WO2018107662A1 - 旋转密封机构 - Google Patents

旋转密封机构 Download PDF

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Publication number
WO2018107662A1
WO2018107662A1 PCT/CN2017/085424 CN2017085424W WO2018107662A1 WO 2018107662 A1 WO2018107662 A1 WO 2018107662A1 CN 2017085424 W CN2017085424 W CN 2017085424W WO 2018107662 A1 WO2018107662 A1 WO 2018107662A1
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WO
WIPO (PCT)
Prior art keywords
sealing
rotating body
assembly
disposed
seal
Prior art date
Application number
PCT/CN2017/085424
Other languages
English (en)
French (fr)
Inventor
朱书红
Original Assignee
朱书红
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 朱书红 filed Critical 朱书红
Priority to RU2019101092A priority Critical patent/RU2714756C1/ru
Priority to JP2019502136A priority patent/JP6703640B2/ja
Priority to KR1020187027959A priority patent/KR102057796B1/ko
Priority to EP17881008.1A priority patent/EP3553439B1/en
Priority to CA3021151A priority patent/CA3021151C/en
Priority to AU2017374531A priority patent/AU2017374531B2/en
Priority to UAA201900770A priority patent/UA125751C2/uk
Publication of WO2018107662A1 publication Critical patent/WO2018107662A1/zh
Priority to ZA2018/07829A priority patent/ZA201807829B/en
Priority to US16/198,392 priority patent/US20190093949A1/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J15/00—Sealings
    • F16J15/16—Sealings between relatively-moving surfaces
    • F16J15/32—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings
    • F16J15/3204—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip
    • F16J15/3232—Sealings between relatively-moving surfaces with elastic sealings, e.g. O-rings with at least one lip having two or more lips
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
    • F27B7/00—Rotary-drum furnaces, i.e. horizontal or slightly inclined
    • F27B7/20—Details, accessories, or equipment peculiar to rotary-drum furnaces
    • F27B7/22—Rotary drums; Supports therefor
    • F27B7/24—Seals between rotary and stationary parts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F27—FURNACES; KILNS; OVENS; RETORTS
    • F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
    • F27D99/00—Subject matter not provided for in other groups of this subclass
    • F27D99/0073—Seals

Definitions

  • the invention relates to the technical field of rotary sealing mechanisms, in particular to the technical field of sealing mechanisms of rotary kiln.
  • Rotary kiln is widely used in building materials, metallurgy, chemical industry, environmental protection and other fields. According to different materials, it can be divided into cement kiln, metallurgical chemical kiln and lime kiln.
  • the cement kiln is mainly used for calcining cement clinker;
  • the metallurgical chemical kiln is mainly used for magnetizing roasting of iron ore in iron and steel industry in metallurgical industry; oxidizing roasting of chromium and ilmenite; roasting of high alumina bauxite in refractory plant and roasting clinker in aluminum plant, hydrogen Alumina; chemical plant roasting chrome ore and chrome ore; etc.; lime kiln for roasting active lime and light burnt dolomite for steel plants.
  • the above rotary kiln has a common feature: the process of heating the material is external gas or the material itself contains fuel such as coal or heavy oil and the air is burned in the rotary kiln, the material is directly heated, and some materials that need to be reduced are controlled by the rotary kiln.
  • the amount of air inside can not completely burn in the rotary kiln, resulting in a reducing atmosphere, such as carbon monoxide, but the concentration of carbon monoxide is relatively low, the air leaking into the kiln, or the reducing gas at the point of leakage in the kiln, There is no major hazard to the safety of the rotary kiln.
  • the center of the body beats and is greatly reduced.
  • the coal or biomass pyrolysis produces high gas methane, carbon monoxide and hydrogen, and the calorific value is high. If it is in the seal, whether the air enters the rotary kiln or the gas leaks from the rotary kiln, the heat is very high. Solving equipment poses a great security threat and easily affects the effects of the reaction, which requires a safe, reliable and effective non-leakage rotary seal.
  • Applicant Estonia Energy Petroleum Industry Co., Ltd., entitled: Rotary Kiln End Seal Assembly, Publication (Announcement)
  • No. 102741596A discloses an end seal assembly for a rotary kiln and an improvement to its end seal (16);
  • the first and second housing rings (2, 3) used in the end seal are composed of at least four parts, and a rectangular shape for the lubricant has been formed on both sides of the rotating housing ring (1).
  • the publication number is CN 104515382 A, and the applicant is Shenyang Aluminum Magnesium Design and Research Institute Co., Ltd., which is a sealing device for rotary kiln. It is suitable for sealing airflow and dust in various rotary kiln.
  • the sealing device is set in rotary kiln. Body, a sealing mechanism is formed between the friction block and the rotary kiln cylinder, and one end of the sealing device is connected to the kiln head cover or the kiln tail cover through a connecting plate; the sealing device comprises: a connecting plate, a fixing plate, a front wedge, and a rear Wedges, pulley frames, pulleys, wire ropes, counterweights, friction blocks.
  • the sealing device of the invention has the advantages of good sealing effect, reliable structure, convenient maintenance, prevention of material leakage, environmental protection and energy conservation, and solves the axial displacement and radial runout of the cylinder in the prior art, resulting in the kiln head. Problems such as kiln seal failure, but between the friction block and the rotary kiln cylinder, and between the friction block and the friction block, there is a gap during the movement, and the seal can only guarantee no large leakage, rigidity The seal between them still does not guarantee that the gas will not leak.
  • the present invention is directed to the deficiencies of the prior art, and provides a rotary sealing mechanism to completely solve the technical problem that the rotary seal is affected by the center jump of the rotating body.
  • a rotary sealing mechanism disposed between the fixed body and the rotating body comprising: a sealing assembly disposed on a circumference of the rotating body and rotatably connected to the rotating body; and a flexible connection between the sealing assembly and the fixed body a connecting body; a circumferential limiting member is disposed on the sealing assembly.
  • a follower support mechanism disposed on the seal assembly, the follower support mechanism defining a coaxiality of the seal assembly with the rotating body.
  • the sealing assembly includes a sealing frame body, and a sealing ring, a sealing ring positioning ring and a sealing ring gland are disposed in the sealing frame body.
  • a flange is disposed between the fixed body and the flexible connecting body.
  • a grease passage is disposed on the seal assembly.
  • a cylindrical body is disposed between the fixed body and the fixed body flange to which the fixed body is connected, and the diameter of the cylindrical body is between the fixed body diameter and the rotating body diameter size, and the cylindrical body may be a part of the fixed body, the cylinder
  • a labyrinth ash insulation wall is provided between the body and the rotating body.
  • a cylindrical body is disposed between the fixed body and the fixed body flange to which the fixed body is connected, and the diameter of the cylindrical body is between the fixed body diameter and the rotating body diameter size, and the cylindrical body may be a part of the fixed body, the cylinder A cooling device is disposed between the body and the rotating body.
  • a wheel belt is disposed between the sealing assembly and the rotating body, and the side of the wheel belt and the rotating body adjacent to the flexible body is disposed
  • the ring plate is welded and sealed.
  • a cooling mechanism is disposed between the rotating body and the belt. Further, the mechanism may be an air cooling mechanism or a water cooling mechanism.
  • the invention is directed to the problem that the rotary seal, especially the rotary body seal which is easy to occur in the rotary seal in the medium and large equipment, has poor sealing, poor sealing effect and short life of the sealing component, and creatively connects the rotating body and the fixed body.
  • the rotary seal is disassembled, that is, it is decomposed by a rotary seal into a rotary seal between the rotating body and the seal assembly, and a flexible jump seal between the seal assembly and the fixed body.
  • the original complex rotation, bounce, twisting, and slipping are combined into a single rotary seal and a multi-motion that beats, twists, and slips into an absorption bounce, twisting, A flexible, flexible, slip-slip seal; both seals are fully sealed.
