A material guiding and sealing device for horizontal rotating equipment

Abstract

The present invention discloses a material guiding and sealing device for horizontal rotating equipment, which is particularly suitable for horizontal rotating equipment with a cylinder diameter greater than 5 meters. The material guiding device is mainly composed of components such as a material lifting bucket, a material guiding cylinder, and a discharge box; the material guiding cylinder is composed of two large and small conical cylinders, and the small conical cylinder is arranged inside the large conical cylinder in the opposite direction to the large conical cylinder. The sealing device is a combined sealing structure, which is composed of four seals. Starting from the discharge box side, the first is a floating ring seal, the second is a flexible filler seal, the third is a nitrogen seal, and the fourth is a rubber seal. The material guiding device adopted by the present invention can greatly reduce the diameter of the external sealing device, reduce the design difficulty of the sealing device, improve the reliability of the seal, and at the same time facilitate the discharge of materials. The combined sealing structure adopted by the present invention greatly improves the reliability of the seal, and can realize online interlocking control and adjustment of the sealing state.

Description

Technical Field

[0001] The present invention relates to the field of horizontal rotary mechanical equipment, in particular to a material guiding and sealing device of the horizontal rotary mechanical equipment. Background Art

[0002] Horizontal rotary equipment is a type of equipment widely used in the chemical, building materials, metallurgy, food and other industries. It is mainly used for the reaction, drying, cooling, grinding and other treatments of materials. Typical commonly used equipment include rotary calcining kilns, rotary drum dryers, rotary reactors, ball mills, etc. The working principle of horizontal rotary equipment is that its cylinder is arranged horizontally and rotates continuously during operation; the cylinder is tilted or horizontally set but has a pushing component inside; the material enters the cylinder from the feed end and moves to the discharge end due to gravity or pushing action; the material reacts, dries, cools, grinds and other treatments during the movement in the cylinder. Horizontal rotary equipment generally includes a rotating cylinder, a support device, a transmission device, a feeding device at the feed end and a material guide device at the discharge end. Dynamic and static sealing devices must also be provided between the feeding device and the material guide device and the rotating cylinder.

[0003] With the development of industrial technology, the requirements for horizontal rotary equipment are becoming increasingly higher. Horizontal rotary equipment often has one or more of the following characteristics: (1) large material processing capacity, with an hourly processing capacity of more than 100 tons; (2) large equipment scale, with the diameter of the rotating cylinder reaching 5 to 8 meters and the length of the cylinder reaching more than 50 to 100 meters; (3) high equipment operating temperature, with the material temperature reaching 600 to 900°C; (4) the material is toxic or flammable and explosive, and the equipment has high sealing requirements. Due to the above characteristics of horizontal rotary equipment, its material guide device and sealing device have always been the focus and difficulty of design.

[0004] The design difficulty of the guide device and sealing device of the horizontal rotating equipment is mainly reflected in the following aspects:

[0005] (1) When the material handling capacity is large, the material guide device adopts a larger diameter, or even keeps it the same size as the rotating cylinder diameter. This makes it easy to export the material, but the diameter of the dynamic and static sealing surfaces is too large, and it is basically difficult to ensure the sealing effect. If the diameter of the material guide device is reduced to a certain extent, the sealing is easy to achieve, but the material export becomes difficult, or it needs to be achieved with the help of a motor-driven screw. At this time, there are new problems such as the reliability of the motor-driven screw at high temperatures.

[0006] (2) The equipment is large in scale, and the excessive diameter and length lead to large processing errors and installation errors of the rotating cylinder. The radial runout during rotation is large, and the sealing device is difficult to ensure the sealing effect.

[0007] (3) The operating temperature of the equipment is high, and the axial and radial thermal expansion of the rotating cylinder is large, especially the axial thermal expansion, which can even reach hundreds of millimeters or more. Therefore, how to achieve dynamic and static sealing under large expansion and high temperature of hundreds of degrees Celsius is also a major problem that needs to be solved in the design.

[0008] (4) When the material inside the cylinder is toxic or flammable and explosive, how to ensure the strict sealing performance of the sealing device.

[0009] In summary, the material guide and sealing issues are key issues that restrict the large-scale development of horizontal rotary equipment. The present invention provides a solution to the design difficulties of the material guide and sealing devices of large-diameter horizontal rotary equipment. Summary of the Invention

[0010] The object of the present invention is to provide a material guiding and sealing device for horizontal rotating equipment, which is particularly suitable for horizontal rotating equipment with a cylinder diameter greater than 5 meters and a high operating temperature.

