A rotary kiln supporting roller device

Abstract

This application relates to a rotary kiln supporting roller device, including supporting rollers. At both ends of each supporting roller, supporting roller shafts are integrally formed. At both ends of each supporting roller, a heat insulation box is provided. A bearing is installed in the heat insulation box. Each rotating shaft is inserted into the corresponding heat insulation box and cooperates with the bearing. A plurality of oil spoons are fixedly connected to the supporting roller shafts. An oil guiding groove is fixedly connected in the heat insulation box. A first sieve plate is fixedly connected in the heat insulation box. Two bottom plates are also slidably connected in the heat insulation box. The end faces of the two bottom plates close to each other are in contact with each other. Side wall baffles are fixedly connected to the side walls of the bottom plates on both sides of the first sieve plate. End baffles are fixedly connected to the end faces of the two bottom plates away from each other. A scraper is slidably connected to each bottom plate. The bottom of the scraper is in contact with the first sieve plate. A driving assembly for driving the two bottom plates to move away from each other is provided in the heat insulation box. This application has the effect of reducing the frequency of operators replacing the oil of the supporting rollers.

Description

Technical Field

[0001] The present application relates to the field of rotary kilns, and in particular to a rotary kiln supporting wheel device. Background Art

[0002] Reference Figure 1 and Figure 2 The supporting roller 1 device supports the rotary kiln. The supporting roller 1 device includes a supporting roller 1. A supporting roller shaft 11 is integrally formed on both end surfaces of the supporting roller 1. A heat insulation box 2 is provided on both sides of the supporting roller 1. A bearing 12 is installed in the heat insulation box 2. Each supporting roller shaft 11 is inserted into the corresponding heat insulation box 2 and cooperates with the corresponding bearing 12. The heat insulation box 2 is filled with supporting roller oil. Two oil spoons 3 are fixedly connected to the end of the supporting roller shaft 11 away from the supporting roller 1. An inclined oil guide groove 31 is also fixedly connected to the heat insulation box 2. The length direction of the oil guide groove 31 is arranged along the axial direction of the supporting roller 1, and the end of the oil guide groove 31 close to the supporting roller 1 is lower. When the supporting roller 1 rotates, the supporting roller shaft 11 and the oil spoon 3 are driven to rotate, so that the oil spoon 3 scoops the supporting roller oil at the bottom of the heat insulation box 2 onto the oil guide groove 31. The supporting roller oil flows along the oil guide groove 31 and finally falls on the supporting roller shaft 11 to lubricate the supporting roller shaft 11 and the bearing 12.

[0003] Since the rotary kiln is usually in an open-air environment, dust and other debris from the outside may enter the insulation box. The debris entering the insulation box is mixed with the roller oil, which will reduce the lubricating effect of the roller oil, causing the operator to frequently replace the roller oil, resulting in a waste of resources. Summary of the invention

[0004] In order to reduce the frequency of operators replacing the supporting roller oil, the present application provides a rotary kiln supporting roller device.

[0005] The rotary kiln supporting wheel device provided in the present application adopts the following technical solution:

[0006] A rotary kiln supporting roller device includes a supporting roller. At both ends of the supporting roller, supporting roller shafts are integrally formed. At both ends of the supporting roller, there is an insulating box. A bearing is installed in the insulating box. Each rotating shaft is inserted into the corresponding insulating box and cooperates with the bearing. A plurality of oil scoops are fixedly connected to the end faces of the supporting roller shafts. The oil scoops are located in the insulating box. A oil guiding groove is fixedly connected in the insulating box. The oil guiding groove is located above the supporting roller shaft. A first sieve plate is fixedly connected in the insulating box. The axial direction of the first sieve plate is arranged along the axial direction of the supporting roller shaft. Two bottom plates are also slidably connected in the insulating box. The bottom plates are coaxially arranged with the first sieve plate. The end faces of the two bottom plates close to each other are in contact. Side wall baffles are fixedly connected to the side walls of the bottom plates on both sides of the first sieve plate. End baffles are fixedly connected to the end faces of the two bottom plates far from each other. The side wall baffles are fixedly connected to the end baffles. And the upper surfaces of the side wall baffles and the end baffles are higher than the upper surface of the bottom plate. The first sieve plate is located above the two bottom plates and is located in the space surrounded by the side wall baffles and the end baffles. A scraper is slidably connected to each bottom plate. The scraper slides along the height direction of the side wall baffle. The scraper is located at one end of the bottom plate close to the other bottom plate. The bottom of the scraper is in contact with the first sieve plate. A driving component for driving the two bottom plates to move away from each other is arranged in the insulating box.

