Carbon ring seal convenient to replace

Abstract

The utility model relates to the technical field of carbon ring seals, and discloses a carbon ring seal convenient to replace, which comprises a lower sleeve shaft, an upper sleeve shaft is arranged above the lower sleeve shaft, and dustproof rings are arranged on the outer end surfaces of the lower sleeve shaft and the upper sleeve shaft. The lower sleeve shaft, the fixing round hole and the clamping column matched with the upper sleeve shaft are arranged, so that the upper sleeve shaft and the lower sleeve shaft can be quickly positioned during connection, primary connection can be completed only by inserting the clamping column into the fixing round hole, the stability of connection of the upper sleeve shaft and the lower sleeve shaft is enhanced by matching with attraction of the magnetic attraction column and the attraction special-shaped ring, and meanwhile, the stability of connection of the upper sleeve shaft and the lower sleeve shaft is improved. The spring in the movable sliding groove provides upward elastic force for the movable sleeve, the direct pressure between the clamping column and the inner wall of the fixed round hole is reduced, the friction force between the clamping column and the inner wall of the clamping suction hole can be reduced through cooperation with the sliding ball in the sliding ball groove, operation is smoother, and the effects of improving the equipment maintenance efficiency and the buffering and supporting effect are achieved.

Description

TECHNICAL FIELD

[0001] The utility model relates to carbon ring sealing technical field, concretely is carbon ring sealing convenient to replace. BACKGROUND

[0002] Carbon ring sealing belongs to one kind of floating seal, and is named because its material is carbon (carbon graphite). Its core structure includes annular sealing cavity, annular shaft sleeve and at least two annular graphite sealing rings (carbon rings) with rectangular section. The small gap of 0.01~0.04mm is kept between the inner diameter of sealing ring and shaft sleeve, and the outer surface of shaft sleeve is coated with wear-resistant layer (such as aluminum oxide or chromium oxide) to enhance durability. Carbon ring sealing adopts throttling type contact floating ring sealing principle, and forms gas film between carbon graphite floating ring and shaft through sealing gas (such as air, nitrogen, etc.). The gas film can realize throttling pressure reduction and effectively prevent high-pressure side gas from flowing to low-pressure side. Its operation logic is similar to bearing oil film principle: when floating ring and shaft are eccentric, the gas film buoyancy generated by shaft rotation can make floating ring automatically adjust to be basically concentric with shaft, forming dynamic balance.

[0003] In modern industrial production, various types of rotating equipment (such as motor, pump, compressor, etc.) are widely used, and carbon ring sealing is a key sealing component in these rotating equipment.

[0004] During long-term operation of traditional carbon ring sealing, carbon ring needs to be replaced regularly due to wear, aging, etc. However, the structure design of traditional carbon ring sealing is often complex, and the replacement process is cumbersome. For example, the installation and disassembly of some carbon ring sealings need to use special tools, and need to be operated according to specific steps, otherwise it may cause damage to the parts, increasing the difficulty and cost of replacement. In order to ensure the stability of carbon ring sealing during equipment operation, the traditional design usually adopts relatively tight connection mode, such as bolt fastening, welding, etc. Although these connection modes can provide high connection strength, the disassembly process is very difficult when carbon ring needs to be replaced, which needs to consume a lot of time and manpower. On the contrary, if a relatively convenient connection mode such as simple plug-in is adopted, although it can facilitate disassembly, the stability of connection will be affected, and the problem of looseness is easy to occur, therefore, a carbon ring sealing convenient to replace needs to be designed. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing carbon ring sealing convenient to replace, solving the technical problem that traditional carbon ring sealing is complex in disassembly and installation process when carbon ring needs to be replaced, needs to consume a lot of time and manpower, increasing equipment maintenance cost and downtime, and achieving the purpose of improving equipment maintenance efficiency.

[0006] In order to achieve the above object, the utility model provides the following technical scheme: carbon ring seal convenient to replace, including lower sleeve shaft, the upper sleeve shaft is provided with the upper sleeve shaft in the upper sleeve shaft, the outer end surface of lower sleeve shaft and upper sleeve shaft is provided with dust ring, replace carbon ring subassembly, replace carbon ring subassembly is arranged in the inside and outside of lower sleeve shaft and upper sleeve shaft, replace carbon ring subassembly includes: convenient replacement part, convenient replacement part is arranged in the inside of lower sleeve shaft and upper sleeve shaft, carbon ring part, carbon ring part is arranged in the inside and outside of lower sleeve shaft and upper sleeve shaft, and carbon ring part is arranged in the inside of convenient replacement part.