[0011] The technical solution adopted by the present invention is: a material guiding and sealing device for horizontal rotating equipment, characterized in that the material guiding device includes a material lifting bucket, a material guiding cylinder, and a material discharge box, and the sealing device is a combined sealing structure, which is arranged between the rotating material guiding cylinder and the stationary material discharge box and is fixed to the stationary material discharge box;

[0012] The material lifting bucket is welded to the inner wall of the flange cover of the rotating cylinder and rotates with the rotating cylinder. The material guide cylinder is composed of two large and small conical cylinders and is welded to the flange cover of the rotating cylinder and rotates coaxially with the rotating cylinder.

[0013] The large end of the large conical cylinder extends into the discharge box with a length of 50 to 100 mm. After the solid material enters the discharge box from the large conical cylinder, it is discharged from the discharge port. The small end of the large conical cylinder extends into the rotating cylinder with a length 50 to 100 mm longer than the width of the material lifting bucket. A discharge port is opened at the position where the material lifting bucket is welded on the large conical cylinder.

[0014] The small cone is arranged inside the large cone below the blanking opening of the large cone and is coaxial with the large cone. The length of the small cone is 50 to 100 mm longer than that of the blanking opening.

[0015] A horizontal wear-resistant sealing cylinder is welded on the large cone cylinder, and a sealing mounting flange is provided on the discharge box. The combined sealing structure is fixed to the sealing mounting flange of the discharge box through the flange and is placed on the outer surface of the wear-resistant sealing cylinder. It does not rotate with the large cone cylinder and the wear-resistant sealing cylinder.

[0016] The combined sealing structure consists of four seals. Starting from the discharge box side, the first seal is a floating ring seal, the second seal is a flexible filler seal, the third seal is a nitrogen seal, and the fourth seal is a rubber seal.

[0017] Furthermore, the directions of the large and small ends of the small conical tube are opposite to those of the large conical tube, and the small conical tube and the large conical tube are fixed by welding through 2 to 4 rib plates.

[0018] Furthermore, the material lifting bucket is welded from a bottom plate, a back plate and a side plate, and together with the flange end cover forms a cavity closed on four sides; the material lifting bucket is evenly arranged along the circumference on the inner wall of the flange cover, and 2 to 10 material lifting buckets are set according to the amount of material.

[0019] Furthermore, the number of the material drop openings on the large conical cylinder is consistent with the number of the material lifting buckets, and the material drop openings are opened in front of each material lifting bucket in the rotation direction.

[0020] Furthermore, the discharge box is arranged at the very end of the equipment, fixedly mounted on the equipment base, and does not rotate with the rotating cylinder.

[0021] Furthermore, the material guide barrel composed of two large and small conical cylinders also has a gas guiding function. The gas generated by the reaction in the horizontal rotating equipment enters the discharge box through the upper space of the material guide barrel. An exhaust port is provided on the upper part of the discharge box, and the gas generated by the reaction is discharged to the external pipeline from the exhaust port of the discharge box.

[0022] Furthermore, the first floating ring seal is arranged in an annular cavity formed by the sealing mounting ring I, the middle partition I, the wear-resistant sealing cylinder and the sealing mounting flange, and its sealing component is a floating sealing ring installed in the annular cavity; a plurality of small holes and annular semicircular grooves are opened along the circumference on the front side plate and the wear-resistant cylinder of the floating sealing ring; when the process gas enters the annular cavity and enters the annular semicircular groove and the tiny leakage channel through the small holes, the leakage channel includes two places, one is the 1-2mm gap between the floating sealing ring and the wear-resistant sealing cylinder; the other is the gap between the floating sealing ring and the discharge box sealing mounting flange, so the leakage channel is filled with process gas, forming the first seal.

[0023] Furthermore, two process gas interfaces are provided outside the annular cavity. When the equipment is running, process gas continuously enters the cavity from one process gas interface and is discharged from the other process gas interface, forming a cycle.

[0024] Furthermore, the floating sealing ring has a U-shaped structure and is sleeved on the rotating wear-resistant sealing cylinder. The inner diameter of the floating sealing ring is 2 to 5 mm larger than the outer diameter of the wear-resistant sealing cylinder; the outer diameter is equal to the inner diameter of the sealing mounting ring I minus twice the radial runout of the wear-resistant sealing cylinder, and then minus 10 to 20 mm.

