CN214743314U - Sealing assembly for urea melting pump bearing box - Google Patents
Sealing assembly for urea melting pump bearing box Download PDFInfo
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- CN214743314U CN214743314U CN202121120682.1U CN202121120682U CN214743314U CN 214743314 U CN214743314 U CN 214743314U CN 202121120682 U CN202121120682 U CN 202121120682U CN 214743314 U CN214743314 U CN 214743314U
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Abstract
The application provides a seal assembly for a urea melt pump bearing housing, comprising: the oil blanket, the oil blanket is the annular structure, the periphery of oil blanket annular structure and the bearing gland interference fit of bearing box, the interior week of oil blanket annular structure is equipped with sealed tooth, sealed tooth and the main shaft clearance fit of bearing box, the oil blanket is close to the machine that the machine sealed the heating steam of bearing box and is equipped with the recess of annular structure, set the flange that sets annular structure in the recess, the flange is kept away from the one end and the manger plate circle of recess are kept away from the one end fixed connection of the machine sealed heating steam of bearing box, the manger plate circle is the annular structure to main shaft fixed connection through a plurality of fasteners and bearing box. An object of this application is to provide a seal assembly for urea melting pump bearing box for the realization effectively reduces the phenomenon that machine seals heating steam gets into the bearing box and takes place in service, further ensures the lubricated effect of bearing, effectively promotes the life of bearing.
Description
Technical Field
The application relates to the technical field of bearing connection, in particular to a sealing assembly for a urea melting pump bearing box.
Background
The molten urea pump is a single-stage cantilever centrifugal pump, and at present, a shaft seal device of the molten urea pump adopts mechanical seal and is provided with heating steam to prevent urine from crystallizing. The existing oil seal is generally formed by two sealing O-shaped rings and an inner hub and an outer hub, the outer hub is fixed during working, the inner hub rotates along with a shaft, and the inner hub and the outer hub are sealed by forming a layer of oil film through rotation, so that heating steam of the mechanical seal during running can easily enter a bearing box from the inner hub and the outer hub to form oil-water mixing, the lubricating effect of a bearing is seriously influenced, the service life of the bearing is reduced, and the severe accident of shaft burning can be caused during serious conditions.
SUMMERY OF THE UTILITY MODEL
The application provides a seal assembly for urea melting pump bearing box, has realized effectively reducing the phenomenon that machine sealed heating steam got into the bearing box in service and has taken place, has ensured the lubricated effect of bearing, further effectively promotes the life of bearing to solve the problem in the technical background.
The present application provides a seal assembly for a urea melt pump bearing housing, comprising: oil sealing;
the oil seal is of an annular structure, the periphery of the annular structure of the oil seal is in interference fit with a bearing gland of the bearing box, the inner periphery of the annular structure of the oil seal is provided with sealing teeth, and the sealing teeth are in clearance fit with a main shaft of the bearing box;
one end of the oil seal, which is close to the machine seal heating steam of the bearing box, is provided with a groove with an annular structure, a flange with an annular structure is arranged in the groove, and one end, which is far away from the groove, of the flange is fixedly connected with one end, which is far away from the machine seal heating steam of the bearing box, of the water retaining ring;
the water retaining ring is of an annular structure and is fixedly connected with the main shaft of the bearing box through a plurality of fasteners.
Optionally, the number of the fasteners is at least three, and the fasteners are evenly distributed along the circumferential direction of the main shaft.
Optionally, the fastener comprises: a threaded hole and a jackscrew;
the threaded hole penetrates through the water retaining ring and is vertical to the main shaft of the bearing box;
the jackscrew is in threaded connection with the threaded hole, and one end of the jackscrew, which is close to the inner ring of the annular structure of the water retaining ring, is used for jacking the main shaft.
Optionally, the inner periphery of the annular structure of the water retaining ring is further provided with a first mounting groove of the annular structure, a first sealing ring of an O-shaped structure is clamped in the first mounting groove, and the first sealing ring is used for sealing and connecting the water retaining ring and the main shaft.
Optionally, the periphery of the oil seal annular structure is also provided with a second mounting groove of the annular structure, a second sealing ring of an O-shaped structure is clamped in the second mounting groove, and the second sealing ring is used for sealing connection of the oil seal and the bearing gland.
Optionally, the seal teeth are of a flat tooth type, and the seal manner between the seal teeth and the main shaft is a flat tooth type comb seal.
