Graphite lubrication device for rotary kiln support rollers

Abstract

This utility model discloses a graphite lubrication device for rotary kiln support rollers, belonging to the field of rotary kiln support roller lubrication technology, and is mainly used for lubricating rotary kiln support rollers. The technical problem to be solved by this utility model is to provide a graphite lubrication device for rotary kiln support rollers, including a base, support rollers mounted on the base, and a support frame. The support frame is equipped with a clamping device for controlling the contact between graphite blocks and the support rollers. The clamping device includes a limiting rod disposed between the support frames, with a guide rod slidably passing through the limiting rod, the lower end of which connects with the graphite block. A compression spring is sleeved on the guide rod, with one end abutting the limiting rod and the other end abutting the graphite block. The support frame is equipped with a graphite placement box, in which the graphite blocks are slidably placed. The graphite placement box has an upper opening and a lower opening. The thrust generated by the compression spring during its compression and relaxation process drives the graphite blocks to slide downwards and abut against the support rollers, ensuring that the graphite blocks are always in contact with the support rollers, forming a lubricating film on the support rollers to guarantee the lubrication effect.

Description

Technical Field

[0001] This utility model relates to the field of rotary kiln support roller lubrication technology, and in particular to a graphite lubrication device for rotary kiln support rollers. Background Technology

[0002] A rotary kiln is a high-temperature calcining device widely used in various industrial fields. Its core function is to uniformly heat and react materials through a rotating cylinder. The support rollers of the rotary kiln are important components that support the cylinder and guide its rotation. Figure 1 As shown, rotary kiln support rollers are typically installed on the rotary kiln foundation, with the tire sleeved on the outside of the kiln body. The support rollers contact the tire, supporting the weight of the entire rotary kiln and guiding the kiln body to rotate in a predetermined direction. To reduce friction between the support rollers and the tire and extend their service life, a lubrication device is installed to lubricate the support rollers. Considering that chemical smelting often operates in high-temperature and high-load environments, graphite is often used as a lubricating material for the support rollers. However, existing graphite relies on its own weight to contact the support rollers, generating graphite powder through friction, which forms a lubricating film on the support rollers to reduce frictional resistance. But as the weight of graphite gradually decreases during use, relying solely on its own weight to form a lubricating film on the support roller surface becomes ineffective and can easily cause deep indentations on the support rollers and kiln body movement. Utility Model Content

[0003] The technical problem to be solved by this utility model is to provide a graphite lubrication device for rotary kiln support rollers, which is mainly used for lubrication of rotary kiln support rollers, so as to control the graphite blocks to always keep in contact with the support rollers, form a lubricating film on the support rollers, and ensure the lubrication effect.

[0004] This utility model discloses a graphite lubrication device for a rotary kiln support roller, comprising a foundation for mounting the rotary kiln and a support roller mounted on the foundation. A graphite block with one side connected to the support roller is positioned above the support roller. The device also includes a bracket mounted on the foundation, with a clamping device on the bracket for controlling the contact between the graphite block and the support roller. The clamping device includes a limiting rod and a guide rod. The limiting rod is positioned between two brackets and has a through hole for the guide rod to pass through. The guide rod is slidably connected to the limiting rod, and its lower end is connected to the graphite block. A clamping spring, with one end abutting the bottom of the limiting rod and the other end abutting the graphite block, is fitted on the guide rod. A graphite placement box is located above the support roller at one end of the bracket. The graphite block is slidably positioned within the graphite placement box. The graphite placement box has a lower opening on the side near the support roller for contact between the graphite block and the support roller, and an upper opening on the side near the clamping device for contact between the guide rod and the graphite block.

[0005] Furthermore, the clamping device also includes a pressure plate disposed at the lower end of the guide rod and connected to the graphite block, and the clamping spring abuts against the upper surface of the pressure plate to drive the pressure plate to slide up and down along the graphite placement box.

[0006] As a preferred embodiment, the lower end of the guide rod is hinged to the pressure plate.

[0007] As a preferred embodiment, at least two guide rods are provided, and the at least two guide rods are evenly distributed along the length direction of the limiting rod.

[0008] Furthermore, the guide rod is also provided with a limiting member, the diameter of which is larger than the diameter of the through hole. The limiting member is located at the end of the guide rod away from the compression spring and above the limiting rod to limit the sliding distance of the guide rod.

[0009] As a preferred embodiment, the limiting element is a bolt, and the guide rod is provided with a threaded section adapted to the bolt, with the bolt threaded on the guide rod.

[0010] As a preferred embodiment, the limiting member further includes a washer sleeved on the guide rod, the washer being disposed between the limiting rod and the bolt.

[0011] As a preferred embodiment, the graphite placement box has an observation hole on its side for observing the graphite block.