[0025] Furthermore, a short section is used to connect the sealing mounting flange and the discharge box, and the inner diameter of the short section is equal to the outer diameter of the wear-resistant sealing cylinder plus twice the radial runout of the wear-resistant sealing cylinder, plus 10 to 20 mm.

[0026] Furthermore, in order to prevent the floating sealing ring from circumferential rotation, a number of limit blocks are provided on the sealing mounting flange. In order to prevent the floating sealing ring from axial movement, a flexible high-temperature resistant sealing gasket is provided between the floating sealing ring and the middle partition I.

[0027] Furthermore, the second flexible filler seal is composed of a flexible filler, which is arranged in an annular cavity formed by the sealing mounting ring I, the middle partition I, the sealing mounting ring II and the wear-resistant sealing cylinder.

[0028] Furthermore, the flexible filler is made of high temperature and wear resistant fiber fabric or graphite packing. The second flexible filler seal not only plays a sealing role, but also plays a heat insulating role to reduce the temperature of the fourth rubber seal.

[0029] Furthermore, the third nitrogen seal is arranged in the annular cavity formed by the sealing mounting ring II, the middle partition II and the wear-resistant sealing cylinder. No sealing components are arranged in the cavity, and only two nitrogen interfaces are arranged on the outside. Nitrogen continuously enters the cavity from one nitrogen interface and is discharged from the other nitrogen interface, forming a nitrogen circulation seal, and at the same time cooling the fourth rubber seal.

[0030] Furthermore, the fourth rubber seal is arranged in the annular cavity formed by the sealing installation ring II, the middle partition II, the end cover and the wear-resistant sealing cylinder, and its sealing component is an annular rubber sealing block installed in the annular cavity.

[0031] Furthermore, depending on the size of the sealing diameter, the rubber sealing block is used as a whole circle or divided into several pieces; a cavity is provided inside each rubber sealing block, and two connecting pipes are provided at both ends of the cavity; the lower part of the rubber sealing block is thickened and provided with multiple contact strips, the surface of the contact strips is composited with wear-resistant material, and the multiple contact strips are in contact with the wear-resistant sealing cylinder to form multiple seals; when the equipment is running, compressed air enters the cavity of the rubber sealing block through the connecting pipe, and the compressed air pressure is adjusted at any time according to the sealing situation to ensure a good sealing effect.

[0032] Furthermore, the rubber sealing block is provided with a lubricating oil inlet, which is preferentially arranged at the joint of the segmented rubber rings and runs through the entire rubber sealing block. The lubricating oil enters the gap between the multiple contact strips and the wear-resistant sealing cylinder through the lubricating oil inlet, so as to further improve the sealing effect and increase the life of the rubber sealing block.

[0033] Furthermore, circulating water can also be introduced into the cavity of the rubber sealing block. The pressurized circulating water not only ensures the sealing effect of the rubber sealing block, but also plays a cooling role.

[0034] Furthermore, in order to reduce the temperature of the entire combined sealing structure, the gap between the wear-resistant sealing cylinder and the large cone cylinder is filled with insulation material.

[0035] Furthermore, an adjustment flange is provided at the end of the wear-resistant sealing cylinder and is connected to the flange cover of the rotating cylinder by bolts. The diameter of the bolt hole on the adjustment flange is slightly larger than the bolt, so that when the rotating cylinder drives the wear-resistant sealing cylinder to have a large radial runout or deflection, the radial position and deflection angle of the wear-resistant sealing cylinder can be fine-tuned by adjusting the flange to reduce the influence of the radial runout or deflection of the rotating cylinder on the sealing device.

[0036] The technical solution adopted by the present invention has the following advantages:

[0037] (1) The present invention adopts a double-conical discharge structure. Compared with the traditional straight-cylinder material guide device without a drive device, this structure can greatly reduce the diameter of the external sealing device, reduce the design difficulty of the sealing device, and improve the reliability of the seal; compared with the necked motor-driven spiral material guide structure, the present invention does not need to adopt a motor drive, which reduces energy consumption and solves the problem of high failure rate of the motor-driven spiral under high temperature conditions.

[0038] (2) The structure of a large cone cylinder inside a small cone cylinder is more conducive to the discharge of materials by weight than the traditional straight cylinder material guide device, and at the same time solves the problem of materials leaking back into the rotating cylinder.