[0007] By adopting the above technical solution, the rotation of the supporting roller drives the rotation of the supporting roller shaft and the oil scoops, so that the oil scoops scoop up the supporting roller oil at the bottom of the insulating box to the oil guiding groove. The supporting roller oil flows along the oil guiding groove to the supporting roller shaft and the bearing, and then the supporting roller oil falls onto the first sieve plate. The first sieve plate filters the supporting roller oil, reducing the situation that the supporting roller oil contains impurities. The supporting roller oil flows through the sieve holes of the first sieve plate to the two bottom plates and is stored on the bottom plates.

[0008] As the supporting roller oil on the bottom plates gradually increases, the driving component works to drive the two bottom plates to move away from each other, so that the side walls of the two bottom plates close to each other are separated from contact. The supporting roller oil on the bottom plates can flow to the bottom of the insulating box along the gap between the two bottom plates. When the two bottom plates move away from each other, they also drive the scrapers to move, so that the two scrapers also move away from each other. The movement of the scrapers scrapes the impurities accumulated in the middle of the first sieve plate to both ends of the scrapers, reducing the situation that the first sieve plate is blocked due to the accumulation of impurities in the middle of the first sieve plate, enabling the first sieve plate to better filter the supporting roller oil, thereby reducing the impurities in the supporting roller oil at the bottom of the insulating box and reducing the frequency of operators replacing the supporting roller oil.

[0009] Optionally, the driving assembly includes a driving block fixedly connected in the heat insulation box. The driving block is located below the bottom plate. Each of the two bottom plates contacts one of the side walls of the driving block. The bottoms of the two side walls of the driving block in contact with the bottom plate are arranged in a direction away from each other, and the upper parts of the two side walls of the driving block in contact with the bottom plate are arranged in a direction close to each other. The driving assembly further includes a guiding member for guiding the bottom plate. The guiding member enables the bottom plate to move along the height direction of the side wall baffle and also enables the bottom plate to move along the circumferential direction of the supporting roller shaft.

[0010] By adopting the above technical solution, when the supporting roller oil falls onto the bottom plate, the supporting roller oil accumulates on the bottom plate. As the supporting roller oil on the supporting plate gradually increases, the supporting plate moves downward under the action of the guiding member. While the supporting plate moves downward, the side wall of the driving block in contact with the bottom plate pushes the bottom plate to move, so that the two bottom plates move away from each other under the action of the guiding member, thereby enabling the bottom plate to drive the scraper to scrape the sundries in the middle of the first sieve plate to both ends of the first sieve plate, reducing the situation that the first sieve plate is blocked due to the accumulation of sundries in the middle of the first sieve plate.

[0011] Optionally, the guiding member includes two vertical rods fixedly connected in the heat insulation box. The bottom plate is located between the two vertical rods. The length direction of the vertical rods is arranged along the radial direction of the supporting roller shaft. A chute is provided on each of the side walls of the two vertical rods close to each other. The length direction of the chute is arranged along the length direction of the vertical rod. A slider is slidably connected in the chute. A guiding rod is provided between the two sliders. Both ends of the guiding rod are fixedly connected to the corresponding sliders. The guiding rod is arranged coaxially with the bottom plate. A guiding groove corresponding to the guiding rod is provided on the lower surface of the bottom plate. The guiding rod is inserted into the guiding groove. A return spring is fixedly connected to the upper surface of the slider. The upper end of the return spring is fixedly connected to the upper groove wall of the chute.

[0012] By adopting the above technical solution, as the supporting roller oil on the bottom plate gradually increases, the supporting roller oil presses the bottom plate, the guiding rod and the slider to move downward. The cooperation between the slider and the chute enables the bottom plate to move along the height direction of the heat insulation box. The slider moves downward and stretches the return spring. While the bottom plate moves downward, the driving block pushes the two bottom plates to move. The cooperation between the guiding rod and the guiding groove guides the bottom plate, enabling the bottom plate to move along the circumferential direction of the supporting roller shaft.

[0013] Optionally, a convex block is fixedly connected to each side wall of the scraper close to the side wall baffle. A groove corresponding to the convex block is provided on the side wall baffle. The length direction of the groove is arranged along the height direction of the side wall baffle. The convex block is slidably inserted into the corresponding groove.