[0012] The beneficial effects of this utility model are as follows: By setting a clamping device, the graphite block is placed in the graphite placement box, so that the graphite block can only slide up and down in the graphite placement box. A guide rod and a clamping spring are set above the graphite block. The clamping spring is sleeved on the guide rod to ensure that the clamping spring release process is always along the direction of the guide rod. During the use of the graphite block, the wear of the graphite block causes the volume of the graphite block to decrease. At this time, the clamping spring that abuts against the graphite block changes from a compressed state to a relaxed state. The thrust generated by this spring drives the graphite block to slide down and abut against the support roller, ensuring that the graphite block is always in contact with the support roller and forming a lubricating film on the support roller to ensure the lubrication effect. Attached Figure Description

[0013] Figure 1 : Schematic diagram of the installation of the support rollers and the rotary kiln;

[0014] Figure 2 This utility model provides an installation diagram of the graphite lubrication device for the rotary kiln support rollers.

[0015] Reference numerals: 1-Foundation; 11-Supporting roller; 12-Cylinder body; 13-Tire; 2-Graphite block; 21-Graphite placement box; 211-Upper opening; 212-Lower opening; 213-Observation hole; 3-Pressure device; 31-Bracket; 311-Mounting bracket; 32-Limiting rod; 321-Through hole; 33-Guide rod; 34-Pressure spring; 35-Pressure plate; 36-Limiting component; 361-Bolt; 362-Washer. Detailed Implementation

[0016] The present invention will be further described below.

[0017] This utility model provides a graphite lubrication device for rotary kiln support rollers, mainly used for lubricating rotary kiln support rollers. It includes a base 1 for mounting the rotary kiln and support rollers 11 mounted on the base 1. A graphite block 2 is positioned above the support roller 11, with one side connected to the support roller 11. It also includes a bracket 31 mounted on the base 1. The bracket 31 is equipped with a clamping device 3 for controlling the contact between the graphite block 2 and the support roller 11. The clamping device 3 includes a limiting rod 32 and a guide rod 33. The limiting rod 32 is positioned between two brackets 31 and has a through hole 321 for the guide rod 33 to pass through. The guide rod 33 and the limiting rod... 32. A sliding connection is made, and the lower end of the guide rod 33 is connected to the graphite block 2. A compression spring 34 is sleeved on the guide rod 33, with one end abutting against the bottom of the limiting rod 32 and the other end abutting against the graphite block 2. The bracket 31 is provided with a graphite placement box 21 located above the support roller 11 at one end. The graphite block 2 is slidably placed in the graphite placement box 21. The graphite placement box 21 has a lower opening 212 on the side near the support roller 11 for the graphite block 2 to contact the support roller 11. The graphite placement box 21 has an upper opening 211 on the side near the pressing device 3 for the guide rod 33 to contact the graphite block 2.

[0018] like Figure 1 As shown, the graphite lubrication device for the rotary kiln support rollers provided by this utility model includes a base 1 for mounting the rotary kiln and support rollers 11 mounted on the base 1, as follows: Figure 2As shown, brackets 31 are installed on the foundation 1 via bolts 361 or welding on both sides of the support roller 11. These brackets 31 are mounted on both sides of the support roller 11 and include a clamping device 3 located above the support roller 11. The clamping device 3 includes a limiting rod 32 positioned between the two brackets 31. A guide rod 33 slides through the limiting rod 32 to ensure the direction of movement of the guide rod 33 and prevent it from shifting as the graphite block 2 moves downwards. The lower end of the guide rod 33 abuts against the graphite block 2. A compression spring 34, with one end abutting against the bottom of the limiting rod 32 and the other end abutting against the graphite block 2, is also fitted onto the guide rod 33. Initially, the graphite block 2 is in a compressed state. As the graphite block 2 wears down during use, its volume decreases, reducing the pressure exerted by the graphite block 2 on the compression spring 34. This causes the compression spring 34 to gradually loosen, pushing the graphite block 2 downwards so that it remains in contact with the support roller 11. When the graphite block 2 moves downwards, the guide rod 33 moves downwards along with it, ensuring that the compression spring 34, sleeved on the guide rod 33, remains between the limiting rod 32 and the graphite block 2. This ensures that the compression spring 34 presses against the graphite block 2, keeping it in contact with the support roller 11 and providing lubrication. To limit the movement of the graphite block 2... The range of motion ensures that the graphite block 2 is always positioned above the support roller 11. The support 31 has a graphite placement box 21 located above the support roller 11 at one end near the support roller 11. Specifically, the graphite placement box 21 is mounted above the support roller 11 via a mounting bracket 311 on the support 31. The mounting bracket 311 and the support 31 can be connected by welding or bolts 361, and the graphite placement box 21 and the mounting bracket 311 can also be connected by welding, bolts 361, or tenon joints. The graphite block 2 is slidably positioned inside the graphite placement box 21. A guide rod 33 is provided above the graphite placement box 21 to guide the graphite block 2. The upper opening 211 is for contact, and the lower opening 212 is provided below the graphite placement box 21 for the graphite block 2 to contact the support roller 11. By restricting the graphite block 2 around the graphite placement box 21, the graphite block 2 can only slide up and down inside the graphite placement box 21. As the graphite block 2 wears down during use, its volume decreases. At this time, the compression spring 34 that abuts against the graphite block 2 changes from a compressed state to a relaxed state. The thrust generated by this spring drives the graphite block 2 to slide down and abut against the support roller 11, ensuring that the graphite block 2 is always in contact with the support roller 11 and forming a lubricating film on the support roller 11 to ensure the lubrication effect.