[0039] (3) The combined sealing structure adopted by the present invention consists of four seals, which greatly improves the reliability of the seal. The third nitrogen seal and the fourth rubber seal can be interlocked. By online detection of the content of reactive gas in nitrogen or the temperature change of nitrogen, the sealing condition of the sealing device can be indirectly determined, thereby interlocking the pressure in the cavity of the rubber seal block and adjusting the pressing force of the rubber seal block.

[0040] (4) A horizontal wear-resistant sealing cylinder is set outside the large cone cylinder, and the sealing device can slide freely outside the wear-resistant sealing cylinder, which first solves the problem of thermal expansion and contraction of the rotating cylinder; secondly, the wear-resistant sealing cylinder and the large cone cylinder can be filled with insulating material, which reduces the temperature at the sealing device and increases the service life of the sealing device; thirdly, the wear-resistant sealing cylinder is flange-connected, which can adjust and control the radial runout and deflection of the wear-resistant sealing cylinder, improve the sealing effect, and at the same time play a role in easy replacement after wear. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 It is a structural diagram of a material guiding and sealing device for horizontal rotating equipment;

[0042] Figure 2 yes Figure 1 AA section view;

[0043] Figure 3 It is a partial enlarged view of the sealing device;

[0044] Figure 4 yes Figure 3 BB cross-sectional view;

[0045] Figure 5 It is a structural diagram of the rubber sealing block;

[0046] The codes in the accompanying drawings represent: 1-rotating cylinder, 2-material lifting bucket, 3-flange cover, 4-material guide cylinder, 5-discharge box, 6-combined sealing structure, 41-large cone cylinder, 42-rib plate, 43-small cone cylinder, 44-dropping port, 45-wear-resistant sealing cylinder, 46-insulation material, 47-adjustment flange, 51-exhaust port, 52-dropping port, 53-sealing mounting flange, 54-short section, 55-limiting block, 61-sealing mounting ring I, 62-process gas interface, 63-middle partition I, 64-flexible filler, 65-nitrogen interface, 66-sealing mounting ring II, 67-pipe, 68-end cover, 69-rubber sealing block, 610-middle partition II, 611-flexible high-temperature resistant sealing gasket, 612-floating sealing ring, 613-wear-resistant cylinder, 614-front side plate, 615-lubricating oil inlet. DETAILED DESCRIPTION

[0047] To make the purpose, technical solutions, and advantages of the present invention more clear, the technical solutions of the present invention will be described in detail below. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other implementations obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] like Figure 1 and Figure 2As shown: A material guide device for horizontal rotating equipment is arranged at the discharge end of the rotating cylinder 1. The material guide device mainly consists of components such as a material lifting bucket 2, a material guide cylinder 4, and a discharge box 5. The material lifting bucket 2 is welded to the inner wall of the flange cover 3 of the rotating cylinder 1 and rotates with the rotating cylinder 1. The material guide cylinder 4 is composed of two conical cylinders, one large and one small, and is welded to the flange cover 3 of the rotating cylinder 1. It rotates coaxially with the rotating cylinder 1. The small end of the large conical cylinder 41 extends into the interior of the rotating cylinder 1, and the extension length is slightly longer than the width of the material lifting bucket 2. A discharge port 44 is opened in front of the location where the material lifting bucket 2 is welded on the large conical cylinder 41. The small conical cylinder 43 is arranged inside the large conical cylinder 41 and is coaxial with the large conical cylinder 41. It is located below the discharge port 44 of the large conical cylinder 41, and the length of the small conical cylinder 43 is slightly longer than the discharge port 44. The directions of the large and small ends of the small conical cylinder 43 are opposite to those of the large conical cylinder 41 . The small conical cylinder 43 and the large conical cylinder 41 are fixed by welding through 2 to 4 ribs 42 .

[0049] When the cylinder of the horizontal rotating equipment rotates, the material lifting bucket 2 lifts the material from the bottom of the rotating cylinder 1 to a higher position, and pours it into the interior of the large cone cylinder from the dropout port 44 of the large cone cylinder 41. Since there are small cone cylinders 43 and rib plates 42 at the lower part of the dropout port 44, the material will not fall back into the interior of the rotating cylinder 1 from the lower dropout port 44. The material poured into the large cone cylinder 41 accumulates on the upper surface of the small cone cylinder 43. As the small cone shell 43 rotates, the material slides into the interior of the rear end large cone cylinder 41 along the upper surface of the small cone cylinder 43 due to gravity. The material continues to slide on the inner surface of the rotating large cone cylinder 41 to the inside of the discharge box 5.