[0014] By adopting the above technical solution, during the process of the bottom plate driving the scraper to move, if the distance between the upper surface of the side wall baffle and the upper surface of the first sieve plate changes, the first sieve plate pushes the scraper to move, and the movement of the scraper drives the convex block to move in the groove, so that during the movement of the bottom plate, the scraper can contact the first sieve plate, and the scraper can scrape the sundries in the middle of the first sieve plate to both ends of the first sieve plate.

[0015] Optionally, a pressing member for making the scraper abut against the first sieve plate is provided on the bottom plate.

[0016] By adopting the above technical solution, the pressing member makes the bottom plate abut against the first sieve plate, so that the scraper can better scrape the sundries in the middle of the first sieve plate to the end of the first sieve plate.

[0017] Optionally, the pressing member includes a cross plate located between two opposite side wall baffles. Both side wall baffles are fixedly connected to the cross plate. The cross plate is located above the scraper. A plurality of pressing springs are fixedly connected to the upper surface of the scraper, and the upper ends of the pressing springs are fixedly connected to the cross plate.

[0018] By adopting the above technical solution, when the first sieve plate moves along the height direction of the side wall baffle, the pressing spring deforms accordingly, so that the scraper always abuts against the first sieve plate, and the scraper can better scrape the sundries on the first sieve plate.

[0019] Optionally, a second sieve plate is sleeved on the driving block. The second sieve plate is located at the bottom of the driving block and is fixedly connected to the driving block. The aperture of the sieve holes of the second sieve plate is smaller than the aperture of the sieve holes of the first sieve plate. The second sieve plate is located below the side walls of the two bottom plates close to each other.

[0020] By adopting the above technical solution, when the supporting wheel oil on the bottom plate falls outside the bottom plate, the supporting wheel oil falls on the second sieve plate, and the second sieve plate filters the supporting wheel oil for the second time, further reducing the possibility of sundries in the supporting wheel oil.

[0021] Optionally, a tip is provided on the side of the scraper in contact with the first sieve plate.

[0022] By adopting the above technical solution, the tip enables the scraper to better scrape the sundries on the first sieve plate.

[0023] In summary, the present application includes at least one of the following beneficial technical effects:

[0024] 1. By providing the supporting wheel, the supporting wheel shaft, the bearing, the heat insulation box, the oil ladle, the oil guide groove, the first sieve plate, the bottom plate, the side wall baffle, the end baffle, the scraper and the driving assembly, the first sieve plate can better filter the supporting wheel oil, so that the sundries in the supporting wheel oil at the bottom of the heat insulation box are reduced, and the frequency of the operator replacing the supporting wheel oil is reduced;

[0025] 2. By setting the driving block, the reset spring, the vertical rod and the guiding rod, the bottom plate can be driven to move, so that the scraper can scrape the sundries in the middle of the first sieve plate to the end of the first sieve plate, and the supporting wheel oil on the bottom plate can flow to the bottom of the heat insulation box;

[0026] 3. By setting the cross plate and the pressing spring, the scraper is always in contact with the first sieve plate, and the scraper can better scrape the sundries on the first sieve plate. Description of the Drawings

[0027] Figure 1 is a schematic diagram showing the overall structure of the supporting wheel device in the background art.

[0028] Figure 2 is a cross-sectional view showing the overall structure of the supporting wheel device in the background art.

[0029] Figure 3 is a cross-sectional view showing the overall structure of the supporting wheel device according to the embodiment of the present application.

[0030] Figure 4 is a cross-sectional view showing the overall structure of the scraping assembly according to the embodiment of the present application.

[0031] Figure 5 is a cross-sectional view showing the positional relationship between the scraping assembly and the driving assembly according to the embodiment of the present application.

[0032] Figure 6 is a cross-sectional view showing the overall structure of the guiding member according to the embodiment of the present application.

[0033] Figure 7 is a cross-sectional view showing the overall structure of the pressing member according to the embodiment of the present application.

