belt, the center line of the supporting roller and the center line of the cylinder always remain parallel, so that the force between the supporting roller and the wheel belt is uniform, and the supporting load in the rotary kiln is evenly distributed.

[0005] In order to solve the above technical problems, the present invention provides an adaptive roller support device, characterized in that the roller support device is arranged between the furnace tube and the roller, the roller support device includes a base, an elastic support, and a roller bracket, the roller bracket is L-shaped, including a bottom plate and a vertical plate, the bottom plate is connected to the base through an elastic bracket, the base is fixed to the outer periphery of the furnace tube, and the vertical plate is installed on the side of the roller.

[0006] In a preferred embodiment of the present invention, the connection surface between the base and the furnace tube is an arc surface matching the curvature of the furnace tube, and the connection surface between the bottom plate and the elastic support is a plane.

[0007] In a preferred embodiment of the present invention, the vertical plate is further provided with screw holes, and the vertical plate is fixed to the supporting wheel by bolt locking.

[0008] In a preferred embodiment of the present invention, the elastic support further includes an upper pressure plate and a lower pressure plate respectively connected to the base and the support roller bracket, a support sleeve is arranged between the upper pressure plate and the lower pressure plate, the support sleeve is a sleeve-like structure with one end open, the open end of the support sleeve is arranged toward the lower pressure plate, an elastomer is arranged in the opening of the support sleeve, the elastomer supports the support sleeve so that there is a certain distance between the support sleeve and the lower pressure plate.

[0009] In a preferred embodiment of the present invention, a limiting structure is further provided in the elastic support, wherein the limiting structure is provided between the lower pressing plate and the support sleeve, and the limiting structure connects the lower pressing plate and the support sleeve to limit the movement of the support sleeve above the lower pressing plate.

[0010] In a preferred embodiment of the present invention, the limiting structure further includes a limiting baffle plate arranged on the left and right sides of the lower pressure plate and a pressure plate arranged on the limiting baffle plate, one end of the pressure plate is fixedly arranged on the limiting baffle plate, and the other end is arranged toward the inner side of the limiting baffle plate, and a limiting boss is formed on the inner side of the limiting baffle plate. The support sleeve is provided with a limiting flange protruding from the outer wall of the support sleeve on one side of the opening end, and the limiting flange is located between the pressure plate and the lower pressure plate, and is arranged in coordination with the limiting boss.

[0011] In a preferred embodiment of the present invention, the elastic body is further comprised of a compression spring, an air spring or an elastic rubber.

[0012] In order to solve the above technical problems, the present invention provides a rotary kiln, comprising a supporting roller and the above-mentioned supporting roller supporting device, wherein the supporting roller supporting devices are respectively arranged on both sides of the supporting roller, and the supporting roller supporting devices on each side are distributed on the circular surface of the side of the supporting roller in a circular array with the center of the furnace tube and the supporting roller as the center of the circle.

[0013] In a preferred embodiment of the present invention, the supporting roller devices on both sides of the supporting roller are further connected via a ball joint tie rod.

[0014] In a preferred embodiment of the present invention, auxiliary supporting wheels are further provided on both sides below the supporting wheel, and the auxiliary supporting wheels are connected to the supporting wheel via sprockets.

[0015] Beneficial effects of the present invention:

[0016] The supporting roller device of the present invention is arranged between the original furnace tube and the supporting roller, and an elastic support is arranged to elastically support the supporting roller, thereby ensuring that the supporting roller and the belt, the center line of the supporting roller and the center line of the cylinder body are always in a parallel state, so that the force between the supporting roller and the belt is uniform, and the problem of extremely uneven force between the supporting roller and the belt and contact between the sprocket and the supporting roller edge caused by the non-parallelism between the supporting roller and the belt can be effectively solved. The service life of the supporting parts such as the belt and the supporting roller is extended.

[0017] The rotary kiln of the present invention is provided with the above-mentioned roller supporting devices on both sides of the roller, and the roller supporting devices on each side are distributed on the circular surface of the side of the roller in a circular array with the center of the furnace tube and the roller as the center, forming a plurality of roller supporting devices surrounding the side of the roller. During the rotation of the roller, there are elastic supports for elastic support at any position, so that the rotary kiln support load is evenly distributed without deviation during the long-term rotation of the roller, thereby preventing the occurrence of pitting or even peeling of the surface of the burnt tiles or the roller belt. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the assembly structure of the adaptive roller support device of the present invention;

[0019] Figure 2 It is a structural schematic diagram of the supporting device of the supporting roller of the present invention;

[0020] Figure 3 It is a structural schematic diagram of the elastic support of the present invention;

[0021] Figure 4 It is a structural schematic diagram of the side surface of the rotary furnace supporting wheel of the present invention;

[0022] Figure 5 It is a structural schematic diagram of a rotary kiln of the present invention.