Optionally, a first gap is formed between the seal tooth and the spindle, and the first gap is 0.1 mm.
Optionally, a second gap is provided between the outer convex surface of the flange and the inner concave surface of the groove.
Optionally, still be equipped with centring means on the water retaining ring, centring means includes: a plurality of clips;
the clip member includes: the connecting rod, connecting rod one end is equipped with the handle, the one end that the connecting rod kept away from the handle runs through the manger plate circle and is equipped with the butt pad, the butt pad is used for the butt the circumference outer wall of main shaft, the connecting rod with the main shaft is mutually perpendicular, still the cover is equipped with the spring on the connecting rod, spring one end with manger plate circle fixed connection, the spring other end with handle fixed connection.
Optionally, the number of the clamping pieces is at least three, and the clamping pieces are uniformly distributed along the circumferential direction of the main shaft.
The beneficial effect of this application is as follows:
the application provides a seal assembly for urea melting pump bearing box, at the main shaft operation in-process, the oil blanket keep quiescent condition and with the main shaft is relative motion state, the manger plate circle is relative quiescent condition with the main shaft and keeps synchronous revolution. The method specifically comprises the following steps: the oil seal and the water retaining ring are of annular structures and are sleeved on a main shaft of the bearing box, and the water retaining ring is located between the oil seal and the machine seal heating steam. Furthermore, the outer ring of the oil seal and the bearing gland of the bearing box are in interference fit and fixed connection, so that oil leakage or water inflow between the oil seal and the bearing gland can be effectively prevented. And the sealing teeth of the inner ring of the oil seal are in clearance fit with the main shaft, so that the oil seal and the main shaft do not have friction in the relative movement process, the working efficiency of the main shaft operation is effectively guaranteed, and meanwhile, a layer of oil film can be formed between the sealing teeth and the main shaft by rotation for sealing. Furthermore, the water retaining ring is fixedly connected to the main shaft of the bearing box through a plurality of fasteners and rotates along with the shaft, and is positioned between the oil seal and the machine seal heating steam, so that the machine seal heating steam can be effectively prevented from entering the bearing box. Furthermore, the flange of the water retaining ring is arranged in the groove of the oil seal, so that external water vapor can be effectively prevented from entering the bearing box from the space between the water retaining ring and the oil seal.
The application provides a seal assembly for urea melting pump bearing box has realized effectively reducing the phenomenon that machine sealed heating steam got into the bearing box in operation and has taken place, has ensured the lubricated effect of bearing, further effectively promotes the life of bearing.
Compare with traditional mechanical seal, traditional mechanical seal relies on the rotation to form the one deck oil film through inside and outside hub and seals, the phenomenon that oil leak or steam invade appears very easily between the outer hub, including O type circle is easy ageing to lose sealing action gradually, make heating steam will be along between the inside and outside hub and main shaft surface entering bearing box, form the water oil mixture, seriously influence the lubricated effect of bearing, reduce bearing life, still can lead to bad accidents such as axle burning even.
The application provides a seal assembly for urea melting pump bearing box, adopt the setting of oil blanket and manger plate circle, and the cooperation setting of flange and recess, effectively reduced the emergence of bearing box water intaking and oil leak phenomenon, effectively reduce the malignant equipment accident because of the lubricated harmfully results in of bearing, and, the life cycle of bearing has been ensured to good lubricated environment, by half a year overhaul before prolonged to one year overhaul, the overhaul period has been reduced, the maintenance cost has been practiced thrift, the long-term steady operation of equipment has been guaranteed.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by the practice of the application. The objectives and other advantages of the application may be realized and attained by the structure particularly pointed out in the written description and drawings.
The technical solution of the present application is further described in detail by the accompanying drawings and examples.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic structural diagram of a seal assembly for a bearing housing of a urea melt pump according to an embodiment of the present application;
FIG. 2 is a schematic view of a first clearance structure of a seal assembly for a bearing housing of a urea melt pump according to an embodiment of the present application;
FIG. 3 is a schematic structural view of a seal assembly centering device for a urea melt pump bearing housing according to an embodiment of the present application;
FIG. 4 is a schematic structural diagram of a sealing assembly clamp for a urea melt pump bearing housing according to an embodiment of the present application.
