Shaft seal compensation device and leacher

Abstract

The utility model belongs to the technical field of sealing devices. The shaft seal compensation device comprises a frame assembly and a rotating shaft assembly, and a spherical seal compensation assembly is arranged between the frame assembly and the rotating shaft assembly. The spherical sealing compensation assembly can synchronously and slightly rotate along with the rotating shaft assembly and is used for compensating micro deformation of the rotating shaft assembly. The utility model is used for solving the technical problems of short service life and non-ideal sealing effect of a sealing element caused by micro deformation of a long-span shaft adopted by the leacher. The utility model further discloses an extractor which comprises the shaft seal compensation device.

Description

Technical Field

[0001] The utility model belongs to the technical field of sealing devices, and in particular relates to a shaft sealing compensation device and an extractor comprising the shaft sealing compensation device. Background Art

[0002] As an extraction equipment in the oil extraction process, the extractor must not only ensure the smooth and normal operation of the machine, but also ensure the overall sealing effect, and there should be no leakage. However, after the extractor has been used for a period of time, the rotating shaft seal will be squeezed and worn due to rotation, and the sealing effect will be lost, and solvent will leak out from the shaft seal. Since the solvent inside the extractor is toxic and flammable and explosive, the sealing performance is particularly important for the extractor.

[0003] Based on the structural principle of the extractor, the rotating axis of the extractor works horizontally. When the leaching width of the extractor increases, the length of its axis also increases. When the axis is subjected to bending moment or torque, it will undergo different degrees of micro-deformation, and a drum-like shape will be formed in the middle of the axis during rotation. The extractor requires the box to be sealed, and the sealing device at the wall panel of the box will be deformed due to the bending of the shaft, causing unilateral friction between the shaft and the seal. Such long-term unilateral extrusion and friction will cause the seal to wear and fail quite quickly. Utility Model Content

[0004] The first purpose of the utility model is to provide a shaft seal compensation device to solve the technical problem that the extractor adopts a long-span shaft with micro-deformation, resulting in a short service life of the seal and an unsatisfactory sealing effect.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solution: a shaft sealing compensation device, comprising a frame assembly and a rotating shaft assembly, a spherical sealing compensation assembly being arranged between the frame assembly and the rotating shaft assembly; the spherical sealing compensation assembly can rotate synchronously with the rotating shaft assembly to compensate for the micro-deformation of the rotating shaft assembly.

[0006] The spherical sealing compensation component of the utility model rotates with the rotating shaft component. The spherical sealing compensation component is in a stationary state relative to the rotating shaft component, which effectively protects the rotating shaft component, ensures the coaxiality of the sealing device and the rotating shaft, and avoids the failure of the sealing component due to unilateral squeezing and wear of the slightly deformed rotating shaft; the service life of the sealing component is increased, the number of replacements is reduced, and the labor intensity is reduced; the sealing effect is improved, leakage is avoided, and environmental pollution is avoided.

[0007] In order to solve the technical problem of how to realize the spherical sealing compensation component, the utility model adopts the following technical solution, and the spherical sealing compensation component includes:

[0008] A compensating sealing chamber, sleeved on the rotating shaft assembly;

[0009] A sealing pressure plate is sleeved on the compensating sealing cavity and connected to the frame assembly, and a spherical sealing structure is formed between the sealing pressure plate and the compensating sealing cavity;

[0010] A first sealing member, disposed between the compensating sealing cavity and the rotating shaft assembly;

[0011] The sealing gland is sleeved on the rotating shaft assembly and connected to the compensating sealing chamber. The sealing gland is used to axially compress the first sealing member. The axis of the compensating sealing chamber will slightly deflect along with the rotating shaft assembly, while the sealing pressure plate is fixed and stationary. The compensating sealing chamber can slightly rotate relative to the sealing pressure plate. The compensating sealing chamber slightly rotates within the sealing pressure plate, thereby realizing compensation for slight changes in the axis.

[0012] In order to solve the technical problem of how to realize the compensating sealing cavity, the utility model adopts the following technical solution, and the compensating sealing cavity includes:

[0013] An axial portion, wherein the outer peripheral surface of the axial portion is a spherical surface;

[0014] The inner radial portion is arranged at the end of the axial portion close to the frame assembly; the inner radial portion is used for axial positioning of one end of the first sealing member.