[0023] Explanation of the numbers in the figure: 1. Support device for supporting rollers; 11. Base; 12. Elastic support; 121. Upper pressure plate; 122. Lower pressure plate; 123. Support sleeve; 124. Elastic body; 125. Limit baffle; 126. Pressure plate; 127. Limit boss; 128. Limit flange; 13. Support roller bracket; 2. Furnace tube; 3. Support roller; 4. Auxiliary support roller; 5. Ball joint pull rod. DETAILED DESCRIPTION

[0024] The present invention is further described below in conjunction with the accompanying drawings and specific embodiments so that those skilled in the art can better understand the present invention and implement it, but the embodiments are not intended to limit the present invention.

[0025] Reference Figure 1-2As shown, an embodiment of the adaptive roller support device of the present invention, the roller support device 1 of this embodiment is arranged between the furnace tube 2 and the roller 3, the roller support device 1 comprises a base 11, an elastic support 12, and a roller bracket 13, the roller bracket 13 is L-shaped, comprising a bottom plate and a vertical plate, the bottom plate is connected to the base 11 through the elastic bracket 12, the base 11 is fixed to the outer periphery of the furnace tube 2, the base 11 is welded to the furnace tube 2, the vertical plate and the side of the roller 3 are provided with screw holes, the vertical plate is fixed to the roller 3 by bolt locking, In this embodiment, a roller support device 1 is arranged between the original furnace tube 2 and the roller 3, and the roller 3 and the wheel belt sleeved on the outside of the roller 3 are elastically supported by the elastic support 12 inside the roller support device 1, thereby ensuring that the roller 3 and the wheel belt, and the center line of the roller 3 and the center line of the cylinder are always kept parallel, so that the force between the roller 3 and the wheel belt is uniform, which can effectively solve the problem of extremely uneven force between the roller 3 and the wheel belt caused by the non-parallelism of the roller 3 and the wheel belt and the contact between the sprocket and the roller edge, thereby extending the service life of the components such as the wheel belt and the roller 3 at the support.

[0026] Since the furnace tube 2 is a tubular structure, it is not convenient to directly set the elastic support 12 on the outer wall of the furnace tube 2. In this embodiment, the base 11 is used for transition connection. Specifically, the connection surface between the base 11 and the furnace tube 2 is set to be an arc surface matching the curvature of the furnace tube 2, and the connection surface between the bottom plate 11 and the elastic support 12 is a plane. In this way, the connection between the furnace tube 2 and the base 11 is realized, and a placement space for the elastic support 12 is provided.

[0027] Reference Figure 3 As shown, the elastic support 12 includes an upper pressure plate 121 and a lower pressure plate 122 respectively connected to the base 11 and the support roller bracket 13, and a support sleeve 123 is arranged between the upper pressure plate 121 and the lower pressure plate 122. The support sleeve 123 is a sleeve-shaped structure with an opening at one end, and the open end of the support sleeve 123 is arranged toward the lower pressure plate. An elastomer 124 is arranged in the opening of the support sleeve 123, and the elastomer 124 supports the support sleeve 123 so that there is a certain distance between the support sleeve 123 and the lower pressure plate 122. The reserved distance in this embodiment is the distance for adjusting the center line offset of the support roller 3.

[0028] In order to prevent the elastic body 124 from ejecting the support sleeve 123 during the rebound process, a limiting structure is arranged in the elastic support 12, and the limiting structure is arranged between the lower pressure plate 122 and the support sleeve 123. The limiting structure connects the lower pressure plate 122 and the support sleeve 123, and is used to limit the movement of the support sleeve 123 toward the upper side of the lower pressure plate 122.

[0029] Specifically, the limiting structure includes a limiting baffle 125 arranged on the left and right sides of the lower pressure plate 122 and a pressure plate 126 arranged on the limiting baffle 125. One end of the pressure plate 126 is fixedly set on the limiting baffle 125, and the other end is extended toward the inner side of the limiting baffle 125. A limiting boss 127 is formed on the inner side of the limiting baffle 125. The support sleeve 123 is provided with a limiting flange 128 protruding from the outer wall of the support sleeve 123 on one side of the opening end. The limiting flange 128 is located between the pressure plate 126 and the lower pressure plate 122, and is arranged in cooperation with the limiting boss 127.

[0030] Specifically, the elastic body 124 is a compression spring, an air spring or elastic rubber.