The sealing device comprises an oil seal, a water retaining ring, a sealing tooth, a bearing gland, a main shaft, a bearing groove, a bearing gland, a bearing groove, a bearing cover, a bearing gland, a bearing seal and a sealing ring, wherein the sealing device comprises 1-an oil seal, 2-a water retaining ring, 3-a sealing tooth, 4-a second mounting groove, 5-a second sealing ring, 6-a groove, 7-a flange, 8-a jackscrew, 9-a threaded hole, 10-a bearing box, 11-a bearing gland, 12-a main shaft, 13-a machine seal heating steam, 14-a first gap, 15-a second gap, 16-a clamping piece, 17-a handle, 18-a spring, 19-a connecting rod, 20-an abutting pad, 21-a first mounting groove and 22-a first sealing ring.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application are clearly and completely described below, and it is obvious that the described embodiments are a part of the embodiments of the present application, but not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
According to fig. 1-4, embodiments of the present application provide a seal assembly for a urea melt pump bearing housing, comprising: an oil seal 1;
the oil seal 1 is of an annular structure, the periphery of the annular structure of the oil seal 1 is in interference fit with a bearing gland 11 of the bearing box 10, sealing teeth 3 are arranged on the inner periphery of the annular structure of the oil seal 1, and the sealing teeth 3 are in clearance fit with a main shaft 12 of the bearing box 10. One end, close to the machine seal heating steam 13 of the bearing box 10, of the oil seal 1 is provided with a groove 6 with an annular structure, a flange 7 with an annular structure is arranged in the groove 6, and one end, far away from the groove 6, of the flange 7 is fixedly connected with one end, far away from the machine seal heating steam 13 of the bearing box 10, of the water retaining ring 2. The water retaining ring 2 is of an annular structure and is fixedly connected with a main shaft 12 of the bearing box 10 through a plurality of fasteners.
The working principle of the technical scheme is as follows:
according to the sealing assembly for the urea melting pump bearing box, in the operation process of the main shaft 12, the oil seal 1 keeps a static state and is in a relative motion state with the main shaft 12, and the water retaining ring 2 and the main shaft 12 keep synchronous rotation in the relative static state. The method specifically comprises the following steps: the oil seal 1 and the water retaining ring 2 are of annular structures and are sleeved on a main shaft 12 of the bearing box 10, and the water retaining ring 2 is located between the oil seal 1 and the machine seal heating steam 13. Furthermore, the outer ring of the oil seal 1 and the bearing gland 11 of the bearing box 10 are in interference fit and fixed connection, so that the oil seal 1 can be effectively prevented from loosening in operation, and meanwhile, oil leakage or water inflow between the oil seal 1 and the bearing gland 11 can be effectively prevented. And, the seal teeth 3 of the inner ring of the oil seal 1 and the main shaft 12 are arranged in clearance fit, so that the oil seal 1 and the main shaft 12 do not generate friction in the relative movement process, the working efficiency of the main shaft 12 is effectively guaranteed, and meanwhile, a layer of oil film can be formed between the seal teeth 3 and the main shaft 12 by rotation for sealing. Furthermore, the water retaining ring 2 is fixedly connected to a main shaft 12 of the bearing box 10 through a plurality of fasteners to rotate along with the shaft and is positioned between the oil seal 1 and the machine seal heating steam 13, so that the machine seal heating steam 13 can be effectively prevented from entering the bearing box 10. Further, by installing the flange 7 of the water retaining ring 2 in the groove 6 of the oil seal 1, external water vapor can be effectively prevented from entering the bearing box 10 from the space between the water retaining ring 2 and the oil seal 1.
The beneficial effects of the above technical scheme are:
the application provides a seal assembly for urea melting pump bearing box has realized effectively reducing the phenomenon that machine seals heating steam 13 entering bearing box 10 and has taken place in service, has ensured the lubricated effect of bearing, further effectively promotes the life of bearing.
Compare with traditional oil blanket, traditional oil blanket relies on the rotation to form the one deck oil film through inside and outside the hub and seals, the phenomenon that oil leak or steam invade appears very easily between the outer hub, including O type circle easily ages and lose sealing action gradually, make heating steam will be along between the inside and outside hub and main shaft 12 axle surfaces gets into bearing box 10, form the water oil mixture, seriously influence the lubricated effect of bearing, reduce bearing life, still can lead to bad accidents such as axle burning even.