[0007] Preferably, the convenient replacement part includes: a fixed circular hole, the fixed circular hole is opened in the top of the lower sleeve shaft, and two are one group, a total of two groups, symmetrically arranged; the inner wall bottom of the fixed circular hole is fixedly installed with a fixed installation column, the top of the fixed installation column is opened with a clamping suction hole, and the inner wall of the clamping suction hole is opened with a sliding ball groove.

[0008] Preferably, the inside circumference of the sliding ball groove is equidistantly provided with a sliding ball, the outer wall of the fixed installation column is opened with a moving sliding groove, the inner wall bottom of the moving sliding groove is fixedly installed with a spring, and the spring is sleeved on the outer wall of the moving sliding groove, the outer wall of the fixed installation column is fixedly installed with a limiting ring, and the limiting ring is arranged above the moving sliding groove.

[0009] Preferably, the inside of the moving sliding groove is slidably connected with a moving sleeve, the moving sleeve is fixedly installed on the top of the spring and extends above the limiting ring, and the inner wall of the clamping suction hole is fixedly installed with a suction profiled ring.

[0010] Preferably, the top of the fixed circular hole is provided with a clamping column, and the clamping column is fixedly installed at the bottom of the upper sleeve shaft, two are one group, a total of two groups, the bottom of the clamping column is fixedly installed with a magnetic attraction column, and the magnetic attraction column is attracted to the suction profiled ring.

[0011] Preferably, the carbon ring part includes: an installation clamping ring groove, the installation clamping ring groove is opened in the outer end surface of the lower sleeve shaft and the upper sleeve shaft; a plurality of clamping holes are equidistantly and uniformly opened in the inside circumference of the installation clamping ring groove; the inside of the installation clamping ring groove is provided with a ring-shaped clamping plate through clamping; and a plurality of connecting clamping columns are equidistantly and fixedly installed in the inside circumference of the ring-shaped clamping plate.

[0012] Preferably, the inner side wall of the ring-shaped clamping plate is fixedly installed with an installation inner layer shaft, and the installation inner layer shaft extends into the inside of the lower sleeve shaft and the upper sleeve shaft; a carbon ring installation ring groove is equidistantly opened in the inner wall circumference of the installation inner layer shaft; and a carbon ring body is fixedly installed in the inside of the carbon ring installation ring groove.

[0013] The utility model provides carbon ring seal convenient to replace. Have the following beneficial effect:

[0014] (1), the utility model discloses a lower sleeve shaft, fixed circular hole is provided with, with the matching of upper sleeve shaft clamping post, make upper sleeve shaft and lower sleeve shaft can be positioned quickly when connecting, only need to insert clamping post into fixed circular hole can complete preliminary connection, improve the connecting efficiency, cooperate with the attraction of magnetic attraction column and the attraction of special-shaped ring ring, strengthen the stability of upper sleeve shaft and lower sleeve shaft connection, also can not make the connection too close and difficult to separate, guarantee the connecting reliability, facilitate the disassembly and installation of upper sleeve shaft and lower sleeve shaft, simultaneously, the spring in the moving sliding slot provides the elastic force of moving sleeve, has certain supporting effect, reduces the direct pressure of clamping post and fixed circular hole inner wall, plays certain buffering effect, protects the connecting component, cooperate with the slide ball in the slide ball groove, can reduce the friction between clamping post and the inner wall of card suction hole, make operation more smooth, reach the effect of improving equipment maintenance efficiency and buffering support.

[0015] (2), the utility model discloses the installation snap ring groove and annular clamping plate, connecting clamping post and card hole are provided with, and this kind of clamping structure is simple and reliable, convenient to dismount and install, cooperate with the installation inner layer axle and carbon ring installation ring groove, provide stable installation position for carbon ring body, cooperate with carbon ring body, can ensure its stability in the process of equipment operation, reduces the equipment failure caused by carbon ring body shaking or displacement, reaches the effect of improving equipment reliability and safety. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 It is overall structure schematic view of the utility model;

[0017] Figure 2 It is side view of carbon ring sealing structure convenient to replace of the utility model;

[0018] Figure 3 It is exploded view of carbon ring sealing convenient to replace of the utility model;

[0019] Figure 4 It is sectional view of carbon ring sealing attraction place structure convenient to replace of the utility model.