[0050] like Figure 1 and Figure 2 As shown, a circle of material lifting buckets 2 are evenly arranged along the inner wall of the flange cover 3. Depending on the amount of material, there can be anywhere from two to ten material lifting buckets 2. The material lifting buckets 2 are welded together from three plates: a bottom plate 21, a back plate 22, and side plates 23. Together with the flange cover 2, they form a four-sided, enclosed cavity. When material moves through the rotating cylinder 1 to the discharge end and enters the area where the material lifting buckets 2 are located, the rotating material lifting buckets 2 scoop up the material. When they rotate to a certain angle, they pour the material into the guide barrel 4, thereby lifting the material.

[0051] like Figure 1 and Figure 2 As shown, the number of the drop-out openings 44 on the large conical cylinder 41 is consistent with the number of the material lifting buckets 2 , and the drop-out openings 44 are opened in front of each material lifting bucket 2 in the rotation direction.

[0052] like Figure 1As shown, discharge box 5 is located at the very end. Because its discharge port 52 needs to be connected to the outside, it is fixed to the equipment foundation and does not rotate with rotating drum 1. The large end of large cone 41 extends into discharge box 5 for 50 to 100 mm. After entering discharge box 5 from large cone 41, solid material is discharged from discharge port 52.

[0053] like Figure 1 and Figure 2 As shown, the guide barrel 4, composed of two conical barrels of different sizes, also serves as a gas guide. The gases generated by the reaction in the horizontal rotary equipment enter the discharge box 5 through the upper space of the guide barrel 4. The discharge box 5 has an exhaust port 51 at its upper portion, through which the gases generated by the reaction are discharged to an external pipeline.

[0054] like Figure 1 and Figure 3 As shown: A sealing device for horizontal rotating equipment is arranged between the rotating guide cylinder 4 and the static fixed discharge box 5. The sealing device adopted by the present invention is a combined sealing structure 6. In order to adapt to the axial displacement of the cylinder 1 when it is heated and expanded, a horizontal wear-resistant sealing cylinder 45 is arranged on the outside of the large cone cylinder 41, and a sealing mounting flange 53 is arranged on the discharge box 5. The combined sealing structure 6 is fixed to the sealing mounting flange 53 of the discharge box 5 through the flange and is placed on the outer surface of the wear-resistant sealing cylinder 45. The combined sealing structure 6 does not rotate with the large cone cylinder 41 and the sealing mounting cylinder 45. The combined sealing structure 6 is composed of four seals. Starting from the discharge box 5 side, the first is a floating ring seal, the second is a flexible filler seal, the third is a nitrogen seal, and the fourth is a rubber seal.

[0055] like Figure 1 and Figure 3As shown, the first floating ring seal is located within the annular cavity formed by the seal mounting ring I 61, the intermediate partition I 63, the wear-resistant sealing cylinder 45, and the seal mounting flange 53. The sealing component is a floating seal ring 612 installed within this annular cavity. The floating seal ring 612 has a U-shaped structure and fits over the rotating wear-resistant sealing cylinder 45. Based on thermal expansion calculations, its inner diameter can be 2 to 5 mm larger than the outer diameter of the wear-resistant sealing cylinder 45. Two process gas ports 62 are evenly spaced around the outer circumference of the annular cavity. During operation, process gas continuously enters the cavity through one of these ports and exits through the other, forming a circulation system. Several small holes and annular semicircular grooves are circumferentially defined on the front side plate 614 of the floating seal ring 612 and the wear-resistant cylinder 613. When the process gas enters the annular cavity and enters the annular semicircular groove and tiny leakage channel through the small hole, the leakage channel includes two parts: one is the 1-2 mm gap between the floating sealing ring 612 and the wear-resistant sealing cylinder 45; the other is the gap between the floating sealing ring 612 and the discharge box sealing mounting flange 53. Therefore, the leakage channel is filled with process gas, forming the first seal.

[0056] like Figure 3 As shown: To accommodate the radial runout of the wear-resistant seal sleeve 45 caused by equipment processing and installation errors, the outer diameter of the floating seal ring is equal to the inner diameter of the seal mounting ring I 61 minus twice the radial runout of the wear-resistant seal sleeve, minus 10 to 20 mm. The seal mounting flange 53 is connected to the discharge box 5 using a short section 54. The inner diameter of the short section 54 is equal to the outer diameter of the wear-resistant seal sleeve 45 plus twice the radial runout of the wear-resistant seal sleeve, plus an additional 10 to 20 mm.