[0015] In order to solve the technical problem of inconvenient assembly of the spherical sealing compensation assembly, the utility model adopts the following technical solution: the sealing pressure plate is an assembled split structure, including a first sealing pressure plate and a second sealing pressure plate that match each other, and the first sealing pressure plate and the second sealing pressure plate are connected by a connecting piece; the first sealing pressure plate and the second sealing pressure plate are correspondingly arranged on the frame assembly;

[0016] There are spherical sealing structures between the first sealing pressure plate and the compensating sealing cavity, and between the second sealing pressure plate and the compensating sealing cavity;

[0017] A seal is provided on the connecting end surface of the first sealing platen and the second sealing platen. The first sealing platen and the second sealing platen are both provided on the frame assembly; the first sealing platen and the second sealing platen are combined into a whole circle, and a sealing flat gasket is used to seal the two. The utility model designs the sealing platen as a split structure, first installs the compensating sealing cavity, then installs the second sealing platen, and finally installs the first sealing platen, which is convenient for assembly. The seal between the first sealing platen and the second sealing platen is preferably a sealing flat gasket.

[0018] In order to solve the technical problem of how to realize the first seal, the utility model adopts the following technical solution, the first seal includes a first seal 1, a plurality of first seals 2, and a first seal 3 arranged along the axial direction of the rotating shaft assembly;

[0019] The first sealing member 1 forms a wedge surface sealing structure with the corresponding end surface of the compensation sealing cavity, and the first sealing member forms a wedge surface sealing structure with the corresponding end surface of the sealing gland. The three types of sealing members are used to improve the sealing effect.

[0020] In order to solve the technical problem of large-scale rotation of the compensating sealing chamber around the axis, the utility model adopts the following technical solution: a limit block is arranged between the sealing pressure plate and the compensating sealing chamber to limit the large-scale rotation of the compensating sealing chamber around the rotating shaft assembly, and to ensure that the spherical sealing compensation assembly can rotate slightly synchronously with the rotating shaft assembly.

[0021] In order to solve the technical problem of how to install and position the guide limit member, the utility model adopts the following technical solution: the sealing pressure plate is radially provided with matching installation limit holes; the limit block is installed in the installation limit hole; the limit block and the sealing pressure plate are matched in axial clearance, and the limit block and the sealing pressure plate are matched in radial clearance.

[0022] In order to solve the technical problem of inconvenient assembly of the guide limiter, the utility model adopts the following technical solution: the limiter block and the compensation seal cavity are an integral structure, the limiter block is arranged on the upper part of the outer ring of the axial part of the compensation seal cavity; the limiter block is inserted into the installation limiter hole. The guide limiter block is an integral part of the compensation seal cavity and is arranged on the upper part of the outer ring of the axial part of the compensation seal cavity; the limiter block is inserted into the installation limiter hole; the limiter block is used to limit the large rotation of the compensation seal cavity around the axis.

[0023] In order to solve the technical problem of material leakage between the sealing pressure plate and the frame, the utility model adopts the following technical solution: a second sealing member is arranged between the sealing pressure plate and the frame to prevent material leakage.

[0024] In order to solve the technical problem that the sealing effect of a single second seal is not ideal, the utility model adopts the following technical solution: the second seal includes a second seal 1 and a second seal 2. The second seal 2 is located on the outside of the second seal 1. The two seals, one outside and one inside, prevent the solvent from leaking from between the first sealing plate and the frame.

[0025] In order to solve the technical problem of material leakage between the first and second sealing pressure plates and the compensating sealing cavity, the utility model adopts the following technical solution: a third sealing member is arranged on the contact surface between the first sealing pressure plate and the compensating sealing cavity, and on the contact surface between the second sealing pressure plate and the compensating sealing cavity.

[0026] In order to solve the technical problem of how to install the third seal, the utility model adopts the following technical solution: two third seal installation grooves are arranged on the first sealing pressure plate and the second sealing pressure plate, and the third seal is arranged on the third seal installation groove.

[0027] In order to solve the technical problem of how to assemble and seal the first and second sealing pressure plates, the utility model adopts the following technical solution: the first sealing pressure plate and the second sealing pressure plate are both two semicircles, the two semicircular ends are installed opposite to each other, and a sealing member is arranged between the two semicircular ends. The sealing member is preferably a sealing flat gasket. Two fastening ears are arranged on the outer sides of the semicircular ends of the first sealing pressure plate and the second sealing pressure plate, and a connecting member is arranged between the fastening ears for fixing the first sealing pressure plate and the second sealing pressure plate to form a whole circle.