The sealing assembly for the bearing box of the urea melting pump adopts the relative rest of the oil seal 1 and the main shaft 12, the water retaining ring 2 is separated between the oil seal 1 and the machine seal heating steam 13 and rotates along with the main shaft 12, and the sealing matching of the flange 7 and the groove 6, the water inlet and oil leakage phenomena of the bearing box 10 are effectively reduced, the serious equipment accidents caused by poor bearing lubrication are effectively reduced, in addition, the service cycle of the bearing is ensured by the good lubricating environment, the service cycle is prolonged to one-year overhaul by the former half-year overhaul, the overhaul period is reduced, the overhaul cost is saved, and the long-term stable operation of the equipment is ensured.
In one embodiment of the present application, as shown in fig. 1-4, the number of fasteners is at least three and is evenly distributed along the circumference of the main shaft 12. The fastener includes: a threaded hole 9 and a jackscrew 8. The threaded hole 9 is arranged on the water retaining ring 2 in a penetrating mode and is perpendicular to a main shaft 12 of the bearing box 10. The jackscrew 8 is in threaded connection with the threaded hole 9, and one end, close to the inner ring of the annular structure of the water retaining ring 2, of the jackscrew 8 is used for jacking the main shaft 12.
The inner periphery of the annular structure of the water retaining ring 2 is also provided with a first mounting groove 21 of the annular structure, a first sealing ring 22 of an O-shaped structure is clamped in the first mounting groove 21, and the first sealing ring 22 is used for sealing and connecting the water retaining ring 2 and the main shaft 12.
The working principle and the beneficial effects of the technical scheme are as follows:
the application provides a seal assembly for urea melting pump bearing box, because the sealed tooth 3 and the main shaft 12 of oil blanket 1 are clearance fit, get into bearing box 10 from the clearance department between sealed tooth 3 and the main shaft 12 when leaking outward for reducing the machine seals heating steam, consequently, designed manger plate circle 2 in 1 outer lane of oil blanket. The water retaining ring 2 is fixed on the shaft by three jackscrews 8 and rotates along with the shaft. The water retaining ring 2 adopts double protection to block steam from entering the bearing box 10: the first heavy protection is that the inner ring of the water retaining ring 2 is provided with a first sealing ring 22 with an O-shaped structure, so that steam can not enter the bearing box 10 along the main shaft 12. The second protection is that the flange 7 is designed on one side of the water retaining ring 2 close to the oil seal 1, the groove 6 is designed on one side of the oil seal 1 close to the water retaining ring 2, then the flange 7 of the water retaining ring 2 is partially installed in the groove 6 of the oil seal 1, a certain gap is reserved on the end face, the water retaining ring 2 is guaranteed not to rub against the oil seal 1 in the running process, and therefore water vapor can be effectively prevented from entering the bearing box 10 between the oil seal 1 and the water retaining ring 2.
According to fig. 1-4, in one embodiment of the present application, the outer circumference of the annular structure of the oil seal 1 is further provided with a second mounting groove 4 of the annular structure, a second sealing ring 5 of an O-ring structure is clamped in the second mounting groove 4, and the second sealing ring 5 is used for sealing and connecting the oil seal 1 and the bearing gland 11.
The working principle and the beneficial effects of the technical scheme are as follows:
the application provides a seal assembly for urea melting pump bearing box, second sealing washer 5 is installed in second mounting groove 4, be used for further do oil blanket 1 with provide sealed guarantee between the bearing cover 11, effectively reduce oil blanket 1 with the phenomenon that oil leak or steam invasion appear between the bearing cover 11 takes place.
According to fig. 1-4, in one embodiment of the present application, the seal teeth 3 are of a flat tooth type, and the seal between the seal teeth 3 and the main shaft 12 is a flat tooth type comb seal. A first gap 14 is formed between the seal teeth 3 and the main shaft 12, and the first gap 14 is 0.1 mm.
The working principle and the beneficial effects of the technical scheme are as follows:
the application provides a seal assembly for urea melt pump bearing box, sealed tooth 3 with the sealed mode of the flat tooth type broach of adoption between the main shaft 12, effectively reduce oil blanket 1 inner circle with the phenomenon that oil leak or steam invasion appears between the main shaft 12 takes place. And a 0.1 millimeter gap is reserved between the sealing teeth 3 and the main shaft 12, so that the main shaft 12 and the oil seal 1 do not have friction in the rotating process, the operating efficiency of the device is guaranteed, and the service life of the device is obviously prolonged.
In one embodiment of the present application, as shown in fig. 1-4, the convex outer surface of the flange 7 is spaced from the concave inner surface of the groove 6 by a second gap 15.