  • the sealing assembly Providing a sealing assembly rotatably connected to the rotating body on the circumference of the rotating body, the sealing assembly is in contact with the rotating body, and a good rotary seal between the sealing assembly and the rotating body is realized during the process of ensuring contact between the sealing assembly and the rotating body.
  • the sealing assembly is connected to the fixing body through a flexible connecting body. One end of the flexible connecting body is connected with the sealing assembly, and the other end is connected with the fixed body.
  • the sealing assembly moves relative to the rotating body, but During the relative movement, the radial direction jumps up and down with the rotating body, and the sealing assembly is connected with the fixed body through the flexible connecting body during the jumping process, and the flexible connecting body itself is soft and can occur variously.
  • the deformation does not transmit the position change on the sealing assembly to the fixed body, so that the long-term coexistence of the stationary body and the beating of the sealing assembly can be achieved without affecting each other.
  • Frequent dynamic changes in position between the ideal axis and the actual dynamic axis are automatically digested by the flexible connector through its own flexibility
  • the flexible linker can interfere with each other to ensure that the position of the fixed body between the seal assembly, but also to achieve a reliable seal between the seal assembly and the fixed body.
  • the rotating body and the fixed body are more compact, and the smaller spacing is the point of focus and foothold for all sealing, so the material is more precise.
  • the higher-end design process is to better reduce the center bounce of the rotating body and increase the deformation size of the seal. It is categorically unthinkable to use a component that is completely incoherent with the rotary seal to allow and compensate for the bouncing of the center of the rotating body.
  • the present invention decomposes the rotary seal between the rotating body and the fixed body, that is, The rotary seal is decomposed into a rotary seal between the rotating body and the seal assembly, and the flexible jump seal between the seal assembly and the fixed body is associated with
  • the conventional design of those skilled in the art is a completely different design direction, and those skilled in the art have no reason to obtain the technical suggestion of connecting the rotary seal with a flexible connecting body for solving the rotating body and the fixed body during the jumping of the rotating body.
  • the problem of rotation between the seals is a completely different design direction, and those skilled in the art have no reason to obtain the technical suggestion of connecting the rotary seal with a flexible connecting body for solving the rotating body and the fixed body during the jumping of the rotating body.
  • the flexible connecting body can not only adapt to the radial runout problem of the sealing assembly when the rotating body is bouncing in the center, so that the sealing assembly jumps with the rotating body in the radial direction.
  • the pressure and deformation of the seal in the seal assembly are within the normal range, improving the sealing effect and the life of the seal.
  • the sealing member in the sealing assembly is rubbed by the rotating body, and the force received in the circumferential direction is unloaded onto the flexible body, and the position of the sealing assembly in the circumferential direction also changes.
  • the characteristics of the flexible connecting body itself may also allow the sealing assembly to undergo a certain twisting change in the circumferential position.
  • the frictional rotating force passes through the flexible body and is finally unloaded on the fixed body, thereby causing a twisting reaction force.
  • the reaction force in turn limits the rotation of the seal assembly through the flexible body, which can only be in a small range.
  • the flexible connecting body is inevitably driven to a certain degree of distortion, which will change the tensile force of the flexible connecting body, which in turn restricts the sealing assembly from continuing to rotate in the circumferential direction, so the flexible connecting body is
  • the combination of radial runout and circumferential rotation of the seal assembly allows the seal assembly to be radially jumped, defines circumferential rotation, and completes the seal between the seal assembly and the fixed body, which is a key component in the dynamic rotary seal.
  • the fixed body, the sealing assembly, the rotating body, the flexible connecting body and the follower supporting mechanism which are connected as the flexible connecting body and the follower supporting mechanism are matched combined bodies, respectively corresponding to a large center jump of the rotating body,
  • the stable spacing between the seal assembly and the rotating body, the small friction force, the normal deformation of the seal and the better sealing effect, only the small friction force can satisfy the radial change and the circumferential direction of the seal assembly by the flexible connecting body.
  • the diversion, so the present invention is a dynamic overall innovation system, based on the innovative ideas of the rotary seal, a technical result of mutual support between the various components.
  • the rotary sealing mechanism of the present invention does not actually limit the center jump of the rotating body, but allows the center of the rotating body to jump without affecting the sealing.
  • the flexible connecting body compensates for the center to jump, so that the jump stops to the fixed body, allowing the sealing assembly to jump with the center of the rotating body, and the two forces of the center jump and the circumferential friction are effectively eliminated by the flexible connecting body, and the rotation is performed after a period of operation.
  • the center of the body will gradually decrease in amplitude, slowly reaching a more controllable range, and this speed is very fast, even more than twice as fast as a rotating body that is not liberated by the sealing member. .
  • the shape of the large and medium-sized kiln body will slowly undergo local deformation during the rotation process, the shape is closer to the ideal rotating body, which is more conducive to the rotation of the rotating body, but the speed closer to the rotating body is indeed Unexpected.
  • the structure of the large and medium-sized rotating body is generally in the form of metal structure, the volume is large, and the internal material carries more materials, accompanied by the high-temperature chemical reaction process. It is not thought that the large and medium-sized rotating body or the rotating equipment with high load at high temperature is The shape of the cylinder will deform so quickly during the rotation. It is more conducive to rotation, the center beat is smaller, and it is more conducive to sealing.
  • the seal assembly is radially displaced with the swivel body along the centerline.
  • the circumferential limiting member can be in various forms, and the sealing assembly can be circumferentially fixed during the radial floating process, and the circumferential limiting member limits the circumferential direction of the sealing assembly, and the sealing assembly is The rotational friction generated when the rotating body rotates is directly unloaded on the fixed body, thereby avoiding the frictional resistance generated by the sealing assembly from being transmitted to the flexible connecting body, so that the flexible connecting body has a longer service life.
  • the flexible connecting body can adopt rubber products and has strong flexibility, which can effectively ensure that the flexible connecting body is deformed, oscillated and tilted with the rotation of the rotary kiln, and compensates for the positional change between the fixed body and the rotating body through the complicated movement of the flexible connecting body.
  • the utility model solves the effect that the sealing assembly may generate circumferential torque force on the flexible connecting body during the rotary sealing process, so that the flexible body reduces the force as much as possible, and at the same time, the many problems generated in the rotary sealing caused by the rotating body jumping are well solved. problem.
  • the circumferential limiting member is disposed on the fixing body, or may be disposed on the other fixing body, or even disposed in the flexible connecting body, as long as the force can be applied to the sealing assembly to prevent the circumferential movement thereof.
  • the present invention provides a follower support mechanism on the seal assembly, and the follower support mechanism defines a coaxiality between the seal assembly and the rotating body, so that the seal and the rotating body have two rotation centers There should be no large deviation between them, so that the center of the sealing ring in the sealing assembly can not be greatly deviated from the center of rotation of the rotating body, the distance between the sealing assembly and the rotating body is more uniform, and the normal sealing compensation gap capacity of the sealing ring is obtained.
  • the follow-up support mechanism not only ensures proper clearance with the rotating body, but also does not cause a stuck phenomenon at a certain contact portion, and the gap between the supporting support mechanism and the rotating body cannot be too large to ensure sealing; if not If the gap between the supporting mechanism or the follower supporting mechanism and the rotating body is too large, the sealing assembly cannot be coaxial with the rotating body, and the gap between the sealing assembly and the rotating body may be severely uneven, and the sealing ring of the sealing assembly The center and the center of the rotating body are too far apart, and the sealing of the sealing ring may cause two phenomena at the same time.
  • the follower support mechanism has various implementation forms, and sliding or rolling mechanisms are arranged on both sides or in the middle of the seal assembly, and the seal assembly is always in the circumferential relative motion with the rotating body, and the coaxiality between the seal assembly and the rotating body is always ensured.
