A rotary kiln with a heavy hammer friction plate sealing device

Abstract

The invention discloses a rotary kiln with a heavy hammer friction plate sealing device in the technical field of rotary kiln sealing, comprising a base, a plurality of support seats, a mounting plate, a kiln barrel and a feeding barrel; during the operation of the rotary kiln, the invention utilizes a plurality of first static friction plates, a plurality of second static friction plates and a plurality of dynamic friction plates to perform combined mounting and sealing; when the first static friction plates, the second static friction plates and the dynamic friction plates are worn, only the friction plates with more serious wear need to be disassembled and replaced; and when the kiln barrel rotates to generate axial expansion, a fixed ring slides on the surface of the sleeve under the action of a counterweight block and a pulling rope, so that the first static friction plates and the second static friction plates can always be closely fitted with the dynamic friction plates; when the kiln barrel rotates to generate radial swing, the fixed ring moves within a certain range with the kiln barrel, so that the fixed ring can maintain fit with the end of the hopper.

Description

Technical Field

[0001] The invention relates to the technical field of rotary kiln sealing, in particular to a rotary kiln with a heavy hammer friction plate type sealing device. Background Art

[0002] At present, many materials in China are produced by rotary kilns, such as cement, magnesium oxide, lime, etc. The traditional rotary kiln port is connected to the discharge port through a bellows expansion joint, a rubber sleeve or a sealing valve plate. Under heavy load and long-term operation, the traditional seal will highlight two problems: the first is that it is difficult to fully absorb the expansion of the kiln barrel in both the axial and radial directions; the second is the problem of leakage caused by gaps in the deformation of the barrel; the reason for this is that on the one hand, the kiln barrel expands axially due to thermal expansion during high-temperature production and the barrel swings radially when the kiln is running; on the other hand, the end face of the kiln barrel is slightly deformed due to the gravity of the material and the deadweight of the shell. When the kiln barrel rotates, the end face of the barrel is difficult to fit tightly with the seal, and local contact surfaces are squeezed or gaps are generated. The seal is easily damaged under continuous squeezing, and fine particles in the material leak out through the gaps at the joints. Under long-term operation, the gaps at the joints will gradually increase, and the leakage phenomenon will form a vicious cycle. In serious cases, the kiln will be stopped. Summary of the invention

[0003] The object of the present invention is to provide a rotary kiln with a heavy hammer friction plate sealing device to solve the problems of expansion displacement absorption and material leakage at the connection during the operation of the rotary kiln proposed in the above background technology, thereby ensuring the sealing effect of the expansion joint and improving the operation rate of the rotary kiln.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a rotary kiln with a heavy hammer friction plate sealing device, comprising a base, a plurality of support seats, a mounting plate, a kiln barrel and a feeding barrel, the base is equipped with a mounting plate, a feeding barrel and a plurality of support seats, the kiln barrel is tilted and rotatably connected to the plurality of support seats, a feeding port and a discharging port are respectively provided at both ends of the kiln barrel, the height of the feeding port is higher than the height of the discharging port, the mounting plate is close to one side of the feeding port, the feeding barrel is located at one side of the feeding port, and further comprises:

[0005] A driving mechanism, used for driving the kiln shell to rotate;

[0006] The protection mechanism is used to protect the gap between the feeding tube and the kiln body to prevent material leakage;

[0007] A drainage mechanism is used to drain the material at the port of the kiln barrel into the kiln barrel;

[0008] The heavy hammer sealing mechanism is used to seal between the kiln body and the feeding tube;

[0009] The protection mechanism comprises an extension plate, the extension plate is fixedly connected to the surface of the kiln cylinder, two semicircular hoppers are bolted to the surface of the extension plate, the two hoppers form a ring and extend to the outside of the feeding cylinder;

[0010] The heavy hammer sealing mechanism includes a plurality of dynamic friction plates, which are all bolted to the surface of the hopper away from the kiln cylinder, and are arranged circumferentially. Two semicircular sleeves are fixedly installed on the surface of the feeding cylinder, and a fixing ring is provided on the surface of the sleeve, and a gap is left between the fixing ring and the sleeve. A plurality of first static friction plates arranged circumferentially are bolted to the surface of the fixing ring close to the dynamic friction plate, and the first static friction plate is fitted with the dynamic friction plate. A plurality of fixing buckles arranged at equal angles are fixedly connected to the surface of the fixing ring close to the dynamic friction plate, and a plurality of pulling ropes are fixedly connected to the surface of the fixing buckle, and a plurality of hanging rods are fixedly connected to the surface of the mounting plate, and a rotating wheel is rotatably connected to the bottom of the hanging rod, and a counterweight is fixedly connected to the pulling rope after passing around the rotating wheel.