The working principle and the beneficial effects of the technical scheme are as follows:
the application provides a seal assembly for urea melting pump bearing box, with manger plate circle 2 the oil blanket 1 is installed to flange 7 recess 6 the inside to leave certain clearance at the terminal surface, be used for effectively reducing the phenomenon that the friction appears between operation in-process manger plate circle 2 and oil blanket 1, further effectively ensured the operating efficiency of device, and show hoisting device's life.
According to fig. 1-4, in one embodiment of the present application, a centering device is further disposed on the water deflector 2, and the centering device includes: a plurality of clips 16;
the clip 16 includes: a connecting rod 19, a handle 17 is arranged at one end of the connecting rod 19, which is far away from the handle 17, penetrates through the water retaining ring 2 and is provided with a butting pad 20, the butting pad 20 is used for butting against the circumferential outer wall of the main shaft 12, the connecting rod 19 is perpendicular to the main shaft 12, a spring 18 is further sleeved on the connecting rod 19, one end of the spring 18 is fixedly connected with the water retaining ring 2, and the other end of the spring 18 is fixedly connected with the handle 17. The number of the clamping pieces 16 is at least three, and the clamping pieces are evenly distributed along the circumferential direction of the main shaft 12.
The working principle of the technical scheme is as follows:
the application provides a seal assembly for urea melting pump bearing box, because flange 7 is installed do relative operation in the recess 6, flange 7 with leave second clearance 15 between the recess 6, if manger plate circle 2 with the unevenness is installed in the cooperation of oil blanket 1, will appear flange 7 with the phenomenon of recess 6 contact to frictional phenomenon will appear between manger plate circle 2 and oil blanket 1 in the operation process, and then still can influence the operating efficiency of device, still can wear device reduce device's life. Therefore, the centering device can be used for installing the water retaining ring 2 at one end of the oil seal 1 close to the machine seal heating steam 13 in parallel, so as to ensure that a second gap 15 is reserved between the flange 7 of the water retaining ring 2 and the groove 6 of the oil seal 1, further ensure that the phenomenon of friction between the water retaining ring 2 and the oil seal 1 cannot occur in the operation process, ensure the operation efficiency of the device and prolong the service life of the device. The method specifically comprises the following steps:
when the water retaining ring 2 needs to be fixedly installed on the main shaft 12, the handles 17 are pulled in a direction away from the main shaft 12, the handles 17 drive the connecting rods 19 and the abutting pads 20 to move in a direction away from the main shaft 12, meanwhile, the springs 18 extend, the water retaining ring 2 can be sleeved on the main shaft 12, when the water retaining ring 2 is sleeved and moves to a position to be installed, the handles 17 are loosened, the springs 18 contract and reset, and meanwhile, the handles 17 drive the connecting rods 19 and the abutting pads 20 to move in a direction close to the main shaft 12 until the abutting pads 20 of the clamping pieces 16 abut against the circumferential outer wall of the main shaft 12. Because the number of the clamping pieces 16 is at least three, and the clamping pieces 16 are uniformly distributed along the circumferential direction of the main shaft 12 at intervals, under the action of the clamping pieces 16, the main shaft 12 is positioned at the center of the water retaining ring 2, the water retaining ring 2 is perpendicular to the main shaft 12 at the moment, the water retaining ring 2 is parallel to the oil seal 1, and then the water retaining ring 2 is fixedly connected to the main shaft 12 through a fastening piece, namely the water retaining ring 2 is completely installed on the main shaft 12. At the moment, the flange 7 of the water retaining ring 2 has uniform second gaps 15 at intervals between the grooves 6 of the oil seal 1, and uniform gaps are kept between the flange 7 and the grooves 6 in the operation process, so that the phenomenon of friction between the water retaining ring 2 and the oil seal 1 in the operation process is effectively reduced, the operation efficiency of the device is further effectively ensured, and the service life of the device is obviously prolonged.
When the water retaining ring 2 needs to be detached from the main shaft 12, each handle 17 is pulled in a direction away from the main shaft 12, the handle 17 drives the connecting rod 19 and the abutting pad 20 to move in a direction away from the main shaft 12, and meanwhile, the spring 18 extends, so that the water retaining ring 2 can be detached from the main shaft 12.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it will be understood by those skilled in the art; the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.