[0057] like Figure 3 and Figure 4 As shown: To prevent the floating seal ring 612 from circumferential rotation, a plurality of limit blocks 55 are provided on the sealing mounting flange 53. To prevent the floating seal ring 612 from axial movement, a flexible high temperature resistant sealing gasket 611 is provided between the floating seal ring 612 and the intermediate partition I 63.

[0058] like Figure 3 As shown, the second flexible filler seal is located within the annular cavity formed by seal mounting ring I 61, intermediate partition I 63, seal mounting ring II 66, and wear-resistant seal cylinder 45. The sealing component is flexible filler 64, which fills this annular cavity. Flexible filler 64 can be made of high-temperature and wear-resistant fiber fabric or graphite packing. In addition to sealing, the second flexible filler seal also provides insulation, reducing the temperature at the fourth rubber seal.

[0059] like Figure 3As shown, the third nitrogen seal is installed in the annular cavity formed by the seal mounting ring II 66, the intermediate partition II 610, and the wear-resistant sealing cylinder 45. This cavity does not contain any sealing components. Only two nitrogen ports 65 are evenly arranged along the outer circumference. Nitrogen continuously enters the cavity through nitrogen port 65 and is discharged through the other nitrogen port 65, forming a cycle. The nitrogen forms a nitrogen seal in this cavity and also cools the fourth rubber seal.

[0060] like Figure 3 and Figure 5 As shown, the fourth rubber seal is installed in the annular cavity formed by the seal mounting ring II 66, the intermediate partition II 610, the end cap 68, and the wear-resistant sealing cylinder 45. Its sealing component is an annular rubber sealing block 69 installed in this annular cavity. Depending on the diameter of the seal, the rubber sealing block 69 can be a full circle or divided into several pieces. Each rubber sealing block 69 has an internal cavity, with two connecting pipes 67 at each end. The lower portion of the rubber sealing block 69 is thickened and equipped with multiple contact strips. The surface of the contact strips is composited with a wear-resistant material. These contact strips contact the wear-resistant sealing cylinder 45 to form a multi-stage seal. When the equipment is operating, compressed air enters the cavity of the rubber sealing block 69 through the connecting pipe 67. The compressed air pressure is adjusted according to the sealing condition to ensure a good sealing effect.

[0061] like Figure 5 As shown: the rubber sealing block 69 is provided with a lubricating oil inlet 615, which is preferably arranged at the joint of the segmented rubber rings and runs through the entire rubber sealing block 69. The lubricating oil enters the gap between the multiple contact strips and the wear-resistant sealing cylinder 45 through the lubricating oil inlet 615, so as to further improve the sealing effect and increase the service life of the rubber sealing block 69.

[0062] like Figure 3 and Figure 5 As shown, circulating water can also be introduced into the cavity of the rubber sealing block 69. In addition to ensuring the sealing effect of the rubber sealing block 69, the pressurized circulating water also plays a cooling role.

[0063] like Figure 1 and Figure 3 As shown, in order to reduce the temperature of the entire combined sealing structure 6 and improve the service life and sealing effect of the sealing structure 6, the gap between the wear-resistant sealing cylinder 45 and the large cone cylinder 41 is filled with insulating material 46.

[0064] like Figure 1 and Figure 3As shown: an adjustment flange 47 is provided at the end of the wear-resistant sealing cylinder 45, and is connected to the flange cover 3 of the rotating cylinder 1 by bolts. The diameter of the bolt hole on the adjustment flange 47 is slightly larger than the bolt, so that when the rotating cylinder 1 drives the wear-resistant sealing cylinder 45 to have a large radial runout or deflection, the radial position and deflection angle of the wear-resistant sealing cylinder 45 can be fine-tuned by adjusting the flange 47 to reduce the influence of the radial runout or deflection of the rotating cylinder 1 on the sealing device.