[0020] In the drawing: 1 lower sleeve shaft, 2 upper sleeve shaft, 3 dust ring, 4 replace carbon ring assembly, 41 replace convenient part, 411 fixed circular hole, 412 fixed installation column, 413 card suction hole, 414 slide ball groove, 415 slide ball, 416 moving sliding slot, 417 spring, 418 limit ring, 419 moving sleeve, 4110 attraction special-shaped ring ring, 4111 clamping post, 4112 magnetic attraction column, 42 carbon ring part, 421 installation snap ring groove, 422 card hole, 423 annular clamping plate, 424 connecting clamping post, 425 installation inner layer axle, 426 carbon ring installation ring groove, 427 carbon ring body. DETAILED DESCRIPTION

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and intended to explain the present invention, and should not be construed as limiting the present invention. Example

[0023] The present invention addresses the problem that traditional carbon ring seals require complex disassembly and installation processes when the carbon ring needs to be replaced, consuming significant time and manpower, thus increasing equipment maintenance costs and downtime. A preferred embodiment of the easily replaceable carbon ring seal provided by this invention is, for example... Figures 1-4 As shown: The easily replaceable carbon ring seal includes a lower sleeve shaft 1, an upper sleeve shaft 2 above the lower sleeve shaft 1, and dustproof rings 3 on the outer end faces of the lower sleeve shaft 1 and the upper sleeve shaft 2; a replaceable carbon ring assembly 4, which is located inside and outside the lower sleeve shaft 1 and the upper sleeve shaft 2; the replaceable carbon ring assembly 4 includes: a replacement easy part 41, which is located inside the lower sleeve shaft 1 and the upper sleeve shaft 2; and a carbon ring part 42, which is located inside and outside the lower sleeve shaft 1 and the upper sleeve shaft 2, and the carbon ring part 42 is located inside the replacement easy part 41.

[0024] The easy-to-replace part 41 includes: a fixed round hole 411, which is opened on the top of the lower sleeve shaft 1, and there are two sets of two holes, which are arranged symmetrically; a fixed mounting post 412 is fixedly installed on the bottom of the inner wall of the fixed round hole 411, and the top of the fixed mounting post 412 is opened in the suction hole 413, and the inner wall of the suction hole 413 is provided with a ball groove 414.

[0025] Sliding balls 415 are equidistantly arranged on the inner circumference of the ball groove 414. A movable slide groove 416 is provided on the outer wall of the fixed mounting column 412. A spring 417 is fixedly installed at the bottom of the inner wall of the movable slide groove 416 and is sleeved on the outer wall of the movable slide groove 416. A limiting ring 418 is fixedly installed on the outer wall of the fixed mounting column 412 and is located above the movable slide groove 416.

[0026] The mobile sliding groove 416 is internally slidably connected with a mobile sleeve 419, and the mobile sleeve 419 is fixedly installed at the top of the spring 417 and extends above the limiting ring 418, and the inner wall of the clamping hole 413 is fixedly installed with the suction profiled ring 4110.

[0027] The upper part of the fixed circular hole 411 is provided with a clamping column 4111, and the clamping column 4111 is fixedly installed at the bottom of the upper sleeve shaft 2, two of which form a group, and there are two groups in total. The bottom of the clamping column 4111 is fixedly installed with a magnetic attraction column 4112, and the magnetic attraction column 4112 is attracted to the suction profiled ring 4110.

[0028] Further, the lower sleeve shaft 1, the fixed circular hole 411, and the clamping column 4111 of the upper sleeve shaft 2 are matched, so that the upper sleeve shaft 2 and the lower sleeve shaft 1 can be quickly positioned when connected. Only by inserting the clamping column 4111 into the fixed circular hole 411 can the preliminary connection be completed, improving the connection efficiency. The magnetic attraction column 4112 is attracted to the suction profiled ring 4110, enhancing the stability of the connection between the upper sleeve shaft 2 and the lower sleeve shaft 1, and without making the connection too tight to separate. While ensuring the reliability of the connection, the upper and lower sleeve shafts are convenient to disassemble and install. At the same time, the spring 417 in the mobile sliding groove 416 provides an upward elastic force for the mobile sleeve 419, which has a certain supporting effect, reduces the direct pressure between the clamping column 4111 and the inner wall of the fixed circular hole 411, and plays a certain buffering role, protecting the connecting components. In combination with the sliding ball 415 in the sliding ball groove 414, the friction between the clamping column 4111 and the inner wall of the clamping hole 413 can be reduced, making the operation more smooth. Embodiment

[0029] Please refer to Figures 1-4 On the basis of Embodiment One, it is further obtained that the carbon ring part 42 comprises: a mounting clamping ring groove 421, which is opened on the outer end face of the lower sleeve shaft 1 and the upper sleeve shaft 2; a clamping hole 422 is uniformly and equidistantly opened on the inner circumference of the mounting clamping ring groove 421; a ring-shaped clamping plate 423 is arranged by clamping in the inner part of the mounting clamping ring groove 421; and a connecting clamping column 424 is fixedly installed on the inner circumference of the inner part of the ring-shaped clamping plate 423.