[0028] In order to solve the technical problem of high replacement cost caused by the integral structure of the frame assembly, the utility model adopts the following technical solution: the frame assembly includes a wall panel and a fixed seat plate arranged in the center of the wall panel, and a spherical sealing compensation assembly is arranged between the fixed seat plate and the rotating shaft assembly.

[0029] In order to solve the technical problem of how to position and install the limit block, the utility model adopts the following technical solution: the first sealing pressure plate and the second sealing pressure plate are both step structures;

[0030] Two inner and outer second sealing grooves are processed on the end surfaces of the first sealing pressure plate and the second sealing pressure plate in contact with the fixed seat plate;

[0031] An installation limiting hole is provided on the end surface of the first sealing pressing plate and the second sealing pressing plate away from the fixed seat plate, and the installation limiting hole is a stepped hole;

[0032] A limit block is arranged on the outer ring of the axial part of the compensation sealing cavity, and the limit block comprises a radial connection part and an axial limit part, and the axial limit part is arranged in the installation limit hole.

[0033] In order to solve the technical problem of installation and positioning of the compensation seal cavity, the utility model adopts the following technical solution: a center hole is coaxially arranged on the fixed seat plate, and the center hole is used to install the spherical seal compensation component and for the step hole installation and positioning of the sealing pressure plate.

[0034] In order to solve the technical problems of serious wear and material leakage of the rotating shaft assembly, the utility model adopts the following technical solution. The rotating shaft assembly includes a rotating shaft and a sleeve arranged on the rotating shaft. When rotating, the seal will produce friction with the rotating object moving relative to it. The sleeve material is made of a material that is more wear-resistant than the rotating shaft, which replaces the friction between the rotating shaft and the seal. Since the difficulty, cycle and cost of manufacturing the shaft are higher than those of the sleeve, this device improves the economy.

[0035] The rotating shaft is a stepped shaft, and a fourth sealing member is arranged between the shaft sleeve and the corresponding rotating shaft to prevent the solvent from leaking between the shaft sleeve and the rotating shaft.

[0036] The second object of the utility model is to provide an extractor, characterized in that it comprises the shaft seal compensation device described in any one of the above items. BRIEF DESCRIPTION OF THE DRAWINGS

[0037] Figure 1 This is a front view of the shaft seal compensation device of the utility model;

[0038] Figure 2 It is a side view of the shaft seal compensation device of the utility model;

[0039] Figure 3 It is a three-dimensional diagram of the shaft seal compensation device of the utility model;

[0040] Figure 4 It is a three-dimensional diagram of the compensation seal cavity and the double-channel seal pressure plate of the shaft seal compensation device of the utility model;

[0041] Figure 5 It is a three-dimensional diagram of the compensating sealing chamber of the utility model;

[0042] Figure 6 It is a three-dimensional diagram of the first sealing pressing plate of the utility model;

[0043] Figure 7 It is a three-dimensional diagram of the sealing flat gasket between the first and second sealing pressure plates of the utility model;

[0044] In the figure:

[0045] 10. Shaft seal compensation device;

[0046] 100 frame assembly; 110 wall panel; 120 fixed seat plate; 121 center hole;

[0047] 200 rotating shaft assembly; 210 rotating shaft; 211 first rotating shaft; 212 second rotating shaft; 220 bushing;

[0048] 300 spherical seal compensation assembly; 310 compensation seal cavity; 311 axial portion; 312 inner radial portion; 320 sealing pressure plate; 321 first sealing pressure plate; 322 second sealing pressure plate; 340 sealing gland; 350 third seal installation groove; 323 step hole; 330 sealing flat gasket; 331 porous sealing surface; 323 fastening ear;

[0049] 431 installation limit hole; 432 limit block;

[0050] 510 first seal; 511 first seal one; 512 first seal two; 513 first seal three; 520 second seal; 521 second seal one; 522 second seal two; 530 third seal; 540 fourth seal;

[0051] 611 nut; 612 screw; 621 flat washer; 622 nut; 623 bolt; 631 screw; 632 flat washer; 633 nut. DETAILED DESCRIPTION

[0052] The present invention will be further described below in conjunction with the accompanying drawings and specific implementations.