Claims

1. A material guiding and sealing device for horizontal rotating equipment, comprising a material guiding device and a sealing device, characterized in that: The material guiding device comprises a material lifting bucket (2), a material guiding cylinder (4), and a material discharging box (5); the sealing device is a combined sealing structure (6), which is arranged between the rotating material guiding cylinder (4) and the stationary material discharging box (5) and is fixed on the stationary material discharging box (5); The material lifting bucket (2) is welded to the inner wall of the flange cover (3) of the rotating cylinder (1) and rotates along with the rotating cylinder (1). The material guide cylinder (4) is composed of two large and small conical cylinders and is welded to the flange cover (3) of the rotating cylinder (1) and rotates coaxially with the rotating cylinder (1). The large end of the large conical cylinder (41) extends into the discharge box (5), and the length of the extension into the discharge box (5) is 50 to 100 mm. After the solid material enters the discharge box (5) from the large conical cylinder (41), it is discharged from the discharge port (52); the small end of the large conical cylinder (41) extends into the interior of the rotating cylinder (1), and the extension length is 50 to 100 mm longer than the width of the material lifting bucket (2). The position of the welding material lifting bucket (2) on the large conical cylinder (41) is provided with a discharge port (44); The small conical cylinder (43) is arranged inside the large conical cylinder (41) and below the blanking opening (44) of the large conical cylinder (41), and is coaxial with the large conical cylinder (41). The length of the small conical cylinder (43) is 50 to 100 mm longer than the length of the blanking opening (44); A horizontal wear-resistant sealing cylinder (45) is welded on the large conical cylinder (41), a sealing mounting flange (53) is provided on the discharge box (5), and the combined sealing structure (6) is fixed to the sealing mounting flange (53) of the discharge box (5) through the flange and is placed on the outer surface of the wear-resistant sealing cylinder (45) and does not rotate with the large conical cylinder (41) and the wear-resistant sealing cylinder (45); The direction of the large and small ends of the small cone (43) is opposite to that of the large cone (41), and the small cone (43) and the large cone (41) are fixed by welding through 2 to 4 rib plates (42); The number of the drop openings (44) on the large conical cylinder (41) is the same as the number of the material lifting buckets (2), and the drop openings (44) are opened in front of each material lifting bucket (2) in the direction of rotation; The combined sealing structure (6) is composed of four seals. Starting from the discharge box (5) side, the first seal is a floating ring seal, the second seal is a flexible filler seal, the third seal is a nitrogen seal, and the fourth seal is a rubber seal.

2. A material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: The material lifting bucket (2) is welded together with a bottom plate (21), a back plate (22) and a side plate (23), and together with the flange cover (3) forms a cavity closed on four sides; the material lifting bucket (2) is evenly arranged along the circumference on the inner wall of the flange cover (3), and 2 to 10 material lifting buckets (2) are provided according to the amount of material.

3. A material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: The discharge box (5) is arranged at the end of the equipment and is fixedly mounted on the equipment base, and does not rotate with the rotating cylinder (1).

4. A material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: The guide cylinder (4) composed of two large and small conical cylinders also has a gas guiding function. The gas generated by the reaction in the horizontal rotating equipment enters the discharge box (5) through the upper space of the guide cylinder (4). An exhaust port (51) is provided on the upper part of the discharge box (5). The gas generated by the reaction is discharged from the exhaust port (51) of the discharge box (5) to an external pipeline.

5. The material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: The first floating ring seal is arranged in an annular cavity formed by the sealing mounting ring I (61), the middle partition I (63), the wear-resistant sealing cylinder (45) and the sealing mounting flange (53), and its sealing component is a floating sealing ring (612) installed in the annular cavity; a plurality of small holes and annular semicircular grooves are opened along the circumference on the front side plate (614) and the wear-resistant cylinder (613) of the floating sealing ring (612); when the process gas enters the annular cavity and enters the annular semicircular groove and the tiny leakage channel through the small holes, the leakage channel includes two parts, one is the 1-2 mm gap between the floating sealing ring (612) and the wear-resistant sealing cylinder (45); the other is the gap between the floating sealing ring (612) and the discharge box sealing mounting flange (53), so the leakage channel is filled with process gas, forming the first seal.

6. A material guiding and sealing device for horizontal rotating equipment according to claim 5, characterized in that: Two process gas interfaces (62) are provided outside the annular cavity. When the device is in operation, process gas continuously enters the cavity from one process gas interface and is discharged from the other process gas interface, forming a cycle.

7. The material guiding and sealing device for horizontal rotating equipment according to claim 5, characterized in that: The floating sealing ring (612) is a U-shaped structure and is mounted on the rotating wear-resistant sealing cylinder (45). The inner diameter of the floating sealing ring (612) is 2 to 5 mm larger than the outer diameter of the wear-resistant sealing cylinder (45); the outer diameter is equal to the inner diameter of the sealing mounting ring I (61) minus twice the radial runout of the wear-resistant sealing cylinder, and then minus 10 to 20 mm.