[0030] The inner side wall of the ring-shaped clamping plate 423 is fixedly installed with a mounting inner layer shaft 425, and the mounting inner layer shaft 425 extends to the inside of the lower sleeve shaft 1 and the upper sleeve shaft 2. A carbon ring mounting ring groove 426 is equidistantly opened on the inner wall of the mounting inner layer shaft 425, and a carbon ring body 427 is fixedly installed in the inner part of the carbon ring mounting ring groove 426.

[0031] Further, the embodiment is provided with the mounting snap ring groove 421 and the annular snap plate 423, the connecting snap column 424 and the snap hole 422, which is simple and reliable, convenient to disassemble and install, and cooperates with the inner layer shaft 425 and the carbon ring mounting ring groove 426 to provide a stable mounting position for the carbon ring body 427, cooperates with the carbon ring body 427 to ensure the stability during the operation of the equipment, and reduces the equipment failure caused by the shaking or displacement of the carbon ring body 427.

[0032] In use, first, the lower sleeve shaft 1 and the upper sleeve shaft 2 are arranged above and below, and the dustproof ring 3 is arranged at the outer end face of them to play a dustproof role. The carbon ring assembly 4 is arranged inside and outside the lower sleeve shaft 1 and the upper sleeve shaft 2. Then, the fixed circular holes 411 are arranged at the top of the lower sleeve shaft 1, and the fixed circular holes 411 are arranged in two groups, a total of two groups, and are symmetrically arranged. The inner wall bottom of each fixed circular hole 411 is fixedly installed with the fixed mounting column 412, the top of the fixed mounting column 412 is provided with the clamping suction hole 413, the inner wall of the clamping suction hole 413 is provided with the sliding bead groove 414, and the sliding bead groove 414 is provided with the sliding bead 415 inside the circumference at equal intervals. The outer wall of the fixed mounting column 412 is provided with the moving sliding groove 416, the inner wall bottom of the moving sliding groove 416 is fixedly installed with the spring 417, the spring 417 is sleeved on the outer wall of the fixed mounting column 412, the outer wall of the fixed mounting column 412 is further fixedly installed with the limiting ring 418, and the limiting ring 418 is arranged above the moving sliding groove 416. The moving sleeve 419 is slidably connected inside the moving sliding groove 416, the moving sleeve 419 is fixedly installed at the top of the spring 417 and extends above the limiting ring 418, and the clamping suction hole 413 is fixedly installed with the suction special-shaped ring 4110. The bottom of the upper sleeve shaft 2 is fixedly installed with the clamping column 4111, the clamping column 4111 is arranged in two groups, a total of two groups, the bottom of the clamping column 4111 is fixedly installed with the magnetic attraction column 4112, and the magnetic attraction column 4112 is attracted to the suction special-shaped ring 4110. When the upper sleeve shaft 2 and the lower sleeve shaft 1 need to be connected, the clamping column 4111 is inserted into the fixed circular hole 411, the magnetic attraction column 4112 is attracted to the suction special-shaped ring 4110, and the moving sleeve 419 has a certain supporting and limiting effect on the clamping column 4111 under the action of the spring 417, thereby preliminarily realizing the connection of the upper sleeve shaft 2 and the lower sleeve shaft 1.

[0033] Further, the mounting snap ring groove 421 is formed on the outer end surface of the lower sleeve shaft 1 and the upper sleeve shaft 2, and the snap holes 422 are uniformly formed on the inner circumference of the mounting snap ring groove 421. The annular clamping plate 423 is arranged in the mounting snap ring groove 421 by clamping, the connecting clamping column 424 is fixedly arranged on the inner circumference of the annular clamping plate 423, the connecting clamping column 424 is matched with the snap holes 422, and the preliminary fixation of the annular clamping plate 423 in the mounting snap ring groove 421 is realized. The mounting inner layer shaft 425 is fixedly arranged on the inner side wall of the annular clamping plate 423 and extends to the inside of the lower sleeve shaft 1 and the upper sleeve shaft 2. The carbon ring mounting ring groove 426 is formed on the inner wall of the mounting inner layer shaft 425, and the carbon ring body 427 is fixedly arranged in the carbon ring mounting ring groove 426, so that the installation of the carbon ring body 427 is completed.