[0031] Reference Figure 4 As shown, an embodiment of the rotary kiln of the present invention comprises a supporting roller 3 and the above-mentioned supporting roller support device 1, wherein the supporting roller support devices 1 are respectively arranged on both sides of the supporting roller 3, and the supporting roller support devices 1 on each side are distributed on the circular surface of the side of the supporting roller 3 in a circular array with the center of the furnace tube 2 and the supporting roller 3 as the center, forming a plurality of supporting roller support devices 1 surrounding the side of the supporting roller 3. During the rotation of the supporting roller 3, no matter at any position, there is an elastic support 12 for elastic support, so as to keep the supporting load of the rotary kiln evenly distributed without deviation during the long-term rotation of the supporting roller, and prevent the occurrence of pitting or even peeling of the surface of the burning tile or the supporting roller belt. During long-term use, uneven foundation settlement, bending and deformation of the cylinder, and equipment wear at any position of the supporting roller in the rotary kiln can be adaptively adjusted by the supporting roller support device 1.

[0032] In this embodiment, auxiliary supporting wheels 4 are arranged on both sides below the supporting wheel 3. The auxiliary supporting wheels 4 are connected to the supporting wheel 3 via a sprocket. The auxiliary supporting wheels 4 are arranged to support and drive the supporting wheel 3 to rotate.

[0033] Reference Figure 5 As shown, the roller support devices 1 on both sides of the roller 3 are connected by a ball joint tie rod 5, the vertical plate of the roller support device 1 protrudes from the roller 3, a ball head seat is provided on the protruding part of the vertical plate, the ball joint tie rod 5 is inserted into the ball head seat, and the two roller brackets 13 are connected by the ball joint tie rod 5 to balance the horizontal force of the rollers 3 on both sides, and the ball joint structure of the ball joint tie rod 5 satisfies that the rotation freedom of the left and right side roller brackets 13 relative to the horizontal plane is not restricted.

[0034] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. An adaptive roller support device, characterized in that: The roller support device is arranged between the furnace tube and the roller, and the roller support device comprises a base, an elastic support, and a roller bracket. The roller bracket is L-shaped and comprises a bottom plate and a vertical plate. The bottom plate is connected to the base through an elastic support. The base is fixed to the outer periphery of the furnace tube, and the vertical plate is installed on the side of the roller. The connection surface between the base and the furnace tube is an arc surface matching the curvature of the furnace tube, and the connection surface between the bottom plate and the elastic support is a plane; The vertical plate is provided with screw holes, and the vertical plate is fixed on the supporting wheel by bolt locking; The elastic support comprises an upper pressing plate and a lower pressing plate respectively connected to the base and the supporting wheel bracket, a supporting sleeve is arranged between the upper pressing plate and the lower pressing plate, the supporting sleeve is a sleeve-shaped structure with one end open, the open end of the supporting sleeve is arranged toward the lower pressing plate, an elastic body is arranged in the opening of the supporting sleeve, the elastic body supports the supporting sleeve, so that there is a certain distance between the supporting sleeve and the lower pressing plate; A limiting structure is arranged in the elastic support, the limiting structure is arranged between the lower pressing plate and the support sleeve, the limiting structure connects the lower pressing plate and the support sleeve, and is used to limit the support sleeve from moving upwards toward the lower pressing plate; The limiting structure includes limiting baffles arranged on the left and right sides of the lower pressure plate and a pressure plate arranged on the limiting baffle. One end of the pressure plate is fixedly set on the limiting baffle, and the other end is respectively set toward the inner side of the limiting baffle. A limiting boss is formed on the inner side of the limiting baffle. The support sleeve is provided with a limiting flange protruding from the outer wall of the support sleeve on one side of the opening end. The limiting flange is located between the pressure plate and the lower pressure plate, and is arranged in coordination with the limiting boss.

2. The adaptive roller support device according to claim 1, characterized in that: The elastic body is a compression spring, an air spring or elastic rubber.

3. A rotary kiln, comprising a supporting wheel, characterized in that: It also includes the roller support device according to any one of claims 1-2, wherein the roller support devices are respectively arranged on both sides of the roller, and the roller support devices on each side are distributed on the circular surface of the side of the roller in a circular array with the center of the furnace tube and the roller as the center.

4. The rotary kiln according to claim 3, characterized in that: The supporting wheel support devices on both sides of the supporting wheel are connected through a ball joint tie rod.

5. The rotary kiln according to claim 3, characterized in that: Auxiliary supporting wheels are arranged on both sides below the supporting wheel, and the auxiliary supporting wheels are connected with the supporting wheel through sprockets.

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