[0034] Description of the reference numerals: 1, supporting wheel; 11, supporting wheel shaft; 12, bearing; 2, heat insulation box; 3, oil ladle; 31, oil guiding groove; 4, first sieve plate; 41, support rod; 5, scraping assembly; 51, bottom plate; 511, guiding groove; 52, end baffle; 53, side wall baffle; 531, groove; 54, scraper; 541, convex block; 55, pressing member; 551, cross plate; 552, pressing spring; 6, driving assembly; 61, driving block; 62, guiding member; 621, vertical rod; 6211, sliding groove; 622, guiding rod; 623, slider; 64, reset spring; 7, second sieve plate. Detailed Description of the Embodiment

[0035] The following will Figures 3-7 further describe the present application in detail with reference to the

[0036] The embodiment of the present application discloses a rotary kiln supporting wheel device. Refer to Figure 3 And Figure 4, the rotary kiln supporting roller 1 device includes a supporting roller 1. On both end faces of the supporting roller 1, a supporting roller shaft 11 is integrally formed. The supporting roller shaft 11 is coaxially arranged with the supporting roller 1. On both sides of the supporting roller 1, a heat insulation box 2 is provided. A bearing 12 is installed in the heat insulation box 2. Each supporting roller shaft 11 is inserted into the corresponding heat insulation box 2, and the supporting roller shaft 11 is matched with the bearing 12. A oil guide groove 31 is also fixedly connected to the heat insulation box 2. The oil guide groove 31 is located above the supporting roller shaft 11. The length direction of the oil guide groove 31 is arranged along the axial direction of the supporting roller shaft 11. One end of the oil guide groove 31 close to the supporting roller 1 is lower than the end of the oil guide groove 31 far from the supporting roller 1. On the end face of the supporting roller shaft 11 far from the supporting roller 1, two oil scoops 3 are fixedly connected. The two oil scoops 3 are arranged oppositely.

[0037] Refer to Figure 4 And Figure 5 , a first sieve plate 4 is fixedly connected in the heat insulation box 2. The first sieve plate 4 is coaxially arranged with the supporting roller shaft 11. The first sieve plate 4 is located below the supporting roller shaft 11, and the first sieve plate 4 is located below the lower end of the oil guide groove 31. The rotation of the supporting roller 1 drives the rotation of the supporting roller shaft 11, and the rotation of the supporting roller shaft 11 drives the rotation of the oil scoop 3, so that the oil scoop 3 scoops up the supporting roller oil at the bottom of the heat insulation box 2 onto the oil guide groove 31. The oil on the oil guide groove 31 flows onto the supporting roller shaft 11 and the bearing 12, and then the supporting roller oil flows onto the first sieve plate 4. The first sieve plate 4 filters the supporting roller oil flowing down from the supporting roller shaft 11, reducing the impurities mixed in the supporting roller oil, thereby reducing the frequency of the operator replacing the supporting roller oil. In order to enable the first sieve plate 4 to better filter the supporting roller oil, a scraping component 5 for cleaning the impurities on the first sieve plate 4 and a driving component 6 for driving the scraping component 5 to work are also provided in the heat insulation box 2.

[0038] Refer to Figure 5 And Figure 6 , the driving component 6 includes a driving block 61 fixedly connected in the heat insulation box 2. The driving block 61 is located below the first sieve plate 4. The cross section of the driving block 61 is fan-shaped, and the tip of the driving block 61 faces upward. The driving component 6 also includes a guiding member 62. The guiding member 62 is located on one side of the driving block 61. The guiding member 62 includes two vertical rods 621 fixedly connected in the heat insulation box 2. The length direction of the vertical rods 621 is arranged along the radial direction of the supporting roller 1, and the two vertical rods 621 are parallel to each other. On the side walls of the two vertical rods 621 close to each other, a sliding groove 6211 is opened. The length direction of the sliding groove 6211 is arranged along the length direction of the vertical rod 621.

[0039] A slider 623 is slidably inserted into each chute 6211. A guide rod 622 is provided between the two sliders 623. The cross-section of the guide rod 622 is T-shaped. One end of the guide rod 622 is fixedly connected to one of the sliders 623, and the other end of the guide rod 622 is fixedly connected to the other slider 623. The guide rod 622 is coaxial with the idler shaft 11. A support rod 41 is fixedly connected to the middle of the upper surface of the guide rod 622. The first sieve plate 4 is fixedly connected to the support rod 41. A return spring 64 is also fixedly connected to the upper surface of the slider 623. The upper end of the return spring 64 is fixedly connected to the groove wall at the upper end of the chute 6211. When the return spring 64 is in a natural state, the slider 623 is located in the upper part of the chute 6211.