[0019] To prevent the compression spring 34 and guide rod 33 from directly contacting the graphite block 2, which could lead to uneven stress on the upper surface of the graphite block 2 and subsequent cracking, such as... Figure 2As shown, the clamping device 3 also includes a pressure plate 35 disposed at the lower end of the guide rod 33 and connected to the graphite block 2. The clamping spring 34 abuts against the upper surface of the pressure plate 35 to drive the pressure plate 35 to slide up and down along the graphite placement box 21. By setting the pressure plate 35 at the lower end of the guide rod 33 and connected to the graphite block 2, the downward thrust generated by the clamping spring 34 is evenly transmitted to the graphite block 2 using the pressure plate 35, effectively preventing the graphite block 2 from cracking due to uneven force. Furthermore, the pressure plate 35 ensures uniform downward pressure on the graphite block 2. Further, to ensure that the pressure plate 35 can be finely adjusted at a certain angle according to the wear condition of the graphite block 2, such as... Figure 2 As shown, the lower end of the guide rod 33 is hinged to the pressure plate 35. Specifically, a hinge seat can be provided on the pressure plate 35 to facilitate the installation of the guide rod 33, or an installation groove can be opened on the pressure plate 35, and the guide rod 33 is hinged in the installation groove. Furthermore, to ensure that the guide rod 33 presses down on the pressure plate 35 evenly, at least two guide rods 33 are provided, and at least two guide rods 33 are evenly distributed along the length direction of the limiting rod 32. By increasing the number of guide rods 33 and evenly distributing them on the limiting rod 32, when the compression spring 34 sleeved on the guide rod 33 presses down on the pressure plate 35, the pressure plate 35 can be pressed down evenly, reducing the bias pressure.

[0020] To prevent the guide rod 33 from slipping off the limit rod 32 as the graphite block 2 moves down excessively, thus failing to provide guidance for the compression spring 34 and causing the compression spring 34 to shift during the relaxation process, resulting in the graphite block 2 not contacting the support roller 11 to lubricate it, such as... Figure 2As shown, the guide rod 33 is also provided with a limiting member 36. The diameter of the limiting member 36 is larger than the diameter of the through hole 321. The limiting member 36 is located at the end of the guide rod 33 away from the compression spring 34 and above the limiting rod 321 to limit the sliding distance of the guide rod 33. By providing the limiting member 36 on the guide rod 33, the downward sliding distance of the guide rod 33 is limited, ensuring the normal use of the entire pressing device 3. The limiting member 36 can be a clamp with a size larger than the through hole 321, clamping the clamp on the guide rod 33 and moving down with the guide rod 33 to the point where it is parallel to the through hole 321. When the top of the limiting rod 32 contacts the guide rod 33, the guide rod 33 cannot continue to move downward, thereby limiting the downward movement distance of the guide rod 33 and ensuring that the guide rod 33 will not slip out of the limiting rod 32 when it moves downward with the graphite block 2. The limiting member 36 can also be a block structure surrounding the guide rod 33, such as an iron block or a wooden block. It only needs to be fixed on the guide rod 33, and the diameter of the block structure is larger than the diameter of the through hole 321 to effectively limit the downward movement distance of the guide rod 33. The block structure can be fixed on the guide rod 33 by binding with wire, welding or using screws. As a preferred method, to save costs, the limiting element 36 is a bolt 361. The guide rod 33 has a threaded section adapted to the bolt 361. The bolt 361 is threaded onto the guide rod 33. Using the bolt 361 as the limiting element 36, and with a threaded section on the guide rod 33 adapted to the bolt 361, the bolt 361, with its diameter larger than the diameter of the through hole 321 on the limiting rod 32 for the guide rod 33 to pass through, limits the downward movement distance of the guide rod 33. Furthermore, the threaded bolt 361 can be adjusted in position according to the actual size of the graphite block 2 and the required downward movement distance to accommodate graphite blocks 2 of different sizes, ensuring that the graphite block 2 is always in contact with the support roller 11, guaranteeing lubrication of the support roller 11. To reduce wear on the limiting rod 32 when the bolt 361 contacts the limiting rod 32, such as... Figure 2 As shown, the limiting member 36 also includes a washer 362 sleeved on the guide rod 33. The washer 362 is disposed between the limiting rod 32 and the bolt 361. By adding a washer 362 between the top surface of the limiting rod 32 and the bolt 361, the washer 362 reduces the impact wear of the bolt 361 on the limiting rod 32 after the guide rod 33 moves down. At the same time, it further ensures that the bolt 361 can always be located above the limiting rod 32 to limit the downward movement distance of the guide rod 33, and avoid excessive downward movement that would cause the guide rod 33 to slip off and fail to press the graphite block 2.