Claims (10)
1. A seal assembly for a urea melt pump bearing housing, comprising: an oil seal (1);
the oil seal (1) is of an annular structure, the periphery of the annular structure of the oil seal (1) is in interference fit with a bearing gland (11) of the bearing box (10), the inner periphery of the annular structure of the oil seal (1) is provided with sealing teeth (3), and the sealing teeth (3) are in clearance fit with a main shaft (12) of the bearing box (10);
one end, close to a machine seal heating steam (13) of the bearing box (10), of the oil seal (1) is provided with a groove (6) with an annular structure, a flange (7) with an annular structure is arranged in the groove (6), and one end, far away from the groove (6), of the flange (7) is fixedly connected with one end, far away from the machine seal heating steam (13) of the bearing box (10), of the water retaining ring (2);
the water retaining ring (2) is of an annular structure and is fixedly connected with a main shaft (12) of the bearing box (10) through a plurality of fasteners.
2. A seal assembly for a urea melt pump bearing housing according to claim 1, characterized in that said fasteners are at least three and evenly distributed along the circumference of said main shaft (12).
3. The seal assembly for a urea melt pump bearing housing of claim 1, wherein said fastener comprises: a threaded hole (9) and a jackscrew (8);
the threaded hole (9) is arranged on the water retaining ring (2) in a penetrating mode and is perpendicular to a main shaft (12) of the bearing box (10);
the jackscrew (8) is in threaded connection with the threaded hole (9), and one end, close to the inner ring of the annular structure of the water retaining ring (2), of the jackscrew (8) is used for jacking the main shaft (12).
4. The seal assembly for the urea melting pump bearing box as recited in claim 1, characterized in that the inner periphery of the annular structure of the water retaining ring (2) is further provided with a first mounting groove (21) of the annular structure, a first sealing ring (22) of an O-shaped structure is clamped in the first mounting groove (21), and the first sealing ring (22) is used for sealing and connecting the water retaining ring (2) and the main shaft (12).
5. The seal assembly for the bearing box of the urea melting pump as recited in claim 1, characterized in that the outer periphery of the annular structure of the oil seal (1) is further provided with a second mounting groove (4) of the annular structure, a second sealing ring (5) of an O-shaped structure is clamped in the second mounting groove (4), and the second sealing ring (5) is used for sealing and connecting the oil seal (1) and the bearing gland (11).
6. A seal assembly for a urea melt pump bearing housing according to claim 1, characterized in that the sealing teeth (3) are of the flat tooth type, and the sealing between the sealing teeth (3) and the main shaft (12) is a flat tooth type comb seal.
7. A seal assembly for a urea melt pump bearing housing according to claim 1, characterized in that the seal teeth (3) are spaced from the main shaft (12) by a first gap (14), the first gap (14) being 0.1 mm.
8. A seal assembly for a urea melt pump bearing housing according to claim 1, characterized in that the convex outer surface of the flange (7) is spaced from the concave inner surface of the groove (6) by a second gap (15).
9. A seal assembly for a urea melt pump bearing housing according to any of the claims 1-8, characterized in that said water deflector ring (2) is further provided with centering means comprising: a plurality of clips (16);
the clip (16) includes: connecting rod (19), connecting rod (19) one end is equipped with handle (17), keeping away from connecting rod (19) the one end of handle (17) is run through manger plate circle (2) and be equipped with and support pad (20), support pad (20) are used for the butt the circumference outer wall of main shaft (12), connecting rod (19) with main shaft (12) are mutually perpendicular, still the cover is equipped with spring (18) on connecting rod (19), spring (18) one end with manger plate circle (2) fixed connection, the spring (18) other end with handle (17) fixed connection.
10. A seal assembly for a urea melt pump bearing housing according to claim 9, characterized in that said snap-in elements (16) are at least three and are evenly distributed along the circumference of said main shaft (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121120682.1U CN214743314U (en) | 2021-05-24 | 2021-05-24 | Sealing assembly for urea melting pump bearing box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121120682.1U CN214743314U (en) | 2021-05-24 | 2021-05-24 | Sealing assembly for urea melting pump bearing box |
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| Publication Number | Publication Date |
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| CN214743314U true CN214743314U (en) | 2021-11-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121120682.1U Active CN214743314U (en) | 2021-05-24 | 2021-05-24 | Sealing assembly for urea melting pump bearing box |
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| Country | Link |
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| CN (1) | CN214743314U (en) |
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2021
- 2021-05-24 CN CN202121120682.1U patent/CN214743314U/en active Active
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