[0040] The scraping assembly 5 includes two bottom plates 51 located below the first sieve plate 4. Guide grooves 511 corresponding to the guide rod 622 are formed on the lower surface of the bottom plate 51. The guide rod 622 is inserted into the guide grooves 511. The bottom plate 51 is coaxial with the idler wheel 1. The first sieve plate 4 is in contact with the upper surface of the bottom plate 51. The driving block 61 is located below the bottom plate 51, and the tip of the driving block 61 is located between the side walls of the two bottom plates 51 that are close to each other. Each bottom plate 51 is in contact with the side wall corresponding to the driving block 61. The two side walls of the driving block 61 in contact with the bottom plate 51 are both inclined, and the bottoms of the two side walls of the driving block 61 in contact with the bottom plate 51 are arranged in a direction away from each other. The support rod 41 penetrates through the bottom plate 51, and the side walls of the bottom plate 51 that are close to each other are in contact with each other.

[0041] End baffles 52 are fixedly connected to the end faces of the two bottom plates 51 that are away from each other. Side wall baffles 53 are fixedly connected to the two side walls of the bottom plate 51. The side wall baffles 53 are fixedly connected to the end baffles 52. The height directions of both the side wall baffles 53 and the end baffles 52 are arranged along the radial direction of the idler wheel 1. The first sieve plate 4 is located in the space surrounded by the side wall baffles 53 and the end baffles 52.

[0042] A scraper 54 is provided on each bottom plate 51. The scraper 54 is located above the first sieve plate 4. The scraper 54 is located on the side of the bottom plate 51 close to the other bottom plate 51. The support rod 41 is located between the two scrapers 54. The length direction of the scraper 54 is arranged along the axial direction of the idler wheel 1. The upper surface of the scraper 54 is lower than the upper surface of the side wall baffle 53. A convex block 541 is fixedly connected to each side wall of the scraper 54 close to the side wall baffle 53. A groove 531 corresponding to the convex block 541 is also formed on the side wall of the side wall baffle 53 close to the scraper 54. The length direction of the groove 531 is arranged along the height direction of the side wall baffle 53. Each convex block 541 is slidably inserted into the corresponding groove 531.

[0043] Refer to Figure 5 And Figure 7, the scraping assembly 5 further includes a pressing member 55 that keeps the scraper 54 in contact with the first sieve plate 4 all the time. The pressing member 55 includes a cross plate 551 fixedly connected between two opposite side wall baffles 53. The cross plate 551 is located above the scraper 54, and the length direction of the cross plate 551 is arranged along the length direction of the scraper 54; a plurality of pressing springs 552 are fixedly connected to the lower surface of the cross plate 551. The plurality of pressing springs 552 are arranged along the length direction of the cross plate 551. One end of the pressing spring 552 away from the cross plate 551 is fixedly connected to the upper surface of the pressing plate, and the pressing spring 552 is in a compressed state.

[0044] When the wheel oil falls from the wheel shaft 11, the wheel oil falls onto the first sieve plate 4. The first sieve plate 4 screens the sundries in the wheel oil, and the sundries remain on the first sieve plate 4. The wheel oil falls through the sieve holes of the first sieve plate 4 onto the two bottom plates 51. The wheel oil falling onto the bottom plates 51 is stored in the space surrounded by the side wall baffles 53 and the end baffles 52; as the weight of the wheel oil on the bottom plates 51 continuously increases, the wheel oil presses the two bottom plates 51 to move downward. The movement of the bottom plates 51 drives the guide rods 622 and the sliders 623 to move downward. The slider 623 moves along the chute 6211 and stretches the return spring 64.

[0045] During the downward movement of the guide rods 622 and the bottom plates 51, the inclined side walls of the driving blocks 61 push the bottom plates 51 to move, causing the two bottom plates 51 to move away from each other, so that the wheel oil on the bottom plates 51 flows to the bottom of the heat insulation box 2 along the gap between the two bottom plates 51; during the process of the two bottom plates 51 moving away from each other, the movement of the bottom plates 51 drives the scraper 54 to move, so that the scraper 54 scrapes the sundries accumulated in the middle of the first filter plate to both ends of the first sieve plate 4, reducing the situation that the first sieve plate 4 is blocked due to the accumulation of sundries in the middle of the first sieve plate 4, and enabling the first sieve plate 4 to filter the wheel oil better.