[0053] like Figure 1 As shown, the shaft seal compensation device 10 includes a frame assembly 100 and a rotating shaft assembly 200 .

[0054] The frame assembly 100 includes a wall panel 110 and a fixing seat panel 120. The fixing seat panel 120 is welded at the center of the wall panel 110.

[0055] The fixed seat plate 120 is provided with a center hole 121. The fixed seat plate 120 is processed with a flange mounting hole. The center hole 121 includes a cylindrical hole and a tapered hole arranged in sequence from the outside to the inside. The cylindrical hole is used to install the sealing pressure plate 320.

[0056] The rotating shaft assembly 200 includes a rotating shaft 210 and a sleeve 220 .

[0057] The rotating shaft 210 is a stepped shaft, including a first rotating shaft 211 and a second rotating shaft 212. The outer diameter of the first rotating shaft 211 is greater than the outer diameter of the second rotating shaft 212. A sleeve 220 is sleeved on the second rotating shaft 212. In one embodiment, a fourth seal 540 is disposed between the sleeve 220 and the second rotating shaft 212. Specifically, a seal installation hole is processed on the inner wall of the sleeve 220, and the number of the seal installation holes is preferably 2, and the fourth seal 540 is installed in the seal installation hole.

[0058] The sleeve is sleeved on the rotating shaft, and the left side of the sleeve contacts the shoulder of the rotating shaft. Between the sleeve and the rotating shaft, there are two grooves on the left side inside the sleeve with shaft sealing rings. The two sealing rings are squeezed between the surface of the rotating shaft and the grooves, so that the rotating shaft and the shaft sealing ring and the groove and the shaft sealing ring fit together. The two seals, one on the left and one on the right, prevent the solvent from leaking from between the sleeve and the rotating shaft.

[0059] The sleeve is sleeved on the rotating shaft. Due to the tight fit between the inner ring of the sleeve and the outer ring of the rotating shaft, the sleeve will rotate with the rotating shaft, so the seal is stationary relative to the sleeve. This is mainly to protect the rotating shaft. Because when rotating, the seal will produce friction with the rotating object moving relative to it. The sleeve material is made of a material that is more wear-resistant than the rotating shaft, which replaces the friction between the rotating shaft and the seal. Since the difficulty, cycle and cost of making the shaft are higher than those of the sleeve, the device improves its economy.

[0060] A spherical sealing compensation assembly 300 is disposed between the frame assembly 100 and the rotating shaft assembly 200 ; specifically, a spherical sealing compensation assembly 300 is disposed between the fixed seat plate 120 and the rotating shaft assembly 200 .

[0061] The spherical seal compensation assembly 300 is installed in the central hole 121 of the fixed seat plate 120. The spherical seal compensation assembly 300 includes a compensation seal cavity 310, a seal pressure plate 320, a first seal 510, and a seal gland 340.

[0062] The compensation seal chamber 310 is sleeved on the rotating shaft assembly 200. The installation of the compensation seal chamber 310 is positioned by using the inner spherical surface of the sealing pressure plate 320. The compensation seal chamber 310 and the shaft sleeve 220 are clearance-matched. The compensation seal chamber 310 in the spherical seal compensation assembly 300 can be synchronously slightly rotated with the rotating shaft assembly 200 to compensate for the micro-deformation of the rotating shaft assembly 200.

[0063] In one embodiment, the compensating seal cavity 310 includes an axial portion 311 and an inner radial portion 312. The outer peripheral surface of the axial portion 311 is a spherical surface. A flange mounting hole is machined on the outer end surface of the axial portion 311. A limit block 432 is provided on the outer ring of the axial portion 311. Preferably, the limit block includes a radial connecting portion and an axial limit portion, and the axial limit portion is arranged in the mounting limit hole. The inner radial portion 312 is located at the end of the axial portion 311 close to the frame assembly 100. Preferably, the outer end surface of the inner radial portion 312 is a vertical surface, and its outer end surface is a wedge surface.

[0064] The sealing pressure plate 320 is sleeved on the compensating sealing cavity 310 and connected to the frame assembly 100 . A spherical sealing structure is formed between the sealing pressure plate 320 and the compensating sealing cavity 310 .