[0011] As a further solution of the present invention, the driving mechanism includes a driving motor and a gearbox, the driving motor and the gearbox are both fixedly mounted on the surface of the base, the output shaft of the driving motor is connected to the gearbox, a driving gear ring is fixedly connected to the surface of the kiln shell, and the output end of the gearbox is connected to the driving gear ring.

[0012] As a further solution of the present invention, the drainage mechanism includes a plurality of guard irons, which are all bolted to the surface of the extension plate close to the hopper, and are arranged in a circle. The guard irons are bent from the middle position to the side away from the kiln shell to form an arc structure.

[0013] As a further solution of the present invention, a blocking mechanism is provided on one side surface of the weight sealing mechanism, and the blocking mechanism is used to block the gap reserved by the weight sealing mechanism for buffering the radial swing of the kiln cylinder. The blocking mechanism includes an extension ring, and the extension ring is fixedly connected to the surface of the fixed ring on the side away from the dynamic friction plate. A pressure ring is bolted to the surface of the extension ring, and a gap is left between the pressure ring and the surface of the sleeve. A groove is formed between the pressure ring, the extension ring and the fixed ring, and an oil-impregnated asbestos strip is provided in the groove.

[0014] As a further solution of the present invention, a lubrication mechanism is provided on one side of the weight sealing mechanism, and the lubrication mechanism is used to lubricate the weight sealing mechanism during the operation of the kiln shell, and the lubrication mechanism includes a plurality of second static friction plates, and the second static friction plates are the same in shape as the first static friction plates, and the second static friction plates and the first static friction plates are both bolted to the surface of the fixed ring, and the second static friction plates and the first static friction plates are arranged alternately, and an oil inlet is provided on the surface of the second static friction plate, and an oil supply copper tube is fixedly installed on the surface of the fixed ring away from the second static friction plates, and a plurality of oil supply ports are provided on the surface of the oil supply copper tube, and the oil supply port passes through the fixed ring and is connected with the oil inlet.

[0015] As a further solution of the present invention, the surface of one side where the hopper and the fixed ring are close to each other is provided with a plurality of limit grooves arranged at equal angles, and the bolts fixing the first static friction plate, the second static friction plate and the dynamic friction plate include screws and nuts, and the plurality of nuts are located on the side close to the limit groove, and a limit rod is fixedly connected to the surface of the limit groove, and during the installation process, the limit rod passes through the first static friction plate, the second static friction plate and the dynamic friction plate and then extends into the limit groove.

[0016] As a further solution of the present invention, an annular slide groove is provided on the surface of one side of the fixed ring close to the kiln shell, a movable frame is slidably connected in the slide groove, an arc-shaped through groove is provided on the surface of the movable frame, the through groove penetrates the movable frame, a plurality of L-shaped positioning rods are slidably connected in the through groove, a plurality of card grooves are provided on the surface of the positioning rod, a plurality of positioning grooves arranged at equal angles are provided on the surface of the fixed ring, a limiting plate is elastically slidably connected to the surface of the movable frame, the limiting plate is used to limit the positioning rod, a positioning plate is slidably connected to the surface of the movable frame, a limiting groove is provided on the surface of the positioning plate, and the upper end of the limiting groove is arc-shaped and the bottom is conical.