  • the seal assembly always jumps with the center of the rotating body in the radial direction of the rotating body, and the coaxiality between the two is in a certain range in the process of the center jump.
  • the relative motion of the two is not affected, and the compensation ability of the sealing ring fully meets the need of the sealing gap to achieve a reliable sealing of the two.
  • the sealing assembly includes a sealing frame body, and a sealing ring, a sealing ring positioning ring and a sealing ring gland are disposed in the sealing frame body.
  • a flange is disposed between the fixed body and the flexible connecting body to facilitate installation of the device.
  • the dust-shielding part is arranged to reduce the dust entering the part between the sealing component and the rotating body, so as to reduce the wear on the sealing ring, and can also play a good heat insulation function, thereby reducing the high temperature in the kiln to the flexible connecting body and the sealing ring.
  • Thermal radiation protects flexible connectors and seals.
  • a cooling device is arranged between the cylinder and the rotating body to cool the gas entering the sealing zone, which is more favorable for reducing the temperature resistance requirements of the flexible connecting body and the sealing ring material, and improving the life of the flexible connecting body and the sealing ring.
  • a retaining ring is fixed on the outer wall of the kiln head, and the friction between the retaining ring and the flange of the cylinder is not suitable, and the retaining ring is suitable. Together with the cooling device, it acts as a ash blocking and heat radiation prevention.
  • a wheel belt is disposed between the sealing assembly and the rotating body, and the sliding friction between the sealing assembly and the rotating body needs to smooth the rotating body and the sealing assembly contact part to reduce friction and improve the sealing effect of the sealing assembly on the rotating body; It is very difficult to perform local grinding and smoothing on a large rotating body, and the use of the belt is equivalent to reducing the processing size.
  • the size of the belt is smaller than that of the rotating body, and it is easy to process the surface. It is easy to install, repair and replace. At the same time, it can open the distance between the seal assembly and the rotating body, reduce the heat from the rotating body to the sealing assembly, improve the sealing performance and increase the life of the sealing assembly.
  • a ring plate is disposed between the wheel belt and the rotating body at one end of the flexible body and welded and sealed, and the purpose thereof is to ensure that there is no problem of air leakage between the wheel belt and the rotating body and the rotating body.
  • the sealing ring of the sealing assembly, the sealing ring positioning ring and the sealing frame body are provided with a grease passage, which can conveniently realize the injection of grease into the sealing ring and reduce the friction between the sealing ring and the wheel belt fixed by the kiln head. Extend the life of the seal.
  • the sealing ring is a Y-shaped or J-shaped sealing ring, and the Y-shaped or J-shaped sealing ring has the characteristics of large size compensation, and the compensation amount mainly depends on the lip ring of the Y-shaped or J-shaped sealing ring, and the lip ring has The large elastic compensation capability, there is no gap or gap between the rubber and the rotating belt of the rotating body, and the sealing effect is much higher than the sealing effect of the fish scales and the like.
  • Embodiment 1 is a schematic structural view of Embodiment 1 of the present invention.
  • FIG. 2 is a schematic structural view of a sealing assembly in the first embodiment
  • FIG. 3 is a schematic structural view of a sealing assembly in the second embodiment
  • Embodiment 4 is a schematic structural view of Embodiment 3.
  • Figure 5 is an enlarged view of the sealing assembly, the limiting member and the limit matching member of the third embodiment
  • Figure 6 is a schematic structural view of Embodiment 4.
  • Figure 7 is a schematic structural view of Embodiment 5.
  • Figure 8 is a schematic structural view of Embodiment 6;
  • Figure 9 is a schematic structural view of Embodiment 7.
  • Figure 10 is a schematic structural view of Embodiment 8.
  • Figure 11 is a schematic view showing the structure of the ninth embodiment.
  • Embodiment 1 is a diagrammatic representation of Embodiment 1:
  • a rotary sealing mechanism is disposed between the fixed body 1 and the rotating body 2, the diameter of the fixed body is larger than the diameter of the rotating body, and the fixed body and the rotating body can be regarded as a rotary kiln.
  • the kiln head cover and the kiln body of the rotary kiln comprising: a sealing assembly 3 disposed on the outer circumference of the rotating body 2 and rotatably connected to the rotating body 2, the sealing assembly 3 and the fixing body 1 being connected
  • the flexible connecting body 4; the flexible connecting body 4 may be a high-temperature resistant rubber product or other product with good dimensional compensation performance, which compensates for the beating and reliable sealing.
  • the sealing assembly 3 includes a sealing frame body 7.
  • the sealing frame body 7 is provided with a sealing ring 9, a sealing ring positioning ring 8, and a sealing ring gland 10, and the sealing ring 9 is a J-shaped sealing ring and a J-shaped sealing ring.
  • the sealing lip design has a large diametrical bandwidth, a bandwidth of 10-20 mm, and a compensation capability of 5-10 mm on one side.
  • the rubber sealing ring is made of silicone rubber or fluororubber or hydrogenated nitrile rubber. (HNBR), temperature resistance up to 250 °C.
  • the circumferential limiting member includes a limiting fitting member 5 disposed on the sealing frame body 7, and the limiting fitting member 5 is a limiting orifice plate or a positioning stopper or a positioning baffle; the limiting seal provided on the fixing body 1
  • the limiting member 6 that rotates the assembly 3 in the circumferential direction is a supporting rod.
  • One end of the limiting member 6 is fixed on the fixing body 1.
  • the other end of the limiting member 6 extends into the limiting hole of the limiting fitting member.
  • the limiting orifice plate 5 has a space in the radial direction and the circumferential direction of the rotating body, so that the limiting member 6 can be in the radial direction of the rotating body during the rotation of the rotating body.
  • the inner space is free to move, and the space in the limiting orifice plate 5 along the circumferential direction of the rotating body is limited, and only the limiting member 6 and the limiting fitting member 5 are not fixed, and the limiting orifice plate 5 is prevented from moving in the circumferential direction. Therefore, the seal assembly 3 can be rotated radially with the rotating body 2, and the left and right, upper and lower sides jump along the center line without circumferential rotation.
  • Embodiment 2 is a diagrammatic representation of Embodiment 1:
  • the difference between the second embodiment and the first embodiment is that the sealing assembly 3 is provided with the follower support member 11 on both sides of the sealing frame body 7 and the sealing ring gland 10 .
  • the movable supporting member 11 is a supporting roller, and the supporting roller is a wear-resistant material, which can roll on the outer circumference of the rotating body to ensure the coaxiality requirement of the sealing assembly 3 and the rotating body 2 without affecting the sealing.
  • a certain gap is provided between the follow-up support roller and the rotating body, so as to avoid a slight ellipse or deformation of the rotating body due to the small ellipse of the rotating body, and there is no gap in a certain moving part, and the phenomenon of sticking may occur.
  • Movement prevents the gap from being too large, so that the gap between the sealing ring and the follower supporting roller and the rotating body is too large, and a gap leakage phenomenon occurs, or the partial gap is too small, and the lip of the sealing ring is cracked.
  • Embodiment 3 is a diagrammatic representation of Embodiment 3
  • a rotary sealing mechanism is disposed between the fixed body 1 and the rotating body 2, and the fixed body 1 is That is, the kiln head cover of the rotary kiln, the rotary body 2 is a kiln body of the rotary kiln, and the rotary seal mechanism includes: a seal assembly 3 disposed on the outer circumference of the rotary body 2 and rotatably connected to the rotary body 2; the seal assembly 3
  • the flexible connecting body 4 connected to the fixing body 1; the flexible connecting body 4 may be a high-temperature resistant rubber product or other product with good dimensional compensation performance, which compensates for the beating and reliable sealing.
  • the sealing assembly 3 includes a sealing frame body 7.