[0021] To facilitate monitoring the usage level of graphite block 2 and ensure timely replacement of graphite block 2, thus guaranteeing proper lubrication of the support roller 11, such as... Figure 2As shown, the graphite placement box 21 has an observation hole 213 on its side for observing the graphite block 2. The observation hole 213 can be opened on the side of the graphite placement box 21 according to the replacement conditions of the graphite block 2. In order to avoid the graphite block 2 being worn differently on the left and right sides during use, resulting in errors in the observation of the graphite block 2's usage status through the observation hole 213, multiple observation holes 213 are provided and located at the same height to reduce the occurrence of observation errors. In order to facilitate real-time observation of the usage status of the graphite block 2, the observation hole 213 can also be set along the height direction of the graphite placement box 21.

Claims

1. A graphite lubrication device for a rotary kiln support roller, comprising a base (1) for mounting the rotary kiln and a support roller (11) disposed on the base (1), wherein a graphite block (2) is disposed above the support roller (11) with one side connected to the support roller (11), characterized in that: It also includes a bracket (31) set on the foundation (1), the bracket (31) is provided with a clamping device (3) for controlling the graphite block (2) to abut against the support roller (11), the clamping device (3) includes a limiting rod (32) and a guide rod (33), the limiting rod (32) is set between the two brackets (31), the limiting rod (32) is provided with a through hole (321) for the guide rod (33) to pass through, the guide rod (33) is slidably connected to the limiting rod (32), the lower end of the guide rod (33) is connected to the graphite block (2), and a clamping spring (34) with one end abutting against the bottom of the limiting rod (32) and the other end abutting against the graphite block (2) is sleeved on the guide rod (33). The bracket (31) has a graphite placement box (21) located above the support roller (11) at one end. The graphite block (2) is slidably placed in the graphite placement box (21). The graphite placement box (21) has a lower opening (212) on the side near the support roller (11) for the graphite block (2) to contact the support roller (11). The graphite placement box (21) has an upper opening (211) on the side near the pressing device (3) for the guide rod (33) to contact the graphite block (2).

2. The graphite lubrication device for a rotary kiln support roller as described in claim 1, characterized in that: The clamping device (3) also includes a pressure plate (35) disposed at the lower end of the guide rod (33) and connected to the graphite block (2). The clamping spring (34) abuts against the upper surface of the pressure plate (35) to drive the pressure plate (35) to slide up and down along the graphite placement box (21).

3. A graphite lubricating arrangement for a roller of a rotary kiln as claimed in claim 2, characterised in that: The lower end of the guide rod (33) is hinged to the pressure plate (35).

4. A graphite lubricating arrangement for a roller of a rotary kiln as claimed in claim 2, characterised in that: At least two guide rods (33) are provided, and at least two guide rods (33) are evenly distributed along the length direction of the limiting rod (32).

5. A graphite lubricating system for a roller of a rotary kiln as defined in claim 1, wherein: The guide rod (33) is also provided with a limiting member (36), the diameter of which is larger than the diameter of the through hole (321). The limiting member (36) is located at the end of the guide rod (33) away from the compression spring (34) and above the limiting rod (32) to limit the sliding distance of the guide rod (33).

6. A graphite lubricating arrangement for a roller of a rotary kiln as claimed in claim 5 wherein: The limiting member (36) is a bolt (361), and the guide rod (33) is provided with a threaded section that is compatible with the bolt (361). The bolt (361) is threaded on the guide rod (33).

7. A graphite lubricating arrangement for a roller of a rotary kiln as claimed in claim 6 wherein: The limiting member (36) also includes a gasket (362) sleeved on the guide rod (33), and the gasket (362) is disposed between the limiting rod (32) and the bolt (361).

8. A graphite lubricating system for a roller of a rotary kiln as defined in claim 1, wherein: The graphite placement box (21) has an observation hole (213) on its side for observing the graphite block (2).

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