[0017] As a further solution of the present invention, an arc-shaped protective sleeve is rotatably connected in the limiting groove, and the protective sleeve is used to move to the outside of the force-bearing end of the screw to protect the outside of the force-bearing end of the screw when the screw is disassembled. A protective block is hinged on one side of the protective sleeve, and after the protective sleeve and the protective block are combined, the interior is a hexagon of the end of the screw, and the outer shape of the protective sleeve and the protective block is a hexagon after they are combined.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] 1. In the process of operation of the rotary kiln, the present invention utilizes a plurality of first static friction plates, a plurality of second static friction plates and a plurality of dynamic friction plates to combine and install the seal. When the first static friction plates, the second static friction plates and the dynamic friction plates are worn, only the friction plates with more serious wear need to be disassembled and replaced, and there is no need to disassemble all the seals, thereby simplifying the replacement steps and improving the replacement efficiency. When the kiln cylinder rotates to produce axial expansion, the fixed ring will slide on the surface of the sleeve under the action of the counterweight block and the pulling rope, so that the first static friction plate and the second static friction plate can always fit closely with the dynamic friction plate, thereby ensuring the sealing effect of the first static friction plate, the second static friction plate and the dynamic friction plate and avoiding material leakage. When the kiln cylinder rotates to produce radial swing, the fixed ring will move within a certain range with the kiln cylinder, so that the fixed ring can maintain fit with the end of the hopper.

[0020] 2. In the process of replacing the first static friction plate, the second static friction plate or the dynamic friction plate, the present invention takes the first static friction plate and places the nut into the bolt hole on the surface of the first static friction plate, then replaces the first static friction plate to the installation position, and the second static friction plates on both sides will move the first static friction plate and the nut to the corresponding installation position, and the limit rod will correspond to the limit groove, and then the screw is passed through the fixing ring and tightened with the nut, and the limit rod will move into the limit groove, which is conducive to the accurate and stable installation and fixation of the first static friction plate, and avoids the simultaneous rotation of the two ends of the bolt, which makes it impossible for the first static friction plate to be stably installed, thereby affecting the normal operation of the subsequent kiln shell.

[0021] 3. In the process of replacing the dynamic friction plate of the present invention, the movable frame is moved to the position of the dynamic friction plate that needs to be replaced, and then the limit plate is pulled up, and then the positions of multiple positioning rods are moved so that the multiple positioning rods can be moved to multiple positioning grooves respectively, and the limit plate is lowered to move the limit plate into the slot. The position of the movable frame will be limited, and then the positioning plate is moved close to the end of the screw, and the end of the screw will move into the limiting groove. The end of the screw can rotate in the limiting groove, which is beneficial to limit the screw within a certain range, facilitates subsequent disassembly and replacement, and improves replacement efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 It is a schematic diagram of the overall structure of the present invention after being cut apart;

[0024] Figure 3 for Figure 2 Schematic diagram of the structure at A in the middle;

[0025] Figure 4 It is a structural schematic diagram of the connection relationship between the kiln shell, the extension plate and the guard iron in the present invention;

[0026] Figure 5 It is a structural schematic diagram of the connection relationship between the kiln cylinder, the guard iron and the hopper in the present invention (hiding the lower half of the dynamic friction plate);

[0027] Figure 6 for Figure 5 Schematic diagram of the structure at B in the middle;

[0028] Figure 7 It is a structural schematic diagram of the positional relationship between the first static friction plate and the second static friction plate in the present invention;

[0029] Figure 8 for Figure 7 Schematic diagram of the structure at C in the middle;

[0030] Fig. 9 for Figure 7 Schematic diagram of the structure at D in the middle;

[0031] Fig.10 It is a structural schematic diagram of the positional relationship between the fixing ring and the oil supply copper tube in the present invention;

[0032] Fig.11 It is a structural schematic diagram of the connection relationship between the fixing ring and the hopper in the present invention;

[0033] Fig.12 for Fig.11 Schematic diagram of the structure at E in the middle;

[0034] Fig.13 It is a schematic diagram of the structure of the screw and the nut in the present invention.