  • the sealing frame body 7 is provided with a sealing ring 9, a sealing ring positioning ring 8, and a sealing ring gland 10.
  • the sealing ring 9 is a Y-shaped sealing ring and a Y-shaped sealing ring.
  • the sealing lip design has a large diameter in the radial direction, the bandwidth can be up to 10-20 mm, and the compensation capability can be 5-10 mm on one side.
  • the rubber sealing ring is made of silicone rubber or fluororubber or hydrogenated nitrile rubber. HNBR), temperature resistance up to 250 °C.
  • the sealing assembly 3 is provided with a follower support member 11 on both sides of the sealing frame body 7 and the sealing ring gland 10, and the following supporting member 11 is a supporting ring or a supporting block, and the supporting ring or the supporting block is a wear-resistant material, which can be Rotate on the outer circumference of the rotating body.
  • the limiting fitting member is disposed on the sealing component 3 to limit the orifice plate 5, and the fixing body 1 is provided with a limiting component support frame 6 for restricting the circumferential rotation of the sealing assembly 3, and the fixing body 1 passes through the flange and the
  • the flexible connecting body 4 is connected, and the other end of the flexible connecting body 4 is connected to the sealing frame body 7 through a flange.
  • the limiting fitting member limiting hole plate 5 is disposed on the flange of the sealing frame body, and the limiting member One end of the support frame 6 is disposed on the kiln head cover, and the other end extends into the end of the limit fitting member 5 to block the rotation of the limit fitting member 5, and the limiting member 6 does not limit the radial direction of the rotating body, so that the sealing assembly 3
  • the radial direction jumps along the center line with the rotating body 2 and does not move circumferentially.
  • a cylinder 12 is disposed between the fixed body and the flange connected thereto, and the diameter of the cylinder 12 is between the diameter of the fixed body 1 and the diameter of the rotating body 2, and the cylindrical body 12 is a part of the fixed body 1,
  • a labyrinth ash insulation wall 14 is disposed between the cylinder 12 and the rotating body 2. The labyrinth ash insulation wall 14 prevents ash generated in the kiln from entering the seal assembly and causing damage to the seal assembly.
  • a grease passage 15 is disposed on the seal assembly.
  • Embodiment 4 is a diagrammatic representation of Embodiment 4:
  • the wheel belt 16 is disposed between the sealing assembly 3 and the rotating body 2, one is the need to reduce friction, and the other is the need for sealing, three It is a need for processing convenience, and the fourth is the need for easy installation. That is, the smooth outer surface of the belt can reduce the friction and improve the sealing performance between the sealing assembly and the belt 16; the contact portion is smoothed to reduce the friction and improve the sealing effect, and the large super long rotating body It is very difficult to perform local grinding process. It is more difficult to proofread the long rotating body during installation. Therefore, the wheel belt can solve the series of problems, and the distance between the sealing component 3 and the rotating body 2 can be opened by using the wheel belt 16.
  • the size of the wheel belt is smaller than that of the rotating body, facilitating the processing of its surface.
  • a ring plate 24 is disposed between the wheel belt 16 and the rotating body 2 at one end of the flexible body 4 and welded and sealed. The purpose is to ensure that there is no problem of air leakage between the wheel belt and the rotating body.
  • a spiral blade 21 is disposed between the belt 16 and the rotary kiln 2, and the natural air cooling is forced along with the rotation of the rotary kiln to reduce the temperature of the belt 16 and prevent the surface temperature of the belt from being too high to affect the sealing and sealing assembly. life.
  • Embodiment 5 is a diagrammatic representation of Embodiment 5:
  • the fifth embodiment is provided not only between the rotating body 2 and the sealing assembly 3, but also between the rotating belt 2 and the rotating body 2.
  • One end of the flexible body 4 is provided with a ring plate 24 and welded and sealed, and the purpose thereof is to ensure that there is no problem of air leakage between the wheel and the rotating body and the rotating body.
  • a cooling nozzle 22 is disposed outside the belt, and water is cooled to the gap between the belt and the rotary kiln.
  • the fixed body 1 is a kiln cover, and a cylinder is disposed between the fixed body 1 and the flange to which it is connected.
  • the cooling box 13 and the ash insulation wall 14 are disposed between the cylinder and the rotating body 2.
  • the function of the cooling box 13 is to set the high temperature in the rotary kiln, and to effectively reduce the temperature at the cooling box, thereby greatly reducing the heat transfer of the radiant heat in the kiln to the flexible connecting body 4 and the sealing assembly 3, so that the flexible connecting body 4 and the sealing assembly 3
  • the life is extended more; the setting of the cooling box 13 and the ash wall 14 also serves as a ash blocking effect.
  • a rotary sealing mechanism is provided between the fixed body 1 and the rotating body 2, and the inner circumference of the rotating body 2 is disposed
  • the rotating assembly 2 is rotatably connected to the sealing assembly 3; the sealing assembly 3 and the flexible connecting body 4 to which the fixed body 1 is connected; the flexible connecting body 4 may be a high temperature resistant rubber product or other product with good dimensional compensation performance. It compensates for the beating and reliable sealing.
  • the sealing assembly 3 includes a sealing frame body, and a sealing ring, a sealing ring positioning ring and a sealing ring gland are disposed in the sealing frame body, and the sealing ring 9 is a Y-shaped sealing ring, and the sealing lip of the Y-shaped sealing ring is designed. Large diameter in the diameter direction, the bandwidth size can reach 10 ⁇ 20mm, and the compensation capacity can reach 5 ⁇ 10mm on one side.
  • the rubber seal ring is made of silicone rubber or fluororubber or hydrogenated nitrile rubber (HNBR). 250 ° C.
  • the sealing assembly 3 is provided with a follower support member on both sides of the sealing frame body and the sealing ring gland.
  • the following supporting member is a supporting ring or a supporting block, and the supporting ring or the supporting block is a wear-resistant material, which can be on the circumference of the rotating body. Swipe or scroll.
  • a limiting engaging member 5 is disposed on the sealing assembly 3, and the fixing body 1 is provided with a limiting member 6 for restricting the circumferential rotation of the sealing assembly 3.
  • the limiting member 6 is fixed at one end to the fixed body and the other end is extended.
  • the end portion of the mating member 5 is not fixedly connected between the limiting member 6 and the limiting engaging member 5.
  • the limiting member 6 does not restrict the radial movement of the engaging member 5 with the rotating body, and only the fitting member 5 cannot be restricted with the circumference of the rotating body.
  • the fitting member 5 is disposed on the seal assembly 3 such that the seal assembly 3 radially jumps along the center line with the rotating body 2 and does not move circumferentially.
  • a dust-shielding member is disposed between the inner circumference of the flange and the rotating body, so that dust or gas generated in the kiln body can be prevented from escaping from the connecting member, and the environment is protected from contamination.
  • the circumferential limiting member is disposed on the fixed body and the rotating body, and the circumferential limiting function of the sealing assembly can also be realized.
  • the stopper 17 is provided on the sealing assembly 3, on the outside of the fixed external rotating body, such as a support rod 18 disposed on the ground below the sealing assembly, the supporting rod 18 cooperates with the stopper 17, which can block the sealing assembly 3 from rubbing in the circumferential direction.
  • the effect of force on the circumference Rotation, and at the same time because of the proper amount of clearance between the two, can also meet the radial movement of the seal assembly 3.
  • a support rod is arranged under the sealing assembly, the force of the support rod is better, and the support rod is firm and reliable.
  • the circumferential limiting member is disposed in the flexible connecting body, and the circumferential limiting function of the sealing assembly can also be realized.
  • the elastically suitable metal strip 19, or other non-metallic material, or the spring, which is disposed in the flexible connecting body 4, can realize or substantially realize the radial movement of the sealing assembly connected to one side of the flexible connecting body, and the circumferential direction is basically Do not move.