[0065] In one implementation, in order to solve the assembly problem of the compensating sealing cavity, the utility model designs the sealing pressure plate 320 as a split structure, specifically including a first sealing pressure plate 321 and a second sealing pressure plate 322 .

[0066] The first sealing plate 321 is semicircular, and a flange mounting hole is machined on the first sealing plate 321. The first sealing plate 321 is flange-connected to the fixed seat plate 120, so that the first sealing plate 321 is mounted on the frame assembly 100. The inner wall of the first sealing plate 321 is machined into a spherical surface, which matches the spherical surface of the axial portion of the compensation sealing cavity 310, so that a spherical sealing structure is formed between the first sealing plate 321 and the compensation sealing cavity 310.

[0067] The second sealing platen 322 is located at the lower part of the first sealing platen 321. The second sealing platen 322 is semicircular. The inner ball diameter of the second sealing platen 322 is the same as the inner ball diameter of the first sealing platen 321. The second sealing platen 322 is processed with a flange mounting hole. A sealing flat gasket 330 is provided on the end face between the second sealing platen 322 and the first sealing platen 321, and a fastening ear 323 is provided on the outer side of the second sealing platen 322 and the first sealing platen 321. The fastening ear 323 has a docking hole. The two semicircular first sealing plates 321 and the second sealing plates 322 are connected into a full circle by a flat washer 621, a nut 622, and a bolt 623. The sealing flat gasket 330 between the semicircular end faces of the first sealing platen 321 and the second sealing platen 322 is tightened by tightening the nut 622. A porous sealing surface 331 is provided on the sealing flat gasket 330. The flange mounting hole of the sealing plate 320 is fixed to the frame assembly 100 by means of screws 631, flat washers 632, and nuts 633. The inner wall of the sealing plate 320 is processed into a spherical surface, which matches the spherical surface of the axial portion of the compensation sealing cavity 310, so that a spherical sealing structure is formed between the sealing plate 320 and the compensation sealing cavity 310.

[0068] In one embodiment, the first sealing pressure plate and the second sealing pressure plate are both step structures; the end faces of the first sealing pressure plate and the second sealing pressure plate in contact with the fixed seat plate are processed with two inner and outer second sealing member sealing grooves correspondingly; the end faces of the first sealing pressure plate and the second sealing pressure plate away from the fixed seat plate are provided with installation limit holes, and the installation limit holes are step holes.

[0069] The installation and positioning of the installation limit holes of the first sealing pressure plate and the second sealing pressure plate are achieved by using the central hole 121 of the fixed seat plate.

[0070] In one embodiment, in order to solve the problem of material leakage between the fixed seat plate 120 and the sealing plate 320 , a second sealing member 520 is installed between the first sealing plate 310 and the frame assembly 100 .

[0071] Specifically, the second sealing member 520 includes at least one sealing member.

[0072] In one embodiment, the second sealing member 520 includes a second sealing member 1 521 and a second sealing member 2 522 . The second sealing member 2 522 is located on the outside of the second sealing member 1 521 . Two sealings are used to improve the anti-leakage effect.

[0073] In one embodiment, in order to solve the problem of material leakage from the interface between the first sealing platen, the second sealing platen and the compensating sealing cavity, the utility model designs a third sealing member 530 between the first sealing platen 321 , the second sealing platen 322 and the compensating sealing cavity 310 .

[0074] Specifically, the inner spherical surface of the first sealing platen 321 is processed with an annular groove as the third sealing member installation groove 350, and the third sealing member 530 is arranged on the third sealing member installation groove 350. The third sealing member installation groove 350 is also designed on the inner spherical surface of the second sealing platen 322, specifically, the inner spherical surface of the second sealing platen 322 is processed with an annular groove as the third sealing member installation groove 350. Two annular grooves are designed on the inner spherical surfaces of the first sealing platen 321 and the second sealing platen 322, and the two annular grooves are relatively formed into a full circle of annular grooves, and the anti-leakage effect is improved through two seals.

[0075] The compensation seal cavity 310 is installed with the sleeve 220 of the rotating shaft assembly 200. The first seal 510 is axially positioned by using the inner radial portion 312 of the compensation seal cavity 310 at one end and the seal gland 340 at the other end.