8. The material guiding and sealing device for horizontal rotating equipment according to claim 5, characterized in that: The sealing mounting flange (53) and the discharge box (5) are connected by a short section (54), the inner diameter of which is equal to the outer diameter of the wear-resistant sealing cylinder (45) plus twice the radial runout of the wear-resistant sealing cylinder, plus 10 to 20 mm.

9. The material guiding and sealing device for horizontal rotating equipment according to claim 5, characterized in that: In order to prevent the floating sealing ring (612) from rotating circumferentially, a plurality of limit blocks (55) are provided on the sealing mounting flange (53). In order to prevent the floating sealing ring (612) from moving axially, a flexible high-temperature resistant sealing gasket (611) is provided between the floating sealing ring (612) and the intermediate partition plate I (63).

10. The material guiding and sealing device for horizontal rotating equipment according to claim 5, characterized in that: The second flexible filler seal is composed of a flexible filler (64), which is arranged in an annular cavity formed by the sealing mounting ring I (61), the middle partition I (63), the sealing mounting ring II (66) and the wear-resistant sealing cylinder (45).

11. The material guiding and sealing device for horizontal rotating equipment according to claim 10, characterized in that: The flexible filler (64) is made of high temperature and wear resistant fiber fabric or graphite packing. The second flexible filler seal not only plays a sealing role, but also plays a heat insulating role to reduce the temperature of the fourth rubber seal.

12. The material guiding and sealing device for horizontal rotating equipment according to claim 10, characterized in that: The third nitrogen seal is provided in an annular cavity formed by the sealing mounting ring II (66), the middle partition II (610) and the wear-resistant sealing cylinder (45). No sealing components are provided in the cavity. Only two nitrogen interfaces (65) are provided on the outside. Nitrogen continuously enters the cavity from one nitrogen interface and is discharged from the other nitrogen interface, forming a nitrogen circulation seal and playing a cooling role for the fourth rubber seal.

13. The material guiding and sealing device for horizontal rotating equipment according to claim 12, characterized in that: The fourth rubber seal is arranged in an annular cavity formed by the sealing mounting ring II (66), the middle partition II (610), the end cover (68) and the wear-resistant sealing cylinder (45), and its sealing component is an annular rubber sealing block (69) installed in the annular cavity.

14. The material guiding and sealing device for horizontal rotating equipment according to claim 13, characterized in that: According to the size of the sealing diameter, the rubber sealing block (69) is used as a whole circle or divided into several pieces; each rubber sealing block (69) is provided with a cavity inside, and two connecting pipes (67) are provided at both ends of the cavity; the lower part of the rubber sealing block (69) is thickened and provided with multiple contact strips, the surface of the contact strips is composited with wear-resistant material, and the multiple contact strips are in contact with the wear-resistant sealing cylinder (45) to form multiple seals; when the equipment is running, compressed air enters the cavity of the rubber sealing block (69) through the connecting pipe (67), and the compressed air pressure is adjusted at any time according to the sealing condition to ensure a good sealing effect.

15. The material guiding and sealing device for horizontal rotating equipment according to claim 14, characterized in that: The rubber sealing block (69) is provided with a lubricating oil inlet (615), which is preferably arranged at the joint of the segmented rubber rings and runs through the entire rubber sealing block (69). The lubricating oil enters the gap between the multiple contact strips and the wear-resistant sealing cylinder (45) through the lubricating oil inlet (615), so as to further improve the sealing effect and increase the service life of the rubber sealing block (69).

16. The material guiding and sealing device for horizontal rotating equipment according to claim 15, characterized in that: Circulating water can also be introduced into the cavity of the rubber sealing block (69). The pressurized circulating water not only ensures the sealing effect of the rubber sealing block (69), but also plays a cooling role.

17. The material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: In order to reduce the temperature of the entire combined sealing structure (6), the gap between the wear-resistant sealing cylinder (45) and the large conical cylinder (41) is filled with a heat-insulating material (46).

18. The material guiding and sealing device for horizontal rotating equipment according to claim 1, characterized in that: An adjusting flange (47) is provided at the end of the wear-resistant sealing cylinder (45) and is connected to the flange cover (3) of the rotating cylinder (1) by bolts. The diameter of the bolt hole on the adjusting flange (47) is slightly larger than the bolt, so that when the rotating cylinder (1) drives the wear-resistant sealing cylinder (45) to have a large radial runout or deflection, the radial position and deflection angle of the wear-resistant sealing cylinder (45) can be fine-tuned by adjusting the flange (47), thereby reducing the influence of the radial runout or deflection of the rotating cylinder (1) on the sealing device.

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