[0035] In the accompanying drawings, the components represented by the reference numerals are as follows:

[0036] Base 1, support seat 2, kiln shell 3, feeding port 4, discharge port 5, mounting plate 6, feeding barrel 7, drive motor 8, gearbox 9, drive gear ring 10, extension plate 11, hopper 12, guard iron 13, dynamic friction plate 14, sleeve 15, fixing ring 16, first static friction plate 17, fixing buckle 18, pulling rope 19, suspension rod 20, rotating wheel 21, counterweight 22, extension ring 23, pressure ring 24, groove 25, oil-impregnated asbestos strip 26, second static friction plate 27, oil inlet 28, oil supply copper tube 29, oil supply port 30, limiting groove 31, screw 32, nut 33, limiting rod 34, slide groove 35, movable frame 36, through groove 37, positioning rod 38, card slot 39, positioning groove 40, limiting plate 41, positioning plate 42, limiting groove 43, protective sleeve 44, protective block 45. DETAILED DESCRIPTION

[0037] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for describing the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other accompanying drawings can be obtained based on these accompanying drawings without paying creative work.

[0038] See also Figure 1-Figure 13 The present invention provides a technical solution: a rotary kiln with a heavy hammer friction plate sealing device, comprising a base 1, a plurality of support seats 2, a mounting plate 6, a kiln barrel 3 and a feeding tube 7, the base 1 is mounted with the mounting plate 6, the feeding tube 7 and the plurality of support seats 2, the kiln barrel 3 is tilted and rotatably connected to the plurality of support seats 2, a feeding port 4 and a discharge port 5 are respectively opened at both ends of the kiln barrel 3, the height of the feeding port 4 is higher than the height of the discharge port 5, the mounting plate 6 is close to one side of the feeding port 4, and the feeding tube 7 is located at one side of the feeding port 4, characterized in that: it also includes:

[0039] A driving mechanism, used for driving the kiln shell 3 to rotate;

[0040] A protection mechanism is used to protect the gap between the feeding tube 7 and the kiln body 3 to prevent material from leaking out;

[0041] A drainage mechanism, used to guide the material at the port of the kiln barrel 3 into the kiln barrel 3;

[0042] The heavy hammer sealing mechanism is used to seal between the kiln body 3 and the feeding tube 7;

[0043] The protection mechanism includes an extension plate 11, which is fixedly connected to the surface of the kiln cylinder 3. Two semicircular hoppers 12 are bolted to the surface of the extension plate 11. The two hoppers 12 form a ring and extend to the outside of the feeding cylinder 7.

[0044] The heavy hammer sealing mechanism includes a plurality of dynamic friction plates 14, which are all bolted to the surface of the hopper 12 away from the kiln barrel 3, and the plurality of dynamic friction plates 14 are arranged circumferentially. Two semicircular sleeves 15 are fixedly installed on the surface of the feeding barrel 7, and a fixing ring 16 is sleeved on the surface of the sleeve 15. A gap is left between the fixing ring 16 and the sleeve 15. A plurality of first static friction plates 17 arranged circumferentially are bolted to the surface of the fixing ring 16 close to the dynamic friction plate 14, and the first static friction plate 17 fits the dynamic friction plate 14. A plurality of fixing buckles 18 arranged at equal angles are fixedly connected to the surface of the fixing ring 16 close to the dynamic friction plate 14, and a plurality of fixing buckles 18 are fixedly connected to the surfaces of the plurality of fixing buckles 18. A plurality of suspension rods 20 are fixedly connected to the surface of the mounting plate 6, and a rotating wheel 21 is rotatably connected to the bottom of the suspension rod 20. After the pulling rope 19 passes around the rotating wheel 21, it is fixedly connected to a counterweight block 22.

[0045] The driving mechanism includes a driving motor 8 and a gearbox 9, both of which are fixedly mounted on the surface of the base 1, the output shaft of the driving motor 8 is connected to the gearbox 9, a driving gear ring 10 is fixedly connected to the surface of the kiln shell 3, and the output end of the gearbox 9 is connected to the driving gear ring 10;

[0046] The drainage mechanism includes a plurality of guard irons 13, which are all bolted to the surface of the extension plate 11 on the side close to the hopper 12, and the plurality of guard irons 13 are arranged in a circle, and the guard irons 13 are bent from the middle position to the side away from the kiln body 3 to form an arc structure;