  • the seal assembly 3 includes a follower support member 11 not only at a portion in contact with the rotating body or the belt, but also ensures that the seal ring 9 operates normally, and a rolling frame 20 is disposed on the rotating body or the belt.
  • the seal assembly is disposed between the rolling frame 20 and the rotating body 2, and by the plurality of rolling members provided on the sealing assembly 3, in combination with the rolling frame 20, it is ensured that the gap between the sealing assembly and the rotating body is suitable and can be secured. Even the material of the flexible body itself has the ability to define the circumferential rotation of the rotating body connected thereto, and the radial direction can be appropriately adjusted to achieve the technical solution protected by the present invention.

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Abstract

一种旋转密封机构，设置在固定体（1）和旋转体（2）之间，它包括：旋转体（2）圆周上设置的与旋转体（2）旋转连接的密封组件（3）；密封组件（3）和固定体（1）连接的柔性连接体（4）；密封组件（3）上设置周向限位部件。旋转密封机构将固定体（1）和旋转体（2）之间的跳动补偿和密封结合起来，完全实现了可靠的旋转密封。

Description

旋转密封机构 技术领域
本发明涉及旋转密封机构技术领域，特别涉及回转窑的密封机构技术领域。
背景技术
回转窑广泛应用于建材、冶金、化工、环保等领域，按处理物料不同，可分为水泥窑，冶金化工窑和石灰窑。水泥窑主要用于煅烧水泥熟料；冶金化工窑主要用于冶金行业钢铁厂贫铁矿磁化焙烧；铬、镍铁矿氧化焙烧；耐火材料厂焙烧高铝矾土和铝厂焙烧熟料、氢氧化铝；化工厂焙烧铬矿砂和铬矿粉等；石灰窑用于焙烧钢铁厂用的活性石灰和轻烧白云石。上述这些回转窑有一个共同特征：物料被加热的过程是外来燃气或物料本身含有煤或重油等燃料与空气在回转窑内燃烧，物料被直接加热，有些需要还原的物料，则通过控制回转窑内的空气量，使回转窑内不能完全燃烧，产生还原性气氛，如一氧化碳，但一氧化碳浓度是相对较低的，窑内漏进点空气，或窑内漏出点浓度较低的还原性气体，对回转窑的安全性没有重大危害，因此，这些回转窑虽然也需要密封，但由于回转窑的跳动大，窑内温度高，做真正的密封，困难很大，通常通过鱼鳞密封，半柔性密封(还是鱼鳞密封的一种形式，只是这种半柔性密封相当于两次鱼鳞密封，中间加了一层碳硅镍柔性复合板，相应较单层鱼鳞密封漏气会少许多)，迷宫型密封，盘根密封等，以上这些只能进行防止大气量泄漏的密封，密封效果不够理想，很难保证对大气没有污染，粉尘和气体很容易从窑体内溢出。另外，外部的空气不可避免的进入窑体内，造成内部化学反应环境的不纯净，影响反应的效果，且不仅不能做到完全密封，而且在使用的过程中，密封机构的使用寿命常常会因为旋转体的中心跳动而大大降低。而煤或生物质热解，产生的煤气甲烷、一氧化碳、氢气含量高，热值高，如果在密封处，无论是空气进入回转窑，还是煤气从回转窑泄漏出来，都对造价很高的热解设备造成极大的安全威胁，容易影响反应的效果，这就需要安全、可靠、有效的不泄漏的旋转密封。
申请人：爱沙尼亚能源石油工业股份有限公司，名称：回转窑端部密封组件、公开(公告)号102741596A的专利公开了回转窑的端部密封组件以及对其端部密封件(16)的改进；而用在端部密封件中的第一和第二壳体环(2，3)由至少四个部分组成，并且在旋转壳体环(1)的两侧上已形成有用于润滑剂的矩形切口的凹陷(81，91)；并且相应地，在与第一和第二壳体环(2，3)的旋转壳体环组装的一侧上已形成有用于润滑剂的凹陷(82，93)，该凹陷在制造时面向壳体环的相应凹陷(81，91)，形成端部密封组件的壳体环(1)与第一和 第二壳体环(2，3)之间的润滑剂通道(8，9)。只是能够很好地解决润滑的问题，但是对旋转体的跳动没有办法。
公开号为CN 104515382 A，申请人为沈阳铝镁设计研究院有限公司，发明名称一种回转窑的密封装置，它适用于各种回转窑对气流及灰尘的密封，该密封装置套装于回转窑筒体上，通过摩擦块与回转窑筒体之间形成密封机构，密封装置的一端通过连接板与窑头罩或窑尾罩连接；该密封装置包括：连接板、固定板、前楔块、后楔块、滑轮架、滑轮、钢丝绳、配重砣、摩擦块。该发明密封装置虽具有较好的密封效果，结构可靠、维修方便、防止物料泄漏、保护环境、节约能源的特点，解决现有技术中筒体受热产生轴向位移及径向跳动，导致窑头、窑尾密封失效等问题，但摩擦块与回转窑筒体之间，以及摩擦块与摩擦块之间，在运动过程中是存在间隙的，其密封仍然只能保证没有大的泄漏，刚性之间的密封仍然不能保证气体的不泄漏。
发明内容
本发明针对现有技术之不足，提供一种旋转密封机构，以彻底解决因为旋转体的中心跳动影响旋转密封的技术问题。
一种旋转密封机构，设置在固定体和旋转体之间，它包括：所述旋转体圆周上设置的与所述旋转体旋转连接的密封组件；所述密封组件和所述固定体连接的柔性连接体；所述密封组件上设置周向限位部件。
所述密封组件上设置的随动支撑机构，所述随动支撑机构限定密封组件与所述旋转体的同轴度。
所述密封组件包括密封架体，所述密封架体内设置密封圈、密封圈定位环、密封圈压盖。
所述固定体与所述柔性连接体之间设置法兰。
所述密封组件上设置润滑脂通道。
所述固定体与其所连接的固定体法兰之间设置筒体，所述筒体的直径尺寸在固定体直径与旋转体直径尺寸之间，此筒体可以是固定体的一部分，所述筒体与旋转体之间设置迷宫式挡灰隔热墙。
所述固定体与其所连接的固定体法兰之间设置筒体，所述筒体的直径尺寸在固定体直径与旋转体直径尺寸之间，此筒体可以是固定体的一部分，所述筒体与旋转体之间设置降温装置。
所述密封组件与旋转体之间设置轮带，所述轮带与旋转体之间靠近柔性体的一侧设置 环板并焊接密封。
所述旋转体与轮带间设置降温机构，进一步的是，此机构可以是风冷机构或水冷机构。
本发明针对旋转密封特别是中大型设备中的旋转密封中容易出现的旋转体中心跳动带来的密封不严、密封效果差、密封部件寿命短的问题，创造性地将旋转体与固定体之间的旋转密封做了分解处理，即由旋转密封分解为旋转体与密封组件之间的旋转密封，密封组件与固定体之间的柔性跳动密封。这样将原来的旋转、跳动、扭动、滑移，集中在一起的复杂密封，转变为一个单一旋转密封和一个将跳动、扭动、滑移的多项运动转变为一个吸收跳动、扭动、滑移的柔性变化的柔性密封；这两种密封都是可以达到完全密封的。