[0076] In one embodiment, the first seal 510 includes a first seal 1 511, a plurality of first seal 2 512, and a first seal 3 513. The first seal 1 511, the first seal 2 512, and the first seal 3 513 are sequentially installed along the axial direction of the sleeve 220. The first seal 1 511 and the first seal 3 513 are wedge-shaped seals. The first seal 2 512 is an annular seal. The first seal 1 511 forms a wedge surface sealing structure with the corresponding end surface of the compensation seal cavity 310.

[0077] The sealing gland 340 is sleeved on the rotating shaft assembly 200. Specifically, the sealing gland 340 is clearance-matched with the shaft sleeve 220. Specifically, the sealing gland 340 is connected to the compensating sealing chamber 310, and the sealing gland 340 is used to axially compress the first sealing member 510. Specifically, the sealing gland 340 includes a shaft tube portion and a flange portion. A flange hole is machined on the flange portion, and the flange portion is flange-connected to the compensating sealing chamber 310. The end face of the shaft tube portion is wedge-shaped. The sealing gland 340 and the corresponding end face of the first sealing member 513 form a wedge-surface sealing structure.

[0078] The compensation seal chamber 310 is installed on the outer ring of the shaft sleeve 220. Several circles of the first seal 510 are filled in the compensation seal chamber 310. The left side of the first seal 1 511 fits with the inclined surface of the inner radial part of the compensation seal chamber. The sealing gland 340 is installed on the right side of the first seal 3 513. The inclined surface of the left end of the sealing gland 340 fits with the right side of the first seal 3 513. The right side of the sealing gland 340 is equipped with a screw 612 and a nut 611. The left end of the screw 612 is installed in the threaded hole on the right end face of the compensation seal chamber 310. Rotate nut 611 to control the left and right movement of the sealing cover. When the sealing effect is improved, rotate nut 2 to move the sealing cover 340 to the left to push the first seal 510. The first seal 510 has a certain resilience. When pushed by the sealing cover 340, the inner ring of the first seal 510 will tightly hold the outer surface of the sleeve 20, and the outer ring of the first seal 510 will tightly adhere to the inner surface of the compensation seal cavity, so that the gap between the compensation seal cavity 310, the first seal 510 and the sleeve 220 is zero, thereby ensuring sealing.

[0079] The outer ring of the compensation sealing chamber 310 is an arc-shaped spherical surface. There is a first sealing pressure plate outside the arc-shaped spherical surface of the compensation sealing chamber. The inner side of the first sealing pressure plate is also an arc-shaped spherical surface. There is a fixed seat plate on the right side of the sealing pressure plate. The second seal 1 and the second seal 2 are installed between the fixed seat plate and the sealing pressure plate. There is a circle of several threaded holes on the left surface of the fixed seat plate. The sealing pressure plate has several through holes corresponding to the threaded holes on the fixed seat plate. The through holes are connected to the screw holes corresponding to the fixed seat plate through screws 631. Flat washers 632 and nuts 633 are installed and tightened from the right end of screws 631 from left to right, pressing the second seal 1 and the second seal 2, ensuring that there is no leakage between the fixed seat plate and the first sealing pressure plate. The fixed seat plate is installed in the frame of the extractor wall panel around the periphery and is fully welded with the frame, so that the fixed seat plate and the frame become an integral frame component.

[0080] When the rotating shaft undergoes a slight change in rotation, the rotating shaft no longer rotates horizontally around the axis, but rotates in a drum-like manner. In this way, the axis of the rotating shaft that was originally coaxial with the axis of the sealing device becomes angled, and the axis centerline of the compensation seal chamber will deflect slightly along with the rotating shaft and the sleeve, while the sealing pressure plate and the second seal are fixed and stationary. The arc spherical surface on the outer side of the compensation seal chamber can rotate relative to the arc spherical surface of the sealing pressure plate, and the shaft sealing ring (the third seal) between the three is tightly attached to the three. The compensation seal chamber can rotate slightly within the arc spherical surface of the first sealing pressure plate and the arc spherical surface of the second sealing pressure plate, thereby realizing compensation for slight changes in the rotating shaft.

[0081] In one embodiment, a limit block 432 is provided on the compensation sealing cavity 310 to limit the large rotation of the compensation sealing cavity 310 around the rotating shaft assembly. The limit block 432 is matched with the sealing pressure plate 320 in the axial clearance and the limit block 432 is matched with the sealing pressure plate 320 in the radial clearance.