[0047] A blocking mechanism is provided on one side of the weight sealing mechanism, and the blocking mechanism is used to block the gap reserved by the weight sealing mechanism for the radial swing of the buffer kiln cylinder 3. The blocking mechanism includes an extension ring 23, and the extension ring 23 is fixedly connected to the surface of the fixed ring 16 on the side away from the dynamic friction plate 14. A pressure ring 24 is bolted to the surface of the extension ring 23, and a gap is left between the pressure ring 24 and the surface of the sleeve 15. A groove 25 is formed between the pressure ring 24, the extension ring 23 and the fixed ring 16, and an oil-impregnated asbestos strip 26 is arranged in the groove 25;

[0048] A lubrication mechanism is provided on one side of the weight sealing mechanism, and the lubrication mechanism is used to lubricate the weight sealing mechanism during the operation of the kiln shell 3. The lubrication mechanism includes a plurality of second static friction plates 27, and the second static friction plates 27 have the same shape as the first static friction plates 17. The second static friction plates 27 and the first static friction plates 17 are both bolted to the surface of the fixing ring 16, and the second static friction plates 27 and the first static friction plates 17 are arranged alternately. An oil inlet 28 is provided on the surface of the second static friction plates 27, and an oil supply copper tube 29 is fixedly installed on the surface of the fixing ring 16 away from the second static friction plates 27. A plurality of oil supply ports 30 are provided on the surface of the oil supply copper tube 29, and the oil supply port 30 passes through the fixing ring 16 and is connected to the oil inlet 28;

[0049] Before the rotary kiln works, the material needs to be put into the kiln cylinder 3 through the feeding tube 7, and then the driving motor 8 is started. The starting motor will drive the kiln cylinder 3 to rotate through the gearbox 9 and the driving gear ring 10. When the kiln cylinder 3 rotates, the hopper 12 and the guard iron 13 will be driven to rotate together through the extension plate 11. The hopper 12 adopts two semicircular structures, which can reduce the installation gap. The rotation of the hopper 12 will drive multiple dynamic friction plates 14 to rotate together. The dynamic friction plate 14 will rotate closely with the first static friction plate 17 and the second static friction plate 27. The lubricating oil in the oil supply copper tube 29 will flow to the surface of the second static friction plate 27 through the oil supply port 30 and the oil inlet 28. During the rotation of the dynamic friction plate 14, the lubricating oil will be brought into the entire end surface for lubrication, which is beneficial to reduce dynamic friction. The friction resistance between the friction plate 14 and the first static friction plate 17 and the second static friction plate 27 increases the service life of the dynamic friction plate 14, the first static friction plate 17 and the second static friction plate 27, and ensures the normal operation of the kiln shell 3. During the rotation of the kiln shell 3, the kiln shell 3 will produce axial and radial swings due to various reasons. The counterweight block 22 under the multiple suspension rods 20 will pull the fixed ring 16 to the side close to the dynamic friction plate 14 through the pulling rope 19 and the fixing buckle 18. The first static friction plate 17 and the second static friction plate 27 will always fit closely with the dynamic friction plate 14, so that the fixed ring 16 can slide on the surface of the sleeve 15 under the action of the counterweight block 22 and the pulling rope 19 when the kiln shell 3 rotates to produce axial expansion. The first static friction plate 17 and the second static friction plate 27 can always fit closely with the dynamic friction plate 14, ensuring the sealing effect of the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14 to avoid material leakage. When the kiln barrel 3 rotates and produces radial swing, the fixed ring 16 will move within a certain range with the kiln barrel 3, so that the fixed ring 16 can maintain the fit with the end of the hopper 12, which is beneficial to the fixed ring 16 still fitting with the hopper 12 when the kiln barrel 3 rotates and produces radial swing, ensuring the sliding seal of the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14, avoiding the leakage of materials inside the kiln barrel 3 during the operation of the kiln barrel 3, and utilizing multiple first static friction plates 17, multiple second static friction plates 27 and A plurality of dynamic friction plates 14 are assembled and sealed. When the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14 are worn, only the friction plate with more serious wear needs to be disassembled and replaced, and the seal does not need to be completely disassembled, thereby simplifying the replacement steps and improving the replacement efficiency. During the operation of the kiln barrel 3, the oil-immersed asbestos strip 26 can block the gap between the fixed ring 16 and the sleeve 15, and block the fine materials to prevent the materials from leaking from the gap between the fixed ring 16 and the sleeve 15. When the materials inside the kiln barrel 3 fly out of the kiln barrel 3, the hopper 12 can block and collect the materials scattered to the outside of the sleeve 15, and block the materials from entering between the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14.In the subsequent rotation process, the arc-shaped structure of the guard iron 13 is more conducive to guiding the material in the hopper 12 into the inside of the kiln barrel 3, and the guard iron 13 can prevent the high temperature inside the kiln barrel 3 from corroding the material and device outside the kiln barrel 3.