[0046] During the movement of the scraper 54, as the scraper 54 moves along the height direction of the side wall baffle 53, the movement of the scraper 54 drives the convex block 541 to slide along the groove 531, so that the distance between the convex block 541 and the cross plate 551 is adjusted with the movement of the scraper 54. During this process, the pressing spring 552 is always in a compressed state, so that the scraper 54 is always in contact with the first sieve plate 4, enabling the scraper 54 to scrape the sundries in the middle of the first sieve plate 4 to both ends of the first sieve plate 4; in order to make the effect of the scraper 54 scraping the sundries better, a tip is provided on the side of the scraper 54 in contact with the first sieve plate 4.

[0047] As the supporting roller oil on the bottom plate 51 gradually drops outside the bottom plate 51, when the gravity of the supporting roller oil on the bottom plate 51 is less than the elastic force generated by the restoration of the deformation of the return spring 64, the return spring 64 restores its deformation and pulls the slider 623, the guide rod 622, and the bottom plate 51 upward. During the movement of the bottom plate 51, the bottom plate 51 moves in the direction of approaching each other due to gravity. When the bottom plate 51 moves above the driving block 61, the end walls of the two bottom plates 51 that approach each other are in contact with each other, and the bottom plate 51 and the scraping plate 54 return to the initial position.

[0048] To further reduce the impurities contained in the supporting roller oil, a second sieve plate 7 is sleeved on the driving block 61. The length direction of the second sieve plate 7 is arranged along the width direction of the first sieve plate 4. The second sieve plate 7 is fixedly connected to the driving block 61, and the aperture of the sieve holes of the second sieve plate 7 is smaller than the aperture of the sieve holes of the first sieve plate 4. When the supporting roller oil on the bottom plate 51 drops outside the bottom plate 51, the supporting roller oil on the bottom plate 51 drops onto the second sieve plate 7, and the second sieve plate 7 filters the supporting roller oil again, further reducing the situation of impurities contained in the supporting roller oil.

[0049] The implementation principle of a rotary kiln supporting roller device in an embodiment of the present application is as follows: The rotation of the supporting roller 1 drives the rotation of the supporting roller shaft 11 and the oil ladle 3. The rotation of the oil ladle 3 scoops the supporting roller oil at the bottom of the heat insulation box 2 into the oil guiding groove 31. The supporting roller oil flows along the oil guiding groove 31 onto the supporting roller shaft 11 and the bearing 12, and then the supporting roller oil drops onto the first sieve plate 4. The first sieve plate 4 filters the supporting roller oil for the first time. The filtered supporting roller oil is stored on the bottom plate 51. As the supporting roller oil on the bottom plate 51 gradually increases, the supporting roller oil presses the bottom plate 51 and the guide rod 622 downward. While the two bottom plates 51 move downward, they drive the two scraping plates 54 to move away from each other. The movement of the scraping plates 54 scrapes the impurities in the middle of the first sieve plate 4 to both ends of the first sieve plate 4. At the same time, the supporting roller oil on the bottom plate 51 flows through the gap between the two bottom plates 51 onto the second sieve plate 7, and the second sieve plate 7 screens the supporting roller oil again.

[0050] As the supporting roller oil flows out, the return spring 64 restores its deformation and pulls the guide rod 622 and the bottom plate 51 upward. While the two bottom plates 51 move upward, they move in the direction of approaching each other. When the return spring 64 completely restores its deformation, the bottom plate 51 and the scraping plate 54 both return to the initial position, and the filtration of the supporting roller oil can continue.