[0082] In one embodiment, the sealing plate 320 is provided with a mounting limit hole 431 for installing a limit block 432. Specifically, the step outer diameter of the sealing plate 320 is provided with a mounting limit hole 431. The limit block 432 is provided on the outer ring of the axial portion 311 of the compensation sealing cavity 310, and the limit block 432 is installed in the mounting limit hole 431.

[0083] Example 2

[0084] An extractor, characterized in that it includes any shaft seal compensation device of Example 1.

[0085] Installation process of shaft seal compensation device:

[0086] The fixed seat plate 120 is fixedly welded in the frame 110, and the rotating shaft 210 is inserted into the center of the fixed seat plate 120, and the fourth seal 540 (shaft seal ring) is installed in the two grooves on the left side of the sleeve 220, and then installed on the rotating shaft 210 together, and the left end surface of the sleeve 220 contacts the shoulder step surface of the rotating shaft 210;

[0087] Put the sealing plate 320 on the outer ring of the compensation sealing chamber 310, and the inner and outer groove sealing planes on the right side of the sealing plate face right, and the arc spherical surface of the outer ring of the compensation sealing chamber 310 is opposite to the arc spherical surface of the inner ring of the sealing plate. Put the limit block 432 in the installation limit hole 431 set on the sealing plate 320, install the second seal 1 521 and the second seal 2 522 on the sealing surface on the left side of the fixed seat plate 120, and then put the sealing plate 320 and the compensation sealing chamber 310 on the shaft sleeve 220 together, the installation hole on the sealing plate 320 is opposite to the threaded hole on the fixed seat plate 120, and use the flat washer 632, nut 633 and screw 631 to temporarily fix the sealing plate 320 without pressing;

[0088] The third sealing member 530 is installed in the two annular grooves of the inner ring of the first sealing plate 321. When the second sealing plate 322 is installed, the second sealing plate 322 and the first sealing plate 321 are sleeved on the outer ring of the compensation sealing chamber 310. The arc spherical surface of the inner ring of the sealing plate 320 is opposite to the arc spherical surface of the outer ring of the compensation sealing chamber 310. The semicircular end surface of the second sealing plate is opposite to the semicircular end surface of the first sealing plate. A sealing flat gasket 330 is installed in the middle. At the same time, the fastening ear 323 hole of the second sealing plate is aligned with the fastening ear 323 hole of the first sealing plate, and fixed but not tightened by the flat washer 621, nut 622 and bolt 623.

[0089] After adjusting the radial clearance between the compensating seal cavity 310 and the shaft sleeve 220, several turns of the first seal 510 are filled into the inner cavity of the compensating seal cavity 310, and then the sealing gland 340 is installed and slightly tightened by the screw 611 and the nut 612;

[0090] After all parts are installed in place, the sealing gland 340, the compensating sealing chamber 310, the second sealing plate 322 and the first sealing plate 321 are adjusted, and then all fasteners on the sealing compensation device are tightened.

[0091] In the description of the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0092] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

[0093] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention, and the contents not described in detail in this specification belong to the prior art known to professional and technical personnel in the field.

Claims

1. A shaft seal compensation device, characterized in that: It comprises a frame component and a rotating shaft component, wherein a spherical sealing compensation component is arranged between the frame component and the rotating shaft component; the spherical sealing compensation component can rotate synchronously with the rotating shaft component to compensate for the micro deformation of the rotating shaft component.

2. The shaft seal compensation device according to claim 1, characterized in that: The spherical seal compensation assembly comprises: A compensating sealing chamber, sleeved on the rotating shaft assembly; A sealing pressure plate is sleeved on the compensating sealing cavity and connected to the frame assembly, and a spherical sealing structure is formed between the sealing pressure plate and the compensating sealing cavity; A first sealing member, disposed between the compensating sealing cavity and the rotating shaft assembly; A sealing gland is sleeved on the rotating shaft assembly and connected to the compensating sealing cavity. The sealing gland is used to axially compress the first sealing member.

3. The shaft seal compensation device according to claim 2, characterized in that: The compensating seal chamber comprises: An axial portion, wherein the outer peripheral surface of the axial portion is a spherical surface; The inner radial portion is arranged at the end of the axial portion close to the frame assembly; the inner radial portion is used for axial positioning of one end of the first sealing member.