在所述旋转体圆周上设置与旋转体旋转连接的密封组件，密封组件和旋转体接触，在确保密封组件和旋转体接触的过程中，实现密封组件与旋转体之间的良好旋转密封，所述密封组件通过柔性连接体与所述固定体连接，柔性连接体一端与密封组件连接，另一端与所述固定体连接，在旋转体旋转的过程中，密封组件与旋转体相对运动，但是其在相对运动的过程中，径向随着旋转体上下左右跳动，而密封组件在跳动的过程中，与所述固定体是通过柔性连接体连接，柔性连接体自身是柔软的，可以发生各种形变，特别是径向方向上的形变，不会将密封组件上的位置变化传导到固定体上，就可以实现了固定体的不动与密封组件跳动的长期共存，互不影响，密封组件在理想轴线和实际动态轴线之间位置的频繁动态变动，会由柔性连接体通过自身柔性自动消化，柔性连接体可以确保固定体与密封组件之间的位置上的互不干涉，又能实现固定体和密封组件之间的可靠密封。
在旋转密封的设计过程中，所属技术领域的技术人员的理念都集中在如何让旋转体的旋转过程中的中心跳动更小，或是最好在一个非常小的范围内，以适应固定体与旋转体之间密封件的形变，也就是说，从各个方面来减小旋转体的跳动是所属技术领域的技术人员在做旋转密封设计时的技术心理推进方向，这是所属技术领域技术人员最重要的方向。而在旋转体的旋转过程中的中心跳动不能够达到理想尺寸的时候，所属技术领域的技术人员一般是想办法增加密封件的形变尺寸和变形能力，让密封件的形变尺寸变大，以适应旋转体的旋转中心跳动幅度，尽可能地减小漏气。更为重要的是，在旋转密封设计的思路上无论是大型设备还是小型设置，旋转体和固定体之间更紧凑，更小间距是实现一切密封的着眼点和立足点，所以更精密制造材料，更高端设计工艺以更好的减小旋转体中心跳动和增加密封件形变尺寸为方向。断然不会想到用一种与旋转密封完全不相干的部件去允许和补偿旋转体中心跳动的跳动，也就是说，本发明将旋转体与固定体之间的旋转密封做的分解处理，即由旋转密封分解为旋转体与密封组件之间的旋转密封，密封组件与固定体之间的柔性跳动密封，是与所属 技术领域的技术人员的常规设计是完全不同的设计方向，所属技术领域的技术人员没有任何理由得到用柔性连接体来连接旋转密封的技术启示，用于解决旋转体跳动过程中旋转体与固定体之间的旋转密封问题。
另外，特别惊奇的是，在旋转体的旋转过程中，柔性连接体不仅能够适应旋转体在中心跳动时，密封组件在径向的跳动问题，让密封组件在径向随旋转体一起跳动，来确保密封组件与旋转体的同轴度问题，密封组件内密封件所受的压力和形变在正常范围内，提高其密封效果和密封件的寿命。同时，在旋转体的旋转的过程中，密封组件中的密封件受到旋转体的摩擦，在周向上受到的力，会卸荷到柔性体上，密封组件在周向的位置也会发生变化，柔性连接体自身的特点决定，也可以允许密封组件在周向的位置发生一定的扭动变化，这种摩擦旋转力通过柔性体，最终卸荷在固定体上，而造成扭动的反作用力，反作用力又通过柔性体使密封组件转动受限，只能在一个小范围。而且在密封组件在周向旋转后，必然带动柔性连接体一定程度的扭曲，这种扭曲会改变柔性连接体所受到的拉力，这个拉力又限制密封组件继续在周向旋转，所以柔性连接体在密封组件径向跳动和周向转动的合成使用下，允许密封组件径向跳动，限定周向转动，又完成密封组件与固定体之间的密封，是处于动态旋转密封中的关键部件。
更为重要的是，作为柔性连接体和随动支撑机构连接的固定体、密封组件、旋转体，柔性连接体和随动支撑机构是匹配的结合体，分别对应旋转体较大的中心跳动，密封组件与旋转体较稳定的间距、较小的摩擦力、密封件正常的形变和较好的密封效果，只有其较小的摩擦力才能由柔性连接体满足密封组件径向的变化和周向的牵制，所以本发明是一个动态的整体创新体系，是基于旋转密封的创新思路下的一个各部件间相互支撑的技术成果。
更为奇特的是，在中心跳动的旋转体与固定体在工作的过程中，本发明旋转密封机构实际上并不限制旋转体的中心跳动，而让旋转体中心跳动在不影响密封的情况下由柔性连接体补偿中心跳动，使跳动停止向固定体传导，允许密封组件随着旋转体中心跳动，将中心跳动和周向摩擦两个力用柔性连接体有效消除，通过一段时间的运行，旋转体的中心跳动幅度居然会逐渐减小，慢慢会到一个更容易控制的范围内，而且这个速度相比于不是密封部件解放的旋转体而言，速度非常快，甚至可以快到两倍以上。尽管大中型窑体的形状也会在旋转的过程中慢慢发生局部形变，形状更接近理想旋转体，更有利于完成旋转体的旋转，但是像这种更接近于旋转体的速度，确实是让人意想不到的。因为大中型旋转体的结构一般为金属结构形式，体量很大，内部又承载较多的物料，又伴随着高温化学反应过程，没有想到在高温旋转高承载的大中型旋转体或回转设备在旋转的过程中圆筒体形状会如此快的发生形变， 更有利于旋转，中心跳动也更小，也更利于密封。
通过在密封组件上设置周向限位的配合部件和在固定体上设置限位部件，使所述密封组件径向随所述旋转体沿中心线跳动而周向不动。所述周向限位部件可以采用多种形式，均可实现密封组件在径向浮动的过程中周向不动，所述周向限位部件对密封组件周向进行限位，将密封组件在旋转体转动时产生的转动摩擦力直接卸荷在固定体上，从而避免了密封组件产生的摩擦阻力传递给柔性连接体，使柔性连接体有更长的使用寿命。柔性连接体可以采用橡胶制品，柔性较强，可有效地保证柔性连接体随回转窑的转动而变形、摆动和窜动，通过柔性连接体的复杂运动，补偿固定体与旋转体之间位置变化，解决了密封组件在旋转密封的过程中可能对柔性连接体产生周向扭力的作用，使柔性体尽可能减少受力，同时很好地解决了旋转体跳动带来的旋转密封中产生的诸多问题。所述周向限位部件设置在固定体上，也可以设置在其它固定体上，甚至是设置在柔性连接体内，只要能够对密封组件施加力的作用，阻止其周向运动均可。
本发明在所述密封组件上设置了随动支撑机构，通过所述随动支撑机构限定密封组件与所述旋转体的同轴度，使得密封组件内的密封件与旋转体的两个旋转中心之间不能有大的偏差，从而保证密封组件中的密封圈的中心与旋转体的旋转中心不能有大的偏差，密封组件与旋转体周边距离就更均匀，密封圈的正常密封补偿间隙能力得到保证，随动支撑机构既保证与旋转体有适当间隙，不能在某个接触部位产生卡滞现象，同时随动支撑机构与旋转体之间间隙又不能过大，以确保密封；如果没有随动支撑机构或随动支撑机构与旋转体之间间隙过大，密封组件就不可能保证与旋转体同轴，密封组件与旋转体周边的间隙会出现严重的不均匀现象，密封组件的密封圈的中心与旋转体的中心偏距过大，密封圈的密封可能同时产生两种现象，一方面，在间隙过小的部位，密封圈严重变形，甚至密封圈唇边被挤裂、严重磨损，另一方面，在间隙过大的部位，密封圈的最大补偿能力不能填补间隙，造成该部位的漏气。随动支撑机构有多种实现形式，密封组件两侧或者中间设置滑动或者滚动机构，始终保证密封组件一直在和旋转体发生周向相对运动，一直确保密封组件和旋转体之间的同轴度在一定范围内，因为随动支撑机构的存在，使得密封组件在旋转体径向方向一直随着旋转体中心跳动，在随之中心跳动的过程中，两者之间的同轴度在一定范围内，两者的相对运动不受影响，密封圈的补偿能力完全满足密封间隙的需要，实现两者的可靠密封。
所述密封组件包括密封架体，所述密封架体内设置密封圈、密封圈定位环、密封圈压盖。