[0034] When the carbon ring body 427 needs to be replaced, the upper sleeve shaft 2 is lifted upward, the clamping column 4111 is pulled out of the fixed circular hole 411, the separation of the upper sleeve shaft 2 and the lower sleeve shaft 1 is realized, the annular clamping plate 423 is taken out of the mounting snap ring groove 421, the mounting inner layer shaft 425 with the carbon ring body 427 is taken out, the new carbon ring body 427 is installed in the carbon ring mounting ring groove 426, then the mounting inner layer shaft 425 and the annular clamping plate 423 are reinstalled on the lower sleeve shaft 1 according to the reverse steps, finally the upper sleeve shaft 2 and the lower sleeve shaft 1 are reconnected through the cooperation of the clamping column 4111 and the fixed circular hole 411, and the replacement of the carbon ring body 427 is completed.

[0035] Finally, it should be noted that the above only describes the preferred embodiments of the present application and is not intended to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or equivalently replace some technical features. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included in the protection scope of the present application.

Claims

1. A replaceable carbon ring seal comprising a lower bushing (1) characterized in that: The upper end of the lower sleeve shaft (1) is provided with a dustproof ring (3) with the outer end face of the upper sleeve shaft (2); The carbon ring assembly (4) is arranged inside and outside the lower sleeve shaft (1) and the upper sleeve shaft (2); The carbon ring assembly (4) comprises: The replacement convenient part (41) is arranged inside the lower sleeve shaft (1) and the upper sleeve shaft (2); The carbon ring part (42) is arranged inside and outside the lower sleeve shaft (1) and the upper sleeve shaft (2), and the carbon ring part (42) is arranged inside the replacement convenient part (41).

2. The replaceable carbon ring seal of claim 1, wherein: The replacement convenient part (41) comprises: The fixed circular hole (411) is arranged on the top of the lower sleeve shaft (1), and there are two groups of two fixed circular holes (411) arranged symmetrically; The inner wall of the fixed circular hole (411) is fixedly connected with a fixed mounting column (412), and the top of the fixed mounting column (412) is provided with a clamping suction hole (413); 3. The replaceable carbon ring seal of claim 2, wherein: The inner wall of the clamping suction hole (413) is provided with a sliding ball groove (414).

4. The replaceable carbon ring seal of claim 3, wherein: The inner wall of the sliding ball groove (414) is provided with a sliding ball (415), and the outer wall of the fixed mounting column (412) is provided with a moving sliding groove (416); 5. The replaceable carbon ring seal of claim 4, wherein: The inner wall of the moving sliding groove (416) is fixedly connected with a spring (417), and the spring (417) is arranged on the outer wall of the moving sliding groove (416); 6. The replaceable carbon ring seal of claim 1, wherein: The outer wall of the fixed mounting column (412) is fixedly connected with a limiting ring (418), and the limiting ring (418) is arranged above the moving sliding groove (416). The inner wall of the clamping suction hole (413) is fixedly connected with a suction special-shaped ring (4110). The upper end of the fixed circular hole (411) is provided with a clamping column (4111), and the clamping column (4111) is fixedly connected with the bottom of the upper sleeve shaft (2); The carbon ring part (42) comprises: The installation clamping ring groove (421) is arranged on the outer end face of the lower sleeve shaft (1) and the upper sleeve shaft (2); The inner wall of the installation clamping ring groove (421) is provided with a clamping hole (422) at equal intervals, and the inner wall of the installation clamping ring groove (421) is provided with a ring-shaped clamping plate (423) through clamping; The inner wall of the ring-shaped clamping plate (423) is fixedly connected with a connecting clamping column (424).

7. The replaceable carbon ring seal of claim 6, wherein: The inner side wall of the annular clamping plate (423) is fixedly provided with an installation inner layer shaft (425), and the installation inner layer shaft (425) extends to the inside of the lower sleeve shaft (1) and the upper sleeve shaft (2). The inner wall of the installation inner layer shaft (425) is circumferentially and equidistantly provided with a carbon ring installation ring groove (426), and the inside of the carbon ring installation ring groove (426) is fixedly provided with a carbon ring body (427).

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