[0050] In the process of replacing the first static friction plate 17, the second static friction plate 27 or the dynamic friction plate 14, when the bolts are directly used to fix them, the bolts between the fixing ring 16 and the hopper 12 cannot be observed, and when the bolts are turned, both ends of the bolts are easily rotated at the same time, and they cannot be stably installed. As a further solution of the present invention, the surface of the side where the hopper 12 and the fixing ring 16 are close to each other is provided with a plurality of limit grooves 31 arranged at equal angles, and the bolts for fixing the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14 include screws 32 and nuts 33, and the plurality of nuts 33 are all located on the side close to the limit groove 31. The surface of the limit groove 31 is fixedly connected to the limit rod 34. During the installation process, the limit rod 34 penetrates the first static friction plate 17, the second static friction plate 27 and the dynamic friction plate 14 and then extends into the limit groove 31;

[0051] When the first static friction plate 17, the second static friction plate 27 or the dynamic friction plate 14 needs to be replaced, take the first static friction plate 17 for example and place the nut 33 into the bolt hole on the surface of the first static friction plate 17, then replace the first static friction plate 17 to the installation position, the second static friction plates 27 on both sides will move the first static friction plate 17 and the nut 33 to the corresponding installation position, the limit rod 34 will correspond to the limit groove 31, and then the screw 32 is passed through the fixing ring 16 and tightened with the nut 33, the limit rod 34 will move into the limit groove 31, which is conducive to the accurate and stable installation and fixation of the first static friction plate 17, avoiding the simultaneous rotation of the two ends of the bolt, and the first static friction plate 17 cannot be stably installed, thereby affecting the normal operation of the subsequent kiln shell 3.

[0052] When the moving friction plate 14 needs to be replaced, the kiln barrel 3 will rotate and is not convenient for replacement. As a further solution of the present invention, a ring-shaped slide groove 35 is provided on the surface of the fixed ring 16 close to the kiln barrel 3, and a moving frame 36 is slidably connected in the slide groove 35. The surface of the moving frame 36 is provided with an arc-shaped through groove 37, which penetrates the moving frame 36. A plurality of L-shaped positioning rods 38 are slidably connected in the through groove 37. The surface of the positioning rod 38 is provided with a plurality of card grooves 39. The surface of the fixed ring 16 is provided with a plurality of positioning grooves 40 arranged at equal angles. The surface of the moving frame 36 is elastically slidably connected to a limiting plate 41, and the limiting plate 41 is used to limit the positioning rod 38. The surface of the moving frame 36 is slidably connected to a positioning plate 42, and the surface of the positioning plate 42 is provided with a limiting groove 43, and the upper end of the limiting groove 43 is arc-shaped and the bottom is conical;

[0053] During the process of replacing the dynamic friction plate 14, the movable frame 36 is moved to the position of the dynamic friction plate 14 that needs to be replaced, and then the limit plate 41 is pulled upward, and then the positions of the multiple positioning rods 38 are moved so that the multiple positioning rods 38 can be moved to the multiple positioning grooves 40 respectively, and the limit plate 41 is lowered to make the limit plate 41 move to the slot 39. The position of the movable frame 36 will be limited, and then the positioning plate 42 is moved close to the end of the screw 32. The end of the screw 32 will move into the limiting groove 43, and the end of the screw 32 can rotate in the limiting groove 43, which is beneficial to limit the screw 32 within a certain range, facilitate subsequent disassembly and replacement, and improve replacement efficiency.