所述固定体与所述柔性连接体之间设置法兰，便于设备的安装。
设置挡灰部件，是为减少灰尘进入密封组件与旋转体之间的部位，以减轻对密封圈的磨损，另外能够起到很好隔热作用，可减轻窑体内高温对柔性连接体及密封圈的热辐射，保护柔性连接体及密封圈。优选地，所述筒体与旋转体之间设置降温装置，可以冷却进入密封区气体，更有利于降低对柔性连接体及密封圈材质的耐温要求，提高柔性连接体及密封圈的寿命。更优地，在降温装置的外侧，即远离固定体接近密封圈的位置，在窑头外壁上固接一个挡圈，此挡圈与筒体法兰之间以不产生摩擦为宜，挡圈与降温装置共同起挡灰、防热辐射作用。
所述密封组件与旋转体之间设置轮带，密封组件与旋转体的滑动摩擦需要对旋转体与密封组件接触部件进行光滑处理以减小摩擦，并且提高密封组件对旋转体的密封效果；而对大型的旋转体进行局部的磨削光滑处理难度很大，而使用轮带等于减小了加工尺寸，轮带的尺寸相对于旋转体而言体量更少，便于对其表面进行加工，也便于安装、检修和更换，同时可以拉开密封组件与旋转体的距离，减少热量自旋转体向外传导给密封组件，提高密封的性能，增加密封组件的寿命。所述轮带与旋转体之间在有柔性体的一端设置环板并焊接密封，其目的是保证轮带与旋转体之间不存在与旋转体内漏气问题。
所述密封组件的密封圈、密封圈定位环和密封架体上设置润滑脂通道，可以方便地实现向密封圈注入润滑脂，减小密封圈与窑头固接的轮带之间的摩擦，延长密封圈的使用寿命。所述密封圈为Y型或J型密封圈，所述Y型或J型密封圈具有尺寸补偿量大的特点，其补偿量主要依靠Y型或J型密封圈的唇圈，其唇圈有较大的弹性补偿能力，橡胶与旋转体固接的轮带之间不存在间隙或缝隙，其密封效果要远高于鱼鳞片等的密封效果。
附图说明
下面结合附图对本发明的技术方案作进一步描述。
图1为本发明实施例一的结构示意图；
图2为实施例一中密封组件的结构示意图；
图3为实施例二中密封组件的结构示意图；
图4为实施例三的结构示意图；
图5为实施三中密封组件、限位部件、限位配合部件的放大图；
图6为实施例四的结构示意图；
图7为实施例五的结构示意图；
图8为实施例六的结构示意图；
图9为实施例七的结构示意图；
图10是实施例八的结构示意图；
图11是实施例九的结构示意图。
具体实施方式
实施例一：
如图1、图2、所示，一种旋转密封机构，设置在固定体1和旋转体2之间，固定体的直径大于旋转体的直径，所述固定体和旋转体可以认为是回转窑的窑头罩和回转窑的窑体，它包括：所述旋转体2外圆周上设置的与所述旋转体2旋转连接的密封组件3，所述密封组件3和所述固定体1连接的柔性连接体4；柔性连接体4可以是尺寸补偿性能好的耐高温的橡胶制品或者其他制品，起到补偿跳动和可靠密封作用。所述密封组件3包括密封架体7，所述密封架体7内设置密封圈9、密封圈定位环8、密封圈压盖10，所述密封圈9为J型密封圈，J型密封圈的密封唇部设计的直径方向带宽大，带宽尺寸可达10—20mm,补偿能力单边可达5—10mm,优化地，所述橡胶密封圈的材质为硅橡胶或氟橡胶或氢化丁晴橡胶(HNBR)，耐温达250℃。周向限位部件包括密封架体7上设置的限位配合部件5，所述限位配合部件5是限位孔板或定位挡块或定位挡板；所述固定体1上设置的限制密封组件3周向转动的限位部件6是支撑杆，所述限位部件6的一端固定在固定体1上，所述限位部件6的另一端伸入所述限位配合部件的限位孔板5内，限位孔板5沿旋转体径向和周向方向有一定空间，可以让所述限位部件6在旋转体旋转的过程中，在旋转体径向方向的限位孔板5内自由移动，而在沿旋转体周向方向的限位孔板5内空间有限，仅满足于限位部件6和限位配合部件5不固定死，同时阻碍限位孔板5沿周向移动，从而使密封组件3可以径向随所述旋转体2转动，左右、上下沿中心线跳动而周向不发生转动。
实施例二：
如图1、图3所示，实施例二与实施例一的区别，仅在于所述密封组件3在密封架体7和密封圈压盖10的两侧设置随动支撑部件11，所述随动支撑部件11为支撑滚轮，支撑滚轮为耐磨材料，可以在旋转体外圆周上滚动，确保密封组件3与旋转体2的同轴度要求，不致影响密封。所述随动支撑滚轮与旋转体之间设有一定间隙，是避免因旋转体的微小椭圆及随动支撑滚轮的微小椭圆或变形，在某个运动部位没有间隙，出现卡滞现象，不能相对运动，另一方面又防止间隙过大，使密封圈和随动支撑滚轮与旋转体之间缝隙偏大，产生空隙漏气现象，或局部间隙过小，产生密封圈唇边挤裂的现象。
实施例三：
如图4、图5所示：一种旋转密封机构，设置在固定体1和旋转体2之间，所述固定体1是 即回转窑的窑头罩，旋转体2是回转窑的窑体，旋转密封机构包括：所述旋转体2外圆周上设置的与所述旋转体2旋转连接的密封组件3；所述密封组件3和所述固定体1连接的柔性连接体4；柔性连接体4可以是尺寸补偿性能好的耐高温的橡胶制品或者其他制品，起到补偿跳动和可靠密封作用。所述密封组件3包括密封架体7，所述密封架体7内设置密封圈9、密封圈定位环8、密封圈压盖10，所述密封圈9为Y型密封圈，Y型密封圈的密封唇部设计的直径方向带宽大，带宽尺寸可达10—20mm,补偿能力单边可达5—10mm,优化地所述橡胶密封圈的材质为硅橡胶或氟橡胶或氢化丁晴橡胶(HNBR)，耐温达250℃。所述密封组件3在密封架体7和密封圈压盖10的两侧设置随动支撑部件11，随动支撑部件11为支撑环或支撑块，支撑环或支撑块为耐磨材料，可以在旋转体外圆周上滑动。所述密封组件3上设置的限位配合部件限位孔板5，所述固定体1上设置限制密封组件3周向转动的限位部件支撑架6，所述固定体1通过法兰与所述柔性连接体4连接，柔性连接体4的另一端通过法兰与密封架体7连接，所述限位配合部件限位孔板5设置在密封架体的法兰上，所述限位部件支撑架6一端设置在窑头罩上，另一端伸入限位配合部件5端部，挡住限位配合部件5的转动，限位部件6不限制旋转体径向方向，使得所述密封组件3径向随所述旋转体2沿中心线跳动而周向不动。所述固定体与其连接的法兰间设置筒体12，所述筒体12的直径尺寸在固定体1直径与旋转体2直径尺寸之间，此筒体12是固定体1的一部分，所述筒体12与旋转体2之间设置迷宫式挡灰隔热墙14。迷宫式挡灰隔热墙14可以防止窑体内产生的灰进入密封组件，对密封组件造成损害。所述密封组件上设置润滑脂通道15。
实施例四：
如图6所示，与实施例三相比，实施例四中，在密封组件3和旋转体2之间设置了轮带16，一是减小摩擦力的需要，二是密封的需要，三是加工便利的需要，四是安装方便的需要。即光滑的轮带外表面可以减小摩擦力同时提高与密封组件与轮带16之间的密封性能；接触部位进行光滑处理以减小摩擦，提高密封的效果，而对大型超长的旋转体进行局部的磨削处理的难度很大，在安装时，校对超长的旋转体更难，所以设置轮带可解决系列问题，同时使用轮带16可以拉开密封组件3与旋转体2的距离，减轻了回转窑向密封部位的传热。轮带的尺寸相对于旋转体而言体量更小，便于对其表面进行加工。所述轮带16与旋转体2之间在有柔性体4的一端设置环板24并焊接密封，其目的是保证轮带与旋转体之间不存在与旋转体内漏气问题。
另外，在轮带16与回转窑2之间设置螺旋叶片21，随回转窑的转动，强制自然风冷，以降低轮带16的温度，避免轮带表面温度过高而影响密封和密封组件的寿命。
实施例五：
如图7所示：与实施例三和实施例四相比，实施例五不仅在旋转体2和密封组件3之间设置了轮带16，所述轮带16与旋转体2之间在有柔性体4的一端设置环板24并焊接密封，其目的是保证轮带与旋转体之间不存在与旋转体内漏气问题。