[0051] The above are all the preferred embodiments of the present application, and the protection scope of the present application is not limited accordingly. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. A rotary kiln supporting roller device, comprising a supporting roller (1), both ends of the supporting roller (1) are integrally formed with supporting roller shafts (11), a heat insulation box (2) is provided at both ends of the supporting roller (1), a bearing (12) is installed in the heat insulation box (2), each supporting roller shaft (11) is inserted into the corresponding heat insulation box (2) and cooperates with the bearing (12), a plurality of oil spoons (3) are fixedly connected to the end surface of the supporting roller shaft (11), the oil spoons (3) are located in the heat insulation box (2), a oil guide groove (31) is fixedly connected in the heat insulation box (2), the oil guide groove (31) is located above the supporting roller shaft (11), and it is characterized in that: A first sieve plate (4) is fixedly connected in the heat insulation box (2), the axial direction of the first sieve plate (4) is arranged along the axial direction of the supporting wheel shaft (11), two bottom plates (51) are also slidably connected in the heat insulation box (2), the bottom plates (51) and the first sieve plate (4) are coaxially arranged, the end faces of the two bottom plates (51) close to each other are mutually attached, side wall baffles (53) are fixedly connected to the side walls of the two bottom plates (51) on both sides of the first sieve plate (4), an end baffle (52) is fixedly connected to each of the end faces of the two bottom plates (51) far from each other, the side wall baffle (53) is fixedly connected to the end baffle (52), and the upper surfaces of the side wall baffle (53) and the end baffle (52) are both higher than the upper surface of the bottom plate (51). The first sieve plate (4) is located above the two bottom plates (51) and is located in the space surrounded by the side wall baffle (53) and the end baffle (52). A scraper (54) is slidably connected to each bottom plate (51), the scraper (54) slides along the height direction of the side wall baffle (53), the scraper (54) is located at one end of the bottom plate (51) close to the other bottom plate (51), and the bottom of the scraper (54) is in contact with the first sieve plate (4). A driving component (6) for driving the two bottom plates (51) to move away from each other is arranged in the heat insulation box (2). The driving component (6) includes a driving block (61) fixedly connected in the heat insulation box (2). The driving block (61) is located below the bottom plate (51), each of the two bottom plates (51) is in contact with one of the side walls of the driving block (61), the bottoms of the two side walls of the driving block (61) in contact with the bottom plate (51) are arranged in a direction away from each other, and the upper parts of the two side walls of the driving block (61) in contact with the bottom plate (51) are arranged in a direction close to each other. The driving component (6) further includes a guiding component (62) for guiding the bottom plate (51), and the guiding component (62) enables the bottom plate (51) to move along the height direction of the side wall baffle (53) and also enables the bottom plate (51) to move along the circumferential direction of the supporting wheel shaft (11). The guide member (62) includes two vertical rods (621) fixedly connected to the heat insulation box (2). The bottom plate (51) is located between the two vertical rods (621). The length direction of the vertical rods (621) is arranged along the radial direction of the supporting roller shaft (11). A chute (6211) is formed on the side wall of each of the two vertical rods (621) close to each other. The length direction of the chute (6211) is arranged along the length direction of the vertical rod (621). A slider (623) is slidably connected in the chute (6211). A guide rod (622) is provided between the two sliders (623). Both ends of the guide rod (622) are fixedly connected to the corresponding slider (623). The guide rod (622) and the bottom plate (51) are arranged coaxially. A guide groove (511) corresponding to the guide rod (622) is formed on the lower surface of the bottom plate (51). The guide rod (622) is inserted into the guide groove (511). A return spring (64) is fixedly connected to the upper surface of the slider (623). The upper end of the return spring (64) is fixedly connected to the upper groove wall of the chute (6211). A convex block (541) is fixedly connected to the side wall of the scraper (54) close to the side wall baffle (53). A groove (531) corresponding to the convex block (541) is formed on the side wall baffle (53). The length direction of the groove (531) is arranged along the height direction of the side wall baffle (53). The convex block (541) is slidably inserted into the corresponding groove (531).

2. The rotary kiln supporting roller device according to claim 1, wherein: A pressing member (55) for making the scraper (54) abut against the first sieve plate (4) is provided on the bottom plate (51).

3. The rotary kiln supporting roller device according to claim 2, characterized in that: The pressing member (55) includes a cross plate (551) located between two opposite side wall baffles (53). Both side wall baffles (53) are fixedly connected to the cross plate (551). The cross plate (551) is located above the scraper (54). A plurality of pressing springs (552) are fixedly connected to the upper surface of the scraper (54). The upper ends of the pressing springs (552) are fixedly connected to the cross plate (551).

4. A rotary kiln supporting roller device according to claim 1, characterized in that: A second sieve plate (7) is sleeved on the driving block (61). The second sieve plate (7) is located at the bottom of the driving block (61). The second sieve plate (7) is fixedly connected to the driving block (61). The aperture of the sieve holes of the second sieve plate (7) is smaller than that of the first sieve plate (4). The second sieve plate (7) is located below the side walls of the two bottom plates (51) close to each other.

5. A rotary kiln supporting roller device according to claim 1, characterized in that: A tip is provided on the side of the scraper (54) in contact with the first sieve plate (4).

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