[0054] In the process of replacing the dynamic friction plate 14, there is a gap between the end of the screw 32 and the limiting groove 43, which is easy to move during the disassembly process. As a further solution of the present invention, an arc-shaped protective sleeve 44 is rotatably connected in the limiting groove 43. The protective sleeve 44 is used to move the screw 32 to the outside of the force-bearing end of the screw 32 when disassembling to protect the outside of the force-bearing end of the screw 32. A protective block 45 is hinged on one side of the protective sleeve 44. After the protective sleeve 44 and the protective block 45 are combined, the inner part is a hexagon of the end of the screw 32, and the outer shape of the protective sleeve 44 and the protective block 45 are combined.

[0055] When moving the positioning plate 42 toward the end of the screw 32, align the opening position of the protective cover 44 with the end of the screw 32, and the end of the bolt will engage with the inside of the protective cover 44. Then, after closing the protective block 45, the screw 32 can be directly removed using the protective cover 44 and the protective block 45. On the one hand, the screw 32 can be limited to reduce the movement of the screw 32, and on the other hand, damage to the end of the screw 32 can be reduced, thus avoiding damage to the end of the screw 32.

Claims

1. A rotary kiln with a heavy hammer friction plate sealing device, comprising a base (1), a plurality of support seats (2), a kiln body (3), a mounting plate (6) and a feeding tube (7), characterized in that: A plurality of the support seats (2) are fixed on the surface of the base (1); the kiln shell (3) is rotatably connected to the plurality of support seats (2); the kiln shell (3) is tilted; a feeding port (4) and a discharging port (5) are respectively provided at both ends of the kiln shell (3); the height of the feeding port (4) of the kiln shell (3) is higher than the height of the discharging port (5); the mounting plate (6) is fixedly mounted on the surface of the base (1); the mounting plate (6) is located close to the feeding port (4); the feeding tube (7) is fixed on the surface of the mounting plate (6); the feeding tube (7) is located at the feeding port (4); It also includes a driving mechanism, which is used to drive the kiln shell (3) to rotate; A protective mechanism, the protective mechanism being used to protect the gap between the feeding cylinder (7) and the kiln cylinder (3) to prevent material from leaking out; A drainage mechanism, the drainage mechanism being used to drain the material at the port of the kiln barrel (3) into the kiln barrel (3); A weight sealing mechanism, the weight sealing mechanism being used to seal between the kiln barrel (3) and the feeding barrel (7); The protection mechanism comprises an extension plate (11), the extension plate (11) being fixedly connected to the surface of the kiln cylinder (3), two semicircular hoppers (12) being bolted to the surface of the extension plate (11), the two hoppers (12) forming a ring and extending to the outside of the feeding cylinder (7); The weight sealing mechanism comprises a plurality of dynamic friction plates (14), the plurality of dynamic friction plates (14) are all bolted to the surface of the hopper (12) away from the kiln barrel (3), the plurality of dynamic friction plates (14) are arranged circumferentially, the surface of the feeding barrel (7) is fixedly mounted with two semicircular sleeves (15), the surface of the sleeve (15) is sleeved with a fixing ring (16), a gap is left between the fixing ring (16) and the sleeve (15), the surface of the fixing ring (16) close to the dynamic friction plate (14) is bolted to a plurality of circumferentially arranged A first static friction plate (17) is arranged in a row, the first static friction plate (17) is fitted with a dynamic friction plate (14), a surface of the fixing ring (16) close to the dynamic friction plate (14) is fixedly connected with a plurality of fixing buckles (18) arranged at equal angles, a pulling rope (19) is fixedly connected to the surface of the plurality of fixing buckles (18), a plurality of suspension rods (20) are fixedly connected to the surface of the mounting plate (6), a rotating wheel (21) is rotatably connected to the bottom of the suspension rod (20), and a counterweight (22) is fixedly connected to the pulling rope (19) after passing around the rotating wheel (21); A lubricating mechanism is provided on one side of the weight sealing mechanism, and the lubricating mechanism is used to lubricate the weight sealing mechanism during the operation of the kiln shell (3). The lubricating mechanism includes a plurality of second static friction plates (27), the second static friction plates (27) and the first static friction plates (17) having the same shape, the second static friction plates (27) and the first static friction plates (17) being bolted to the surface of the fixing ring (16), the second static friction plates (27) and the first static friction plates (17) being arranged alternately, an oil inlet (28) being provided on the surface of the second static friction plates (27), an oil supply copper tube (29) being fixedly mounted on the surface of the fixing ring (16) away from the second static friction plates (27), a plurality of oil supply ports (30) being provided on the surface of the oil supply copper tube (29), the oil supply ports (30) penetrating the fixing ring (16) and communicating with the oil inlet (28); The surfaces of the hopper (12) and the fixing ring (16) on the side close to each other are provided with a plurality of limit grooves (31) arranged at equal angles. The bolts fixing the first static friction plate (17), the second static friction plate (27) and the dynamic friction plate (14) include screws (32) and nuts (33). The plurality of nuts (33) are all located on the side close to the limit grooves (31). The surface of the limit groove (31) is fixedly connected with a limit rod (34). During the installation process, the limit rod (34) penetrates the first static friction plate (17), the second static friction plate (27) and the dynamic friction plate (14) and then extends into the limit groove (31). A circular slide groove (35) is provided on the surface of one side of the fixed ring (16) close to the kiln shell (3), a movable frame (36) is slidably connected in the slide groove (35), a curved through groove (37) is provided on the surface of the movable frame (36), the through groove (37) penetrates the movable frame (36), a plurality of L-shaped positioning rods (38) are slidably connected in the through groove (37), a plurality of clamping grooves (39) are provided on the surface of the positioning rods (38), a plurality of positioning grooves (40) arranged at equal angles are provided on the surface of the fixed ring (16), a limiting plate (41) is elastically slidably connected to the surface of the movable frame (36), the limiting plate (41) is used to limit the positioning rods (38), a positioning plate (42) is slidably connected to the surface of the movable frame (36), a limiting groove (43) is provided on the surface of the positioning plate (42), the limiting groove (43) has an arc-shaped upper end and a conical bottom.