另外，在轮带的外边设置冷却喷头22，向轮带与回转窑之间的缝隙喷水冷却，在所述固定体1为窑头罩，固定体1与其所连接的法兰之间设置筒体，筒体与旋转体2之间设置降温箱13和挡灰隔热墙14部件。设置降温箱13的作用是，回转窑内的高温，在降温箱处得到有效降温，大大减轻窑内辐射热对柔性连接体4和密封组件3的热传递，使柔性连接体4和密封组件3寿命得以延长更多；降温箱13和挡灰墙14的设置，还起到挡灰作用。
实施例六:
如图8所示，固定体1的直径小于旋转体2的直径的情况下，一种旋转密封机构，设置在固定体1和旋转体2之间，所述旋转体2内圆周上设置的与所述旋转体2旋转连接的密封组件3；所述密封组件3和所述固定体1连接的柔性连接体4；柔性连接体4可以是尺寸补偿性能好的耐高温的橡胶制品或者其他制品，起到补偿跳动和可靠密封作用。所述密封组件3包括密封架体，所述密封架体内设置密封圈、密封圈定位环、密封圈压盖，所述密封圈9为Y型密封圈，Y型密封圈的密封唇部设计的直径方向带宽大，带宽尺寸可达10～20mm,补偿能力单边可达5～10mm,优化地所述橡胶密封圈的材质为硅橡胶或氟橡胶或氢化丁晴橡胶(HNBR)，耐温达250℃。所述密封组件3在密封架体和密封圈压盖的两侧设置随动支撑部件，随动支撑部件为支撑环或支撑块，支撑环或支撑块为耐磨材料，可以在旋转体内圆周上滑动或者滚动。所述密封组件3上设置的限位配合部件5，所述固定体1上设置限制密封组件3周向转动的限位部件6，限位部件6一端固定在固定体上，另一端伸入限位配合部件5端部，因限位部件6与限位配合部件5之间不是固定连接，限位部件6不限制配合部件5随旋转体径向运动，仅限制配合部件5不能随旋转体周向运动，因配合部件5设置在密封组件3上，使得所述密封组件3径向随所述旋转体2沿中心线跳动而周向不动。所述法兰内圆周与所述旋转体之间设置挡灰部件，可以防止窑体内产生的粉尘或者气体从连接部件逸出，确保环境不受污染。
实施例七：
如图9所示：周向限位部件设置在固定体和旋转体外，也能够实现对密封组件的周向限位功能。如在密封组件3上设置挡块17，在固定体外旋转体的外部，如在密封组件下方的空地上设置支撑杆18，支撑杆18与挡块17配合，可以阻隔密封组件3在周向摩擦力的作用向周向 转动，同时又因为两者之间设置适量的间隙，又可以满足密封组件3在径向的移动。在密封组件下方设置支撑杆，支撑杆的受力状态较好，支撑杆牢固可靠。
实施例八：
如图10所示：周向限位部件设置在柔性连接体内，也能够实现对密封组件的周向限位功能。如在柔性连接体4内设置的弹性合适的金属条19，或者其他非金属材料，或者弹簧亦可以，能够实现或者基本实现与柔性连接体一侧连接的密封组件径向可以移动，周向基本不动即可。
实施例九：
如图11所示：密封组件3包括不仅在与旋转体或者轮带接触的部位设置随动支撑部件11，保证密封圈9正常工作，而且在旋转体或者轮带上设置滚动框20，所述密封组件设置在滚动框20和旋转体2之间，通过在密封组件3上设置的多个滚动部件，结合滚动框20，可以确保密封组件与旋转体的间隙是合适的和能够保障的。甚至柔性体本身的材料具有一定限定与其连接的旋转体周向旋转的能力，而径向可以适当调整，均能够实现本发明所保护的技术方案。
以上所述仅为本发明优选实施例，并不以此限制本发明，比如给料机与回转窑之间的密封等也可以此结构，对于熟悉本领域的技术人员，可以根据需要，对本发明做多种变化，凡在本发明的精神范围和原则之内，所做的任何修改，皆属本发明权利要求的涵盖范围。

Claims (10)

  1. 一种旋转密封机构，设置在固定体和旋转体之间，其特征在于，它包括：所述旋转体圆周上设置的与所述旋转体旋转连接的密封组件；所述密封组件和所述固定体连接的柔性连接体；所述密封组件上设置周向限位部件。
  2. 如权利要求1所述的旋转密封机构，其特征在于：所述密封组件上设置的随动支撑机构，所述随动支撑机构限定密封组件与所述旋转体的同轴度。
  3. 如权利要求1或2所述的旋转密封机构，其特征在于：所述密封组件包括密封架体，所述密封架体内设置密封圈、密封圈定位环、密封圈压盖。
  4. 如权利要求1或2所述的旋转密封机构，其特征在于：所述固定体与所述柔性连接体之间设置法兰。
  5. 如权利要求3所述的旋转密封机构，其特征在于：所述固定体与所述柔性连接体之间设置法兰。
  6. 如权利要求1至5所述任一项的旋转密封机构，其特征在于：所述密封组件上设置润滑脂通道。
  7. 如权利要求4至6所述任一项的旋转密封机构，其特征在于：所述固定体与所述固定体法兰之间设置筒体，所述筒体的直径尺寸在固定体直径与旋转体直径尺寸之间，所述筒体与旋转体之间设置迷宫式挡灰隔热墙。
  8. 如权利要求4至6所述任一项的旋转密封机构，其特征在于：所述固定体与所述固定体法兰之间设置筒体，所述筒体的直径尺寸在固定体直径与旋转体直径尺寸之间，所述筒体与旋转体之间设置降温装置。
  9. 如权利要求1至8所述任一项的旋转密封机构，其特征在于：所述密封组件与旋转体之间设置轮带。
  10. 如权利要求9所述的旋转密封机构，其特征在于：所述旋转体与轮带间设置降温机构。
PCT/CN2017/085424 2016-12-12 2017-05-23 旋转密封机构 WO2018107662A1 (zh)

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RU2019101092A RU2714756C1 (ru) 2016-12-12 2017-05-23 Вращающийся механизм уплотнения
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KR1020187027959A KR102057796B1 (ko) 2016-12-12 2017-05-23 회전식 실링 기구
EP17881008.1A EP3553439B1 (en) 2016-12-12 2017-05-23 Rotating seal mechanism
CA3021151A CA3021151C (en) 2016-12-12 2017-05-23 Rotating seal mechanism
AU2017374531A AU2017374531B2 (en) 2016-12-12 2017-05-23 Rotating seal mechanism
UAA201900770A UA125751C2 (uk) 2016-12-12 2017-05-23 Обертовий механізм ущільнення
ZA2018/07829A ZA201807829B (en) 2016-12-12 2018-11-20 Rotating seal mechanism
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CA3021151C (en) 2020-05-12
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RU2714756C1 (ru) 2020-02-19
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