4. The shaft seal compensation device according to claim 3 is characterized in that: The sealing pressure plate is an assembled split structure, including a first sealing pressure plate and a second sealing pressure plate that match each other, and the first sealing pressure plate and the second sealing pressure plate are connected by a connecting piece; the first sealing pressure plate and the second sealing pressure plate are correspondingly arranged on the frame assembly; There are spherical sealing structures between the first sealing pressure plate and the compensating sealing cavity, and between the second sealing pressure plate and the compensating sealing cavity; A sealing member is disposed on the connecting end surfaces of the first sealing pressure plate and the second sealing pressure plate.

5. The shaft seal compensation device according to claim 3, characterized in that: The first seal comprises a first seal 1, a plurality of first seal 2s and a first seal 3 arranged along the axial direction of the rotating shaft assembly; The first sealing member 1 forms a wedge surface sealing structure with the corresponding end surface of the compensation sealing cavity, and the first sealing member forms a wedge surface sealing structure with the corresponding end surface of the sealing cover.

6. The shaft seal compensation device according to claim 3, characterized in that: A limit block is arranged between the sealing pressure plate and the compensating sealing cavity, so as to limit the large rotation of the compensating sealing cavity around the rotating shaft assembly and ensure that the spherical sealing compensating assembly can rotate slightly synchronously with the rotating shaft assembly.

7. The shaft seal compensation device according to claim 6, characterized in that: The sealing pressure plate is provided with matching installation limit holes in a radial direction; the limit block is installed in the installation limit hole; the limit block is matched with the axial clearance of the sealing pressure plate, and the limit block is matched with the radial clearance of the sealing pressure plate.

8. The shaft seal compensation device according to claim 7, characterized in that: The limit block and the compensation sealing cavity are an integral structure, and the limit block is arranged on the upper part of the outer ring of the axial part of the compensation sealing cavity; the limit block is inserted into the installation limit hole.

9. The shaft seal compensation device according to claim 4, characterized in that: A second sealing member is arranged between the sealing pressure plate and the frame.

10. The shaft seal compensation device according to claim 9, characterized in that: The second sealing member includes a second sealing member 1 and a second sealing member 2, and the second sealing member 2 is located outside the second sealing member 1.

11. The shaft seal compensation device according to claim 4, characterized in that: A third sealing member is disposed on a contact surface between the first sealing pressure plate and the compensating sealing cavity, and on a contact surface between the second sealing pressure plate and the compensating sealing cavity.

12. The shaft seal compensation device according to claim 11, characterized in that: The first sealing plate and the second sealing plate are provided with two third sealing member installation grooves, and the third sealing member is provided on the third sealing member installation groove.

13. The shaft seal compensation device according to claim 4, characterized in that: The frame assembly comprises a wall panel and a fixed seat plate arranged at the center of the wall panel, and a spherical sealing compensation assembly is arranged between the fixed seat plate and the rotating shaft assembly.

14. The shaft seal compensation device according to claim 13, characterized in that: The first sealing pressure plate and the second sealing pressure plate are both step structures; Two inner and outer second sealing grooves are processed on the end surfaces of the first sealing pressure plate and the second sealing pressure plate in contact with the fixed seat plate; An installation limiting hole is provided on the end surface of the first sealing pressing plate and the second sealing pressing plate away from the fixed seat plate, and the installation limiting hole is a stepped hole; A limit block is arranged on the outer ring of the axial part of the compensation sealing cavity, and the limit block comprises a radial connection part and an axial limit part, and the axial limit part is arranged in the installation limit hole.

15. The shaft seal compensation device according to claim 13, characterized in that: A center hole is coaxially arranged on the fixed seat plate, and the center hole is used for installing the spherical seal compensation component and for installing and positioning the installation limit holes of the first sealing pressure plate and the second sealing pressure plate.

16. The shaft seal compensation device according to claim 1, characterized in that: The rotating shaft assembly comprises a rotating shaft and a shaft sleeve arranged on the rotating shaft; The rotating shaft is a stepped shaft, and a fourth sealing member is arranged between the bushing and the corresponding rotating shaft.

17. An extractor, characterized in that: Comprising the shaft seal compensation device as described in any one of claims 1-16.

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