2. The rotary kiln with a weight friction plate sealing device according to claim 1, characterized in that: The driving mechanism comprises a driving motor (8) and a gearbox (9), wherein the driving motor (8) and the gearbox (9) are both fixedly mounted on the surface of the base (1), the output shaft of the driving motor (8) is connected to the gearbox (9), the surface of the kiln shell (3) is fixedly connected with a driving gear ring (10), and the output end of the gearbox (9) is connected to the driving gear ring (10).

3. The rotary kiln with a weight friction plate sealing device according to claim 1, characterized in that: The drainage mechanism comprises a plurality of guard irons (13), each of which is bolted to a surface of the extension plate (11) on one side close to the hopper (12), and the plurality of guard irons (13) are arranged in a circle, and the guard irons (13) are bent from a middle position to a side away from the kiln barrel (3) to form an arc-shaped structure.

4. The rotary kiln with a weight friction plate sealing device according to claim 1, characterized in that: A blocking mechanism is provided on one side surface of the weight sealing mechanism, and the blocking mechanism is used to block the gap reserved by the weight sealing mechanism for the radial swing of the buffer kiln cylinder (3). The blocking mechanism includes an extension ring (23), and the extension ring (23) is fixedly connected to the surface of the fixed ring (16) on the side away from the dynamic friction plate (14). The surface of the extension ring (23) is bolted with a pressure ring (24), and a gap is left between the pressure ring (24) and the surface of the sleeve (15). A groove (25) is formed between the pressure ring (24), the extension ring (23) and the fixed ring (16), and an oil-impregnated asbestos strip (26) is arranged in the groove (25).

5. The rotary kiln with a weight friction plate sealing device according to claim 1, characterized in that: An arc-shaped protective sleeve (44) is rotatably connected in the limiting groove (43). The protective sleeve (44) is used to move to the outside of the force-bearing end of the screw (32) to protect the outside of the force-bearing end of the screw (32) when the screw (32) is disassembled. A protective block (45) is hingedly connected to one side of the protective sleeve (44). When the protective sleeve (44) and the protective block (45) are combined, the interior is a hexagon of the end of the screw (32), and when the protective sleeve (44) and the protective block (45) are combined, the outer shape is a hexagon.

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